Actualización

plugin/buycourses/src/buycourses.ajax.php

@@ -0,0 +1,612 @@
+<?php
+/* For licensing terms, see /license.txt */
+
+use Chamilo\CoreBundle\Entity\Course;
+use Chamilo\CoreBundle\Entity\Session;
+use Chamilo\CourseBundle\Entity\CLp;
+use Chamilo\UserBundle\Entity\User;
+
+/**
+ * Responses to AJAX calls.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+if (api_is_anonymous()) {
+    api_not_allowed(true);
+}
+
+$plugin = BuyCoursesPlugin::create();
+$culqiEnable = $plugin->get('culqi_enable');
+$action = isset($_GET['a']) ? $_GET['a'] : null;
+
+$em = Database::getManager();
+
+switch ($action) {
+    case 'verifyPaypal':
+        if (api_is_anonymous()) {
+            break;
+        }
+
+        $userId = isset($_POST['id']) ? (int) $_POST['id'] : '';
+        $isUserHavePaypalAccount = $plugin->verifyPaypalAccountByBeneficiary($userId);
+        if ($isUserHavePaypalAccount) {
+            echo '';
+        } else {
+            echo '<b style="color: red; font-size: 70%;">* '.$plugin->get_lang('NoPayPalAccountDetected').'</b>';
+        }
+        break;
+    case 'saleInfo':
+        if (api_is_anonymous()) {
+            break;
+        }
+
+        $saleId = isset($_POST['id']) ? (int) $_POST['id'] : '';
+        $sale = $plugin->getSale($saleId);
+        $productType = $sale['product_type'] == 1 ? get_lang('Course') : get_lang('Session');
+        $paymentType = $sale['payment_type'] == 1 ? 'Paypal' : $plugin->get_lang('BankTransfer');
+        $productInfo = $sale['product_type'] == 1
+            ? api_get_course_info_by_id($sale['product_id'])
+            : api_get_session_info($sale['product_id']);
+        $currency = $plugin->getSelectedCurrency();
+        if ($sale['product_type'] == 1) {
+            $productImage = $productInfo['course_image_large'];
+        } else {
+            $productImage = ($productInfo['image'])
+                ? $productInfo['image']
+                : Template::get_icon_path('session_default.png');
+        }
+
+        $userInfo = api_get_user_info($sale['user_id']);
+
+        $html = '<h2>'.$sale['product_name'].'</h2>';
+        $html .= '<div class="row">';
+        $html .= '<div class="col-sm-6 col-md-6">';
+        $html .= '<ul>';
+        $html .= '<li><b>'.$plugin->get_lang('OrderPrice').':</b> '.$sale['total_price'].'</li>';
+        $html .= '<li><b>'.$plugin->get_lang('CurrencyType').':</b> '.$currency['iso_code'].'</li>';
+        $html .= '<li><b>'.$plugin->get_lang('ProductType').':</b> '.$productType.'</li>';
+        $html .= '<li><b>'.$plugin->get_lang('OrderDate').':</b> '.
+            api_format_date(
+                $sale['date'],
+                DATE_TIME_FORMAT_LONG_24H
+            ).'</li>';
+        $html .= '<li><b>'.$plugin->get_lang('Buyer').':</b> '.$userInfo['complete_name'].'</li>';
+        $html .= '<li><b>'.$plugin->get_lang('PaymentMethods').':</b> '.$paymentType.'</li>';
+        $html .= '</ul>';
+        $html .= '</div>';
+        $html .= '<div class="col-sm-6 col-md-6">';
+        $html .= '<img class="thumbnail" src="'.$productImage.'" >';
+        $html .= '</div>';
+        $html .= '</div>';
+
+        echo $html;
+        break;
+    case 'stats':
+        if (api_is_anonymous()) {
+            break;
+        }
+
+        $stats = [];
+        $stats['completed_count'] = 0;
+        $stats['completed_total_amount'] = 0;
+        $stats['pending_count'] = 0;
+        $stats['pending_total_amount'] = 0;
+        $stats['canceled_count'] = 0;
+        $stats['canceled_total_amount'] = 0;
+
+        $completedPayouts = $plugin->getPayouts(BuyCoursesPlugin::PAYOUT_STATUS_COMPLETED);
+        $pendingPayouts = $plugin->getPayouts(BuyCoursesPlugin::PAYOUT_STATUS_PENDING);
+        $canceledPayouts = $plugin->getPayouts(BuyCoursesPlugin::PAYOUT_STATUS_CANCELED);
+        $currency = $plugin->getSelectedCurrency();
+
+        foreach ($completedPayouts as $completed) {
+            $stats['completed_count'] = count($completedPayouts);
+            $stats['completed_total_amount'] += $completed['commission'];
+            $stats['completed_total_amount'] = number_format($stats['completed_total_amount'], 2);
+        }
+
+        foreach ($pendingPayouts as $pending) {
+            $stats['pending_count'] = count($pendingPayouts);
+            $stats['pending_total_amount'] += $pending['commission'];
+            $stats['pending_total_amount'] = number_format($stats['pending_total_amount'], 2);
+        }
+
+        foreach ($canceledPayouts as $canceled) {
+            $stats['canceled_count'] = count($canceledPayouts);
+            $stats['canceled_total_amount'] += $canceled['commission'];
+            $stats['canceled_total_amount'] = number_format($stats['canceled_total_amount'], 2);
+        }
+
+        $html = '<div class="row">'
+            .'<p>'
+            .'<ul>'
+            .'<li>'.get_plugin_lang("PayoutsTotalCompleted", "BuyCoursesPlugin").' <b>'.$stats['completed_count']
+            .'</b> - '.get_plugin_lang("TotalAmount", "BuyCoursesPlugin").' <b>'.$stats['completed_total_amount'].' '
+            .$currency['iso_code'].'</b></li>'
+            .'<li>'.get_plugin_lang("PayoutsTotalPending", "BuyCoursesPlugin").' <b>'.$stats['pending_count'].'</b> - '
+            .get_plugin_lang("TotalAmount", "BuyCoursesPlugin").' <b>'.$stats['pending_total_amount'].' '
+            .$currency['iso_code'].'</b></li>'
+            .'<li>'.get_plugin_lang("PayoutsTotalCanceled", "BuyCoursesPlugin").' <b>'.$stats['canceled_count']
+            .'</b> - '.get_plugin_lang("TotalAmount", "BuyCoursesPlugin").' <b>'.$stats['canceled_total_amount'].' '
+            .$currency['iso_code'].'</b></li>'
+            .'</ul>'
+            .'</p>';
+        $html .= '</div>';
+        echo $html;
+        break;
+    case 'processPayout':
+        if (api_is_anonymous()) {
+            break;
+        }
+
+        $html = '';
+        $allPays = [];
+        $totalAccounts = 0;
+        $totalPayout = 0;
+
+        $payouts = isset($_POST['payouts']) ? $_POST['payouts'] : '';
+
+        if (!$payouts) {
+            echo Display::return_message(
+                get_plugin_lang("SelectOptionToProceed", "BuyCoursesPlugin"),
+                'error',
+                false
+            );
+            break;
+        }
+
+        foreach ($payouts as $index => $id) {
+            $allPays[] = $plugin->getPayouts(BuyCoursesPlugin::PAYOUT_STATUS_PENDING, $id);
+        }
+
+        foreach ($allPays as $payout) {
+            $totalPayout += number_format($payout['commission'], 2);
+            $totalAccounts++;
+        }
+
+        $currentCurrency = $plugin->getSelectedCurrency();
+        $isoCode = $currentCurrency['iso_code'];
+        $html .= '<p>'.get_plugin_lang("VerifyTotalAmountToProceedPayout", "BuyCoursesPlugin").'</p>';
+        $html .= ''
+            .'<p>'
+            .'<ul>'
+            .'<li>'.get_plugin_lang("TotalAcounts", "BuyCoursesPlugin").' <b>'.$totalAccounts.'</b></li>'
+            .'<li>'.get_plugin_lang("TotalPayout", "BuyCoursesPlugin").' <b>'.$isoCode.' '.$totalPayout.'</b></li>'
+            .'</ul>'
+            .'</p>';
+        $html .= '<p>'.get_plugin_lang("CautionThisProcessCantBeCanceled", "BuyCoursesPlugin").'</p>';
+        $html .= '<br /><br />';
+        $html .= '<div id="spinner" class="text-center"></div>';
+
+        echo $html;
+        break;
+    case 'proceedPayout':
+        if (api_is_anonymous()) {
+            break;
+        }
+
+        $paypalParams = $plugin->getPaypalParams();
+
+        $pruebas = $paypalParams['sandbox'] == 1;
+        $paypalUsername = $paypalParams['username'];
+        $paypalPassword = $paypalParams['password'];
+        $paypalSignature = $paypalParams['signature'];
+
+        require_once "paypalfunctions.php";
+
+        $allPayouts = [];
+        $totalAccounts = 0;
+        $totalPayout = 0;
+
+        $payouts = isset($_POST['payouts']) ? $_POST['payouts'] : '';
+
+        if (!$payouts) {
+            echo Display::return_message(
+                get_plugin_lang("SelectOptionToProceed", "BuyCoursesPlugin"),
+                'error',
+                false
+            );
+            break;
+        }
+
+        foreach ($payouts as $index => $id) {
+            $allPayouts[] = $plugin->getPayouts(
+                BuyCoursesPlugin::PAYOUT_STATUS_PENDING,
+                $id
+            );
+        }
+
+        $currentCurrency = $plugin->getSelectedCurrency();
+        $isoCode = $currentCurrency['iso_code'];
+        $result = MassPayment($allPayouts, $isoCode);
+        if ($result['ACK'] === 'Success') {
+            foreach ($allPayouts as $payout) {
+                $plugin->setStatusPayouts(
+                    $payout['id'],
+                    BuyCoursesPlugin::PAYOUT_STATUS_COMPLETED
+                );
+                if ($plugin->get('invoicing_enable') === 'true') {
+                    $plugin->setInvoice($payout['id']);
+                }
+            }
+
+            echo Display::return_message(
+                get_plugin_lang("PayoutSuccess", "BuyCoursesPlugin"),
+                'success',
+                false
+            );
+        } else {
+            echo Display::return_message(
+                '<b>'.$result['L_SEVERITYCODE0'].' '.$result['L_ERRORCODE0'].'</b> - '.$result['L_SHORTMESSAGE0']
+                .'<br /><ul><li>'.$result['L_LONGMESSAGE0'].'</li></ul>',
+                'error',
+                false
+            );
+        }
+        break;
+    case 'cancelPayout':
+        if (api_is_anonymous()) {
+            break;
+        }
+
+        // $payoutId only gets used in setStatusPayout(), where it is filtered
+        $payoutId = isset($_POST['id']) ? $_POST['id'] : '';
+        $plugin->setStatusPayouts(
+            $payoutId,
+            BuyCoursesPlugin::PAYOUT_STATUS_CANCELED
+        );
+
+        echo '';
+
+        break;
+    case 'culqi_cargo':
+        if (!$culqiEnable) {
+            break;
+        }
+
+        $tokenId = $_REQUEST['token_id'];
+        $saleId = $_REQUEST['sale_id'];
+
+        if (!$tokenId || !$saleId) {
+            break;
+        }
+        $sale = $plugin->getSale($saleId);
+        if (!$sale) {
+            break;
+        }
+
+        require_once 'Requests.php';
+        Requests::register_autoloader();
+        require_once 'culqi.php';
+
+        $culqiParams = $plugin->getCulqiParams();
+
+        // API Key y autenticación
+        $SECRET_API_KEY = $culqiParams['api_key'];
+        $culqi = new Culqi\Culqi(['api_key' => $SECRET_API_KEY]);
+
+        $environment = $culqiParams['integration'];
+        $environment = $environment
+            ? BuyCoursesPlugin::CULQI_INTEGRATION_TYPE
+            : BuyCoursesPlugin::CULQI_PRODUCTION_TYPE;
+
+        $culqi->setEnv($environment);
+
+        $user = api_get_user_info();
+        $currency = $plugin->getSelectedCurrency();
+
+        try {
+            $cargo = $culqi->Cargos->create([
+                "moneda" => $currency['iso_code'],
+                "monto" => intval(floatval($sale['price']) * 100),
+                "usuario" => $user['username'],
+                "descripcion" => $sale['product_name'],
+                "pedido" => $sale['reference'],
+                "codigo_pais" => "PE",
+                "direccion" => get_lang('None'),
+                "ciudad" => get_lang('None'),
+                "telefono" => 0,
+                "nombres" => $user['firstname'],
+                "apellidos" => $user['lastname'],
+                "correo_electronico" => $user['email'],
+                "token" => $tokenId,
+            ]);
+
+            if (is_object($cargo)) {
+                $saleIsCompleted = $plugin->completeSale($sale['id']);
+
+                if ($saleIsCompleted) {
+                    Display::addFlash(
+                        $plugin->getSubscriptionSuccessMessage($sale)
+                    );
+                }
+            }
+
+            echo json_encode($cargo);
+        } catch (Exception $e) {
+            $cargo = json_decode($e->getMessage(), true);
+            $plugin->cancelSale($sale['id']);
+            unset($_SESSION['bc_sale_id']);
+            if (is_array($cargo)) {
+                Display::addFlash(
+                    Display::return_message(
+                        sprintf($plugin->get_lang('ErrorOccurred'), $cargo['codigo'], $cargo['mensaje']),
+                        'error',
+                        false
+                    )
+                );
+            } else {
+                Display::addFlash(
+                    Display::return_message(
+                        $plugin->get_lang('ErrorContactPlatformAdmin'),
+                        'error',
+                        false
+                    )
+                );
+            }
+        }
+        break;
+    case 'culqi_cargo_service':
+        if (!$culqiEnable) {
+            break;
+        }
+
+        $tokenId = $_REQUEST['token_id'];
+        $serviceSaleId = $_REQUEST['service_sale_id'];
+
+        if (!$tokenId || !$serviceSaleId) {
+            break;
+        }
+
+        $serviceSale = $plugin->getServiceSale($serviceSaleId);
+
+        if (!$serviceSale) {
+            break;
+        }
+
+        require_once 'Requests.php';
+        Requests::register_autoloader();
+        require_once 'culqi.php';
+        $culqiParams = $plugin->getCulqiParams();
+
+        // API Key y autenticación
+        $SECRET_API_KEY = $culqiParams['api_key'];
+        $culqi = new Culqi\Culqi(['api_key' => $SECRET_API_KEY]);
+
+        $environment = $culqiParams['integration'];
+        $environment = $environment
+            ? BuyCoursesPlugin::CULQI_INTEGRATION_TYPE
+            : BuyCoursesPlugin::CULQI_PRODUCTION_TYPE;
+
+        $culqi->setEnv($environment);
+        $user = api_get_user_info();
+
+        try {
+            $cargo = $culqi->Cargos->create([
+                "moneda" => $serviceSale['currency'],
+                "monto" => intval(floatval($serviceSale['price']) * 100),
+                "usuario" => $user['username'],
+                "descripcion" => $serviceSale['service']['name'],
+                "pedido" => $serviceSale['reference'],
+                "codigo_pais" => "PE",
+                "direccion" => get_lang('None'),
+                "ciudad" => get_lang('None'),
+                "telefono" => 0,
+                "nombres" => $user['firstname'],
+                "apellidos" => $user['lastname'],
+                "correo_electronico" => $user['email'],
+                "token" => $tokenId,
+            ]);
+
+            if (is_object($cargo)) {
+                $saleIsCompleted = $plugin->completeServiceSale($serviceSale['id']);
+                if ($saleIsCompleted) {
+                    Display::addFlash(
+                        Display::return_message(
+                            sprintf(
+                                $plugin->get_lang('SubscriptionToCourseXSuccessful'),
+                                $serviceSale['service']['name']
+                            ),
+                            'success'
+                        )
+                    );
+                }
+            }
+
+            echo json_encode($cargo);
+        } catch (Exception $e) {
+            $cargo = json_decode($e->getMessage(), true);
+            $plugin->cancelServiceSale($serviceSale['id']);
+
+            unset($_SESSION['bc_sale_id']);
+
+            if (is_array($cargo)) {
+                Display::addFlash(
+                    Display::return_message(
+                        sprintf($plugin->get_lang('ErrorOccurred'), $cargo['codigo'], $cargo['mensaje']),
+                        'error',
+                        false
+                    )
+                );
+            } else {
+                Display::addFlash(
+                    Display::return_message(
+                        $plugin->get_lang('ErrorContactPlatformAdmin'),
+                        'error',
+                        false
+                    )
+                );
+            }
+        }
+        break;
+    case 'service_sale_info':
+        $id = isset($_POST['id']) ? (int) $_POST['id'] : 0;
+        $serviceSale = $plugin->getServiceSale($id);
+        $isAdmin = api_is_platform_admin();
+        if (!$serviceSale) {
+            break;
+        }
+
+        $ajaxCallFile = $plugin->getPath('SRC').'buycourses.ajax.php';
+        $serviceImg = $plugin->getPath('SERVICE_IMAGES').$serviceSale['service']['image'];
+        $html = "<img class='img-responsive text-center' src='$serviceImg'>";
+        $html .= "<br />";
+        $html .= "<legend>{$plugin->get_lang('ServiceInformation')}</legend>";
+        $html .= "<ul>";
+        $html .= "<li><b>{$plugin->get_lang('ServiceName')}:</b> {$serviceSale['service']['name']}</li> ";
+        $html .= "<li><b>{$plugin->get_lang('Description')}:</b> {$serviceSale['service']['description']}</li> ";
+        $nodeType = $serviceSale['node_type'];
+        $nodeName = '';
+        if ($nodeType == BuyCoursesPlugin::SERVICE_TYPE_USER) {
+            $nodeType = get_lang('User');
+            /** @var User $user */
+            $user = UserManager::getManager()->find($serviceSale['node_id']);
+            $nodeName = $user ? $user->getCompleteNameWithUsername() : null;
+        } else {
+            if ($nodeType == BuyCoursesPlugin::SERVICE_TYPE_COURSE) {
+                $nodeType = get_lang('Course');
+                /** @var Course $course */
+                $course = $em->find('ChamiloCoreBundle:Course', $serviceSale['node_id']);
+                $nodeName = $course ? $course->getTitle() : null;
+            } else {
+                if ($nodeType == BuyCoursesPlugin::SERVICE_TYPE_SESSION) {
+                    $nodeType = get_lang('Session');
+                    /** @var Session $session */
+                    $session = $em->find('ChamiloCoreBundle:Session', $serviceSale['node_id']);
+                    $nodeName = $session ? $session->getName() : null;
+                } else {
+                    if ($nodeType == BuyCoursesPlugin::SERVICE_TYPE_LP_FINAL_ITEM) {
+                        $nodeType = get_lang('TemplateTitleCertificate');
+                        /** @var CLp $lp */
+                        $lp = $em->find('ChamiloCourseBundle:CLp', $serviceSale['node_id']);
+                        $nodeName = $lp ? $lp->getName() : null;
+                    }
+                }
+            }
+        }
+
+        $html .= "</ul>";
+        $html .= "<legend>{$plugin->get_lang('SaleInfo')}</legend>";
+        $html .= "<ul>";
+        $html .= "<li><b>{$plugin->get_lang('BoughtBy')}:</b> {$serviceSale['buyer']['name']}</li> ";
+        $html .= "<li><b>{$plugin->get_lang('PurchaserUser')}:</b> {$serviceSale['buyer']['username']}</li> ";
+        $html .= "<li><b>{$plugin->get_lang('Total')}:</b> {$serviceSale['service']['total_price']}</li> ";
+        $orderDate = api_format_date($serviceSale['buy_date'], DATE_FORMAT_LONG);
+        $html .= "<li><b>{$plugin->get_lang('OrderDate')}:</b> $orderDate</li> ";
+        $paymentType = $serviceSale['payment_type'];
+        if ($paymentType == BuyCoursesPlugin::PAYMENT_TYPE_PAYPAL) {
+            $paymentType = 'PayPal';
+        } else {
+            if ($paymentType == BuyCoursesPlugin::PAYMENT_TYPE_TRANSFER) {
+                $paymentType = $plugin->get_lang('BankTransfer');
+            } else {
+                if ($paymentType == BuyCoursesPlugin::PAYMENT_TYPE_CULQI) {
+                    $paymentType = 'Culqi';
+                }
+            }
+        }
+        $html .= "<li><b>{$plugin->get_lang('PaymentMethod')}:</b> $paymentType</li> ";
+        $status = $serviceSale['status'];
+        $buttons = '';
+        if ($status == BuyCoursesPlugin::SERVICE_STATUS_COMPLETED) {
+            $status = $plugin->get_lang('Active');
+        } else {
+            if ($status == BuyCoursesPlugin::SERVICE_STATUS_PENDING) {
+                $status = $plugin->get_lang('Pending');
+                if ($isAdmin) {
+                    $buttons .= "<a id='{$serviceSale['id']}' tag='service_sale_confirm' class='btn btn-success pull-left'>{$plugin->get_lang('ConfirmOrder')}</a>";
+                    $buttons .= "<a id='{$serviceSale['id']}' tag='service_sale_cancel' class='btn btn-danger pull-right'>{$plugin->get_lang('CancelOrder')}</a>";
+                }
+            } else {
+                if ($status == BuyCoursesPlugin::SERVICE_STATUS_CANCELLED) {
+                    $status = $plugin->get_lang('Cancelled');
+                }
+            }
+        }
+        $html .= "<li><b>{$plugin->get_lang('Status')}:</b> $status</li> ";
+        $html .= "</ul>";
+        $html .= "<br />";
+        $html .= "<div class='row'>";
+        $html .= "<div class='col-md-2'></div>";
+        $html .= "<div class='col-md-8 text-center'>";
+        $html .= "<div class='bc-action-buttons'>";
+        $html .= $buttons;
+        $html .= "</div>";
+        $html .= "</div>";
+        $html .= "<div class='col-md-2'></div>";
+        $html .= "<script>";
+        $html .= "$('.bc-action-buttons a').click(function() {";
+        $html .= "var id = $(this).attr('id');";
+        $html .= "var action = $(this).attr('tag');";
+        $html .= "$.ajax({";
+        $html .= "data: 'id='+id,";
+        $html .= "url: '$ajaxCallFile?a='+action,";
+        $html .= "type: 'POST',";
+        $html .= "beforeSend: function() {";
+        $processingLoaderText = $plugin->get_lang('ProcessingDontCloseThisWindow');
+        $html .= "$('.bootbox-close-button').remove();";
+        $html .= "$('.btn-default').attr('disabled', true);";
+        $html .= "$('.bc-action-buttons').html('<div class=\"wobblebar-loader\"></div><p> $processingLoaderText</p>');";
+        $html .= "},";
+        $html .= "success: function(response) {";
+        $html .= "$('.bc-action-buttons').html(response);";
+        $html .= "},";
+        $html .= "});";
+        $html .= "});";
+        $html .= "</script>";
+
+        echo $html;
+        break;
+    case 'service_sale_confirm':
+        $id = isset($_POST['id']) ? (int) $_POST['id'] : 0;
+        $serviceSale = $plugin->getServiceSale($id);
+        $response = $plugin->completeServiceSale($id);
+        $html = "<div class='text-center'>";
+
+        if ($response) {
+            $html .= Display::return_message(
+                sprintf($plugin->get_lang('SubscriptionToServiceXSuccessful'), $serviceSale['service']['name']),
+                'success'
+            );
+        } else {
+            $html .= Display::return_message('Error - '.$plugin->get_lang('ErrorContactPlatformAdmin'), 'error');
+        }
+
+        $html .= "<a id='finish-button' class='btn btn-primary'>".$plugin->get_lang('ClickHereToFinish')."</a>";
+        $html .= "</div>";
+        $html .= "<script>";
+        $html .= "$('#finish-button').click(function() {";
+        $html .= "location.reload();";
+        $html .= "});";
+        $html .= "</script>";
+        echo $html;
+        break;
+    case 'service_sale_cancel':
+        $id = isset($_POST['id']) ? (int) $_POST['id'] : 0;
+        $response = $plugin->cancelServiceSale($id);
+        $html = '';
+        $html .= "<div class='text-center'>";
+
+        if ($response) {
+            $html .= Display::return_message(
+                $plugin->get_lang('OrderCancelled'),
+                'warning'
+            );
+        } else {
+            $html .= Display::return_message('Error - '.$plugin->get_lang('ErrorContactPlatformAdmin'), 'error');
+        }
+
+        $html .= "<a id='finish-button' class='btn btn-primary'>".$plugin->get_lang('ClickHereToFinish')."</a>";
+        $html .= "</div>";
+        $html .= "<script>";
+        $html .= "$('#finish-button').click(function() {";
+        $html .= "location.reload();";
+        $html .= "});";
+        $html .= "</script>";
+        echo $html;
+        break;
+}

plugin/buycourses/src/cecabank_cancel.php

@@ -0,0 +1,30 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * Success page for the purchase of a course in the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+require_once '../config.php';
+
+$plugin = BuyCoursesPlugin::create();
+$cecabankEnabled = $plugin->get('cecabank_enable') === 'true';
+
+if (!$cecabankEnabled) {
+    api_not_allowed(true);
+}
+
+$sale = $plugin->getSale($_SESSION['bc_sale_id']);
+
+if (empty($sale)) {
+    api_not_allowed(true);
+}
+
+Display::addFlash(
+    Display::return_message($plugin->get_lang('ErrorContactPlatformAdmin'), 'error')
+);
+
+unset($_SESSION['bc_sale_id']);
+header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/course_catalog.php');
+exit;

plugin/buycourses/src/cecabank_response.php

@@ -0,0 +1,53 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * Success page for the purchase of a course in the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+require_once '../config.php';
+
+$plugin = BuyCoursesPlugin::create();
+$cecabankEnabled = $plugin->get('cecabank_enable') === 'true';
+
+if (!$cecabankEnabled) {
+    api_not_allowed(true);
+}
+
+$receivedAmount = (float) $_POST['Importe'];
+
+if (empty($_POST['Num_operacion']) || empty($_POST['Firma']) || empty($receivedAmount)) {
+    api_not_allowed(true);
+}
+
+$signature = $plugin->getCecabankSignature($_POST['Num_operacion'], $receivedAmount);
+
+if ($signature != $_POST['Firma']) {
+    api_not_allowed(true);
+}
+
+$sale = $plugin->getSaleFromReference($_POST['Num_operacion']);
+
+if (empty($sale)) {
+    api_not_allowed(true);
+}
+
+$buyingCourse = false;
+$buyingSession = false;
+
+switch ($sale['product_type']) {
+    case BuyCoursesPlugin::PRODUCT_TYPE_COURSE:
+        $buyingCourse = true;
+        $course = $plugin->getCourseInfo($sale['product_id']);
+        break;
+    case BuyCoursesPlugin::PRODUCT_TYPE_SESSION:
+        $buyingSession = true;
+        $session = $plugin->getSessionInfo($sale['product_id']);
+        break;
+}
+
+$saleIsCompleted = $plugin->completeSale($sale['id']);
+if ($saleIsCompleted) {
+    $plugin->storePayouts($sale['id']);
+}

plugin/buycourses/src/cecabank_success.php

@@ -0,0 +1,30 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * Success page for the purchase of a course in the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+require_once '../config.php';
+
+$plugin = BuyCoursesPlugin::create();
+$cecabankEnabled = $plugin->get('cecabank_enable') === 'true';
+
+if (!$cecabankEnabled) {
+    api_not_allowed(true);
+}
+
+$sale = $plugin->getSale($_SESSION['bc_sale_id']);
+
+if (empty($sale)) {
+    api_not_allowed(true);
+}
+
+Display::addFlash(
+    $plugin->getSubscriptionSuccessMessage($sale)
+);
+
+unset($_SESSION['bc_sale_id']);
+header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/course_catalog.php');
+exit;

plugin/buycourses/src/configure_coupon.php

@@ -0,0 +1,204 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * Configuration script for the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+require_once '../config.php';
+
+api_protect_admin_script();
+
+$couponId = $_REQUEST['id'];
+
+if (!isset($couponId)) {
+    api_not_allowed();
+}
+
+$plugin = BuyCoursesPlugin::create();
+
+$coupon = $plugin->getCouponInfo($couponId);
+
+if (!isset($coupon)) {
+    api_not_allowed();
+}
+
+$couponDateRangeFrom = $coupon['valid_start'];
+$couponDateRangeTo = $coupon['valid_end'];
+
+$includeSession = $plugin->get('include_sessions') === 'true';
+$includeServices = $plugin->get('include_services') === 'true';
+
+$entityManager = Database::getManager();
+$userRepo = UserManager::getRepository();
+$currency = $plugin->getSelectedCurrency();
+
+if (empty($currency)) {
+    Display::addFlash(
+        Display::return_message($plugin->get_lang('CurrencyIsNotConfigured'), 'error')
+    );
+}
+
+$currencyIso = null;
+
+$coursesList = CourseManager::get_courses_list(
+    0,
+    0,
+    'title',
+    'asc',
+    -1,
+    null,
+    api_get_current_access_url_id(),
+    false,
+    [],
+    []
+);
+
+foreach ($coursesList as $course) {
+    $courses[$course['id']] = $course['title'];
+}
+
+$sessionsList = SessionManager::get_sessions_list(
+    [],
+    [],
+    null,
+    null,
+    api_get_current_access_url_id(),
+    []
+);
+
+foreach ($sessionsList as $session) {
+    $sessions[$session['id']] = $session['name'];
+}
+
+$servicesList = $plugin->getAllServices();
+
+foreach ($servicesList as $service) {
+    $services[$service['id']] = $service['name'];
+}
+
+$discountTypes = $plugin->getCouponDiscountTypes();
+
+// Build the form
+$form = new FormValidator('add_coupon');
+$form->addText('code', $plugin->get_lang('CouponCode'), false);
+$form->addText('discount_type', $plugin->get_lang('CouponDiscountType'), false);
+$form->addText('discount_amount', $plugin->get_lang('CouponDiscount'), false);
+$form->addDateRangePicker(
+    'date',
+    get_lang('Date'),
+    true,
+    [
+        'value' => "$couponDateRangeFrom / $couponDateRangeTo",
+    ]
+);
+
+$form->addCheckBox('active', $plugin->get_lang('CouponActive'));
+$form->addElement(
+    'advmultiselect',
+    'courses',
+    get_lang('Courses'),
+    $courses
+);
+
+if ($includeSession) {
+    $form->addElement(
+        'advmultiselect',
+        'sessions',
+        get_lang('Sessions'),
+        $sessions
+    );
+}
+
+if ($includeServices) {
+    $form->addElement(
+        'advmultiselect',
+        'services',
+        get_lang('Services'),
+        $services
+    );
+}
+
+$form->addHidden('id', null);
+
+$coursesAdded = $coupon["courses"];
+if (!empty($coursesAdded)) {
+    $coursesAdded = array_column($coursesAdded, 'id');
+}
+
+$sessionsAdded = $coupon["sessions"];
+if (!empty($sessionsAdded)) {
+    $sessionsAdded = array_column($sessionsAdded, 'id');
+}
+
+$servicesAdded = $coupon["services"];
+if (!empty($servicesAdded)) {
+    $servicesAdded = array_column($servicesAdded, 'id');
+}
+
+$formDefaults = [
+    'id' => $coupon['id'],
+    'code' => $coupon['code'],
+    'discount_type' => $discountTypes[$coupon['discount_type']],
+    'discount_amount' => $coupon['discount_amount'],
+    'date' => "$couponDateRangeFrom / $couponDateRangeTo",
+    'active' => $coupon['active'],
+    'courses' => $coursesAdded,
+    'sessions' => $sessionsAdded,
+    'services' => $servicesAdded,
+];
+
+$button = $form->addButtonSave(get_lang('Save'));
+if (empty($currency)) {
+    $button->setAttribute('disabled');
+}
+
+$form->freeze(['code', 'discount_type', 'discount_amount']);
+
+if ($form->validate()) {
+    $formValues = $form->exportValues();
+
+    $coupon['id'] = $formValues['id'];
+    $coupon['valid_start'] = $formValues['date_start'];
+    $coupon['valid_end'] = $formValues['date_end'];
+    $coupon['active'] = $formValues['active'];
+    $coupon['courses'] = isset($formValues['courses']) ? $formValues['courses'] : [];
+    $coupon['sessions'] = isset($formValues['sessions']) ? $formValues['sessions'] : [];
+    $coupon['services'] = isset($formValues['services']) ? $formValues['services'] : [];
+
+    $result = $plugin->updateCouponData($coupon);
+
+    if ($result) {
+        Display::addFlash(
+            Display::return_message(
+                $plugin->get_lang('CouponUpdate'),
+                'success',
+                false
+            )
+        );
+
+        header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/configure_coupon.php?id='.$coupon["id"]);
+    } else {
+        header('Location:'.api_get_self().'?'.$queryString);
+    }
+
+    exit;
+}
+
+$form->setDefaults($formDefaults);
+
+$templateName = $plugin->get_lang('ConfigureCoupon');
+$interbreadcrumb[] = [
+    'url' => 'paymentsetup.php',
+    'name' => get_lang('Configuration'),
+];
+$interbreadcrumb[] = [
+    'url' => 'coupons.php',
+    'name' => $plugin->get_lang('CouponList'),
+];
+
+$template = new Template($templateName);
+$template->assign('header', $templateName);
+$template->assign('content', $form->returnForm());
+$template->display_one_col_template();

plugin/buycourses/src/configure_course.php

@@ -0,0 +1,363 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * Configuration script for the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once '../config.php';
+
+api_protect_admin_script();
+
+$id = isset($_REQUEST['id']) ? (int) $_REQUEST['id'] : 0;
+$type = isset($_REQUEST['type']) ? (int) $_REQUEST['type'] : 0;
+
+if (empty($id) || empty($type)) {
+    api_not_allowed();
+}
+
+$plugin = BuyCoursesPlugin::create();
+$commissionsEnable = $plugin->get('commissions_enable');
+
+if ($commissionsEnable == 'true') {
+    $htmlHeadXtra[] = '<script type="text/javascript" src="'.api_get_path(WEB_PLUGIN_PATH)
+        .'buycourses/resources/js/commissions.js"></script>';
+    $commissions = '';
+}
+
+$includeSession = $plugin->get('include_sessions') === 'true';
+$editingCourse = $type === BuyCoursesPlugin::PRODUCT_TYPE_COURSE;
+$editingSession = $type === BuyCoursesPlugin::PRODUCT_TYPE_SESSION;
+
+$entityManager = Database::getManager();
+$userRepo = UserManager::getRepository();
+$currency = $plugin->getSelectedCurrency();
+
+if (empty($currency)) {
+    Display::addFlash(
+        Display::return_message($plugin->get_lang('CurrencyIsNotConfigured'), 'error')
+    );
+    $currency = null;
+}
+
+$currencyIso = null;
+
+if ($editingCourse) {
+    $course = $entityManager->find('ChamiloCoreBundle:Course', $id);
+
+    if (!$course) {
+        api_not_allowed(true);
+    }
+
+    /*if (!$plugin->isValidCourse($course)) {
+        api_not_allowed(true);
+    }*/
+
+    $courseItem = $plugin->getCourseForConfiguration($course, $currency);
+    $defaultBeneficiaries = [];
+    $teachers = $course->getTeachers();
+    $teachersOptions = [];
+
+    foreach ($teachers as $courseTeacher) {
+        $teacher = $courseTeacher->getUser();
+        $teachersOptions[] = [
+            'text' => $teacher->getCompleteName(),
+            'value' => $teacher->getId(),
+        ];
+        $defaultBeneficiaries[] = $teacher->getId();
+    }
+
+    if (!empty($courseItem['item_id'])) {
+        $currentBeneficiaries = $plugin->getItemBeneficiaries($courseItem['course_id']);
+        if (!empty($currentBeneficiaries)) {
+            $defaultBeneficiaries = array_column($currentBeneficiaries, 'user_id');
+            if ($commissionsEnable === 'true') {
+                $defaultCommissions = array_column($currentBeneficiaries, 'commissions');
+                foreach ($defaultCommissions as $defaultCommission) {
+                    $commissions .= $defaultCommission.',';
+                }
+                $commissions = substr($commissions, 0, -1);
+            }
+        }
+
+        $currencyIso = $courseItem['currency'];
+        $formDefaults = [
+            'product_type' => get_lang('Course'),
+            'id' => $courseItem['course_id'],
+            'type' => BuyCoursesPlugin::PRODUCT_TYPE_COURSE,
+            'name' => $courseItem['course_title'],
+            'visible' => $courseItem['visible'],
+            'price' => $courseItem['price'],
+            'tax_perc' => $courseItem['tax_perc'],
+            'beneficiaries' => $defaultBeneficiaries,
+            $commissionsEnable == 'true' ? 'commissions' : '' => $commissionsEnable == 'true' ? $commissions : '',
+        ];
+    } else {
+        $formDefaults = [
+            'product_type' => get_lang('Course'),
+            'id' => $courseItem['course_id'],
+            'type' => BuyCoursesPlugin::PRODUCT_TYPE_COURSE,
+            'name' => $courseItem['course_title'],
+            'visible' => false,
+            'price' => 0,
+            'tax_perc' => 0,
+            'beneficiaries' => [],
+            $commissionsEnable == 'true' ? 'commissions' : '' => $commissionsEnable == 'true' ? '' : '',
+        ];
+    }
+} elseif ($editingSession) {
+    if (!$includeSession) {
+        api_not_allowed(true);
+    }
+
+    $session = $entityManager->find('ChamiloCoreBundle:Session', $id);
+    if (!$session) {
+        api_not_allowed(true);
+    }
+
+    $sessionItem = $plugin->getSessionForConfiguration($session, $currency);
+    $generalCoach = $session->getGeneralCoach();
+    $generalCoachOption = [
+        'text' => $generalCoach->getCompleteName(),
+        'value' => $generalCoach->getId(),
+    ];
+    $defaultBeneficiaries = [
+        $generalCoach->getId(),
+    ];
+    $courseCoachesOptions = [];
+    $sessionCourses = $session->getCourses();
+
+    foreach ($sessionCourses as $sessionCourse) {
+        $courseCoaches = $userRepo->getCoachesForSessionCourse($session, $sessionCourse->getCourse());
+
+        foreach ($courseCoaches as $courseCoach) {
+            if ($generalCoach->getId() === $courseCoach->getId()) {
+                continue;
+            }
+
+            $courseCoachesOptions[] = [
+                'text' => $courseCoach->getCompleteName(),
+                'value' => $courseCoach->getId(),
+            ];
+            $defaultBeneficiaries[] = $courseCoach->getId();
+        }
+    }
+
+    if ($sessionItem['item_id']) {
+        $currentBeneficiaries = $plugin->getItemBeneficiaries($sessionItem['item_id']);
+    }
+
+    if (!empty($currentBeneficiaries)) {
+        $defaultBeneficiaries = array_column($currentBeneficiaries, 'user_id');
+
+        if ($commissionsEnable == 'true') {
+            $defaultCommissions = array_column($currentBeneficiaries, 'commissions');
+
+            foreach ($defaultCommissions as $defaultCommission) {
+                $commissions .= $defaultCommission.',';
+            }
+
+            $commissions = substr($commissions, 0, -1);
+        }
+    }
+
+    $currencyIso = $sessionItem['currency'];
+    $formDefaults = [
+        'product_type' => get_lang('Session'),
+        'id' => $session->getId(),
+        'type' => BuyCoursesPlugin::PRODUCT_TYPE_SESSION,
+        'name' => $sessionItem['session_name'],
+        'visible' => $sessionItem['visible'],
+        'price' => $sessionItem['price'],
+        'tax_perc' => $sessionItem['tax_perc'],
+        'beneficiaries' => $defaultBeneficiaries,
+        $commissionsEnable == 'true' ? 'commissions' : '' => $commissionsEnable == 'true' ? $commissions : '',
+    ];
+} else {
+    api_not_allowed(true);
+}
+
+if ($commissionsEnable === 'true') {
+    $htmlHeadXtra[] = "
+        <script>
+            $(function() {
+                if ($('[name=\"commissions\"]').val() === '') {
+                    $('#panelSliders').html(
+                        '<button id=\"setCommissionsButton\" class=\"btn btn-warning\">'
+                            + '".get_plugin_lang('SetCommissions', 'BuyCoursesPlugin')."'
+                    );
+                } else {
+                    showSliders(100, 'default', '".$commissions."');
+                }
+
+                var maxPercentage = 100;
+                $('#selectBox').on('change', function() {
+                    $('#panelSliders').html('');
+                });
+
+                $('#setCommissionsButton').on('click', function() {
+                    $('#panelSliders').html('');
+                    showSliders(maxPercentage, 'renew');
+                });
+            });
+        </script>
+    ";
+}
+
+$globalSettingsParams = $plugin->getGlobalParameters();
+
+$form = new FormValidator('beneficiaries');
+$form->addText('product_type', $plugin->get_lang('ProductType'), false);
+$form->addText('name', get_lang('Name'), false);
+$form->addCheckBox(
+    'visible',
+    $plugin->get_lang('VisibleInCatalog'),
+    $plugin->get_lang('ShowOnCourseCatalog')
+);
+$form->addElement(
+    'number',
+    'price',
+    [$plugin->get_lang('Price'), null, $currencyIso],
+    ['step' => 0.01]
+);
+$form->addElement(
+    'number',
+    'tax_perc',
+    [$plugin->get_lang('TaxPerc'), $plugin->get_lang('TaxPercDescription'), '%'],
+    ['step' => 1, 'placeholder' => $globalSettingsParams['global_tax_perc'].'% '.$plugin->get_lang('ByDefault')]
+);
+$beneficiariesSelect = $form->addSelect(
+    'beneficiaries',
+    $plugin->get_lang('Beneficiaries'),
+    null,
+    ['multiple' => 'multiple', 'id' => 'selectBox']
+);
+
+if ($editingCourse) {
+    $teachersOptions = api_unique_multidim_array($teachersOptions, 'value');
+    $beneficiariesSelect->addOptGroup($teachersOptions, get_lang('Teachers'));
+} elseif ($editingSession) {
+    $courseCoachesOptions = api_unique_multidim_array($courseCoachesOptions, 'value');
+    $beneficiariesSelect->addOptGroup([$generalCoachOption], get_lang('SessionGeneralCoach'));
+    $beneficiariesSelect->addOptGroup($courseCoachesOptions, get_lang('SessionCourseCoach'));
+}
+
+if ($commissionsEnable === 'true') {
+    $platformCommission = $plugin->getPlatformCommission();
+    $form->addHtml(
+        '
+        <div class="form-group">
+            <label for="sliders" class="col-sm-2 control-label">
+                '.get_plugin_lang('Commissions', 'BuyCoursesPlugin').'
+            </label>
+            <div class="col-sm-8">
+                '.Display::return_message(
+                    sprintf($plugin->get_lang('TheActualPlatformCommissionIsX'), $platformCommission['commission'].'%'),
+                    'info',
+                    false
+                ).'
+                <div id="panelSliders"></div>
+            </div>
+        </div>'
+    );
+    $form->addHidden('commissions', '');
+}
+
+$form->addHidden('type', null);
+$form->addHidden('id', null);
+$button = $form->addButtonSave(get_lang('Save'));
+
+if (empty($currency)) {
+    $button->setAttribute('disabled');
+}
+
+$form->freeze(['product_type', 'name']);
+
+if ($form->validate()) {
+    $formValues = $form->exportValues();
+    $id = $formValues['id'];
+    $type = $formValues['type'];
+
+    $productItem = $plugin->getItemByProduct($id, $type);
+    if (isset($formValues['visible'])) {
+        $taxPerc = $formValues['tax_perc'] != '' ? (int) $formValues['tax_perc'] : null;
+        if (!empty($productItem)) {
+            $plugin->updateItem(
+                [
+                    'price' => floatval($formValues['price']),
+                    'tax_perc' => $taxPerc,
+                ],
+                $id,
+                $type
+            );
+        } else {
+            $itemId = $plugin->registerItem([
+                'currency_id' => (int) $currency['id'],
+                'product_type' => $type,
+                'product_id' => $id,
+                'price' => floatval($_POST['price']),
+                'tax_perc' => $taxPerc,
+            ]);
+            $productItem['id'] = $itemId;
+        }
+
+        $plugin->deleteItemBeneficiaries($productItem['id']);
+
+        if (isset($formValues['beneficiaries'])) {
+            if ($commissionsEnable === 'true') {
+                $usersId = $formValues['beneficiaries'];
+                $commissions = explode(',', $formValues['commissions']);
+                $commissions = (count($usersId) != count($commissions))
+                    ? array_fill(0, count($usersId), 0)
+                    : $commissions;
+                $beneficiaries = array_combine($usersId, $commissions);
+            } else {
+                $usersId = $formValues['beneficiaries'];
+                $commissions = array_fill(0, count($usersId), 0);
+                $beneficiaries = array_combine($usersId, $commissions);
+            }
+            $plugin->registerItemBeneficiaries($productItem['id'], $beneficiaries);
+        }
+    } else {
+        if (!empty($productItem['id'])) {
+            $plugin->deleteItem($productItem['id']);
+        }
+    }
+    $url = 'list.php';
+    if ($type == 2) {
+        $url = 'list_session.php';
+    }
+    header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/'.$url);
+    exit;
+}
+
+$form->setDefaults($formDefaults);
+
+$templateName = '';
+$interbreadcrumb[] = [
+    'url' => 'paymentsetup.php',
+    'name' => get_lang('Configuration'),
+];
+switch ($type) {
+    case 2:
+        $interbreadcrumb[] = [
+            'url' => 'list_session.php',
+            'name' => $plugin->get_lang('Sessions'),
+        ];
+        $templateName = $plugin->get_lang('Sessions');
+        break;
+    default:
+        $interbreadcrumb[] = [
+            'url' => 'list.php',
+            'name' => $plugin->get_lang('AvailableCourses'),
+        ];
+        $templateName = $plugin->get_lang('AvailableCourse');
+}
+
+$template = new Template($templateName);
+$template->assign('header', $templateName);
+$template->assign('content', $form->returnForm());
+$template->display_one_col_template();

plugin/buycourses/src/configure_frequency.php

@@ -0,0 +1,119 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * Configuration page for subscriptions for the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+api_protect_admin_script(true);
+
+$plugin = BuyCoursesPlugin::create();
+
+if (isset($_GET['action'], $_GET['d'], $_GET['n'])) {
+    if ($_GET['action'] == 'delete_frequency') {
+        if (is_numeric($_GET['d'])) {
+            $frequency = $plugin->selectFrequency($_GET['d']);
+
+            if (!empty($frequency)) {
+                $subscriptionsItems = $plugin->getSubscriptionsItemsByDuration($_GET['d']);
+
+                if (empty($subscriptionsItems)) {
+                    $plugin->deleteFrequency($_GET['d']);
+
+                    Display::addFlash(
+                        Display::return_message($plugin->get_lang('FrequencyRemoved'), 'success')
+                    );
+                } else {
+                    Display::addFlash(
+                        Display::return_message($plugin->get_lang('SubscriptionPeriodOnUse'), 'error')
+                    );
+                }
+            } else {
+                Display::addFlash(
+                    Display::return_message($plugin->get_lang('FrequencyNotExits'), 'error')
+                );
+            }
+        } else {
+            Display::addFlash(
+                Display::return_message($plugin->get_lang('FrequencyIncorrect'), 'error')
+            );
+        }
+
+        header('Location: '.api_get_self());
+        exit;
+    }
+}
+
+$frequencies = $plugin->getFrequenciesList();
+
+$globalSettingsParams = $plugin->getGlobalParameters();
+
+$form = new FormValidator('add_frequency');
+
+$form->addText('name', get_lang('Name'), false);
+
+$form->addElement(
+    'number',
+    'duration',
+    [$plugin->get_lang('Duration'), $plugin->get_lang('Days')],
+    ['step' => 1, 'placeholder' => $plugin->get_lang('SubscriptionFrequencyValueDays')]
+);
+
+$button = $form->addButtonSave(get_lang('Save'));
+
+if ($form->validate()) {
+    $formValues = $form->getSubmitValues();
+    $duration = $formValues['duration'];
+    $name = $formValues['name'];
+
+    $frequency = $plugin->selectFrequency($duration);
+
+    if (!empty($frequency)) {
+        $result = $plugin->updateFrequency($duration, $name);
+
+        if (!isset($result)) {
+            Display::addFlash(
+                Display::return_message($plugin->get_lang('FrequencyNotUpdated'), 'error')
+            );
+        }
+    } else {
+        $result = $plugin->addFrequency($duration, $name);
+
+        if (!isset($result)) {
+            Display::addFlash(
+                Display::return_message($plugin->get_lang('FrequencyNotSaved'), 'error')
+            );
+        }
+    }
+
+    header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/configure_frequency.php');
+
+    exit;
+}
+
+//$form->setDefaults($formDefaults);
+
+$templateName = $plugin->get_lang('FrequencyAdd');
+$interbreadcrumb[] = [
+    'url' => 'subscriptions_courses.php',
+    'name' => get_lang('Configuration'),
+];
+$interbreadcrumb[] = [
+    'url' => 'subscriptions_courses.php',
+    'name' => $plugin->get_lang('SubscriptionList'),
+];
+
+$template = new Template($templateName);
+$template->assign('header', $templateName);
+$template->assign('items_form', $form->returnForm());
+$template->assign('frequencies_list', $frequencies);
+
+$content = $template->fetch('buycourses/view/configure_frequency.tpl');
+$template->assign('content', $content);
+
+$template->display_one_col_template();

plugin/buycourses/src/configure_subscription.php

@@ -0,0 +1,246 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * Configuration page for subscriptions for the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+api_protect_admin_script(true);
+
+$id = isset($_REQUEST['id']) ? (int) $_REQUEST['id'] : 0;
+$type = isset($_REQUEST['type']) ? (int) $_REQUEST['type'] : 0;
+
+if (!isset($id) || !isset($type)) {
+    api_not_allowed();
+}
+
+$queryString = 'id='.intval($_REQUEST['id']).'&type='.intval($_REQUEST['type']);
+
+$editingCourse = $type === BuyCoursesPlugin::PRODUCT_TYPE_COURSE;
+$editingSession = $type === BuyCoursesPlugin::PRODUCT_TYPE_SESSION;
+
+$plugin = BuyCoursesPlugin::create();
+
+$includeSession = $plugin->get('include_sessions') === 'true';
+
+if (isset($_GET['action'], $_GET['d'])) {
+    if ($_GET['action'] == 'delete_frequency') {
+        $plugin->deleteSubscription($type, $id, $_GET['d']);
+
+        Display::addFlash(
+            Display::return_message(get_lang('ItemRemoved'), 'success')
+        );
+
+        header('Location: '.api_get_self().'?'.$queryString);
+        exit;
+    }
+}
+
+$entityManager = Database::getManager();
+$userRepo = UserManager::getRepository();
+$currency = $plugin->getSelectedCurrency();
+
+if (empty($currency)) {
+    Display::addFlash(
+        Display::return_message($plugin->get_lang('CurrencyIsNotConfigured'), 'error')
+    );
+}
+
+$subscriptions = $plugin->getSubscriptions($type, $id);
+
+$taxtPerc = 0;
+
+if (isset($subscriptions) && !empty($subscriptions)) {
+    $taxtPerc = $subscriptions[0]['tax_perc'];
+}
+
+$currencyIso = null;
+
+if ($editingCourse) {
+    $course = $entityManager->find('ChamiloCoreBundle:Course', $id);
+    if (!$course) {
+        api_not_allowed(true);
+    }
+
+    $courseItem = $plugin->getCourseForConfiguration($course, $currency);
+
+    $currencyIso = $courseItem['currency'];
+    $formDefaults = [
+        'product_type' => get_lang('Course'),
+        'id' => $courseItem['course_id'],
+        'type' => BuyCoursesPlugin::PRODUCT_TYPE_COURSE,
+        'name' => $courseItem['course_title'],
+        'visible' => $courseItem['visible'],
+        'tax_perc' => $taxtPerc,
+    ];
+} elseif ($editingSession) {
+    if (!$includeSession) {
+        api_not_allowed(true);
+    }
+
+    $session = $entityManager->find('ChamiloCoreBundle:Session', $id);
+    if (!$session) {
+        api_not_allowed(true);
+    }
+
+    $sessionItem = $plugin->getSessionForConfiguration($session, $currency);
+
+    $currencyIso = $sessionItem['currency'];
+    $formDefaults = [
+        'product_type' => get_lang('Session'),
+        'id' => $session->getId(),
+        'type' => BuyCoursesPlugin::PRODUCT_TYPE_SESSION,
+        'name' => $sessionItem['session_name'],
+        'visible' => $sessionItem['visible'],
+        'tax_perc' => $taxtPerc,
+    ];
+} else {
+    api_not_allowed(true);
+}
+
+$globalSettingsParams = $plugin->getGlobalParameters();
+
+$form = new FormValidator('add_subscription');
+
+$form->addText('product_type', $plugin->get_lang('ProductType'), false);
+$form->addText('name', get_lang('Name'), false);
+
+$form->freeze(['product_type', 'name']);
+
+$form->addElement(
+    'number',
+    'tax_perc',
+    [$plugin->get_lang('TaxPerc'), $plugin->get_lang('TaxPercDescription'), '%'],
+    ['step' => 1, 'placeholder' => $globalSettingsParams['global_tax_perc'].'% '.$plugin->get_lang('ByDefault')]
+);
+
+$frequenciesOptions = $plugin->getFrequencies();
+
+$frequencyForm = new FormValidator('frequency_config', 'post', api_get_self().'?'.$queryString);
+
+$frequencyFormDefaults = [
+    'id' => $id,
+    'type' => $type,
+    'tax_perc' => $taxtPerc,
+    'currency_id' => $currency['id'],
+];
+
+$frequencyForm->setDefaults($frequencyFormDefaults);
+
+if ($frequencyForm->validate()) {
+    $frequencyFormValues = $frequencyForm->getSubmitValues();
+
+    $subscription['product_id'] = $frequencyFormValues['id'];
+    $subscription['product_type'] = $frequencyFormValues['type'];
+    $subscription['tax_perc'] = $frequencyFormValues['tax_perc'] != '' ? (int) $frequencyFormValues['tax_perc'] : null;
+    $subscription['currency_id'] = $currency['id'];
+    $duration = $frequencyFormValues['duration'];
+    $price = $frequencyFormValues['price'];
+
+    for ($i = 0; $i <= count($subscriptions); $i++) {
+        if ($subscriptions[$i]['duration'] == $duration) {
+            Display::addFlash(
+                Display::return_message($plugin->get_lang('SubscriptionAlreadyExists'), 'error')
+            );
+
+            header('Location:'.api_get_self().'?'.$queryString);
+            exit;
+        }
+    }
+
+    $subscription['frequencies'] = [['duration' => $duration, 'price' => $price]];
+
+    $result = $plugin->addNewSubscription($subscription);
+
+    Display::addFlash(
+        Display::return_message(get_lang('Saved'), 'success')
+    );
+
+    header('Location:'.api_get_self().'?'.$queryString);
+    exit;
+}
+
+$frequencyForm->addElement(
+    'select',
+    'duration',
+    $plugin->get_lang('Duration'),
+    $frequenciesOptions,
+    ['cols-size' => [2, 8, 2]]
+);
+
+$frequencyForm->addElement(
+    'number',
+    'price',
+    [$plugin->get_lang('Price'), null, $currencyIso],
+    false,
+    [
+        'step' => 1,
+        'cols-size' => [3, 8, 1],
+    ]
+);
+
+$frequencyForm->addHidden('type', $type);
+$frequencyForm->addHidden('id', $id);
+$frequencyForm->addHidden('tax_perc', $taxtPerc);
+$frequencyForm->addHidden('currency_id', $currency['id']);
+$frequencyForm->addButtonCreate('Add');
+
+for ($i = 0; $i < count($subscriptions); $i++) {
+    if ($subscriptions[$i]['duration'] > 0) {
+        $subscriptions[$i]['durationName'] = $frequenciesOptions[$subscriptions[$i]['duration']];
+    }
+}
+
+$form->addHidden('type', $type);
+$form->addHidden('id', $id);
+$button = $form->addButtonSave(get_lang('Save'));
+
+if (empty($currency)) {
+    $button->setAttribute('disabled');
+}
+
+if ($form->validate()) {
+    $formValues = $form->getSubmitValues();
+    $id = $formValues['id'];
+    $type = $formValues['type'];
+    $taxPerc = $formValues['tax_perc'] != '' ? (int) $formValues['tax_perc'] : null;
+
+    $result = $plugin->updateSubscriptions($type, $id, $taxPerc);
+
+    if ($result) {
+        header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/subscriptions_courses.php');
+    } else {
+        header('Location:'.api_get_self().'?'.$queryString);
+    }
+
+    exit;
+}
+
+$form->setDefaults($formDefaults);
+
+$templateName = $plugin->get_lang('SubscriptionAdd');
+$interbreadcrumb[] = [
+    'url' => 'subscriptions_courses.php',
+    'name' => get_lang('Configuration'),
+];
+$interbreadcrumb[] = [
+    'url' => 'subscriptions_courses.php',
+    'name' => $plugin->get_lang('SubscriptionList'),
+];
+
+$template = new Template($templateName);
+$template->assign('header', $templateName);
+$template->assign('items_form', $form->returnForm());
+$template->assign('frequency_form', $frequencyForm->returnForm());
+$template->assign('subscriptions', $subscriptions);
+$template->assign('currencyIso', $currencyIso);
+
+$content = $template->fetch('buycourses/view/configure_subscription.tpl');
+$template->assign('content', $content);
+
+$template->display_one_col_template();

plugin/buycourses/src/coupon_add.php

@@ -0,0 +1,167 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * Configuration script for the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+require_once '../config.php';
+
+api_protect_admin_script();
+
+$plugin = BuyCoursesPlugin::create();
+
+$includeSession = $plugin->get('include_sessions') === 'true';
+$includeServices = $plugin->get('include_services') === 'true';
+
+$entityManager = Database::getManager();
+$userRepo = UserManager::getRepository();
+$currency = $plugin->getSelectedCurrency();
+
+if (empty($currency)) {
+    Display::addFlash(
+        Display::return_message($plugin->get_lang('CurrencyIsNotConfigured'), 'error')
+    );
+}
+
+$currencyIso = null;
+
+$coursesList = CourseManager::get_courses_list(
+    0,
+    0,
+    'title',
+    'asc',
+    -1,
+    null,
+    api_get_current_access_url_id(),
+    false,
+    [],
+    []
+);
+
+foreach ($coursesList as $course) {
+    $courses[$course['id']] = $course['title'];
+}
+
+$sessionsList = SessionManager::get_sessions_list(
+    [],
+    [],
+    null,
+    null,
+    api_get_current_access_url_id(),
+    []
+);
+
+foreach ($sessionsList as $session) {
+    $sessions[$session['id']] = $session['name'];
+}
+
+$servicesList = $plugin->getAllServices();
+
+foreach ($servicesList as $service) {
+    $services[$service['id']] = $service['name'];
+}
+
+$discountTypes = $plugin->getCouponDiscountTypes();
+
+// Build the form
+$form = new FormValidator('add_coupon');
+$form->addText('code', $plugin->get_lang('CouponCode'), true);
+$form->addRadio('discount_type', $plugin->get_lang('CouponDiscountType'), $discountTypes);
+$form->addElement(
+    'number',
+    'discount_amount',
+    [$plugin->get_lang('CouponDiscount'), null, $currencyIso],
+    ['step' => 1]
+);
+$form->addDateRangePicker('date', get_lang('Date'), true);
+$form->addCheckBox('active', get_lang('Active'));
+$form->addElement(
+    'advmultiselect',
+    'courses',
+    get_lang('Courses'),
+    $courses
+);
+
+if ($includeSession) {
+    $form->addElement(
+        'advmultiselect',
+        'sessions',
+        get_lang('Sessions'),
+        $sessions
+    );
+}
+
+if ($includeServices) {
+    $form->addElement(
+        'advmultiselect',
+        'services',
+        get_lang('Services'),
+        $services
+    );
+}
+
+$button = $form->addButtonSave(get_lang('Save'));
+
+if (empty($currency)) {
+    $button->setAttribute('disabled');
+}
+
+if ($form->validate()) {
+    $formValues = $form->exportValues();
+
+    $coupon['code'] = $formValues['code'];
+    $coupon['discount_type'] = $formValues['discount_type'];
+    $coupon['discount_amount'] = $formValues['discount_amount'];
+    $coupon['valid_start'] = $formValues['date_start'];
+    $coupon['valid_end'] = $formValues['date_end'];
+    $coupon['active'] = $formValues['active'];
+
+    if ($coupon['discount_type'] == BuyCoursesPlugin::COUPON_DISCOUNT_TYPE_PERCENTAGE && $coupon['discount_amount'] > 100) {
+        Display::addFlash(
+            Display::return_message($plugin->get_lang('CouponDiscountExceed100'), 'error', false)
+        );
+    }
+
+    $coupon['courses'] = isset($formValues['courses']) ? $formValues['courses'] : [];
+    $coupon['sessions'] = isset($formValues['sessions']) ? $formValues['sessions'] : [];
+    $coupon['services'] = isset($formValues['services']) ? $formValues['services'] : [];
+
+    $result = $plugin->addNewCoupon($coupon);
+
+    if ($result) {
+        header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/coupons.php');
+    } else {
+        header('Location:'.api_get_self().'?'.$queryString);
+    }
+
+    exit;
+}
+
+$formDefaults = [
+    'code' => '',
+    'discount_type' => null,
+    'discount_amount' => 0,
+    'active' => 0,
+    'courses' => [],
+    'sessions' => [],
+    'services' => [],
+];
+
+$form->setDefaults($formDefaults);
+
+$templateName = $plugin->get_lang('CouponAdd');
+$interbreadcrumb[] = [
+    'url' => 'paymentsetup.php',
+    'name' => get_lang('Configuration'),
+];
+$interbreadcrumb[] = [
+    'url' => 'coupons.php',
+    'name' => $plugin->get_lang('CouponList'),
+];
+
+$template = new Template($templateName);
+$template->assign('header', $templateName);
+$template->assign('content', $form->returnForm());
+$template->display_one_col_template();

plugin/buycourses/src/coupons.php

@@ -0,0 +1,109 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * List of couponsof the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once '../config.php';
+
+api_protect_admin_script();
+
+$plugin = BuyCoursesPlugin::create();
+
+if (isset($_GET['coupon_id'])) {
+    $coupon = $plugin->getCouponInfo($_GET['coupon_id']);
+
+    if (empty($coupon)) {
+        api_not_allowed(true);
+    }
+
+    $urlToRedirect = api_get_self().'?';
+
+    switch ($_GET['action']) {
+        case 'deactivate':
+            //activate coupon
+            break;
+        case 'activate':
+            //deactivate coupon
+            break;
+    }
+
+    header("Location: $urlToRedirect");
+    exit;
+}
+
+$discountTypes = $plugin->getCouponDiscountTypes();
+$couponStatuses = $plugin->getCouponStatuses();
+
+$selectedFilterType = '0';
+$selectedStatus = isset($_GET['status']) ? $_GET['status'] : BuyCoursesPlugin::COUPON_STATUS_ACTIVE;
+
+$form = new FormValidator('search', 'get');
+
+if ($form->validate()) {
+    $selectedStatus = $form->getSubmitValue('status');
+
+    if ($selectedStatus === false) {
+        $selectedStatus = BuyCoursesPlugin::COUPON_STATUS_ACTIVE;
+    }
+
+    if ($selectedFilterType === false) {
+        $selectedFilterType = '0';
+    }
+}
+
+$form->addHtml('<div id="report-by-status" '.($selectedFilterType !== '0' ? 'style="display:none"' : '').'>');
+$form->addSelect('status', $plugin->get_lang('CouponStatus'), $couponStatuses);
+$form->addHtml('</div>');
+$form->addButtonFilter(get_lang('Search'));
+$form->setDefaults([
+    'filter_type' => $selectedFilterType,
+    'status' => $selectedStatus,
+]);
+
+$coupons = $plugin->getCouponsListByStatus($selectedStatus);
+$currency = $plugin->getSelectedCurrency();
+
+foreach ($coupons as &$coupon) {
+    if ($coupon['discount_type'] == BuyCoursesPlugin::COUPON_DISCOUNT_TYPE_PERCENTAGE) {
+        $coupon['discount_value'] = $coupon['discount_amount']." %";
+    } elseif ($coupon['discount_type'] == BuyCoursesPlugin::COUPON_DISCOUNT_TYPE_AMOUNT) {
+        $coupon['discount_value'] = $plugin->getPriceWithCurrencyFromIsoCode($coupon['discount_amount'], $currency['iso_code']);
+    }
+    $coupon['discount_type'] = $discountTypes[$coupon['discount_type']];
+}
+
+$interbreadcrumb[] = ['url' => '../index.php', 'name' => $plugin->get_lang('plugin_title')];
+
+$htmlHeadXtra[] = api_get_css(api_get_path(WEB_PLUGIN_PATH).'buycourses/resources/css/style.css');
+
+$templateName = $plugin->get_lang('CouponList');
+$template = new Template($templateName);
+
+$toolbar = Display::url(
+    Display::returnFontAwesomeIcon('fas fa-plus').
+    $plugin->get_lang('CouponAdd'),
+    api_get_path(WEB_PLUGIN_PATH).'buycourses/src/coupon_add.php',
+    ['class' => 'btn btn-primary']
+);
+
+$template->assign(
+    'actions',
+    Display::toolbarAction('toolbar', [$toolbar])
+);
+
+$template->assign('form', $form->returnForm());
+$template->assign('selected_status', $selectedStatus);
+$template->assign('coupon_list', $coupons);
+$template->assign('coupon_status_active', BuyCoursesPlugin::COUPON_STATUS_ACTIVE);
+$template->assign('coupon_status_disable', BuyCoursesPlugin::COUPON_STATUS_DISABLE);
+
+$content = $template->fetch('buycourses/view/coupons.tpl');
+
+$template->assign('header', $templateName);
+$template->assign('content', $content);
+$template->display_one_col_template();

plugin/buycourses/src/course_catalog.php

@@ -0,0 +1,100 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * List of courses.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+$plugin = BuyCoursesPlugin::create();
+$includeSessions = $plugin->get('include_sessions') === 'true';
+$includeServices = $plugin->get('include_services') === 'true';
+
+$nameFilter = '';
+$minFilter = 0;
+$maxFilter = 0;
+
+$form = new FormValidator(
+    'search_filter_form',
+    'get',
+    null,
+    null,
+    [],
+    FormValidator::LAYOUT_INLINE
+);
+
+if ($form->validate()) {
+    $formValues = $form->getSubmitValues();
+    $nameFilter = isset($formValues['name']) ? $formValues['name'] : null;
+    $minFilter = isset($formValues['min']) ? $formValues['min'] : 0;
+    $maxFilter = isset($formValues['max']) ? $formValues['max'] : 0;
+}
+
+$form->addHeader($plugin->get_lang('SearchFilter'));
+$form->addText('name', get_lang('CourseName'), false);
+$form->addElement(
+    'number',
+    'min',
+    $plugin->get_lang('MinimumPrice'),
+    ['step' => '0.01', 'min' => '0']
+);
+$form->addElement(
+    'number',
+    'max',
+    $plugin->get_lang('MaximumPrice'),
+    ['step' => '0.01', 'min' => '0']
+);
+$form->addHtml('<hr>');
+$form->addButtonFilter(get_lang('Search'));
+
+$pageSize = BuyCoursesPlugin::PAGINATION_PAGE_SIZE;
+$currentPage = isset($_GET['page']) ? (int) $_GET['page'] : 1;
+$first = $pageSize * ($currentPage - 1);
+$courseList = $plugin->getCatalogCourseList($first, $pageSize, $nameFilter, $minFilter, $maxFilter);
+$totalItems = $plugin->getCatalogCourseList($first, $pageSize, $nameFilter, $minFilter, $maxFilter, 'count');
+$pagesCount = ceil($totalItems / $pageSize);
+
+$pagination = BuyCoursesPlugin::returnPagination(api_get_self(), $currentPage, $pagesCount, $totalItems);
+
+// View
+if (api_is_platform_admin()) {
+    $interbreadcrumb[] = [
+        'url' => 'list.php',
+        'name' => $plugin->get_lang('AvailableCoursesConfiguration'),
+    ];
+    $interbreadcrumb[] = [
+        'url' => 'paymentsetup.php',
+        'name' => $plugin->get_lang('PaymentsConfiguration'),
+    ];
+} else {
+    $interbreadcrumb[] = [
+        'url' => 'course_panel.php',
+        'name' => get_lang('TabsDashboard'),
+    ];
+}
+
+$htmlHeadXtra[] = api_get_css(api_get_path(WEB_PLUGIN_PATH).'buycourses/resources/css/style.css');
+
+$templateName = $plugin->get_lang('CourseListOnSale');
+$tpl = new Template($templateName);
+$tpl->assign('search_filter_form', $form->returnForm());
+$tpl->assign('showing_courses', true);
+$tpl->assign('courses', $courseList);
+$tpl->assign('sessions_are_included', $includeSessions);
+$tpl->assign('services_are_included', $includeServices);
+$tpl->assign('pagination', $pagination);
+
+$countSessions = $plugin->getCatalogSessionList($first, $pageSize, $nameFilter, $minFilter, $maxFilter, 'count');
+
+$tpl->assign('coursesExist', true);
+$tpl->assign('sessionExist', $countSessions > 0);
+
+$content = $tpl->fetch('buycourses/view/catalog.tpl');
+
+$tpl->assign('header', $templateName);
+$tpl->assign('content', $content);
+$tpl->display_one_col_template();

plugin/buycourses/src/course_panel.php

@@ -0,0 +1,67 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * User Panel.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+$plugin = BuyCoursesPlugin::create();
+$includeSessions = $plugin->get('include_sessions') === 'true';
+$includeServices = $plugin->get('include_services') === 'true';
+
+$userInfo = api_get_user_info();
+
+$productTypes = $plugin->getProductTypes();
+$saleStatuses = $plugin->getSaleStatuses();
+$paymentTypes = $plugin->getPaymentTypes();
+
+$sales = $plugin->getSaleListByUserId($userInfo['id']);
+
+$saleList = [];
+
+foreach ($sales as $sale) {
+    if ($sale['product_type'] == 1) {
+        $saleList[] = [
+            'id' => $sale['id'],
+            'reference' => $sale['reference'],
+            'date' => api_format_date($sale['date'], DATE_TIME_FORMAT_LONG_24H),
+            'currency' => $sale['iso_code'],
+            'price' => $sale['price'],
+            'product_name' => $sale['product_name'],
+            'product_type' => $productTypes[$sale['product_type']],
+            'payment_type' => $paymentTypes[$sale['payment_type']],
+        ];
+    }
+}
+
+$toolbar = Display::toolbarButton(
+    $plugin->get_lang('CourseListOnSale'),
+    'course_catalog.php',
+    'search-plus',
+    'primary',
+    ['title' => $plugin->get_lang('CourseListOnSale')]
+);
+
+$htmlHeadXtra[] = api_get_css(api_get_path(WEB_PLUGIN_PATH).'buycourses/resources/css/style.css');
+
+$templateName = get_lang('TabsDashboard');
+$tpl = new Template($templateName);
+$tpl->assign('showing_courses', true);
+$tpl->assign('sessions_are_included', $includeSessions);
+$tpl->assign('services_are_included', $includeServices);
+$tpl->assign('sale_list', $saleList);
+
+$content = $tpl->fetch('buycourses/view/course_panel.tpl');
+
+$tpl->assign(
+    'actions',
+    Display::toolbarAction('toolbar', [$toolbar])
+);
+$tpl->assign('header', $templateName);
+$tpl->assign('content', $content);
+$tpl->display_one_col_template();

plugin/buycourses/src/error.php

@@ -0,0 +1,14 @@
+<?php
+/* For license terms, see /license.txt */
+/**
+ * Errors management for the Buy Courses plugin - Redirects to course_catalog.php.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+/**
+ * Config.
+ */
+unset($_SESSION['bc_sale_id']);
+
+header('Location: course_catalog.php');
+exit;

plugin/buycourses/src/export_report.php

@@ -0,0 +1,63 @@
+<?php
+/* For license terms, see /license.txt */
+//Initialization
+$cidReset = true;
+
+require_once '../config.php';
+
+api_protect_admin_script();
+
+$plugin = BuyCoursesPlugin::create();
+$form = new FormValidator('export_validate');
+
+$form->addDatePicker('date_start', get_lang('DateStart'), false);
+$form->addDatePicker('date_end', get_lang('DateEnd'), false);
+$form->addButton('export_sales', get_lang('ExportExcel'), 'check', 'primary');
+$salesStatus = [];
+
+if ($form->validate()) {
+    $reportValues = $form->getSubmitValues();
+
+    $dateStart = $reportValues['date_start'];
+    $dateEnd = $reportValues['date_end'];
+
+    if ($dateStart == null || $dateEnd == null) {
+        Display::addFlash(
+            Display::return_message($plugin->get_lang('SelectDateRange'), 'error', false)
+        );
+    } elseif ($dateStart > $dateEnd) {
+        Display::addFlash(
+            Display::return_message(get_lang('EndDateCannotBeBeforeTheStartDate'), 'error', false)
+        );
+    } else {
+        $salesStatus = $plugin->getSaleListReport($dateStart, $dateEnd);
+    }
+}
+
+if (!empty($salesStatus)) {
+    $archiveFile = 'export_report_sales_'.api_get_local_time();
+    Export::arrayToXls($salesStatus, $archiveFile);
+}
+$interbreadcrumb[] = [
+    'url' => '../index.php', 'name' => $plugin->get_lang('plugin_title'),
+];
+$interbreadcrumb[] = [
+    'url' => api_get_path(WEB_PLUGIN_PATH).'buycourses/src/sales_report.php',
+    'name' => $plugin->get_lang('SalesReport'),
+];
+
+$templateName = $plugin->get_lang('ExportReport');
+$toolbar = Display::url(
+    Display::return_icon('back.png', get_lang('GoBack'), [], ICON_SIZE_MEDIUM),
+    api_get_path(WEB_PLUGIN_PATH).'buycourses/src/sales_report.php'
+);
+$template = new Template($templateName);
+$template->assign(
+    'actions',
+    Display::toolbarAction('toolbar', [$toolbar])
+);
+$template->assign('form', $form->returnForm());
+$content = $template->fetch('buycourses/view/export_report.tpl');
+$template->assign('header', $templateName);
+$template->assign('content', $content);
+$template->display_one_col_template();

plugin/buycourses/src/export_subscription_report.php

@@ -0,0 +1,63 @@
+<?php
+/* For license terms, see /license.txt */
+//Initialization
+$cidReset = true;
+
+require_once '../config.php';
+
+api_protect_admin_script();
+
+$plugin = BuyCoursesPlugin::create();
+$form = new FormValidator('export_validate');
+
+$form->addDatePicker('date_start', get_lang('DateStart'), false);
+$form->addDatePicker('date_end', get_lang('DateEnd'), false);
+$form->addButton('export_sales', get_lang('ExportExcel'), 'check', 'primary');
+$salesStatus = [];
+
+if ($form->validate()) {
+    $reportValues = $form->getSubmitValues();
+
+    $dateStart = $reportValues['date_start'];
+    $dateEnd = $reportValues['date_end'];
+
+    if ($dateStart == null || $dateEnd == null) {
+        Display::addFlash(
+            Display::return_message($plugin->get_lang('SelectDateRange'), 'error', false)
+        );
+    } elseif ($dateStart > $dateEnd) {
+        Display::addFlash(
+            Display::return_message(get_lang('EndDateCannotBeBeforeTheStartDate'), 'error', false)
+        );
+    } else {
+        $salesStatus = $plugin->getSubscriptionSaleListReport($dateStart, $dateEnd);
+    }
+}
+
+if (!empty($salesStatus)) {
+    $archiveFile = 'export_report_sales_'.api_get_local_time();
+    Export::arrayToXls($salesStatus, $archiveFile);
+}
+$interbreadcrumb[] = [
+    'url' => '../index.php', 'name' => $plugin->get_lang('plugin_title'),
+];
+$interbreadcrumb[] = [
+    'url' => api_get_path(WEB_PLUGIN_PATH).'buycourses/src/subscription_sales_report.php',
+    'name' => $plugin->get_lang('SubscriptionSalesReport'),
+];
+
+$templateName = $plugin->get_lang('ExportReport');
+$toolbar = Display::url(
+    Display::return_icon('back.png', get_lang('GoBack'), [], ICON_SIZE_MEDIUM),
+    api_get_path(WEB_PLUGIN_PATH).'buycourses/src/subscription_sales_report.php'
+);
+$template = new Template($templateName);
+$template->assign(
+    'actions',
+    Display::toolbarAction('toolbar', [$toolbar])
+);
+$template->assign('form', $form->returnForm());
+$content = $template->fetch('buycourses/view/export_report.tpl');
+$template->assign('header', $templateName);
+$template->assign('content', $content);
+$template->display_one_col_template();

plugin/buycourses/src/expresscheckout.php

@@ -0,0 +1,47 @@
+<?php
+/* For license terms, see /license.txt */
+/**
+ * PayPal Express Checkout Module.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+/**
+ * Init.
+ */
+require_once 'paypalfunctions.php';
+/**
+ * The paymentAmount is the total value of
+ * the shopping cart, that was set
+ * earlier in a session variable
+ * by the shopping cart page.
+ */
+$paymentAmount = $_SESSION["Payment_Amount"];
+
+/**
+ * The currencyCodeType and paymentType
+ * are set to the selections made on the Integration Assistant.
+ */
+$paymentType = "Sale";
+
+/**
+ * Calls the SetExpressCheckout API call
+ * The CallShortcutExpressCheckout function is defined in the file PayPalFunctions.php,
+ * it is included at the top of this file.
+ */
+$resArray = CallShortcutExpressCheckout($paymentAmount, $currencyCodeType, $paymentType, $returnURL, $cancelURL);
+$ack = strtoupper($resArray["ACK"]);
+if ($ack == "SUCCESS" || $ack == "SUCCESSWITHWARNING") {
+    RedirectToPayPal($resArray["TOKEN"]);
+} else {
+    //Display a user friendly Error on the page using any of the following error information returned by PayPal
+    $ErrorCode = urldecode($resArray["L_ERRORCODE0"]);
+    $ErrorShortMsg = urldecode($resArray["L_SHORTMESSAGE0"]);
+    $ErrorLongMsg = urldecode($resArray["L_LONGMESSAGE0"]);
+    $ErrorSeverityCode = urldecode($resArray["L_SEVERITYCODE0"]);
+
+    echo "SetExpressCheckout API call failed. ";
+    echo "Detailed Error Message: ".$ErrorLongMsg;
+    echo "Short Error Message: ".$ErrorShortMsg;
+    echo "Error Code: ".$ErrorCode;
+    echo "Error Severity Code: ".$ErrorSeverityCode;
+}

plugin/buycourses/src/index.buycourses.php

@@ -0,0 +1,48 @@
+<?php
+
+/* For license terms, see /license.txt */
+
+/**
+ * Index of the Buy Courses plugin courses list.
+ */
+$plugin = BuyCoursesPlugin::create();
+$allow = $plugin->get('unregistered_users_enable');
+
+$userIsAdmin = api_is_platform_admin();
+
+if (($allow === 'true' && api_is_anonymous()) || !api_is_anonymous()) {
+    $webPluginPath = api_get_path(WEB_PLUGIN_PATH).'buycourses/';
+
+    $countCourses = $plugin->getCatalogCourseList(
+        0,
+        BuyCoursesPlugin::PAGINATION_PAGE_SIZE,
+        null,
+        0,
+        0,
+        'count'
+    );
+
+    if ($countCourses > 0 && !$userIsAdmin) {
+        api_location($webPluginPath.'src/course_catalog.php');
+    }
+
+    $countSessions = $plugin->getCatalogSessionList(
+        0,
+        BuyCoursesPlugin::PAGINATION_PAGE_SIZE,
+        null,
+        0,
+        0,
+        'count'
+    );
+
+    if ($countSessions > 0 && !$userIsAdmin) {
+        api_location($webPluginPath.'src/session_catalog.php');
+    }
+
+    $htmlHeadXtra[] = api_get_css(api_get_path(WEB_PLUGIN_PATH).'buycourses/resources/css/style.css');
+
+    $tpl = new Template();
+    $content = $tpl->fetch('buycourses/view/index.tpl');
+    $tpl->assign('content', $content);
+    $tpl->display_one_col_template(false);
+}

plugin/buycourses/src/index.php

@@ -0,0 +1 @@
+<?php

plugin/buycourses/src/invoice.php

@@ -0,0 +1,155 @@
+<?php
+/* For license terms, see /license.txt */
+
+use Chamilo\CoreBundle\Component\Utils\ChamiloApi;
+
+/**
+ * Print invoice of the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once '../config.php';
+
+api_protect_admin_script();
+
+$plugin = BuyCoursesPlugin::create();
+
+$invoicingEnable = $plugin->get('invoicing_enable') === 'true';
+if (!$invoicingEnable) {
+    api_not_allowed(true, $plugin->get_lang('NoInvoiceEnable'));
+}
+
+$saleId = isset($_GET['invoice']) ? (int) $_GET['invoice'] : 0;
+$isService = isset($_GET['is_service']) ? (int) $_GET['is_service'] : 0;
+
+$globalParameters = $plugin->getGlobalParameters();
+$infoSale = $plugin->getDataSaleInvoice($saleId, $isService);
+$buyer = api_get_user_info($infoSale['user_id']);
+$extraUserInfoData = UserManager::get_extra_user_data($infoSale['user_id']);
+$infoInvoice = $plugin->getDataInvoice($saleId, $isService);
+
+$taxAppliesTo = $globalParameters['tax_applies_to'];
+$taxEnable = $plugin->get('tax_enable') === 'true' &&
+    ($taxAppliesTo == BuyCoursesPlugin::TAX_APPLIES_TO_ALL ||
+    ($taxAppliesTo == BuyCoursesPlugin::TAX_APPLIES_TO_ONLY_COURSE && !$isService) ||
+    ($taxAppliesTo == BuyCoursesPlugin::TAX_APPLIES_TO_ONLY_SESSION && $isService));
+
+$htmlText = '<html>';
+$htmlText .= '<link rel="stylesheet" type="text/css" href="plugin.css">';
+$htmlText .= '<link rel="stylesheet" type="text/css" href="'.api_get_path(WEB_CSS_PATH).'base.css">';
+$htmlText .= '<body>';
+
+$organization = ChamiloApi::getPlatformLogo('', [], true);
+// Use custom logo image.
+$pdfLogo = api_get_setting('pdf_logo_header');
+if ($pdfLogo === 'true') {
+    $visualTheme = api_get_visual_theme();
+    $img = api_get_path(SYS_CSS_PATH).'themes/'.$visualTheme.'/images/pdf_logo_header.png';
+    if (file_exists($img)) {
+        $organization = "<img src='$img'>";
+    }
+}
+$htmlText .= $organization;
+
+// Seller and customer info
+$htmlText .= '<table width="100%">';
+$htmlText .= '<tr>';
+$htmlText .= '<td>';
+$htmlText .= '<b>'.$globalParameters['seller_name'].'</b><br/>';
+$htmlText .= $globalParameters['seller_id'].'<br/>';
+$htmlText .= $globalParameters['seller_address'].'<br/>';
+$htmlText .= $globalParameters['seller_email'].'<br/>';
+$htmlText .= '</td>';
+$htmlText .= '<td style="text-align:right;">';
+$htmlText .= '<b>'.$buyer['complete_name'].'</b><br/>';
+$htmlText .= ($extraUserInfoData['buycourses_company'] ? $extraUserInfoData['buycourses_company'].'<br>' : '');
+$htmlText .= ($extraUserInfoData['buycourses_vat'] ? $extraUserInfoData['buycourses_vat'].'<br>' : '');
+$htmlText .= ($extraUserInfoData['buycourses_address'] ? $extraUserInfoData['buycourses_address'].'<br/>' : '');
+$htmlText .= ($buyer['phone'] ? $buyer['phone'].'<br/>' : '');
+$htmlText .= ($buyer['email'] ? $buyer['email'].'<br>' : '');
+$htmlText .= '</td>';
+$htmlText .= '</tr>';
+$htmlText .= '</table>';
+
+$htmlText .= '<br><br>';
+$htmlText .= '<p>';
+$htmlText .= $plugin->get_lang('InvoiceDate').': <span style="font-weight:bold;">'
+    .api_convert_and_format_date($infoInvoice['date_invoice'], DATE_TIME_FORMAT_LONG_24H).'</span><br>';
+$htmlText .= $plugin->get_lang('InvoiceNumber').': <span style="font-weight:bold;">'
+    .$infoInvoice['serie'].$infoInvoice['year'].'/'.$infoInvoice['num_invoice'].'</span><br>';
+$htmlText .= '</p><br><br>';
+
+$header = [
+    $plugin->get_lang('OrderReference'),
+    $plugin->get_lang('ProductType'),
+    $plugin->get_lang('Price'),
+];
+
+if ($taxEnable) {
+    $header[] = $globalParameters['tax_name'];
+    $header[] = $plugin->get_lang('Total');
+}
+
+$data = [];
+$row = [
+    $infoSale['reference'],
+    $infoSale['product_name'],
+];
+
+//var_dump($infoSale);exit;
+$isoCode = $plugin->getCurrency($infoSale['currency_id'])['iso_code'];
+
+if ($taxEnable) {
+    $row[] = $plugin->getPriceWithCurrencyFromIsoCode($infoSale['price_without_tax'], $isoCode);
+    $row[] = $plugin->getPriceWithCurrencyFromIsoCode($infoSale['tax_amount'], $isoCode).' ('.(int) $infoSale['tax_perc'].'%)';
+}
+
+$totalPrice = $plugin->getPriceWithCurrencyFromIsoCode(
+    $infoSale['price'],
+    $plugin->getCurrency($infoSale['currency_id'])['iso_code']
+);
+
+$row[] = $totalPrice;
+$data[] = $row;
+
+$totalPrice = $plugin->getPriceWithCurrencyFromIsoCode(
+    $infoSale['price'],
+    $plugin->getCurrency($infoSale['currency_id'])['iso_code']
+);
+
+if ($taxEnable) {
+    $row = [
+        '',
+        '',
+        '',
+        $plugin->get_lang('TotalPayout'),
+        $totalPrice,
+    ];
+} else {
+    $row = [
+        '',
+        $plugin->get_lang('TotalPayout'),
+        $totalPrice,
+    ];
+}
+$data[] = $row;
+$attr = [];
+$attr['class'] = 'table table-hover table-striped data_table';
+$attr['width'] = '100%';
+$htmlText .= Display::table($header, $data, $attr);
+$htmlText .= '</body></html>';
+
+$fileName = $infoInvoice['serie'].$infoInvoice['year'].'-'.$infoInvoice['num_invoice'];
+$fileName = api_replace_dangerous_char($fileName);
+$params = [
+    'filename' => $fileName,
+    'pdf_title' => $plugin->get_lang('Invoice'),
+    'pdf_description' => '',
+    'format' => 'A4',
+    'orientation' => 'P',
+];
+$pdf = new PDF($params['format'], $params['orientation'], $params);
+@$pdf->content_to_pdf($htmlText, '', $fileName, null, 'D', false, null, false, false, false);
+exit;

plugin/buycourses/src/list.php

@@ -0,0 +1,87 @@
+<?php
+/* For license terms, see /license.txt */
+/**
+ * Configuration script for the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+
+use Doctrine\ORM\Tools\Pagination\Paginator;
+
+$cidReset = true;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+$plugin = BuyCoursesPlugin::create();
+$includeSession = $plugin->get('include_sessions') === 'true';
+$includeServices = $plugin->get('include_services') === 'true';
+$taxEnable = $plugin->get('tax_enable') === 'true';
+
+api_protect_admin_script(true);
+
+Display::addFlash(
+    Display::return_message(
+        get_lang('Info').' - '.$plugin->get_lang('CoursesInSessionsDoesntDisplayHere'),
+        'info'
+    )
+);
+
+$pageSize = BuyCoursesPlugin::PAGINATION_PAGE_SIZE;
+$type = isset($_GET['type']) ? (int) $_GET['type'] : BuyCoursesPlugin::PRODUCT_TYPE_COURSE;
+$currentPage = isset($_GET['page']) ? (int) $_GET['page'] : 1;
+$first = $pageSize * ($currentPage - 1);
+
+$qb = $plugin->getCourseList($first, $pageSize);
+$query = $qb->getQuery();
+$courses = new Paginator($query, $fetchJoinCollection = true);
+foreach ($courses as $course) {
+    $item = $plugin->getItemByProduct($course->getId(), BuyCoursesPlugin::PRODUCT_TYPE_COURSE);
+    $course->buyCourseData = [];
+    if ($item !== false) {
+        $course->buyCourseData = $item;
+    }
+}
+
+$totalItems = count($courses);
+$pagesCount = ceil($totalItems / $pageSize);
+
+$pagination = BuyCoursesPlugin::returnPagination(
+    api_get_self(),
+    $currentPage,
+    $pagesCount,
+    $totalItems,
+    ['type' => $type]
+);
+
+// breadcrumbs
+$interbreadcrumb[] = [
+    'url' => api_get_path(WEB_PLUGIN_PATH).'buycourses/index.php',
+    'name' => $plugin->get_lang('plugin_title'),
+];
+
+$templateName = $plugin->get_lang('AvailableCourses');
+
+$htmlHeadXtra[] = api_get_css(api_get_path(WEB_PLUGIN_PATH).'buycourses/resources/css/style.css');
+
+$tpl = new Template($templateName);
+
+$tpl->assign('product_type_course', BuyCoursesPlugin::PRODUCT_TYPE_COURSE);
+$tpl->assign('product_type_session', BuyCoursesPlugin::PRODUCT_TYPE_SESSION);
+$tpl->assign('courses', $courses);
+$tpl->assign('course_pagination', $pagination);
+$tpl->assign('sessions_are_included', $includeSession);
+$tpl->assign('services_are_included', $includeServices);
+$tpl->assign('tax_enable', $taxEnable);
+
+if ($taxEnable) {
+    $globalParameters = $plugin->getGlobalParameters();
+    $tpl->assign('global_tax_perc', $globalParameters['global_tax_perc']);
+    $tpl->assign('tax_applies_to', $globalParameters['tax_applies_to']);
+    $tpl->assign('tax_name', $globalParameters['tax_name']);
+}
+
+$content = $tpl->fetch('buycourses/view/list.tpl');
+
+$tpl->assign('header', $templateName);
+$tpl->assign('content', $content);
+$tpl->display_one_col_template();

plugin/buycourses/src/list_coupon.php

@@ -0,0 +1,96 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * List of couponsof the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once '../config.php';
+
+api_protect_admin_script();
+
+$plugin = BuyCoursesPlugin::create();
+
+if (isset($_GET['coupon_id'])) {
+    $coupon = $plugin->getCouponInfo($_GET['coupon_id']);
+
+    if (empty($coupon)) {
+        api_not_allowed(true);
+    }
+
+    $urlToRedirect = api_get_self().'?';
+
+    switch ($_GET['action']) {
+        case 'deactivate':
+            //activate coupon
+            break;
+        case 'activate':
+            //deactivate coupon
+            break;
+    }
+
+    header("Location: $urlToRedirect");
+    exit;
+}
+
+$discountTypes = $plugin->getCouponDiscountTypes();
+$couponStatuses = $plugin->getCouponStatuses();
+
+$selectedFilterType = '0';
+$selectedStatus = isset($_GET['status']) ? $_GET['status'] : BuyCoursesPlugin::COUPON_STATUS_ACTIVE;
+
+$form = new FormValidator('search', 'get');
+
+if ($form->validate()) {
+    $selectedStatus = $form->getSubmitValue('status');
+
+    if ($selectedStatus === false) {
+        $selectedStatus = BuyCoursesPlugin::COUPON_STATUS_ACTIVE;
+    }
+
+    if ($selectedFilterType === false) {
+        $selectedFilterType = '0';
+    }
+}
+
+$form->addHtml('<div id="report-by-status" '.($selectedFilterType !== '0' ? 'style="display:none"' : '').'>');
+$form->addSelect('status', $plugin->get_lang('CouponStatus'), $couponStatuses);
+$form->addHtml('</div>');
+$form->addButtonFilter(get_lang('Search'));
+$form->setDefaults([
+    'filter_type' => $selectedFilterType,
+    'status' => $selectedStatus,
+]);
+
+$coupons = $plugin->getCouponsListByStatus($selectedStatus);
+
+foreach ($coupons as &$coupon) {
+    if ($coupon['discount_type'] == BuyCoursesPlugin::COUPON_DISCOUNT_TYPE_PERCENTAGE) {
+        $coupon['discount_value'] = $coupon['discount_amount']." %";
+    } elseif ($coupon['discount_type'] == BuyCoursesPlugin::COUPON_DISCOUNT_TYPE_AMOUNT) {
+        $coupon['discount_value'] = $plugin->getPriceWithCurrencyFromIsoCode($coupon['discount_amount'], $coupon['iso_code']);
+    }
+    $coupon['discount_type'] = $discountTypes[$coupon['discount_type']];
+}
+
+$interbreadcrumb[] = ['url' => '../index.php', 'name' => $plugin->get_lang('plugin_title')];
+
+$htmlHeadXtra[] = api_get_css(api_get_path(WEB_PLUGIN_PATH).'buycourses/resources/css/style.css');
+
+$templateName = $plugin->get_lang('CouponList');
+$template = new Template($templateName);
+
+$template->assign('form', $form->returnForm());
+$template->assign('selected_status', $selectedStatus);
+$template->assign('coupon_list', $coupons);
+$template->assign('coupon_status_active', BuyCoursesPlugin::COUPON_STATUS_ACTIVE);
+$template->assign('coupon_status_disable', BuyCoursesPlugin::COUPON_STATUS_DISABLE);
+
+$content = $template->fetch('buycourses/view/list_coupon.tpl');
+
+$template->assign('header', $templateName);
+$template->assign('content', $content);
+$template->display_one_col_template();

plugin/buycourses/src/list_service.php

@@ -0,0 +1,71 @@
+<?php
+/* For license terms, see /license.txt */
+/**
+ * Configuration script for the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+$plugin = BuyCoursesPlugin::create();
+$includeSession = $plugin->get('include_sessions') === 'true';
+$includeServices = $plugin->get('include_services') === 'true';
+if (!$includeServices) {
+    api_not_allowed(true);
+}
+
+$taxEnable = $plugin->get('tax_enable') === 'true';
+
+api_protect_admin_script(true);
+
+Display::addFlash(
+    Display::return_message(
+        get_lang('Info').' - '.$plugin->get_lang('CoursesInSessionsDoesntDisplayHere'),
+        'info'
+    )
+);
+
+$pageSize = BuyCoursesPlugin::PAGINATION_PAGE_SIZE;
+$currentPage = isset($_GET['page']) ? (int) $_GET['page'] : 1;
+$first = $pageSize * ($currentPage - 1);
+
+$services = $plugin->getServices($first, $pageSize);
+$totalItems = $plugin->getServices(0, 1000000000, 'count');
+$pagesCount = ceil($totalItems / $pageSize);
+
+$pagination = BuyCoursesPlugin::returnPagination(api_get_self(), $currentPage, $pagesCount, $totalItems);
+
+// breadcrumbs
+$interbreadcrumb[] = [
+    'url' => api_get_path(WEB_PLUGIN_PATH).'buycourses/index.php',
+    'name' => $plugin->get_lang('plugin_title'),
+];
+
+$templateName = $plugin->get_lang('Services');
+
+$htmlHeadXtra[] = api_get_css(api_get_path(WEB_PLUGIN_PATH).'buycourses/resources/css/style.css');
+
+$tpl = new Template($templateName);
+
+$tpl->assign('product_type_course', BuyCoursesPlugin::PRODUCT_TYPE_COURSE);
+$tpl->assign('product_type_session', BuyCoursesPlugin::PRODUCT_TYPE_SESSION);
+$tpl->assign('sessions_are_included', $includeSession);
+$tpl->assign('services_are_included', $includeServices);
+$tpl->assign('tax_enable', $taxEnable);
+$tpl->assign('services', $services);
+$tpl->assign('service_pagination', $pagination);
+
+if ($taxEnable) {
+    $globalParameters = $plugin->getGlobalParameters();
+    $tpl->assign('global_tax_perc', $globalParameters['global_tax_perc']);
+    $tpl->assign('tax_applies_to', $globalParameters['tax_applies_to']);
+    $tpl->assign('tax_name', $globalParameters['tax_name']);
+}
+
+$content = $tpl->fetch('buycourses/view/list.tpl');
+
+$tpl->assign('header', $templateName);
+$tpl->assign('content', $content);
+$tpl->display_one_col_template();

plugin/buycourses/src/list_session.php

@@ -0,0 +1,89 @@
+<?php
+/* For license terms, see /license.txt */
+/**
+ * Configuration script for the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+use Doctrine\ORM\Tools\Pagination\Paginator;
+
+$cidReset = true;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+$plugin = BuyCoursesPlugin::create();
+$includeSession = $plugin->get('include_sessions') === 'true';
+
+if (!$includeSession) {
+    api_not_allowed(true);
+}
+$includeServices = $plugin->get('include_services') === 'true';
+$taxEnable = $plugin->get('tax_enable') === 'true';
+
+api_protect_admin_script(true);
+
+Display::addFlash(
+    Display::return_message(
+        get_lang('Info').' - '.$plugin->get_lang('CoursesInSessionsDoesntDisplayHere'),
+        'info'
+    )
+);
+
+$pageSize = BuyCoursesPlugin::PAGINATION_PAGE_SIZE;
+$currentPage = isset($_GET['page']) ? (int) $_GET['page'] : 1;
+$first = $pageSize * ($currentPage - 1);
+
+// breadcrumbs
+$interbreadcrumb[] = [
+    'url' => api_get_path(WEB_PLUGIN_PATH).'buycourses/index.php',
+    'name' => $plugin->get_lang('plugin_title'),
+];
+
+$htmlHeadXtra[] = api_get_css(api_get_path(WEB_PLUGIN_PATH).'buycourses/resources/css/style.css');
+
+$templateName = $plugin->get_lang('Sessions');
+
+$tpl = new Template($templateName);
+
+$tpl->assign('product_type_course', BuyCoursesPlugin::PRODUCT_TYPE_COURSE);
+$tpl->assign('product_type_session', BuyCoursesPlugin::PRODUCT_TYPE_SESSION);
+$tpl->assign('sessions_are_included', $includeSession);
+$tpl->assign('services_are_included', $includeServices);
+$tpl->assign('tax_enable', $taxEnable);
+
+$query = CoursesAndSessionsCatalog::browseSessions(null, ['start' => $first, 'length' => $pageSize], true);
+$sessions = new Paginator($query, $fetchJoinCollection = true);
+foreach ($sessions as $session) {
+    $item = $plugin->getItemByProduct($session->getId(), BuyCoursesPlugin::PRODUCT_TYPE_SESSION);
+    $session->buyCourseData = [];
+    if ($item !== false) {
+        $session->buyCourseData = $item;
+    }
+}
+
+$totalItems = count($sessions);
+$pagesCount = ceil($totalItems / $pageSize);
+
+$pagination = BuyCoursesPlugin::returnPagination(
+    api_get_self(),
+    $currentPage,
+    $pagesCount,
+    $totalItems,
+    ['type' => BuyCoursesPlugin::PRODUCT_TYPE_SESSION]
+);
+
+$tpl->assign('sessions', $sessions);
+$tpl->assign('session_pagination', $pagination);
+
+if ($taxEnable) {
+    $globalParameters = $plugin->getGlobalParameters();
+    $tpl->assign('global_tax_perc', $globalParameters['global_tax_perc']);
+    $tpl->assign('tax_applies_to', $globalParameters['tax_applies_to']);
+    $tpl->assign('tax_name', $globalParameters['tax_name']);
+}
+
+$content = $tpl->fetch('buycourses/view/list.tpl');
+
+$tpl->assign('header', $templateName);
+$tpl->assign('content', $content);
+$tpl->display_one_col_template();

plugin/buycourses/src/panel.ajax.php

@@ -0,0 +1,221 @@
+<?php
+/* For licensing terms, see /license.txt */
+
+/**
+ * Responses to AJAX calls.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+api_protect_admin_script(true);
+
+$plugin = BuyCoursesPlugin::create();
+
+$paypalEnable = $plugin->get('paypal_enable');
+$commissionsEnable = $plugin->get('commissions_enable');
+
+$action = isset($_GET['a']) ? $_GET['a'] : null;
+
+switch ($action) {
+    case 'saleInfo':
+        //$saleId is only used in getSale() and is always filtered there
+        $saleId = isset($_POST['id']) ? $_POST['id'] : '';
+        $sale = $plugin->getSale($saleId);
+        $productType = ($sale['product_type'] == 1) ? get_lang('Course') : get_lang('Session');
+        $paymentType = ($sale['payment_type'] == 1) ? 'Paypal' : $plugin->get_lang('BankTransfer');
+        $productInfo = ($sale['product_type'] == 1)
+            ? api_get_course_info_by_id($sale['product_id'])
+            : api_get_session_info($sale['product_id']);
+        $currency = $plugin->getSelectedCurrency();
+        if ($sale['product_type'] == 1) {
+            $productImage = $productInfo['course_image_large'];
+        } else {
+            $productImage = ($productInfo['image'])
+                ? $productInfo['image']
+                : Template::get_icon_path('session_default.png');
+        }
+
+        $userInfo = api_get_user_info($sale['user_id']);
+
+        $html = '<h2>'.$sale['product_name'].'</h2>';
+        $html .= '<div class="row">';
+        $html .= '<div class="col-sm-6 col-md-6">';
+        $html .= '<ul>';
+        $html .= '<li><b>'.$plugin->get_lang('OrderPrice').':</b> '.$sale['price'].'</li>';
+        $html .= '<li><b>'.$plugin->get_lang('CurrencyType').':</b> '.$currency['iso_code'].'</li>';
+        $html .= '<li><b>'.$plugin->get_lang('ProductType').':</b> '.$productType.'</li>';
+        $html .= '<li><b>'.$plugin->get_lang('OrderDate').':</b> '
+            .api_format_date($sale['date'], DATE_TIME_FORMAT_LONG_24H).'</li>';
+        $html .= '<li><b>'.$plugin->get_lang('Buyer').':</b> '.$userInfo['complete_name'].'</li>';
+        $html .= '<li><b>'.$plugin->get_lang('PaymentMethods').':</b> '.$paymentType.'</li>';
+        $html .= '</ul>';
+        $html .= '</div>';
+        $html .= '<div class="col-sm-6 col-md-6">';
+        $html .= '<img class="thumbnail" src="'.$productImage.'" >';
+        $html .= '</div>';
+        $html .= '</div>';
+        echo $html;
+        break;
+    case 'stats':
+        $stats = [];
+        $stats['completed_count'] = 0;
+        $stats['completed_total_amount'] = 0;
+        $stats['pending_count'] = 0;
+        $stats['pending_total_amount'] = 0;
+        $stats['canceled_count'] = 0;
+        $stats['canceled_total_amount'] = 0;
+
+        $completedPayouts = $plugin->getPayouts(BuyCoursesPlugin::PAYOUT_STATUS_COMPLETED);
+        $pendingPayouts = $plugin->getPayouts(BuyCoursesPlugin::PAYOUT_STATUS_PENDING);
+        $canceledPayouts = $plugin->getPayouts(BuyCoursesPlugin::PAYOUT_STATUS_CANCELED);
+        $currency = $plugin->getSelectedCurrency();
+
+        foreach ($completedPayouts as $completed) {
+            $stats['completed_count'] = count($completedPayouts);
+            $stats['completed_total_amount'] += $completed['commission'];
+            $stats['completed_total_amount'] = number_format($stats['completed_total_amount'], 2);
+        }
+
+        foreach ($pendingPayouts as $pending) {
+            $stats['pending_count'] = count($pendingPayouts);
+            $stats['pending_total_amount'] += $pending['commission'];
+            $stats['pending_total_amount'] = number_format($stats['pending_total_amount'], 2);
+        }
+
+        foreach ($canceledPayouts as $canceled) {
+            $stats['canceled_count'] = count($canceledPayouts);
+            $stats['canceled_total_amount'] += $canceled['commission'];
+            $stats['canceled_total_amount'] = number_format($stats['canceled_total_amount'], 2);
+        }
+
+        $html = '
+            <div class="row">
+                <p>
+                    <ul>
+                        <li>
+                            '.get_plugin_lang("PayoutsTotalCompleted", "BuyCoursesPlugin").'
+                            <b>'.$stats['completed_count'].'</b> - '.get_plugin_lang("TotalAmount", "BuyCoursesPlugin").'
+                            <b>'.$stats['completed_total_amount'].' '.$currency['iso_code'].'</b>
+                        </li>
+                        <li>'.get_plugin_lang("PayoutsTotalPending", "BuyCoursesPlugin").'
+                            <b>'.$stats['pending_count'].'</b> - '.get_plugin_lang("TotalAmount", "BuyCoursesPlugin").'
+                            <b>'.$stats['pending_total_amount'].' '.$currency['iso_code'].'</b>
+                        </li>
+                        <li>'.get_plugin_lang("PayoutsTotalCanceled", "BuyCoursesPlugin").'
+                            <b>'.$stats['canceled_count'].'</b> - '.get_plugin_lang("TotalAmount", "BuyCoursesPlugin").'
+                            <b>'.$stats['canceled_total_amount'].' '.$currency['iso_code'].'</b>
+                        </li>
+                    </ul>
+                </p>
+            </div>
+        ';
+        echo $html;
+        break;
+    case 'processPayout':
+        if (api_is_anonymous()) {
+            break;
+        }
+
+        $html = '';
+        $allPays = [];
+        $totalAccounts = 0;
+        $totalPayout = 0;
+        $payouts = isset($_POST['payouts']) ? $_POST['payouts'] : '';
+
+        if (!$payouts) {
+            echo Display::return_message(get_plugin_lang("SelectOptionToProceed", "BuyCoursesPlugin"), 'error', false);
+
+            break;
+        }
+
+        foreach ($payouts as $index => $id) {
+            $allPays[] = $plugin->getPayouts(BuyCoursesPlugin::PAYOUT_STATUS_PENDING, $id);
+        }
+
+        foreach ($allPays as $payout) {
+            $totalPayout += number_format($payout['commission'], 2);
+            $totalAccounts++;
+        }
+
+        $currentCurrency = $plugin->getSelectedCurrency();
+
+        $isoCode = $currentCurrency['iso_code'];
+
+        $html .= '<p>'.get_plugin_lang("VerifyTotalAmountToProceedPayout", "BuyCoursesPlugin").'</p>';
+        $html .= '
+            <p>
+                <ul>
+                    <li>'.get_plugin_lang("TotalAcounts", "BuyCoursesPlugin").' <b>'.$totalAccounts.'</b></li>
+                    <li>'.get_plugin_lang("TotalPayout", "BuyCoursesPlugin").' <b>'.$isoCode.' '.$totalPayout.'</b></li>
+                </ul>
+            </p>
+            <p>'.get_plugin_lang("CautionThisProcessCantBeCanceled", "BuyCoursesPlugin").'</p>
+            <br /><br />
+            <div id="spinner" class="text-center"></div>
+        ';
+
+        echo $html;
+        break;
+
+    case 'proceedPayout':
+        if (api_is_anonymous()) {
+            break;
+        }
+
+        $paypalParams = $plugin->getPaypalParams();
+        $pruebas = $paypalParams['sandbox'] == 1;
+        $paypalUsername = $paypalParams['username'];
+        $paypalPassword = $paypalParams['password'];
+        $paypalSignature = $paypalParams['signature'];
+        require_once "paypalfunctions.php";
+        $allPayouts = [];
+        $totalAccounts = 0;
+        $totalPayout = 0;
+
+        $payouts = isset($_POST['payouts']) ? $_POST['payouts'] : '';
+
+        if (!$payouts) {
+            echo Display::return_message(get_plugin_lang("SelectOptionToProceed", "BuyCoursesPlugin"), 'error', false);
+
+            break;
+        }
+
+        foreach ($payouts as $index => $id) {
+            $allPayouts[] = $plugin->getPayouts(BuyCoursesPlugin::PAYOUT_STATUS_PENDING, $id);
+        }
+
+        $currentCurrency = $plugin->getSelectedCurrency();
+
+        $isoCode = $currentCurrency['iso_code'];
+
+        $result = MassPayment($allPayouts, $isoCode);
+
+        if ($result['ACK'] === 'Success') {
+            foreach ($allPayouts as $payout) {
+                $plugin->setStatusPayouts($payout['id'], BuyCoursesPlugin::PAYOUT_STATUS_COMPLETED);
+            }
+            echo Display::return_message(get_plugin_lang("PayoutSuccess", "BuyCoursesPlugin"), 'success', false);
+        } else {
+            echo Display::return_message(
+                '<b>'.$result['L_SEVERITYCODE0'].' '.$result['L_ERRORCODE0'].'</b> - '
+                    .$result['L_SHORTMESSAGE0'].'<br /><ul><li>'.$result['L_LONGMESSAGE0'].'</li></ul>',
+                'error',
+                false
+            );
+        }
+        break;
+
+    case 'cancelPayout':
+        if (api_is_anonymous()) {
+            break;
+        }
+
+        $payoutId = isset($_POST['id']) ? $_POST['id'] : '';
+        $plugin->setStatusPayouts($payoutId, BuyCoursesPlugin::PAYOUT_STATUS_CANCELED);
+        echo '';
+        break;
+}
+exit;

plugin/buycourses/src/paymentsetup.php

@@ -0,0 +1,538 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * Configuration page for payment methods for the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+api_protect_admin_script(true);
+
+$plugin = BuyCoursesPlugin::create();
+
+$paypalEnable = $plugin->get('paypal_enable');
+$transferEnable = $plugin->get('transfer_enable');
+$tpvRedsysEnable = $plugin->get('tpv_redsys_enable');
+$commissionsEnable = $plugin->get('commissions_enable');
+$culqiEnable = $plugin->get('culqi_enable');
+$stripeEnable = $plugin->get('stripe_enable') === 'true';
+$cecabankEnable = $plugin->get('cecabank_enable') === 'true';
+
+if (isset($_GET['action'], $_GET['id'])) {
+    if ($_GET['action'] == 'delete_taccount') {
+        $plugin->deleteTransferAccount($_GET['id']);
+
+        Display::addFlash(
+            Display::return_message(get_lang('ItemRemoved'), 'success')
+        );
+
+        header('Location: '.api_get_self());
+        exit;
+    }
+}
+
+$globalSettingForm = new FormValidator('currency');
+
+if ($globalSettingForm->validate()) {
+    $globalSettingFormValues = $globalSettingForm->getSubmitValues();
+
+    $plugin->saveCurrency($globalSettingFormValues['currency']);
+    unset($globalSettingFormValues['currency']);
+    $plugin->saveGlobalParameters($globalSettingFormValues);
+
+    Display::addFlash(
+        Display::return_message(get_lang('Saved'), 'success')
+    );
+
+    header('Location:'.api_get_self());
+    exit;
+}
+
+$currencies = $plugin->getCurrencies();
+
+$currencySelect = $globalSettingForm->addSelect(
+    'currency',
+    [
+        $plugin->get_lang('CurrencyType'),
+        $plugin->get_lang('InfoCurrency'),
+    ],
+    [get_lang('Select')]
+);
+
+foreach ($currencies as $currency) {
+    $currencyText = implode(
+        ' => ',
+        [
+            $currency['country_name'],
+            $currency['iso_code'],
+        ]
+    );
+    $currencyValue = $currency['id'];
+    $currencySelect->addOption($currencyText, $currencyValue);
+
+    if ($currency['status']) {
+        $currencySelect->setSelected($currencyValue);
+    }
+}
+
+$globalSettingForm->addTextarea(
+    'terms_and_conditions',
+    [
+        get_lang('TermsAndConditions'),
+        $plugin->get_lang('WriteHereTheTermsAndConditionsOfYourECommerce'),
+    ]
+);
+
+$globalSettingForm->addElement(
+    'text',
+    'sale_email',
+    $plugin->get_lang('SaleEmail')
+);
+
+$taxEnable = $plugin->get('tax_enable') === 'true';
+$invoicingEnable = $plugin->get('invoicing_enable') === 'true';
+
+if ($taxEnable) {
+    $globalSettingForm->addHtml('<hr/>');
+
+    $globalSettingForm->addElement(
+        'number',
+        'global_tax_perc',
+        [$plugin->get_lang('GlobalTaxPerc'), $plugin->get_lang('GlobalTaxPercDescription'), '%'],
+        ['step' => 1]
+    );
+
+    $taxAppliesTo = $plugin->getTaxAppliesTo();
+
+    $taxTypeSelect = $globalSettingForm->addSelect(
+        'tax_applies_to',
+        $plugin->get_lang('TaxAppliesTo'),
+        [get_lang('Select')]
+    );
+
+    foreach ($taxAppliesTo as $key => $value) {
+        $optionText = $value;
+        $optionyValue = $key;
+
+        $taxTypeSelect->addOption($optionText, $optionyValue);
+    }
+
+    $globalSettingForm->addElement(
+        'text',
+        'tax_name',
+        $plugin->get_lang('TaxNameCustom'),
+        ['placeholder' => $plugin->get_lang('TaxNameExamples')]
+    );
+}
+
+if ($invoicingEnable) {
+    $globalSettingForm->addHtml('<hr/>');
+
+    $globalSettingForm->addElement(
+        'text',
+        'seller_name',
+        $plugin->get_lang('SellerName')
+    );
+
+    $globalSettingForm->addElement(
+        'text',
+        'seller_id',
+        $plugin->get_lang('SellerId')
+    );
+
+    $globalSettingForm->addElement(
+        'text',
+        'seller_address',
+        $plugin->get_lang('SellerAddress')
+    );
+
+    $globalSettingForm->addElement(
+        'text',
+        'seller_email',
+        $plugin->get_lang('SellerEmail')
+    );
+
+    $globalSettingForm->addElement(
+        'number',
+        'next_number_invoice',
+        [$plugin->get_lang('NextNumberInvoice'), $plugin->get_lang('NextNumberInvoiceDescription')],
+        ['step' => 1]
+    );
+
+    $globalSettingForm->addElement(
+        'text',
+        'invoice_series',
+        [$plugin->get_lang('InvoiceSeries'), $plugin->get_lang('InvoiceSeriesDescription')]
+    );
+}
+
+$globalSettingForm->addButtonSave(get_lang('Save'));
+$globalSettingForm->setDefaults($plugin->getGlobalParameters());
+
+$termsAndConditionsForm = new FormValidator('termsconditions');
+
+$paypalForm = new FormValidator('paypal');
+
+if ($paypalForm->validate()) {
+    $paypalFormValues = $paypalForm->getSubmitValues();
+
+    $plugin->savePaypalParams($paypalFormValues);
+
+    Display::addFlash(
+        Display::return_message(get_lang('Saved'), 'success')
+    );
+
+    header('Location:'.api_get_self());
+    exit;
+}
+
+$paypalForm->addText(
+    'username',
+    $plugin->get_lang('ApiUsername'),
+    false,
+    ['cols-size' => [3, 8, 1]]
+);
+$paypalForm->addText(
+    'password',
+    $plugin->get_lang('ApiPassword'),
+    false,
+    ['cols-size' => [3, 8, 1]]
+);
+$paypalForm->addText(
+    'signature',
+    $plugin->get_lang('ApiSignature'),
+    false,
+    ['cols-size' => [3, 8, 1]]
+);
+$paypalForm->addCheckBox('sandbox', null, $plugin->get_lang('Sandbox'));
+$paypalForm->addButtonSave(get_lang('Save'));
+$paypalForm->setDefaults($plugin->getPaypalParams());
+
+// TPV Redsys
+$htmlTpvRedsys = Display::return_message($plugin->get_lang('NotFindRedsysFile'), 'warning', false);
+if (file_exists(api_get_path(SYS_PLUGIN_PATH).'buycourses/resources/apiRedsys.php')) {
+    $tpvRedsysForm = new FormValidator('tpv_redsys');
+    $tpvRedsysForm->addHtml(
+        Display::return_message($plugin->get_lang('InfoTpvRedsysApiCredentials'), 'info', false)
+    );
+
+    if ($tpvRedsysForm->validate()) {
+        $tpvRedsysFormValues = $tpvRedsysForm->getSubmitValues();
+
+        $plugin->saveTpvRedsysParams($tpvRedsysFormValues);
+
+        Display::addFlash(
+            Display::return_message(get_lang('Saved'), 'success')
+        );
+
+        header('Location:'.api_get_self());
+        exit;
+    }
+
+    $tpvRedsysForm->addText(
+        'merchantcode',
+        [$plugin->get_lang('DS_MERCHANT_MERCHANTCODE'), 'DS_MERCHANT_MERCHANTCODE'],
+        false,
+        ['cols-size' => [3, 8, 1]]
+    );
+    $tpvRedsysForm->addText(
+        'terminal',
+        [$plugin->get_lang('DS_MERCHANT_TERMINAL'), 'DS_MERCHANT_TERMINAL'],
+        false,
+        ['cols-size' => [3, 8, 1]]
+    );
+    $tpvRedsysForm->addText(
+        'currency',
+        [$plugin->get_lang('DS_MERCHANT_CURRENCY'), 'DS_MERCHANT_CURRENCY'],
+        false,
+        ['cols-size' => [3, 8, 1]]
+    );
+    $tpvRedsysForm->addText(
+        'kc',
+        $plugin->get_lang('kc'),
+        false,
+        ['cols-size' => [3, 8, 1]]
+    );
+    $tpvRedsysForm->addText(
+        'url_redsys',
+        $plugin->get_lang('url_redsys'),
+        false,
+        ['cols-size' => [3, 8, 1]]
+    );
+    $tpvRedsysForm->addText(
+        'url_redsys_sandbox',
+        $plugin->get_lang('url_redsys_sandbox'),
+        false,
+        ['cols-size' => [3, 8, 1]]
+    );
+    $tpvRedsysForm->addCheckBox('sandbox', null, $plugin->get_lang('Sandbox'));
+    $tpvRedsysForm->addButtonSave(get_lang('Save'));
+    $tpvRedsysForm->setDefaults($plugin->getTpvRedsysParams());
+
+    $htmlTpvRedsys = $tpvRedsysForm->returnForm();
+}
+
+// Platform Commissions
+
+$commissionForm = new FormValidator('commissions');
+
+if ($commissionForm->validate()) {
+    $commissionFormValues = $commissionForm->getSubmitValues();
+
+    $plugin->updateCommission($commissionFormValues);
+
+    Display::addFlash(
+        Display::return_message(get_lang('Saved'), 'success')
+    );
+
+    header('Location:'.api_get_self());
+    exit;
+}
+
+$commissionForm->addElement(
+    'number',
+    'commission',
+    [$plugin->get_lang('Commission'), null, '%'],
+    ['step' => 1, 'cols-size' => [3, 7, 1], 'min' => 0, 'max' => 100]
+);
+
+$commissionForm->addButtonSave(get_lang('Save'));
+$commissionForm->setDefaults($plugin->getPlatformCommission());
+
+$transferForm = new FormValidator('transfer_account');
+
+if ($transferForm->validate()) {
+    $transferFormValues = $transferForm->getSubmitValues();
+
+    $plugin->saveTransferAccount($transferFormValues);
+
+    Display::addFlash(
+        Display::return_message(get_lang('Saved'), 'success')
+    );
+
+    header('Location:'.api_get_self());
+    exit;
+}
+
+$transferForm->addText(
+    'tname',
+    get_lang('Name'),
+    false,
+    ['cols-size' => [3, 8, 1]]
+);
+$transferForm->addText(
+    'taccount',
+    $plugin->get_lang('BankAccount'),
+    false,
+    ['cols-size' => [3, 8, 1]]
+);
+$transferForm->addText(
+    'tswift',
+    [$plugin->get_lang('SWIFT'), $plugin->get_lang('SWIFT_help')],
+    false,
+    ['cols-size' => [3, 8, 1]]
+);
+$transferForm->addButtonCreate(get_lang('Add'));
+
+$transferAccounts = $plugin->getTransferAccounts();
+
+$transferInfoForm = new FormValidator('transfer_info');
+
+if ($transferInfoForm->validate()) {
+    $transferInfoFormValues = $transferInfoForm->getSubmitValues();
+
+    $plugin->saveTransferInfoEmail($transferInfoFormValues);
+
+    Display::addFlash(
+        Display::return_message(get_lang('Saved'), 'success')
+    );
+
+    header('Location:'.api_get_self());
+    exit;
+}
+$transferInfoForm->addHtmlEditor(
+    'tinfo_email_extra',
+    $plugin->get_lang('InfoEmailExtra'),
+    false,
+    false,
+    ['ToolbarSet' => 'Minimal']
+);
+$transferInfoForm->addButtonCreate(get_lang('Save'));
+$transferInfoForm->setDefaults($plugin->getTransferInfoExtra());
+
+// Culqi main configuration
+
+$culqiForm = new FormValidator('culqi_config');
+
+if ($culqiForm->validate()) {
+    $culqiFormValues = $culqiForm->getSubmitValues();
+
+    $plugin->saveCulqiParameters($culqiFormValues);
+
+    Display::addFlash(
+        Display::return_message(get_lang('Saved'), 'success')
+    );
+
+    header('Location:'.api_get_self());
+    exit;
+}
+
+$culqiForm->addText(
+    'commerce_code',
+    $plugin->get_lang('CommerceCode'),
+    false,
+    ['cols-size' => [3, 8, 1]]
+);
+$culqiForm->addText(
+    'api_key',
+    $plugin->get_lang('ApiPassword'),
+    false,
+    ['cols-size' => [3, 8, 1]]
+);
+$culqiForm->addCheckBox('integration', null, $plugin->get_lang('Sandbox'));
+$culqiForm->addButtonSave(get_lang('Save'));
+$culqiForm->setDefaults($plugin->getCulqiParams());
+
+// Stripe main configuration
+
+$stripeForm = new FormValidator('stripe_config');
+
+if ($stripeForm->validate()) {
+    $stripeFormValues = $stripeForm->getSubmitValues();
+
+    $plugin->saveStripeParameters($stripeFormValues);
+
+    Display::addFlash(
+        Display::return_message(get_lang('Saved'), 'success')
+    );
+
+    header('Location:'.api_get_self());
+    exit;
+}
+
+$stripeForm->addText(
+    'account_id',
+    $plugin->get_lang('StripeAccountId'),
+    false,
+    ['cols-size' => [3, 8, 1]]
+);
+$stripeForm->addText(
+    'secret_key',
+    $plugin->get_lang('StripeSecret'),
+    false,
+    ['cols-size' => [3, 8, 1]]
+);
+$stripeForm->addText(
+    'endpoint_secret',
+    $plugin->get_lang('StripeEndpointSecret'),
+    false,
+    ['cols-size' => [3, 8, 1]]
+);
+$stripeForm->addButtonSave(get_lang('Save'));
+$stripeForm->setDefaults($plugin->getStripeParams());
+
+// Cecabank main configuration
+
+$cecabankForm = new FormValidator('cecabank_config');
+
+if ($cecabankForm->validate()) {
+    $cecabankFormValues = $cecabankForm->getSubmitValues();
+
+    $plugin->saveCecabankParameters($cecabankFormValues);
+
+    Display::addFlash(
+        Display::return_message(get_lang('Saved'), 'success')
+    );
+
+    header('Location:'.api_get_self());
+    exit;
+}
+
+$cecabankForm->addText(
+    'crypto_key',
+    $plugin->get_lang('CecaSecret'),
+    false,
+    ['cols-size' => [3, 8, 1]]
+);
+$cecabankForm->addText(
+    'url',
+    $plugin->get_lang('CecaUrl'),
+    false,
+    ['cols-size' => [3, 8, 1]]
+);
+$cecabankForm->addText(
+    'merchant_id',
+    $plugin->get_lang('CecaMerchanId'),
+    false,
+    ['cols-size' => [3, 8, 1]]
+);
+$cecabankForm->addText(
+    'acquirer_bin',
+    $plugin->get_lang('CecaAcquirerId'),
+    false,
+    ['cols-size' => [3, 8, 1]]
+);
+$cecabankForm->addText(
+    'terminal_id',
+    $plugin->get_lang('CecaTerminalId'),
+    false,
+    ['cols-size' => [3, 8, 1]]
+);
+$cecabankForm->addText(
+    'cypher',
+    $plugin->get_lang('CecaCypher'),
+    false,
+    ['cols-size' => [3, 8, 1]]
+);
+$cecabankForm->addText(
+    'exponent',
+    $plugin->get_lang('CecaExponent'),
+    false,
+    ['cols-size' => [3, 8, 1]]
+);
+$cecabankForm->addText(
+    'supported_payment',
+    $plugin->get_lang('CecaSupportedPayment'),
+    false,
+    ['cols-size' => [3, 8, 1]]
+);
+$cecabankForm->addButtonSave(get_lang('Save'));
+$cecabankForm->setDefaults($plugin->getCecabankParams());
+
+// breadcrumbs
+$interbreadcrumb[] = [
+    'url' => api_get_path(WEB_PLUGIN_PATH).'buycourses/index.php',
+    'name' => $plugin->get_lang('plugin_title'),
+];
+
+$htmlHeadXtra[] = api_get_css(api_get_path(WEB_PLUGIN_PATH).'buycourses/resources/css/style.css');
+
+$templateName = $plugin->get_lang('PaymentsConfiguration');
+$tpl = new Template($templateName);
+$tpl->assign('header', $templateName);
+$tpl->assign('global_config_form', $globalSettingForm->returnForm());
+$tpl->assign('paypal_form', $paypalForm->returnForm());
+$tpl->assign('commission_form', $commissionForm->returnForm());
+$tpl->assign('transfer_form', $transferForm->returnForm());
+$tpl->assign('transfer_info_form', $transferInfoForm->returnForm());
+$tpl->assign('culqi_form', $culqiForm->returnForm());
+$tpl->assign('transfer_accounts', $transferAccounts);
+$tpl->assign('paypal_enable', $paypalEnable);
+$tpl->assign('commissions_enable', $commissionsEnable);
+$tpl->assign('transfer_enable', $transferEnable);
+$tpl->assign('culqi_enable', $culqiEnable);
+$tpl->assign('tpv_redsys_enable', $tpvRedsysEnable);
+$tpl->assign('tpv_redsys_form', $htmlTpvRedsys);
+$tpl->assign('stripe_enable', $stripeEnable);
+$tpl->assign('stripe_form', $stripeForm->returnForm());
+$tpl->assign('cecabank_enable', $cecabankEnable);
+$tpl->assign('cecabank_form', $cecabankForm->returnForm());
+
+$content = $tpl->fetch('buycourses/view/paymentsetup.tpl');
+
+$tpl->assign('content', $content);
+$tpl->display_one_col_template();

plugin/buycourses/src/payout_panel.php

@@ -0,0 +1,65 @@
+<?php
+/**
+ * User Panel.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+/**
+ * Initialization.
+ */
+$cidReset = true;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+$plugin = BuyCoursesPlugin::create();
+$includeSessions = $plugin->get('include_sessions') === 'true';
+
+$userInfo = api_get_user_info();
+
+$payouts = $plugin->getPayouts(BuyCoursesPlugin::PAYOUT_STATUS_COMPLETED, 0, $userInfo['id']);
+
+$payoutList = [];
+
+foreach ($payouts as $payout) {
+    $payoutList[] = [
+        'id' => $payout['id'],
+        'sale_id' => $payout['sale_id'],
+        'reference' => $payout['sale_reference'],
+        'date' => api_format_date($payout['date'], DATE_TIME_FORMAT_LONG_24H),
+        'payout_date' => ($payout['payout_date'] === '0000-00-00 00:00:00')
+            ? '-'
+            : api_format_date($payout['payout_date'], DATE_TIME_FORMAT_LONG_24H),
+        'currency' => $payout['iso_code'],
+        'price' => $payout['item_price'],
+        'commission' => $payout['commission'],
+        'paypal_account' => $payout['paypal_account'],
+        'status' => $payout['status'],
+    ];
+}
+
+$toolbar = Display::toolbarButton(
+    $plugin->get_lang('CourseListOnSale'),
+    'course_catalog.php',
+    'search-plus',
+    'primary',
+    ['title' => $plugin->get_lang('CourseListOnSale')]
+);
+
+$templateName = get_lang('TabsDashboard');
+
+$htmlHeadXtra[] = api_get_css(api_get_path(WEB_PLUGIN_PATH).'buycourses/resources/css/style.css');
+
+$tpl = new Template($templateName);
+$tpl->assign('showing_courses', true);
+$tpl->assign('sessions_are_included', $includeSessions);
+$tpl->assign('payout_list', $payoutList);
+
+$content = $tpl->fetch('buycourses/view/payout_panel.tpl');
+
+$tpl->assign(
+    'actions',
+    Display::toolbarAction('toolbar', [$toolbar])
+);
+$tpl->assign('header', $templateName);
+$tpl->assign('content', $content);
+$tpl->display_one_col_template();

plugin/buycourses/src/payout_report.php

@@ -0,0 +1,94 @@
+<?php
+
+/* For license terms, see /license.txt */
+/**
+ * List of pending payments of the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+//Initialization
+$cidReset = true;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+$htmlHeadXtra[] = api_get_css(api_get_path(WEB_PLUGIN_PATH).'buycourses/resources/css/style.css');
+$htmlHeadXtra[] =
+    '<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/1.0.2/Chart.min.js"></script>';
+
+api_protect_admin_script(true);
+
+$plugin = BuyCoursesPlugin::create();
+
+$commissionsEnable = $plugin->get('commissions_enable');
+$payoutStatuses = $plugin->getPayoutStatuses();
+$selectedStatus = isset($_GET['status']) ? $_GET['status'] : BuyCoursesPlugin::SALE_STATUS_COMPLETED;
+
+if ($commissionsEnable !== "true") {
+    api_not_allowed(true);
+}
+
+$form = new FormValidator('search', 'get');
+
+if ($form->validate()) {
+    $selectedStatus = $form->getSubmitValue('status');
+
+    if ($selectedStatus === false) {
+        $selectedStatus = BuyCoursesPlugin::PAYOUT_STATUS_PENDING;
+    }
+}
+
+$form->addSelect('status', $plugin->get_lang('PayoutStatus'), $payoutStatuses);
+$form->addButtonFilter(get_lang('Search'));
+$form->setDefaults([
+    'status' => $selectedStatus,
+]);
+
+switch ($selectedStatus) {
+    case '2':
+        $payouts = $plugin->getPayouts($selectedStatus);
+
+        break;
+    case '1':
+        $payouts = $plugin->getPayouts($selectedStatus);
+
+        break;
+    case '0':
+    default:
+        $payouts = $plugin->getPayouts();
+
+        break;
+}
+
+$payoutList = [];
+
+foreach ($payouts as $payout) {
+    $payoutList[] = [
+        'id' => $payout['id'],
+        'sale_id' => $payout['sale_id'],
+        'reference' => $payout['sale_reference'],
+        'date' => api_format_date($payout['date'], DATE_TIME_FORMAT_LONG_24H),
+        'payout_date' => ($payout['payout_date'] === '0000-00-00 00:00:00')
+            ? '-'
+            : api_format_date($payout['payout_date'], DATE_TIME_FORMAT_LONG_24H),
+        'currency' => $payout['iso_code'],
+        'price' => $payout['item_price'],
+        'commission' => $payout['commission'],
+        'beneficiary' => api_get_person_name($payout['firstname'], $payout['lastname']),
+        'paypal_account' => $payout['paypal_account'],
+        'status' => $payout['status'],
+    ];
+}
+
+$templateName = $plugin->get_lang('PayoutReport');
+
+$template = new Template($templateName);
+
+$template->assign('form', $form->returnForm());
+$template->assign('payout_list', $payoutList);
+$template->assign('selected_status', $selectedStatus);
+
+$content = $template->fetch('buycourses/view/payout_report.tpl');
+
+$template->assign('header', $templateName);
+$template->assign('content', $content);
+$template->display_one_col_template();

plugin/buycourses/src/paypal_payout.php

@@ -0,0 +1,55 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * List page for Paypal Payout for the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+/**
+ * Initialization.
+ */
+$cidReset = true;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+$htmlHeadXtra[] = api_get_css(api_get_path(WEB_PLUGIN_PATH).'buycourses/resources/css/style.css');
+
+api_protect_admin_script(true);
+
+$plugin = BuyCoursesPlugin::create();
+
+$paypalEnable = $plugin->get('paypal_enable');
+$commissionsEnable = $plugin->get('commissions_enable');
+
+if ($paypalEnable !== "true" && $commissionsEnable !== "true") {
+    api_not_allowed(true);
+}
+
+$payouts = $plugin->getPayouts();
+
+$payoutList = [];
+
+foreach ($payouts as $payout) {
+    $payoutList[] = [
+        'id' => $payout['id'],
+        'reference' => $payout['sale_reference'],
+        'date' => api_format_date($payout['date'], DATE_TIME_FORMAT_LONG_24H),
+        'currency' => $payout['iso_code'],
+        'price' => $payout['item_price'],
+        'commission' => $payout['commission'],
+        'paypal_account' => $payout['paypal_account'],
+    ];
+}
+
+$templateName = $plugin->get_lang('PaypalPayoutCommissions');
+
+$template = new Template($templateName);
+
+$template->assign('payout_list', $payoutList);
+
+$content = $template->fetch('buycourses/view/paypal_payout.tpl');
+
+$template->assign('header', $templateName);
+$template->assign('content', $content);
+$template->display_one_col_template();

plugin/buycourses/src/paypalfunctions.php

@@ -0,0 +1,432 @@
+<?php
+/*
+ * PayPal API Module
+ *
+ * Defines all the global variables and the wrapper functions
+ */
+$PROXY_HOST = '127.0.0.1';
+$PROXY_PORT = '808';
+
+$SandboxFlag = $pruebas;
+
+/**
+ * PayPal API Credentials
+ * Replace <API_USERNAME> with your API Username
+ * Replace <API_PASSWORD> with your API Password
+ * Replace <API_SIGNATURE> with your Signature.
+ */
+$API_UserName = $paypalUsername;
+$API_Password = $paypalPassword;
+$API_Signature = $paypalSignature;
+
+// BN Code is only applicable for partners
+$sBNCode = "PP-ECWizard";
+
+/**
+ * Define the PayPal Redirect URLs.
+ * This is the URL that the buyer is first sent to do authorize payment with their paypal account
+ * change the URL depending if you are testing on the sandbox or the live PayPal site.
+ *
+ * For the sandbox, the URL is https://www.sandbox.paypal.com/webscr&cmd=_express-checkout&token=
+ * For the live site, the URL is https://www.paypal.com/webscr&cmd=_express-checkout&token=
+ */
+if ($SandboxFlag == true) {
+    $API_Endpoint = "https://api-3t.sandbox.paypal.com/nvp";
+    $PAYPAL_URL = "https://www.sandbox.paypal.com/webscr?cmd=_express-checkout&token=";
+} else {
+    $API_Endpoint = "https://api-3t.paypal.com/nvp";
+    $PAYPAL_URL = "https://www.paypal.com/cgi-bin/webscr?cmd=_express-checkout&token=";
+}
+
+$USE_PROXY = false;
+$version = "93";
+
+if (session_id() == "") {
+    session_start();
+}
+
+/**
+ * An express checkout transaction starts with a token, that
+ * identifies to PayPal your transaction
+ * In this example, when the script sees a token, the script
+ * knows that the buyer has already authorized payment through
+ * paypal.  If no token was found, the action is to send the buyer
+ * to PayPal to first authorize payment.
+ */
+
+/**
+ * Purpose:    Prepares the parameters for the SetExpressCheckout API Call.
+ * Inputs:
+ *        paymentAmount:    Total value of the shopping cart
+ *        currencyCodeType:    Currency code value the PayPal API
+ *        paymentType:        paymentType has to be one of the following values: Sale or Order or Authorization
+ *        returnURL:            the page where buyers return to after they are done with the payment review on PayPal
+ *        cancelURL:            the page where buyers return to when they cancel the payment review on PayPal.
+ */
+function CallShortcutExpressCheckout($paymentAmount, $currencyCodeType, $paymentType, $returnURL, $cancelURL, $extra)
+{
+    // Construct the parameter string that describes the SetExpressCheckout API call in the shortcut implementation
+    $nvpstr = "&PAYMENTREQUEST_0_AMT=".$paymentAmount;
+    $nvpstr .= "&PAYMENTREQUEST_0_ITEMAMT=".$paymentAmount;
+    $nvpstr .= "&PAYMENTREQUEST_0_PAYMENTACTION=".$paymentType;
+    $nvpstr .= "&RETURNURL=".$returnURL;
+    $nvpstr .= "&CANCELURL=".$cancelURL;
+    $nvpstr .= "&PAYMENTREQUEST_0_CURRENCYCODE=".$currencyCodeType;
+    $nvpstr .= $extra;
+
+    $_SESSION["currencyCodeType"] = $currencyCodeType;
+    $_SESSION["PaymentType"] = $paymentType;
+
+    /**
+     * Make the API call to PayPal
+     * If the API call succeded, then redirect the buyer to PayPal to begin to authorize payment.
+     * If an error occured, show the resulting errors.
+     */
+    $resArray = hash_call("SetExpressCheckout", $nvpstr);
+    $ack = strtoupper($resArray["ACK"]);
+    if ($ack == "SUCCESS" || $ack == "SUCCESSWITHWARNING") {
+        $token = urldecode($resArray["TOKEN"]);
+        $_SESSION['TOKEN'] = $token;
+    }
+
+    return $resArray;
+}
+
+/**
+ * Purpose:    Prepares the parameters for the SetExpressCheckout API Call.
+ * Inputs:
+ *        paymentAmount:    Total value of the shopping cart
+ *        currencyCodeType:    Currency code value the PayPal API
+ *        paymentType:        paymentType has to be one of the following values: Sale or Order or Authorization
+ *        returnURL:            the page where buyers return to after they are done with the payment review on PayPal
+ *        cancelURL:            the page where buyers return to when they cancel the payment review on PayPal
+ *        shipToName:        the Ship to name entered on the merchant's site
+ *        shipToStreet:        the Ship to Street entered on the merchant's site
+ *        shipToCity:            the Ship to City entered on the merchant's site
+ *        shipToState:        the Ship to State entered on the merchant's site
+ *        shipToCountryCode:    the Code for Ship to Country entered on the merchant's site
+ *        shipToZip:            the Ship to ZipCode entered on the merchant's site
+ *        shipToStreet2:        the Ship to Street2 entered on the merchant's site
+ *        phoneNum:            the phoneNum  entered on the merchant's site.
+ */
+function CallMarkExpressCheckout(
+    $paymentAmount,
+    $currencyCodeType,
+    $paymentType,
+    $returnURL,
+    $cancelURL,
+    $shipToName,
+    $shipToStreet,
+    $shipToCity,
+    $shipToState,
+    $shipToCountryCode,
+    $shipToZip,
+    $shipToStreet2,
+    $phoneNum
+) {
+    // Construct the parameter string that describes the SetExpressCheckout API call in the shortcut implementation
+    $nvpstr = "&PAYMENTREQUEST_0_AMT=".$paymentAmount;
+    $nvpstr = $nvpstr."&PAYMENTREQUEST_0_PAYMENTACTION=".$paymentType;
+    $nvpstr = $nvpstr."&RETURNURL=".$returnURL;
+    $nvpstr = $nvpstr."&CANCELURL=".$cancelURL;
+    $nvpstr = $nvpstr."&PAYMENTREQUEST_0_CURRENCYCODE=".$currencyCodeType;
+    $nvpstr = $nvpstr."&ADDROVERRIDE=1";
+    $nvpstr = $nvpstr."&PAYMENTREQUEST_0_SHIPTONAME=".$shipToName;
+    $nvpstr = $nvpstr."&PAYMENTREQUEST_0_SHIPTOSTREET=".$shipToStreet;
+    $nvpstr = $nvpstr."&PAYMENTREQUEST_0_SHIPTOSTREET2=".$shipToStreet2;
+    $nvpstr = $nvpstr."&PAYMENTREQUEST_0_SHIPTOCITY=".$shipToCity;
+    $nvpstr = $nvpstr."&PAYMENTREQUEST_0_SHIPTOSTATE=".$shipToState;
+    $nvpstr = $nvpstr."&PAYMENTREQUEST_0_SHIPTOCOUNTRYCODE=".$shipToCountryCode;
+    $nvpstr = $nvpstr."&PAYMENTREQUEST_0_SHIPTOZIP=".$shipToZip;
+    $nvpstr = $nvpstr."&PAYMENTREQUEST_0_SHIPTOPHONENUM=".$phoneNum;
+
+    $_SESSION["currencyCodeType"] = $currencyCodeType;
+    $_SESSION["PaymentType"] = $paymentType;
+
+    /**
+     * Make the API call to PayPal
+     * If the API call succeded, then redirect the buyer to PayPal to begin to authorize payment.
+     * If an error occured, show the resulting errors.
+     */
+    $resArray = hash_call("SetExpressCheckout", $nvpstr);
+    $ack = strtoupper($resArray["ACK"]);
+    if ($ack == "SUCCESS" || $ack == "SUCCESSWITHWARNING") {
+        $token = urldecode($resArray["TOKEN"]);
+        $_SESSION['TOKEN'] = $token;
+    }
+
+    return $resArray;
+}
+
+/**
+ * Purpose: Prepares the parameters for the GetExpressCheckoutDetails API Call.
+ *
+ * Inputs:
+ *        None
+ * Returns:
+ *        The NVP Collection object of the GetExpressCheckoutDetails Call Response.
+ */
+function GetShippingDetails($token)
+{
+    /**
+     * At this point, the buyer has completed authorizing the payment
+     * at PayPal.  The function will call PayPal to obtain the details
+     * of the authorization, including any shipping information of the
+     * buyer.  Remember, the authorization is not a completed transaction
+     * at this state - the buyer still needs an additional step to finalize
+     * the transaction.
+     *
+     * Build a second API request to PayPal, using the token as the
+     * ID to get the details on the payment authorization
+     */
+    $nvpstr = "&TOKEN=".$token;
+
+    /**
+     * Make the API call and store the results in an array.
+     * If the call was a success, show the authorization details, and provide
+     * an action to complete the payment.
+     * If failed, show the error.
+     */
+    $resArray = hash_call("GetExpressCheckoutDetails", $nvpstr);
+    $ack = strtoupper($resArray["ACK"]);
+    if ($ack == "SUCCESS" || $ack == "SUCCESSWITHWARNING") {
+        $_SESSION['payer_id'] = $resArray['PAYERID'];
+    }
+
+    return $resArray;
+}
+
+/**
+ * Purpose:    Prepares the parameters for the GetExpressCheckoutDetails API Call.
+ * Inputs:
+ * sBNCode:    The BN code used by PayPal to track the transactions from a given shopping cart.
+ * Returns:
+ *        The NVP Collection object of the GetExpressCheckoutDetails Call Response.
+ */
+function ConfirmPayment($FinalPaymentAmt)
+{
+    /**
+     * Gather the information to make the final call to
+     * finalize the PayPal payment.  The variable nvpstr
+     * holds the name value pairs.
+     */
+
+    //Format the other parameters that were stored in the session from the previous calls
+
+    $token = urlencode($_SESSION['TOKEN']);
+    $paymentType = urlencode($_SESSION['PaymentType']);
+    $currencyCodeType = urlencode($_SESSION['currencyCodeType']);
+    $payerID = urlencode($_SESSION['payer_id']);
+    $serverName = urlencode($_SERVER['SERVER_NAME']);
+
+    $nvpstr =
+        '&TOKEN='.$token.'&PAYERID='.$payerID.'&PAYMENTREQUEST_0_PAYMENTACTION='.$paymentType.'&PAYMENTREQUEST_0_AMT='
+        .$FinalPaymentAmt;
+    $nvpstr .= '&PAYMENTREQUEST_0_CURRENCYCODE='.$currencyCodeType.'&IPADDRESS='.$serverName;
+    $nvpstr = '&'.http_build_query([
+            'TOKEN' => $token,
+            'PAYERID' => $payerID,
+            'PAYMENTACTION' => $paymentType,
+            'PAYMENTREQUEST_0_AMT' => $FinalPaymentAmt,
+            'PAYMENTREQUEST_0_CURRENCYCODE' => $currencyCodeType,
+            'IPADDRESS' => $serverName,
+            'paymentactionspecified' => 'true',
+        ]);
+
+    /**
+     * Make the call to PayPal to finalize payment
+     * If an error occured, show the resulting errors.
+     */
+    $resArray = hash_call("DoExpressCheckoutPayment", $nvpstr);
+
+    /**
+     * Display the API response back to the browser.
+     * If the response from PayPal was a success, display the response parameters
+     * If the response was an error, display the errors received using APIError.php.
+     */
+    $ack = strtoupper($resArray["ACK"]);
+
+    return $resArray;
+}
+
+/**
+ * Purpose:    This function makes a DoDirectPayment API call
+ * Inputs:
+ *        paymentType:        paymentType has to be one of the following values: Sale or Order or Authorization
+ *        paymentAmount:    total value of the shopping cart
+ *        currencyCode:        currency code value the PayPal API
+ *        firstName:            first name as it appears on credit card
+ *        lastName:            last name as it appears on credit card
+ *        street:                buyer's street address line as it appears on credit card
+ *        city:                buyer's city
+ *        state:                buyer's state
+ *        countryCode:        buyer's country code
+ *        zip:                buyer's zip
+ *        creditCardType:        buyer's credit card type (i.e. Visa, MasterCard ... )
+ *        creditCardNumber:    buyers credit card number without any spaces, dashes or any other characters
+ *        expDate:            credit card expiration date
+ *        cvv2:                Card Verification Value
+ * Returns:
+ *        The NVP Collection object of the DoDirectPayment Call Response.
+ */
+function DirectPayment(
+    $paymentType,
+    $paymentAmount,
+    $creditCardType,
+    $creditCardNumber,
+    $expDate,
+    $cvv2,
+    $firstName,
+    $lastName,
+    $street,
+    $city,
+    $state,
+    $zip,
+    $countryCode,
+    $currencyCode
+) {
+    //Construct the parameter string that describes DoDirectPayment
+    $nvpstr = "&AMT=".$paymentAmount;
+    $nvpstr = $nvpstr."&CURRENCYCODE=".$currencyCode;
+    $nvpstr = $nvpstr."&PAYMENTACTION=".$paymentType;
+    $nvpstr = $nvpstr."&CREDITCARDTYPE=".$creditCardType;
+    $nvpstr = $nvpstr."&ACCT=".$creditCardNumber;
+    $nvpstr = $nvpstr."&EXPDATE=".$expDate;
+    $nvpstr = $nvpstr."&CVV2=".$cvv2;
+    $nvpstr = $nvpstr."&FIRSTNAME=".$firstName;
+    $nvpstr = $nvpstr."&LASTNAME=".$lastName;
+    $nvpstr = $nvpstr."&STREET=".$street;
+    $nvpstr = $nvpstr."&CITY=".$city;
+    $nvpstr = $nvpstr."&STATE=".$state;
+    $nvpstr = $nvpstr."&COUNTRYCODE=".$countryCode;
+    $nvpstr = $nvpstr."&IPADDRESS=".$_SERVER['REMOTE_ADDR'];
+
+    $resArray = hash_call("DoDirectPayment", $nvpstr);
+
+    return $resArray;
+}
+
+/**
+ * Purpose:    This function makes a MassPay API call
+ * Inputs:
+ *        Beneficiarie:        Array that contains the Beneficiearie paypal account and the payout amount
+ *        Currency Code:    The currency Iso code
+ * Returns:
+ *        The NVP Collection object of the MassPay Call Response.
+ */
+function MassPayment(array $beneficiaries, $currencyCode)
+{
+    $nvpstr = "&RECEIVERTYPE=EmailAddress";
+    $nvpstr .= "&CURRENCYCODE=".$currencyCode;
+
+    $index = 0;
+
+    foreach ($beneficiaries as $beneficiary) {
+        $nvpstr .= "&L_EMAIL".$index."=".$beneficiary['paypal_account'];
+        $nvpstr .= "&L_AMT".$index."=".$beneficiary['commission'];
+        $index++;
+    }
+
+    $resArray = hash_call("MassPay", $nvpstr);
+
+    return $resArray;
+}
+
+/**
+ * hash_call: Function to perform the API call to PayPal using API signature.
+ *
+ * @methodName is name of API  method.
+ * @nvpStr is nvp string.
+ * returns an associtive array containing the response from the server.
+ */
+function hash_call($methodName, $nvpStr)
+{
+    //declaring of global variables
+    global $API_Endpoint, $version, $API_UserName, $API_Password, $API_Signature;
+    global $USE_PROXY, $PROXY_HOST, $PROXY_PORT;
+    global $sBNCode;
+
+    //setting the curl parameters.
+    $ch = curl_init();
+    curl_setopt($ch, CURLOPT_URL, $API_Endpoint);
+    curl_setopt($ch, CURLOPT_VERBOSE, 1);
+    //turning off the server and peer verification(TrustManager Concept).
+    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
+    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
+    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
+    curl_setopt($ch, CURLOPT_POST, 1);
+
+    //if USE_PROXY constant set to TRUE in Constants.php, then only proxy will be enabled.
+    //Set proxy name to PROXY_HOST and port number to PROXY_PORT in constants.php
+    if ($USE_PROXY) {
+        curl_setopt($ch, CURLOPT_PROXY, $PROXY_HOST.":".$PROXY_PORT);
+    }
+
+    //NVPRequest for submitting to server
+    $nvpreq = "METHOD=".urlencode($methodName)."&VERSION=".urlencode($version).
+        "&PWD=".urlencode($API_Password)."&USER=".urlencode($API_UserName).
+        "&SIGNATURE=".urlencode($API_Signature).$nvpStr."&BUTTONSOURCE=".urlencode($sBNCode);
+
+    //setting the nvpreq as POST FIELD to curl
+    curl_setopt($ch, CURLOPT_POSTFIELDS, $nvpreq);
+    //getting response from server
+    $response = curl_exec($ch);
+    //converting NVPResponse to an Associative Array
+    $nvpResArray = deformatNVP($response);
+    $nvpReqArray = deformatNVP($nvpreq);
+
+    $_SESSION['nvpReqArray'] = $nvpReqArray;
+
+    if (curl_errno($ch)) {
+        // moving to display page to display curl errors
+        $_SESSION['curl_error_no'] = curl_errno($ch);
+        $_SESSION['curl_error_msg'] = curl_error($ch);
+    //Execute the Error handling module to display errors.
+    } else {
+        //closing the curl
+        curl_close($ch);
+    }
+
+    return $nvpResArray;
+}
+
+/**
+ * Purpose: Redirects to PayPal.com site.
+ * Inputs:  NVP string.
+ */
+function RedirectToPayPal($token)
+{
+    global $PAYPAL_URL;
+    // Redirect to paypal.com here
+    $payPalURL = $PAYPAL_URL.$token;
+    header("Location: ".$payPalURL);
+    exit;
+}
+
+/**
+ * This function will take NVPString and convert it to an Associative Array and it will decode the response.
+ * It is usefull to search for a particular key and displaying arrays.
+ *
+ * @nvpstr is NVPString.
+ * @nvpArray is Associative Array.
+ */
+function deformatNVP($nvpstr)
+{
+    $intial = 0;
+    $nvpArray = [];
+
+    while (strlen($nvpstr)) {
+        //postion of Key
+        $keypos = strpos($nvpstr, '=');
+        //position of value
+        $valuepos = strpos($nvpstr, '&') ? strpos($nvpstr, '&') : strlen($nvpstr);
+        /*getting the Key and Value values and storing in a Associative Array*/
+        $keyval = substr($nvpstr, $intial, $keypos);
+        $valval = substr($nvpstr, $keypos + 1, $valuepos - $keypos - 1);
+        //decoding the respose
+        $nvpArray[urldecode($keyval)] = urldecode($valval);
+        $nvpstr = substr($nvpstr, $valuepos + 1, strlen($nvpstr));
+    }
+
+    return $nvpArray;
+}

plugin/buycourses/src/process.php

@@ -0,0 +1,188 @@
+<?php
+/* For license terms, see /license.txt */
+
+use ChamiloSession as Session;
+
+/**
+ * Process payments for the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+require_once '../config.php';
+
+$currentUserId = api_get_user_id();
+
+$htmlHeadXtra[] = '<link rel="stylesheet" type="text/css" href="'.api_get_path(
+        WEB_PLUGIN_PATH
+    ).'buycourses/resources/css/style.css"/>';
+$plugin = BuyCoursesPlugin::create();
+$includeSession = $plugin->get('include_sessions') === 'true';
+$paypalEnabled = $plugin->get('paypal_enable') === 'true';
+$transferEnabled = $plugin->get('transfer_enable') === 'true';
+$culqiEnabled = $plugin->get('culqi_enable') === 'true';
+$tpvRedsysEnable = $plugin->get('tpv_redsys_enable') === 'true';
+$stripeEnable = $plugin->get('stripe_enable') === 'true';
+$tpvCecabankEnable = $plugin->get('cecabank_enable') === 'true';
+
+if (!$paypalEnabled && !$transferEnabled && !$culqiEnabled && !$tpvRedsysEnable && !$stripeEnable && !$tpvCecabankEnable) {
+    api_not_allowed(true);
+}
+
+if (!isset($_REQUEST['t'], $_REQUEST['i'])) {
+    api_not_allowed(true);
+}
+
+$currency = $plugin->getSelectedCurrency();
+$buyingCourse = intval($_REQUEST['t']) === BuyCoursesPlugin::PRODUCT_TYPE_COURSE;
+$buyingSession = intval($_REQUEST['t']) === BuyCoursesPlugin::PRODUCT_TYPE_SESSION;
+$queryString = 'i='.intval($_REQUEST['i']).'&t='.intval($_REQUEST['t']);
+
+$coupon = null;
+
+if (isset($_REQUEST['c'])) {
+    $couponCode = $_REQUEST['c'];
+    if ($buyingCourse) {
+        $coupon = $plugin->getCouponByCode($couponCode, BuyCoursesPlugin::PRODUCT_TYPE_COURSE, $_REQUEST['i']);
+    } else {
+        $coupon = $plugin->getCouponByCode($couponCode, BuyCoursesPlugin::PRODUCT_TYPE_SESSION, $_REQUEST['i']);
+    }
+}
+
+if (empty($currentUserId)) {
+    Session::write('buy_course_redirect', api_get_self().'?'.$queryString);
+    header('Location: '.api_get_path(WEB_CODE_PATH).'auth/inscription.php');
+    exit;
+}
+
+if ($buyingCourse) {
+    $courseInfo = $plugin->getCourseInfo($_REQUEST['i'], $coupon);
+    $item = $plugin->getItemByProduct($_REQUEST['i'], BuyCoursesPlugin::PRODUCT_TYPE_COURSE);
+} elseif ($buyingSession) {
+    $sessionInfo = $plugin->getSessionInfo($_REQUEST['i'], $coupon);
+    $item = $plugin->getItemByProduct($_REQUEST['i'], BuyCoursesPlugin::PRODUCT_TYPE_SESSION);
+}
+
+$form = new FormValidator('confirm_sale');
+if ($form->validate()) {
+    $formValues = $form->getSubmitValues();
+
+    if (!$formValues['payment_type']) {
+        Display::addFlash(
+            Display::return_message($plugin->get_lang('NeedToSelectPaymentType'), 'error', false)
+        );
+        header('Location:'.api_get_self().'?'.$queryString);
+        exit;
+    }
+
+    $saleId = $plugin->registerSale($item['id'], $formValues['payment_type'], $formValues['c']);
+
+    if ($saleId !== false) {
+        $_SESSION['bc_sale_id'] = $saleId;
+
+        if (isset($formValues['c'])) {
+            $couponSaleId = $plugin->registerCouponSale($saleId, $formValues['c']);
+            if ($couponSaleId !== false) {
+                $plugin->updateCouponDelivered($formValues['c']);
+                $_SESSION['bc_coupon_id'] = $formValues['c'];
+            }
+        }
+
+        header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/process_confirm.php');
+    }
+
+    exit;
+}
+
+$paymentTypesOptions = $plugin->getPaymentTypes(true);
+
+$count = count($paymentTypesOptions);
+if ($count === 0) {
+    $form->addHtml($plugin->get_lang('NoPaymentOptionAvailable'));
+    $form->addHtml('<br />');
+    $form->addHtml('<br />');
+} elseif ($count === 1) {
+    // get the only array item
+    foreach ($paymentTypesOptions as $type => $value) {
+        $form->addHtml(sprintf($plugin->get_lang('XIsOnlyPaymentMethodAvailable'), $value));
+        $form->addHtml('<br />');
+        $form->addHtml('<br />');
+        $form->addHidden('payment_type', $type);
+    }
+} else {
+    $form->addHtml(
+        Display::return_message(
+            $plugin->get_lang('PleaseSelectThePaymentMethodBeforeConfirmYourOrder'),
+            'info'
+        )
+    );
+    $form->addRadio('payment_type', null, $paymentTypesOptions);
+}
+
+$form->addHidden('t', intval($_REQUEST['t']));
+$form->addHidden('i', intval($_REQUEST['i']));
+if ($coupon != null) {
+    $form->addHidden('c', intval($coupon['id']));
+}
+$form->addButton('submit', $plugin->get_lang('ConfirmOrder'), 'check', 'success', 'btn-lg pull-right');
+
+$formCoupon = new FormValidator('confirm_coupon');
+if ($formCoupon->validate()) {
+    $formCouponValues = $formCoupon->getSubmitValues();
+
+    if (!$formCouponValues['coupon_code']) {
+        Display::addFlash(
+            Display::return_message($plugin->get_lang('NeedToAddCouponCode'), 'error', false)
+        );
+        header('Location:'.api_get_self().'?'.$queryString);
+        exit;
+    }
+
+    if ($buyingCourse) {
+        $coupon = $plugin->getCouponByCode($formCouponValues['coupon_code'], BuyCoursesPlugin::PRODUCT_TYPE_COURSE, $_REQUEST['i']);
+    } else {
+        $coupon = $plugin->getCouponByCode($formCouponValues['coupon_code'], BuyCoursesPlugin::PRODUCT_TYPE_SESSION, $_REQUEST['i']);
+    }
+
+    if ($coupon == null) {
+        Display::addFlash(
+            Display::return_message($plugin->get_lang('CouponNotValid'), 'error', false)
+        );
+        header('Location:'.api_get_self().'?'.$queryString);
+        exit;
+    }
+
+    Display::addFlash(
+        Display::return_message($plugin->get_lang('CouponRedeemed'), 'success', false)
+    );
+
+    header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/process.php?i='.$_REQUEST['i'].'&t='.$_REQUEST['t'].'&c='.$formCouponValues['coupon_code']);
+
+    exit;
+}
+$formCoupon->addText('coupon_code', $plugin->get_lang('CouponsCode'), true);
+$formCoupon->addHidden('t', intval($_GET['t']));
+$formCoupon->addHidden('i', intval($_GET['i']));
+$formCoupon->addButton('submit', $plugin->get_lang('RedeemCoupon'), 'check', 'success', 'btn-lg pull-right');
+
+// View
+$templateName = $plugin->get_lang('PaymentMethods');
+$interbreadcrumb[] = ['url' => 'course_catalog.php', 'name' => $plugin->get_lang('CourseListOnSale')];
+
+$tpl = new Template($templateName);
+$tpl->assign('item_type', (int) $_GET['t']);
+$tpl->assign('buying_course', $buyingCourse);
+$tpl->assign('buying_session', $buyingSession);
+$tpl->assign('user', api_get_user_info());
+$tpl->assign('form_coupon', $formCoupon->returnForm());
+$tpl->assign('form', $form->returnForm());
+
+if ($buyingCourse) {
+    $tpl->assign('course', $courseInfo);
+} elseif ($buyingSession) {
+    $tpl->assign('session', $sessionInfo);
+}
+
+$content = $tpl->fetch('buycourses/view/process.tpl');
+
+$tpl->assign('content', $content);
+$tpl->display_one_col_template();

plugin/buycourses/src/process_confirm.php

@@ -0,0 +1,597 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * Process purchase confirmation script for the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+require_once '../config.php';
+
+$plugin = BuyCoursesPlugin::create();
+
+$saleId = $_SESSION['bc_sale_id'];
+$couponId = (!empty($_SESSION['bc_coupon_id']) ?? '');
+
+if (empty($saleId)) {
+    api_not_allowed(true);
+}
+
+$sale = $plugin->getSale($saleId);
+
+$coupon = [];
+if (!empty($couponId)) {
+    $coupon = $plugin->getCoupon($couponId, $sale['product_type'], $sale['product_id']);
+}
+
+$userInfo = api_get_user_info($sale['user_id']);
+
+if (empty($sale)) {
+    api_not_allowed(true);
+}
+
+$currency = $plugin->getCurrency($sale['currency_id']);
+$globalParameters = $plugin->getGlobalParameters();
+
+switch ($sale['payment_type']) {
+    case BuyCoursesPlugin::PAYMENT_TYPE_PAYPAL:
+        $paypalParams = $plugin->getPaypalParams();
+
+        $pruebas = $paypalParams['sandbox'] == 1;
+        $paypalUsername = $paypalParams['username'];
+        $paypalPassword = $paypalParams['password'];
+        $paypalSignature = $paypalParams['signature'];
+
+        require_once "paypalfunctions.php";
+
+        $i = 0;
+        $extra = "&L_PAYMENTREQUEST_0_NAME0={$sale['product_name']}";
+        $extra .= "&L_PAYMENTREQUEST_0_AMT0={$sale['price']}";
+        $extra .= "&L_PAYMENTREQUEST_0_QTY0=1";
+
+        $expressCheckout = CallShortcutExpressCheckout(
+            $sale['price'],
+            $currency['iso_code'],
+            'paypal',
+            api_get_path(WEB_PLUGIN_PATH).'buycourses/src/success.php',
+            api_get_path(WEB_PLUGIN_PATH).'buycourses/src/error.php',
+            $extra
+        );
+
+        if ($expressCheckout["ACK"] !== 'Success') {
+            $erroMessage = vsprintf(
+                $plugin->get_lang('ErrorOccurred'),
+                [$expressCheckout['L_ERRORCODE0'], $expressCheckout['L_LONGMESSAGE0']]
+            );
+            Display::addFlash(
+                Display::return_message($erroMessage, 'error', false)
+            );
+            header('Location: ../index.php');
+            exit;
+        }
+
+        if (!empty($globalParameters['sale_email'])) {
+            $messageConfirmTemplate = new Template();
+            $messageConfirmTemplate->assign('user', $userInfo);
+            $messageConfirmTemplate->assign(
+                'sale',
+                [
+                    'date' => $sale['date'],
+                    'product' => $sale['product_name'],
+                    'currency' => $currency['iso_code'],
+                    'price' => $sale['price'],
+                    'reference' => $sale['reference'],
+                ]
+            );
+
+            api_mail_html(
+                '',
+                $globalParameters['sale_email'],
+                $plugin->get_lang('bc_subject'),
+                $messageConfirmTemplate->fetch('buycourses/view/message_confirm.tpl')
+            );
+        }
+
+        RedirectToPayPal($expressCheckout["TOKEN"]);
+        break;
+    case BuyCoursesPlugin::PAYMENT_TYPE_TRANSFER:
+        $buyingCourse = false;
+        $buyingSession = false;
+
+        switch ($sale['product_type']) {
+            case BuyCoursesPlugin::PRODUCT_TYPE_COURSE:
+                $buyingCourse = true;
+                $course = $plugin->getCourseInfo($sale['product_id'], $coupon);
+                break;
+            case BuyCoursesPlugin::PRODUCT_TYPE_SESSION:
+                $buyingSession = true;
+                $session = $plugin->getSessionInfo($sale['product_id'], $coupon);
+                break;
+        }
+
+        $transferAccounts = $plugin->getTransferAccounts();
+        $infoEmailExtra = $plugin->getTransferInfoExtra()['tinfo_email_extra'];
+
+        $form = new FormValidator(
+            'success',
+            'POST',
+            api_get_self(),
+            null,
+            null,
+            FormValidator::LAYOUT_INLINE
+        );
+
+        if ($form->validate()) {
+            $formValues = $form->getSubmitValues();
+
+            if (isset($formValues['cancel'])) {
+                $plugin->cancelSale($sale['id']);
+
+                unset($_SESSION['bc_sale_id']);
+                unset($_SESSION['bc_coupon_id']);
+
+                header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/index.php');
+                exit;
+            }
+
+            $messageTemplate = new Template();
+            $messageTemplate->assign('user', $userInfo);
+            $messageTemplate->assign(
+                'sale',
+                [
+                    'date' => $sale['date'],
+                    'product' => $sale['product_name'],
+                    'currency' => $currency['iso_code'],
+                    'price' => $sale['price'],
+                    'reference' => $sale['reference'],
+                ]
+            );
+            $messageTemplate->assign('transfer_accounts', $transferAccounts);
+            $messageTemplate->assign('info_email_extra', $infoEmailExtra);
+
+            MessageManager::send_message_simple(
+                $userInfo['user_id'],
+                $plugin->get_lang('bc_subject'),
+                $messageTemplate->fetch('buycourses/view/message_transfer.tpl')
+            );
+
+            if (!empty($globalParameters['sale_email'])) {
+                $messageConfirmTemplate = new Template();
+                $messageConfirmTemplate->assign('user', $userInfo);
+                $messageConfirmTemplate->assign(
+                    'sale',
+                    [
+                        'date' => $sale['date'],
+                        'product' => $sale['product_name'],
+                        'currency' => $currency['iso_code'],
+                        'price' => $sale['price'],
+                        'reference' => $sale['reference'],
+                    ]
+                );
+
+                api_mail_html(
+                    '',
+                    $globalParameters['sale_email'],
+                    $plugin->get_lang('bc_subject'),
+                    $messageConfirmTemplate->fetch('buycourses/view/message_confirm.tpl')
+                );
+            }
+
+            Display::addFlash(
+                Display::return_message(
+                    sprintf(
+                        $plugin->get_lang('PurchaseStatusX'),
+                        $plugin->get_lang('PendingReasonByTransfer')
+                    ),
+                    'success',
+                    false
+                )
+            );
+
+            unset($_SESSION['bc_sale_id']);
+            unset($_SESSION['bc_coupon_id']);
+            header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/course_catalog.php');
+            exit;
+        }
+
+        $form->addButton(
+            'confirm',
+            $plugin->get_lang('ConfirmOrder'),
+            'check',
+            'success',
+            'default',
+            null,
+            ['id' => 'confirm']
+        );
+        $form->addButtonCancel($plugin->get_lang('CancelOrder'), 'cancel');
+
+        $template = new Template();
+
+        if ($buyingCourse) {
+            $template->assign('course', $course);
+        } elseif ($buyingSession) {
+            $template->assign('session', $session);
+        }
+
+        $template->assign('buying_course', $buyingCourse);
+        $template->assign('buying_session', $buyingSession);
+        $template->assign('terms', $globalParameters['terms_and_conditions']);
+        $template->assign('title', $sale['product_name']);
+        $template->assign('price', $sale['price']);
+        $template->assign('currency', $sale['currency_id']);
+        $template->assign('user', $userInfo);
+        $template->assign('transfer_accounts', $transferAccounts);
+        $template->assign('form', $form->returnForm());
+        $template->assign('is_bank_transfer', true);
+
+        $content = $template->fetch('buycourses/view/process_confirm.tpl');
+
+        $template->assign('content', $content);
+        $template->display_one_col_template();
+        break;
+    case BuyCoursesPlugin::PAYMENT_TYPE_CULQI:
+        // We need to include the main online script, acording to the Culqi documentation the JS needs to be loeaded
+        // directly from the main url "https://integ-pago.culqi.com" because a local copy of this JS is not supported
+        $htmlHeadXtra[] = '<script src="//integ-pago.culqi.com/js/v1"></script>';
+
+        $buyingCourse = false;
+        $buyingSession = false;
+
+        switch ($sale['product_type']) {
+            case BuyCoursesPlugin::PRODUCT_TYPE_COURSE:
+                $buyingCourse = true;
+                $course = $plugin->getCourseInfo($sale['product_id'], $coupon);
+                break;
+            case BuyCoursesPlugin::PRODUCT_TYPE_SESSION:
+                $buyingSession = true;
+                $session = $plugin->getSessionInfo($sale['product_id'], $coupon);
+                break;
+        }
+
+        $form = new FormValidator(
+            'success',
+            'POST',
+            api_get_self(),
+            null,
+            null,
+            FormValidator::LAYOUT_INLINE
+        );
+
+        if ($form->validate()) {
+            $formValues = $form->getSubmitValues();
+
+            if (isset($formValues['cancel'])) {
+                $plugin->cancelSale($sale['id']);
+
+                unset($_SESSION['bc_sale_id']);
+                unset($_SESSION['bc_coupon_id']);
+
+                Display::addFlash(
+                    Display::return_message(
+                        $plugin->get_lang('OrderCanceled'),
+                        'warning',
+                        false
+                    )
+                );
+
+                header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/index.php');
+                exit;
+            }
+        }
+        $form->addButton(
+            'confirm',
+            $plugin->get_lang('ConfirmOrder'),
+            'check',
+            'success',
+            'default',
+            null,
+            ['id' => 'confirm']
+        );
+        $form->addButton(
+            'cancel',
+            $plugin->get_lang('CancelOrder'),
+            'times',
+            'danger',
+            'default',
+            null,
+            ['id' => 'cancel']
+        );
+
+        $template = new Template();
+
+        if ($buyingCourse) {
+            $template->assign('course', $course);
+        } elseif ($buyingSession) {
+            $template->assign('session', $session);
+        }
+
+        $template->assign('buying_course', $buyingCourse);
+        $template->assign('buying_session', $buyingSession);
+        $template->assign('terms', $globalParameters['terms_and_conditions']);
+        $template->assign('title', $sale['product_name']);
+        $template->assign('price', floatval($sale['price']));
+        $template->assign('currency', $plugin->getSelectedCurrency());
+        $template->assign('user', $userInfo);
+        $template->assign('sale', $sale);
+        $template->assign('form', $form->returnForm());
+        $template->assign('is_culqi_payment', true);
+        $template->assign('culqi_params', $culqiParams = $plugin->getCulqiParams());
+
+        $content = $template->fetch('buycourses/view/process_confirm.tpl');
+
+        $template->assign('content', $content);
+        $template->display_one_col_template();
+
+        break;
+    case BuyCoursesPlugin::PAYMENT_TYPE_TPV_REDSYS:
+        $tpvRedsysParams = $plugin->getTpvRedsysParams();
+
+        require_once '../resources/apiRedsys.php';
+        $tpv = new RedsysAPI();
+
+        $merchantcode = $tpvRedsysParams['merchantcode'];
+        $terminal = $tpvRedsysParams['terminal'];
+        $currency = $tpvRedsysParams['currency'];
+        $transactionType = "0";
+        $urlMerchant = api_get_path(WEB_PLUGIN_PATH).'buycourses/src/tpv_response.php';
+        $urlSuccess = api_get_path(WEB_PLUGIN_PATH).'buycourses/src/tpv_success.php';
+        $urlFailed = api_get_path(WEB_PLUGIN_PATH).'buycourses/src/tpv_error.php';
+        $order = str_pad(strval($saleId), 4, "0", STR_PAD_LEFT);
+        $amount = $sale['price'] * 100;
+        $description = $plugin->get_lang('OrderReference').": ".$sale['reference'];
+        $tpv->setParameter("DS_MERCHANT_AMOUNT", $amount);
+        $tpv->setParameter("DS_MERCHANT_ORDER", $order);
+        $tpv->setParameter("DS_MERCHANT_MERCHANTCODE", $merchantcode);
+        $tpv->setParameter("DS_MERCHANT_CURRENCY", $currency);
+        $tpv->setParameter("DS_MERCHANT_TRANSACTIONTYPE", $transactionType);
+        $tpv->setParameter("DS_MERCHANT_TERMINAL", $terminal);
+        $tpv->setParameter("DS_MERCHANT_MERCHANTURL", $urlMerchant);
+        $tpv->setParameter("DS_MERCHANT_URLOK", $urlSuccess);
+        $tpv->setParameter("DS_MERCHANT_URLKO", $urlFailed);
+        $tpv->setParameter("DS_MERCHANT_PRODUCTDESCRIPTION", $description);
+
+        $version = "HMAC_SHA256_V1";
+        $kc = $tpvRedsysParams['kc'];
+
+        $urlTpv = $tpvRedsysParams['url_redsys'];
+        $sandboxFlag = $tpvRedsysParams['sandbox'] == 1;
+        if ($sandboxFlag === true) {
+            $urlTpv = $tpvRedsysParams['url_redsys_sandbox'];
+        }
+
+        $params = $tpv->createMerchantParameters();
+        $signature = $tpv->createMerchantSignature($kc);
+
+        echo '<form name="tpv_chamilo" action="'.$urlTpv.'" method="POST">';
+        echo '<input type="hidden" name="Ds_SignatureVersion" value="'.$version.'" />';
+        echo '<input type="hidden" name="Ds_MerchantParameters" value="'.$params.'" />';
+        echo '<input type="hidden" name="Ds_Signature" value="'.$signature.'" />';
+        echo '</form>';
+
+        echo '<SCRIPT language=javascript>';
+        echo 'document.tpv_chamilo.submit();';
+        echo '</script>';
+
+        break;
+    case BuyCoursesPlugin::PAYMENT_TYPE_STRIPE:
+        $buyingCourse = false;
+        $buyingSession = false;
+
+        switch ($sale['product_type']) {
+            case BuyCoursesPlugin::PRODUCT_TYPE_COURSE:
+                $buyingCourse = true;
+                $course = $plugin->getCourseInfo($sale['product_id'], $coupon);
+                break;
+            case BuyCoursesPlugin::PRODUCT_TYPE_SESSION:
+                $buyingSession = true;
+                $session = $plugin->getSessionInfo($sale['product_id'], $coupon);
+                break;
+        }
+
+        $form = new FormValidator(
+            'success',
+            'POST',
+            api_get_self(),
+            null,
+            null,
+            FormValidator::LAYOUT_INLINE
+        );
+
+        if ($form->validate()) {
+            $formValues = $form->getSubmitValues();
+
+            if (isset($formValues['cancel'])) {
+                $plugin->cancelSale($sale['id']);
+
+                unset($_SESSION['bc_sale_id']);
+                unset($_SESSION['bc_coupon_id']);
+
+                header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/index.php');
+                exit;
+            }
+
+            $stripeParams = $plugin->getStripeParams();
+            $currency = $plugin->getCurrency($sale['currency_id']);
+
+            \Stripe\Stripe::setApiKey($stripeParams['secret_key']);
+            \Stripe\Stripe::setAppInfo("ChamiloBuyCoursesPlugin");
+
+            $session = \Stripe\Checkout\Session::create([
+                'payment_method_types' => ['card'],
+                'line_items' => [[
+                    'price_data' => [
+                        'unit_amount_decimal' => $sale['price'] * 100,
+                        'currency' => $currency['iso_code'],
+                        'product_data' => [
+                            'name' => $sale['product_name'],
+                        ],
+                    ],
+                    'quantity' => 1,
+                ]],
+                'customer_email' => $_SESSION['_user']['email'],
+                'mode' => 'payment',
+                'success_url' => api_get_path(WEB_PLUGIN_PATH).'buycourses/src/stripe_success.php',
+                'cancel_url' => api_get_path(WEB_PLUGIN_PATH).'buycourses/src/stripe_cancel.php',
+            ]);
+
+            if (!empty($session)) {
+                $plugin->updateSaleReference($saleId, $session->id);
+
+                unset($_SESSION['bc_coupon_id']);
+
+                header('HTTP/1.1 301 Moved Permanently');
+                header('Location: '.$session->url);
+            } else {
+                Display::addFlash(
+                    Display::return_message(
+                        $plugin->get_lang('ErrorOccurred'),
+                         'error',
+                         false
+                        )
+                );
+                header('Location: ../index.php');
+            }
+
+            exit;
+        }
+
+        $form->addButton(
+            'confirm',
+            $plugin->get_lang('ConfirmOrder'),
+            'check',
+            'success',
+            'default',
+            null,
+            ['id' => 'confirm']
+        );
+        $form->addButtonCancel($plugin->get_lang('CancelOrder'), 'cancel');
+
+        $template = new Template();
+
+        if ($buyingCourse) {
+            $template->assign('course', $course);
+        } elseif ($buyingSession) {
+            $template->assign('session', $session);
+        }
+
+        $template->assign('buying_course', $buyingCourse);
+        $template->assign('buying_session', $buyingSession);
+        $template->assign('terms', $globalParameters['terms_and_conditions']);
+        $template->assign('title', $sale['product_name']);
+        $template->assign('price', $sale['price']);
+        $template->assign('currency', $sale['currency_id']);
+        $template->assign('user', $userInfo);
+        $template->assign('transfer_accounts', $transferAccounts);
+        $template->assign('form', $form->returnForm());
+        $template->assign('is_bank_transfer', false);
+
+        $content = $template->fetch('buycourses/view/process_confirm.tpl');
+
+        $template->assign('content', $content);
+        $template->display_one_col_template();
+
+        break;
+
+    case BuyCoursesPlugin::PAYMENT_TYPE_TPV_CECABANK:
+        $buyingCourse = false;
+        $buyingSession = false;
+
+        switch ($sale['product_type']) {
+            case BuyCoursesPlugin::PRODUCT_TYPE_COURSE:
+                $buyingCourse = true;
+                $course = $plugin->getCourseInfo($sale['product_id']);
+                break;
+            case BuyCoursesPlugin::PRODUCT_TYPE_SESSION:
+                $buyingSession = true;
+                $session = $plugin->getSessionInfo($sale['product_id']);
+                break;
+        }
+
+        $cecabankParams = $plugin->getcecabankParams();
+        $currency = $plugin->getCurrency($sale['currency_id']);
+
+        $form = new FormValidator(
+            'success',
+            'POST',
+            api_get_self(),
+            null,
+            null,
+            FormValidator::LAYOUT_INLINE
+        );
+
+        if ($form->validate()) {
+            $formValues = $form->getSubmitValues();
+
+            if (isset($formValues['cancel'])) {
+                $plugin->cancelSale($sale['id']);
+
+                unset($_SESSION['bc_sale_id']);
+                unset($_SESSION['bc_coupon_id']);
+
+                header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/index.php');
+                exit;
+            }
+
+            $urlTpv = $cecabankParams['url'];
+            $currency = $plugin->getCurrency($sale['currency_id']);
+            $signature = $plugin->getCecabankSignature($sale['reference'], $sale['price']);
+
+            echo '<form name="tpv_chamilo" action="'.$urlTpv.'" method="POST">';
+            echo '<input type="hidden" name="MerchantID" value="'.$cecabankParams['merchant_id'].'" />';
+            echo '<input type="hidden" name="AcquirerBIN" value="'.$cecabankParams['acquirer_bin'].'" />';
+            echo '<input type="hidden" name="TerminalID" value="'.$cecabankParams['terminal_id'].'" />';
+            echo '<input type="hidden" name="URL_OK" value="'.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/cecabank_success.php'.'" />';
+            echo '<input type="hidden" name="URL_NOK" value="'.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/cecabank_cancel.php'.'" />';
+            echo '<input type="hidden" name="Firma" value="'.$signature.'" />';
+            echo '<input type="hidden" name="Cifrado" value="'.$cecabankParams['cypher'].'" />';
+            echo '<input type="hidden" name="Num_operacion" value="'.$sale['reference'].'" />';
+            echo '<input type="hidden" name="Importe" value="'.($sale['price'] * 100).'" />';
+            echo '<input type="hidden" name="TipoMoneda" value="978" />';
+            echo '<input type="hidden" name="Exponente" value="'.$cecabankParams['exponent'].'" />';
+            echo '<input type="hidden" name="Pago_soportado" value="'.$cecabankParams['supported_payment'].'" />';
+            echo '</form>';
+
+            echo '<SCRIPT language=javascript>';
+            echo 'document.tpv_chamilo.submit();';
+            echo '</script>';
+
+            exit;
+        }
+
+        $form->addButton(
+            'confirm',
+            $plugin->get_lang('ConfirmOrder'),
+            'check',
+            'success',
+            'default',
+            null,
+            ['id' => 'confirm']
+        );
+        $form->addButtonCancel($plugin->get_lang('CancelOrder'), 'cancel');
+
+        $template = new Template();
+
+        if ($buyingCourse) {
+            $template->assign('course', $course);
+        } elseif ($buyingSession) {
+            $template->assign('session', $session);
+        }
+
+        $template->assign('buying_course', $buyingCourse);
+        $template->assign('buying_session', $buyingSession);
+        $template->assign('terms', $globalParameters['terms_and_conditions']);
+        $template->assign('title', $sale['product_name']);
+        $template->assign('price', $sale['price']);
+        $template->assign('currency', $sale['currency_id']);
+        $template->assign('user', $userInfo);
+        $template->assign('transfer_accounts', $transferAccounts);
+        $template->assign('form', $form->returnForm());
+        $template->assign('is_bank_transfer', false);
+
+        $content = $template->fetch('buycourses/view/process_confirm.tpl');
+
+        $template->assign('content', $content);
+        $template->display_one_col_template();
+
+        break;
+}

plugin/buycourses/src/process_subscription_confirm.php

@@ -0,0 +1,375 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * Process purchase confirmation script for the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+require_once '../config.php';
+
+$plugin = BuyCoursesPlugin::create();
+
+$saleId = $_SESSION['bc_sale_id'];
+$couponId = $_SESSION['bc_coupon_id'];
+
+if (empty($saleId)) {
+    api_not_allowed(true);
+}
+
+$sale = $plugin->getSubscriptionSale($saleId);
+
+if (!empty($couponId)) {
+    $coupon = $plugin->getCoupon($couponId, $sale['product_type'], $sale['product_id']);
+}
+
+$userInfo = api_get_user_info($sale['user_id']);
+
+if (empty($sale)) {
+    api_not_allowed(true);
+}
+
+$currency = $plugin->getCurrency($sale['currency_id']);
+$globalParameters = $plugin->getGlobalParameters();
+
+switch ($sale['payment_type']) {
+    case BuyCoursesPlugin::PAYMENT_TYPE_PAYPAL:
+        $paypalParams = $plugin->getPaypalParams();
+
+        $pruebas = $paypalParams['sandbox'] == 1;
+        $paypalUsername = $paypalParams['username'];
+        $paypalPassword = $paypalParams['password'];
+        $paypalSignature = $paypalParams['signature'];
+
+        require_once "paypalfunctions.php";
+
+        $i = 0;
+        $extra = "&L_PAYMENTREQUEST_0_NAME0={$sale['product_name']}";
+        $extra .= "&L_PAYMENTREQUEST_0_AMT0={$sale['price']}";
+        $extra .= "&L_PAYMENTREQUEST_0_QTY0=1";
+
+        $expressCheckout = CallShortcutExpressCheckout(
+            $sale['price'],
+            $currency['iso_code'],
+            'paypal',
+            api_get_path(WEB_PLUGIN_PATH).'buycourses/src/success.php',
+            api_get_path(WEB_PLUGIN_PATH).'buycourses/src/error.php',
+            $extra
+        );
+
+        if ($expressCheckout["ACK"] !== 'Success') {
+            $erroMessage = vsprintf(
+                $plugin->get_lang('ErrorOccurred'),
+                [$expressCheckout['L_ERRORCODE0'], $expressCheckout['L_LONGMESSAGE0']]
+            );
+            Display::addFlash(
+                Display::return_message($erroMessage, 'error', false)
+            );
+            header('Location: ../index.php');
+            exit;
+        }
+
+        if (!empty($globalParameters['sale_email'])) {
+            $messageConfirmTemplate = new Template();
+            $messageConfirmTemplate->assign('user', $userInfo);
+            $messageConfirmTemplate->assign(
+                'sale',
+                [
+                    'date' => $sale['date'],
+                    'product' => $sale['product_name'],
+                    'currency' => $currency['iso_code'],
+                    'price' => $sale['price'],
+                    'reference' => $sale['reference'],
+                ]
+            );
+
+            api_mail_html(
+                '',
+                $globalParameters['sale_email'],
+                $plugin->get_lang('bc_subject'),
+                $messageConfirmTemplate->fetch('buycourses/view/message_confirm.tpl')
+            );
+        }
+
+        RedirectToPayPal($expressCheckout["TOKEN"]);
+        break;
+    case BuyCoursesPlugin::PAYMENT_TYPE_TRANSFER:
+        $buyingCourse = false;
+        $buyingSession = false;
+
+        switch ($sale['product_type']) {
+            case BuyCoursesPlugin::PRODUCT_TYPE_COURSE:
+                $buyingCourse = true;
+                $course = $plugin->getSubscriptionCourseInfo($sale['product_id'], $coupon);
+                break;
+            case BuyCoursesPlugin::PRODUCT_TYPE_SESSION:
+                $buyingSession = true;
+                $session = $plugin->getSubscriptionSessionInfo($sale['product_id'], $coupon);
+                break;
+        }
+
+        $transferAccounts = $plugin->getTransferAccounts();
+        $infoEmailExtra = $plugin->getTransferInfoExtra()['tinfo_email_extra'];
+
+        $form = new FormValidator(
+            'success',
+            'POST',
+            api_get_self(),
+            null,
+            null,
+            FormValidator::LAYOUT_INLINE
+        );
+
+        if ($form->validate()) {
+            $formValues = $form->getSubmitValues();
+
+            if (isset($formValues['cancel'])) {
+                $plugin->cancelSubscriptionSale($sale['id']);
+
+                unset($_SESSION['bc_sale_id']);
+                unset($_SESSION['bc_coupon_id']);
+
+                header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/index.php');
+                exit;
+            }
+
+            $messageTemplate = new Template();
+            $messageTemplate->assign('user', $userInfo);
+            $messageTemplate->assign(
+                'sale',
+                [
+                    'date' => $sale['date'],
+                    'product' => $sale['product_name'],
+                    'currency' => $currency['iso_code'],
+                    'price' => $sale['price'],
+                    'reference' => $sale['reference'],
+                ]
+            );
+            $messageTemplate->assign('transfer_accounts', $transferAccounts);
+            $messageTemplate->assign('info_email_extra', $infoEmailExtra);
+
+            MessageManager::send_message_simple(
+                $userInfo['user_id'],
+                $plugin->get_lang('bc_subject'),
+                $messageTemplate->fetch('buycourses/view/message_transfer.tpl')
+            );
+
+            if (!empty($globalParameters['sale_email'])) {
+                $messageConfirmTemplate = new Template();
+                $messageConfirmTemplate->assign('user', $userInfo);
+                $messageConfirmTemplate->assign(
+                    'sale',
+                    [
+                        'date' => $sale['date'],
+                        'product' => $sale['product_name'],
+                        'currency' => $currency['iso_code'],
+                        'price' => $sale['price'],
+                        'reference' => $sale['reference'],
+                    ]
+                );
+
+                api_mail_html(
+                    '',
+                    $globalParameters['sale_email'],
+                    $plugin->get_lang('bc_subject'),
+                    $messageConfirmTemplate->fetch('buycourses/view/message_confirm.tpl')
+                );
+            }
+
+            Display::addFlash(
+                Display::return_message(
+                    sprintf(
+                        $plugin->get_lang('PurchaseStatusX'),
+                        $plugin->get_lang('PendingReasonByTransfer')
+                    ),
+                    'success',
+                    false
+                )
+            );
+
+            unset($_SESSION['bc_sale_id']);
+            unset($_SESSION['bc_coupon_id']);
+            header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/course_catalog.php');
+            exit;
+        }
+
+        $form->addButton(
+            'confirm',
+            $plugin->get_lang('ConfirmOrder'),
+            'check',
+            'success',
+            'default',
+            null,
+            ['id' => 'confirm']
+        );
+        $form->addButtonCancel($plugin->get_lang('CancelOrder'), 'cancel');
+
+        $template = new Template();
+
+        if ($buyingCourse) {
+            $template->assign('course', $course);
+        } elseif ($buyingSession) {
+            $template->assign('session', $session);
+        }
+
+        $template->assign('buying_course', $buyingCourse);
+        $template->assign('buying_session', $buyingSession);
+        $template->assign('terms', $globalParameters['terms_and_conditions']);
+        $template->assign('title', $sale['product_name']);
+        $template->assign('price', $sale['price']);
+        $template->assign('currency', $sale['currency_id']);
+        $template->assign('user', $userInfo);
+        $template->assign('transfer_accounts', $transferAccounts);
+        $template->assign('form', $form->returnForm());
+        $template->assign('is_bank_transfer', true);
+
+        $content = $template->fetch('buycourses/view/subscription_process_confirm.tpl');
+
+        $template->assign('content', $content);
+        $template->display_one_col_template();
+        break;
+    case BuyCoursesPlugin::PAYMENT_TYPE_CULQI:
+        // We need to include the main online script, acording to the Culqi documentation the JS needs to be loeaded
+        // directly from the main url "https://integ-pago.culqi.com" because a local copy of this JS is not supported
+        $htmlHeadXtra[] = '<script src="//integ-pago.culqi.com/js/v1"></script>';
+
+        $buyingCourse = false;
+        $buyingSession = false;
+
+        switch ($sale['product_type']) {
+            case BuyCoursesPlugin::PRODUCT_TYPE_COURSE:
+                $buyingCourse = true;
+                $course = $plugin->getSubscriptionCourseInfo($sale['product_id'], $coupon);
+                break;
+            case BuyCoursesPlugin::PRODUCT_TYPE_SESSION:
+                $buyingSession = true;
+                $session = $plugin->getSubscriptionSessionInfo($sale['product_id'], $coupon);
+                break;
+        }
+
+        $form = new FormValidator(
+            'success',
+            'POST',
+            api_get_self(),
+            null,
+            null,
+            FormValidator::LAYOUT_INLINE
+        );
+
+        if ($form->validate()) {
+            $formValues = $form->getSubmitValues();
+
+            if (isset($formValues['cancel'])) {
+                $plugin->cancelSubscriptionSale($sale['id']);
+
+                unset($_SESSION['bc_sale_id']);
+                unset($_SESSION['bc_coupon_id']);
+
+                Display::addFlash(
+                    Display::return_message(
+                        $plugin->get_lang('OrderCanceled'),
+                        'warning',
+                        false
+                    )
+                );
+
+                header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/index.php');
+                exit;
+            }
+        }
+        $form->addButton(
+            'confirm',
+            $plugin->get_lang('ConfirmOrder'),
+            'check',
+            'success',
+            'default',
+            null,
+            ['id' => 'confirm']
+        );
+        $form->addButton(
+            'cancel',
+            $plugin->get_lang('CancelOrder'),
+            'times',
+            'danger',
+            'default',
+            null,
+            ['id' => 'cancel']
+        );
+
+        $template = new Template();
+
+        if ($buyingCourse) {
+            $template->assign('course', $course);
+        } elseif ($buyingSession) {
+            $template->assign('session', $session);
+        }
+
+        $template->assign('buying_course', $buyingCourse);
+        $template->assign('buying_session', $buyingSession);
+        $template->assign('terms', $globalParameters['terms_and_conditions']);
+        $template->assign('title', $sale['product_name']);
+        $template->assign('price', floatval($sale['price']));
+        $template->assign('currency', $plugin->getSelectedCurrency());
+        $template->assign('user', $userInfo);
+        $template->assign('sale', $sale);
+        $template->assign('form', $form->returnForm());
+        $template->assign('is_culqi_payment', true);
+        $template->assign('culqi_params', $culqiParams = $plugin->getCulqiParams());
+
+        $content = $template->fetch('buycourses/view/subscription_process_confirm.tpl');
+
+        $template->assign('content', $content);
+        $template->display_one_col_template();
+
+        break;
+    case BuyCoursesPlugin::PAYMENT_TYPE_TPV_REDSYS:
+        $tpvRedsysParams = $plugin->getTpvRedsysParams();
+
+        require_once '../resources/apiRedsys.php';
+        $tpv = new RedsysAPI();
+
+        $merchantcode = $tpvRedsysParams['merchantcode'];
+        $terminal = $tpvRedsysParams['terminal'];
+        $currency = $tpvRedsysParams['currency'];
+        $transactionType = "0";
+        $urlMerchant = api_get_path(WEB_PLUGIN_PATH).'buycourses/src/tpv_response.php';
+        $urlSuccess = api_get_path(WEB_PLUGIN_PATH).'buycourses/src/tpv_success.php';
+        $urlFailed = api_get_path(WEB_PLUGIN_PATH).'buycourses/src/tpv_error.php';
+        $order = str_pad(strval($saleId), 4, "0", STR_PAD_LEFT);
+        $amount = $sale['price'] * 100;
+        $description = $plugin->get_lang('OrderReference').": ".$sale['reference'];
+        $tpv->setParameter("DS_MERCHANT_AMOUNT", $amount);
+        $tpv->setParameter("DS_MERCHANT_ORDER", $order);
+        $tpv->setParameter("DS_MERCHANT_MERCHANTCODE", $merchantcode);
+        $tpv->setParameter("DS_MERCHANT_CURRENCY", $currency);
+        $tpv->setParameter("DS_MERCHANT_TRANSACTIONTYPE", $transactionType);
+        $tpv->setParameter("DS_MERCHANT_TERMINAL", $terminal);
+        $tpv->setParameter("DS_MERCHANT_MERCHANTURL", $urlMerchant);
+        $tpv->setParameter("DS_MERCHANT_URLOK", $urlSuccess);
+        $tpv->setParameter("DS_MERCHANT_URLKO", $urlFailed);
+        $tpv->setParameter("DS_MERCHANT_PRODUCTDESCRIPTION", $description);
+
+        $version = "HMAC_SHA256_V1";
+        $kc = $tpvRedsysParams['kc'];
+
+        $urlTpv = $tpvRedsysParams['url_redsys'];
+        $sandboxFlag = $tpvRedsysParams['sandbox'] == 1;
+        if ($sandboxFlag === true) {
+            $urlTpv = $tpvRedsysParams['url_redsys_sandbox'];
+        }
+
+        $params = $tpv->createMerchantParameters();
+        $signature = $tpv->createMerchantSignature($kc);
+
+        echo '<form name="tpv_chamilo" action="'.$urlTpv.'" method="POST">';
+        echo '<input type="hidden" name="Ds_SignatureVersion" value="'.$version.'" />';
+        echo '<input type="hidden" name="Ds_MerchantParameters" value="'.$params.'" />';
+        echo '<input type="hidden" name="Ds_Signature" value="'.$signature.'" />';
+        echo '</form>';
+
+        echo '<SCRIPT language=javascript>';
+        echo 'document.tpv_chamilo.submit();';
+        echo '</script>';
+
+        break;
+}

plugin/buycourses/src/sales_report.php

@@ -0,0 +1,216 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * List of pending payments of the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once '../config.php';
+
+api_protect_admin_script();
+
+$plugin = BuyCoursesPlugin::create();
+
+$paypalEnable = $plugin->get('paypal_enable');
+$commissionsEnable = $plugin->get('commissions_enable');
+$includeServices = $plugin->get('include_services');
+$invoicingEnable = $plugin->get('invoicing_enable') === 'true';
+
+if (isset($_GET['order'])) {
+    $sale = $plugin->getSale($_GET['order']);
+    if (empty($sale)) {
+        api_not_allowed(true);
+    }
+
+    $urlToRedirect = api_get_self().'?';
+
+    switch ($_GET['action']) {
+        case 'confirm':
+            $plugin->completeSale($sale['id']);
+            $plugin->storePayouts($sale['id']);
+            Display::addFlash(
+                $plugin->getSubscriptionSuccessMessage($sale)
+            );
+
+            $urlToRedirect .= http_build_query([
+                'status' => BuyCoursesPlugin::SALE_STATUS_COMPLETED,
+                'sale' => $sale['id'],
+            ]);
+            break;
+        case 'cancel':
+            $plugin->cancelSale($sale['id']);
+
+            Display::addFlash(
+                Display::return_message(
+                    $plugin->get_lang('OrderCanceled'),
+                    'warning'
+                )
+            );
+
+            $urlToRedirect .= http_build_query([
+                'status' => BuyCoursesPlugin::SALE_STATUS_CANCELED,
+                'sale' => $sale['id'],
+            ]);
+            break;
+    }
+
+    header("Location: $urlToRedirect");
+    exit;
+}
+
+$productTypes = $plugin->getProductTypes();
+$saleStatuses = $plugin->getSaleStatuses();
+$paymentTypes = $plugin->getPaymentTypes();
+
+$selectedFilterType = '0';
+$selectedStatus = isset($_GET['status']) ? $_GET['status'] : BuyCoursesPlugin::SALE_STATUS_PENDING;
+$selectedSale = isset($_GET['sale']) ? intval($_GET['sale']) : 0;
+$dateStart = isset($_GET['date_start']) ? $_GET['date_start'] : date('Y-m-d H:i', mktime(0, 0, 0));
+$dateEnd = isset($_GET['date_end']) ? $_GET['date_end'] : date('Y-m-d H:i', mktime(23, 59, 59));
+$searchTerm = '';
+$email = '';
+
+$form = new FormValidator('search', 'get');
+
+if ($form->validate()) {
+    $selectedFilterType = $form->getSubmitValue('filter_type');
+    $selectedStatus = $form->getSubmitValue('status');
+    $searchTerm = $form->getSubmitValue('user');
+    $dateStart = $form->getSubmitValue('date_start');
+    $dateEnd = $form->getSubmitValue('date_end');
+    $email = $form->getSubmitValue('email');
+
+    if ($selectedStatus === false) {
+        $selectedStatus = BuyCoursesPlugin::SALE_STATUS_PENDING;
+    }
+
+    if ($selectedFilterType === false) {
+        $selectedFilterType = '0';
+    }
+}
+
+$form->addRadio(
+    'filter_type',
+    get_lang('Filter'),
+    [
+        $plugin->get_lang('ByStatus'),
+        $plugin->get_lang('ByUser'),
+        $plugin->get_lang('ByDate'),
+        $plugin->get_lang('ByEmail'),
+    ]
+);
+$form->addHtml('<div id="report-by-status" '.($selectedFilterType !== '0' ? 'style="display:none"' : '').'>');
+$form->addSelect('status', $plugin->get_lang('OrderStatus'), $saleStatuses);
+$form->addHtml('</div>');
+$form->addHtml('<div id="report-by-user" '.($selectedFilterType !== '1' ? 'style="display:none"' : '').'>');
+$form->addText('user', get_lang('UserName'), false);
+$form->addHtml('</div>');
+$form->addHtml('<div id="report-by-date" '.($selectedFilterType !== '2' ? 'style="display:none"' : '').'>');
+$form->addDateRangePicker('date', get_lang('Date'), false);
+$form->addHtml('</div>');
+$form->addHtml('<div id="report-by-email" '.($selectedFilterType !== '3' ? 'style="display:none"' : '').'>');
+$form->addText('email', get_lang('Email'), false);
+$form->addHtml('</div>');
+$form->addButtonFilter(get_lang('Search'));
+$form->setDefaults([
+    'filter_type' => $selectedFilterType,
+    'status' => $selectedStatus,
+    'date_start' => $dateStart,
+    'date_end' => $dateEnd,
+    'email' => $email,
+]);
+
+switch ($selectedFilterType) {
+    case '0':
+        $sales = $plugin->getSaleListByStatus($selectedStatus);
+        break;
+    case '1':
+        $sales = $plugin->getSaleListByUser($searchTerm);
+        break;
+    case '2':
+        $sales = $plugin->getSaleListByDate($dateStart, $dateEnd);
+        break;
+    case '3':
+        $sales = $plugin->getSaleListByEmail($email);
+        break;
+}
+
+foreach ($sales as &$sale) {
+    $sale['product_type'] = $productTypes[$sale['product_type']];
+    $sale['payment_type'] = $paymentTypes[$sale['payment_type']];
+    $sale['complete_user_name'] = api_get_person_name($sale['firstname'], $sale['lastname']);
+    $sale['num_invoice'] = $plugin->getNumInvoice($sale['id'], 0);
+    $sale['total_price'] = $plugin->getPriceWithCurrencyFromIsoCode($sale['price'], $sale['iso_code']);
+    if (isset($sale['discount_amount']) && $sale['discount_amount'] != 0) {
+        $sale['total_discount'] = $plugin->getPriceWithCurrencyFromIsoCode($sale['discount_amount'], $sale['iso_code']);
+        $sale['coupon_code'] = $plugin->getSaleCouponCode($sale['id']);
+    }
+}
+
+$interbreadcrumb[] = ['url' => '../index.php', 'name' => $plugin->get_lang('plugin_title')];
+
+$htmlHeadXtra[] = api_get_css(api_get_path(WEB_PLUGIN_PATH).'buycourses/resources/css/style.css');
+$htmlHeadXtra[] = api_get_jqgrid_js();
+$htmlHeadXtra[] = BuyCoursesPlugin::getSalesReportScript($sales, $invoicingEnable);
+
+$templateName = $plugin->get_lang('SalesReport');
+$template = new Template($templateName);
+
+$toolbar = Display::url(
+    Display::returnFontAwesomeIcon('file-excel-o').
+    get_lang('GenerateReport'),
+    api_get_path(WEB_PLUGIN_PATH).'buycourses/src/export_report.php',
+    ['class' => 'btn btn-primary']
+);
+
+if ($paypalEnable === 'true' && $commissionsEnable === 'true') {
+    $toolbar .= Display::toolbarButton(
+        $plugin->get_lang('PaypalPayoutCommissions'),
+        api_get_path(WEB_PLUGIN_PATH).'buycourses/src/paypal_payout.php',
+        'paypal',
+        'primary',
+        ['title' => $plugin->get_lang('PaypalPayoutCommissions')]
+    );
+
+    $template->assign(
+        'actions',
+        Display::toolbarAction('toolbar', [$toolbar])
+    );
+}
+
+if ($commissionsEnable === 'true') {
+    $toolbar .= Display::toolbarButton(
+        $plugin->get_lang('PayoutReport'),
+        api_get_path(WEB_PLUGIN_PATH).'buycourses/src/payout_report.php',
+        'money',
+        'info',
+        ['title' => $plugin->get_lang('PayoutReport')]
+    );
+
+    $template->assign(
+        'actions',
+        Display::toolbarAction('toolbar', [$toolbar])
+    );
+}
+$template->assign(
+    'actions',
+    Display::toolbarAction('toolbar', [$toolbar])
+);
+$template->assign('form', $form->returnForm());
+$template->assign('selected_sale', $selectedSale);
+$template->assign('selected_status', $selectedStatus);
+$template->assign('services_are_included', $includeServices);
+$template->assign('sale_list', $sales);
+$template->assign('sale_status_canceled', BuyCoursesPlugin::SALE_STATUS_CANCELED);
+$template->assign('sale_status_pending', BuyCoursesPlugin::SALE_STATUS_PENDING);
+$template->assign('sale_status_completed', BuyCoursesPlugin::SALE_STATUS_COMPLETED);
+$template->assign('invoicing_enable', $invoicingEnable);
+
+$content = $template->fetch('buycourses/view/sales_report.tpl');
+
+$template->assign('header', $templateName);
+$template->assign('content', $content);
+$template->display_one_col_template();

plugin/buycourses/src/service_catalog.php

@@ -0,0 +1,101 @@
+<?php
+/**
+ * List of services.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once '../../../main/inc/global.inc.php';
+
+$plugin = BuyCoursesPlugin::create();
+$includeSessions = $plugin->get('include_sessions') === 'true';
+$includeServices = $plugin->get('include_services') === 'true';
+
+$nameFilter = null;
+$minFilter = 0;
+$maxFilter = 0;
+$appliesToFilter = '';
+
+$form = new FormValidator(
+    'search_filter_form',
+    'get',
+    null,
+    null,
+    [],
+    FormValidator::LAYOUT_INLINE
+);
+
+if ($form->validate()) {
+    $formValues = $form->getSubmitValues();
+    $nameFilter = isset($formValues['name']) ? $formValues['name'] : null;
+    $minFilter = isset($formValues['min']) ? $formValues['min'] : 0;
+    $maxFilter = isset($formValues['max']) ? $formValues['max'] : 0;
+    $appliesToFilter = isset($formValues['applies_to']) ? $formValues['applies_to'] : '';
+}
+
+$form->addHeader($plugin->get_lang('SearchFilter'));
+$form->addText('name', $plugin->get_lang('ServiceName'), false);
+$form->addElement(
+    'number',
+    'min',
+    $plugin->get_lang('MinimumPrice'),
+    ['step' => '0.01', 'min' => '0']
+);
+$form->addElement(
+    'number',
+    'max',
+    $plugin->get_lang('MaximumPrice'),
+    ['step' => '0.01', 'min' => '0']
+);
+$appliesToOptions = [
+    '' => get_lang('Any'),
+    0 => get_lang('None'),
+    1 => get_lang('User'),
+    2 => get_lang('Course'),
+    3 => get_lang('Session'),
+    4 => get_lang('TemplateTitleCertificate'),
+];
+$form->addSelect('applies_to', $plugin->get_lang('AppliesTo'), $appliesToOptions);
+$form->addHtml('<hr>');
+$form->addButtonFilter(get_lang('Search'));
+
+$pageSize = BuyCoursesPlugin::PAGINATION_PAGE_SIZE;
+$currentPage = isset($_GET['page']) ? (int) $_GET['page'] : 1;
+$first = $pageSize * ($currentPage - 1);
+$serviceList = $plugin->getCatalogServiceList($first, $pageSize, $nameFilter, $minFilter, $maxFilter, $appliesToFilter);
+$totalItems = $plugin->getCatalogServiceList($first, $pageSize, $nameFilter, $minFilter, $maxFilter, $appliesToFilter, 'count');
+$pagesCount = ceil($totalItems / $pageSize);
+$pagination = BuyCoursesPlugin::returnPagination(api_get_self(), $currentPage, $pagesCount, $totalItems);
+
+// View
+if (api_is_platform_admin()) {
+    $interbreadcrumb[] = [
+        'url' => 'list.php',
+        'name' => $plugin->get_lang('AvailableCoursesConfiguration'),
+    ];
+    $interbreadcrumb[] = [
+        'url' => 'paymentsetup.php',
+        'name' => $plugin->get_lang('PaymentsConfiguration'),
+    ];
+} else {
+    $interbreadcrumb[] = [
+        'url' => '../index.php',
+        'name' => $plugin->get_lang('UserPanel'),
+    ];
+}
+
+$templateName = $plugin->get_lang('ListOfServicesOnSale');
+$tpl = new Template($templateName);
+$tpl->assign('search_filter_form', $form->returnForm());
+$tpl->assign('showing_services', true);
+$tpl->assign('services', $serviceList);
+$tpl->assign('sessions_are_included', $includeSessions);
+$tpl->assign('services_are_included', $includeServices);
+$tpl->assign('pagination', $pagination);
+
+$content = $tpl->fetch('buycourses/view/catalog.tpl');
+
+$tpl->assign('header', $templateName);
+$tpl->assign('content', $content);
+$tpl->display_one_col_template();

plugin/buycourses/src/service_error.php

@@ -0,0 +1,35 @@
+<?php
+/* For license terms, see /license.txt */
+/**
+ * Errors management for the Buy Courses plugin - Redirects to service_catalog.php with a error msg.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+require_once '../config.php';
+
+if (isset($_SESSION['bc_service_sale_id'])) {
+    $plugin = BuyCoursesPlugin::create();
+    $serviceSaleId = $_SESSION['bc_service_sale_id'];
+    unset($_SESSION['bc_service_sale_id']);
+    $serviceSale = $plugin->getServiceSale($serviceSaleId);
+
+    $plugin->cancelServiceSale(intval($serviceSaleId));
+    Display::addFlash(
+        Display::return_message(
+            $plugin->get_lang('OrderCancelled'),
+            'error',
+            false
+        )
+    );
+
+    header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/service_catalog.php');
+    exit;
+}
+
+Display::addFlash(
+    Display::return_message($plugin->get_lang('ErrorOccurred'), 'error', false)
+);
+
+header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/service_catalog.php');
+
+exit;

plugin/buycourses/src/service_information.php

@@ -0,0 +1,42 @@
+<?php
+/* For licensing terms, see /license.txt */
+
+/**
+ * Service information page
+ * Show information about a service (for custom purposes).
+ *
+ * @author José Loguercio Silva <jose.loguercio@beeznest.com>
+ *
+ * @package chamilo.buycourses_plugin
+ */
+$cidReset = true;
+
+require_once '../../../main/inc/global.inc.php';
+
+$serviceId = isset($_GET['service_id']) ? intval($_GET['service_id']) : false;
+$htmlHeadXtra[] = '<link rel="stylesheet" type="text/css" href="'.api_get_path(
+        WEB_PLUGIN_PATH
+    ).'buycourses/resources/css/style.css"/>';
+$plugin = BuyCoursesPlugin::create();
+
+$includeServices = $plugin->get('include_services') === 'true';
+
+if (!$includeServices) {
+    api_not_allowed(true);
+}
+
+$service = $plugin->getService($serviceId);
+
+if (!$service['id']) {
+    api_not_allowed(true);
+}
+
+$template = new Template(false);
+$template->assign('pageUrl', api_get_path(WEB_PATH)."service/{$serviceId}/information/");
+$template->assign('service', $service);
+$template->assign('essence', Essence\Essence::instance());
+
+$content = $template->fetch('buycourses/view/service_information.tpl');
+
+$template->assign('content', $content);
+$template->display_one_col_template();

plugin/buycourses/src/service_panel.php

@@ -0,0 +1,74 @@
+<?php
+/**
+ * User Panel.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once '../../../main/inc/global.inc.php';
+$plugin = BuyCoursesPlugin::create();
+$includeServices = $plugin->get('include_services') === 'true';
+$includeSessions = $plugin->get('include_sessions') === 'true';
+$servicesOnly = $plugin->get('show_services_only') === 'true';
+
+$userInfo = api_get_user_info();
+
+if (!$userInfo) {
+    api_not_allowed(true);
+}
+$serviceTypes = $plugin->getServiceTypes();
+$serviceSaleStatuses['status_cancelled'] = BuyCoursesPlugin::SERVICE_STATUS_CANCELLED;
+$serviceSaleStatuses['status_pending'] = BuyCoursesPlugin::SERVICE_STATUS_PENDING;
+$serviceSaleStatuses['status_completed'] = BuyCoursesPlugin::SERVICE_STATUS_COMPLETED;
+
+$serviceSales = $plugin->getServiceSales($userInfo['user_id']);
+$saleList = [];
+
+foreach ($serviceSales as $sale) {
+    $saleList[] = [
+        'id' => $sale['id'],
+        'name' => $sale['service']['name'],
+        'service_type' => $serviceTypes[$sale['service']['applies_to']],
+        'applies_to' => $sale['service']['applies_to'],
+        'reference' => $sale['reference'],
+        'date' => api_format_date(api_get_local_time($sale['buy_date']), DATE_TIME_FORMAT_LONG_24H),
+        'date_end' => api_format_date(api_get_local_time($sale['date_end']), DATE_TIME_FORMAT_LONG_24H),
+        'currency' => $sale['currency'],
+        'price' => $sale['price'],
+        'status' => $sale['status'],
+    ];
+}
+
+$toolbar = Display::toolbarButton(
+    $plugin->get_lang('CourseListOnSale'),
+    'course_catalog.php',
+    'search-plus',
+    'primary',
+    ['title' => $plugin->get_lang('CourseListOnSale')]
+);
+
+$webPluginPath = api_get_path(WEB_PLUGIN_PATH);
+$htmlHeadXtra[] = api_get_css($webPluginPath.'buycourses/resources/css/style.css');
+$htmlHeadXtra[] = api_get_js_simple($webPluginPath.'buycourses/resources/js/modals.js');
+
+$templateName = $plugin->get_lang('TabsDashboard');
+$tpl = new Template($templateName);
+$tpl->assign('showing_courses', true);
+$tpl->assign('services_are_included', $includeServices);
+$tpl->assign('sessions_are_included', $includeSessions);
+$tpl->assign('service_sale_statuses', $serviceSaleStatuses);
+$tpl->assign('sale_list', $saleList);
+if ($servicesOnly) {
+    $tpl->assign('show_services_only', true);
+}
+
+$content = $tpl->fetch('buycourses/view/service_panel.tpl');
+
+$tpl->assign(
+    'actions',
+    Display::toolbarAction('toolbar', [$toolbar])
+);
+$tpl->assign('header', $templateName);
+$tpl->assign('content', $content);
+$tpl->display_one_col_template();

plugin/buycourses/src/service_process.php

@@ -0,0 +1,304 @@
+<?php
+/* For license terms, see /license.txt */
+
+use Chamilo\CoreBundle\Entity\Session;
+use Chamilo\CoreBundle\Entity\SessionRelCourseRelUser;
+use Chamilo\UserBundle\Entity\User;
+
+/**
+ * Process payments for the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once '../config.php';
+
+if (!isset($_REQUEST['t'], $_REQUEST['i'])) {
+    header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/service_catalog.php');
+    exit;
+}
+
+$currentUserId = api_get_user_id();
+$serviceId = (int) $_REQUEST['i'];
+$type = (int) $_REQUEST['t'];
+
+if (empty($currentUserId)) {
+    api_not_allowed(true);
+}
+$htmlHeadXtra[] = '<link rel="stylesheet" type="text/css" href="'.api_get_path(
+        WEB_PLUGIN_PATH
+    ).'buycourses/resources/css/style.css"/>';
+$em = Database::getManager();
+$plugin = BuyCoursesPlugin::create();
+$includeServices = $plugin->get('include_services');
+$additionalQueryString = '';
+if ($includeServices !== 'true') {
+    api_not_allowed(true);
+}
+
+$typeUser = $type === BuyCoursesPlugin::SERVICE_TYPE_USER;
+$typeCourse = $type === BuyCoursesPlugin::SERVICE_TYPE_COURSE;
+$typeSession = $type === BuyCoursesPlugin::SERVICE_TYPE_SESSION;
+$typeFinalLp = $type === BuyCoursesPlugin::SERVICE_TYPE_LP_FINAL_ITEM;
+$queryString = 'i='.$serviceId.'&t='.$type.$additionalQueryString;
+
+if (isset($_REQUEST['c'])) {
+    $couponCode = $_REQUEST['c'];
+    $coupon = $plugin->getCouponServiceByCode($couponCode, $_REQUEST['i']);
+}
+
+$serviceInfo = $plugin->getService($serviceId, $coupon);
+$userInfo = api_get_user_info($currentUserId);
+
+$form = new FormValidator('confirm_sale');
+$paymentTypesOptions = $plugin->getPaymentTypes(true);
+
+$form->addHtml(
+    Display::return_message(
+        $plugin->get_lang('PleaseSelectThePaymentMethodBeforeConfirmYourOrder'),
+        'info'
+    )
+);
+$form->addRadio('payment_type', null, $paymentTypesOptions);
+
+$infoRequired = false;
+if ($typeUser || $typeCourse || $typeSession || $typeFinalLp) {
+    $infoRequired = true;
+    $form->addHtml(
+        Display::return_message(
+            $plugin->get_lang('PleaseSelectTheCorrectInfoToApplyTheService'),
+            'info'
+        )
+    );
+}
+
+$selectOptions = [
+    0 => get_lang('None'),
+];
+
+if ($typeUser) {
+    $users = UserManager::getRepository()->findAll();
+    $selectOptions[$userInfo['user_id']] = api_get_person_name(
+        $userInfo['firstname'],
+        $userInfo['lastname']
+    ).' ('.get_lang('Myself').')';
+
+    if (!empty($users)) {
+        /** @var User $user */
+        foreach ($users as $user) {
+            if (intval($userInfo['user_id']) !== intval($user->getId())) {
+                $selectOptions[$user->getId()] = $user->getCompleteNameWithUsername();
+            }
+        }
+    }
+    $form->addSelect('info_select', get_lang('User'), $selectOptions);
+} elseif ($typeCourse) {
+    /** @var User $user */
+    $user = UserManager::getRepository()->find($currentUserId);
+    $courses = $user->getCourses();
+    $checker = false;
+    foreach ($courses as $course) {
+        $checker = true;
+        $selectOptions[$course->getCourse()->getId()] = $course->getCourse()->getTitle();
+    }
+    if (!$checker) {
+        $form->addHtml(
+            Display::return_message(
+                $plugin->get_lang('YouNeedToBeRegisteredInAtLeastOneCourse'),
+                'error'
+            )
+        );
+    }
+    $form->addSelect('info_select', get_lang('Course'), $selectOptions);
+} elseif ($typeSession) {
+    $sessions = [];
+    /** @var User $user */
+    $user = UserManager::getRepository()->find($currentUserId);
+    $userSubscriptions = $user->getSessionCourseSubscriptions();
+
+    /** @var SessionRelCourseRelUser $userSubscription */
+    foreach ($userSubscriptions as $userSubscription) {
+        $sessions[$userSubscription->getSession()->getId()] = $userSubscription->getSession()->getName();
+    }
+
+    $sessionsAsGeneralCoach = $user->getSessionAsGeneralCoach();
+    /** @var Session $sessionAsGeneralCoach */
+    foreach ($sessionsAsGeneralCoach as $sessionAsGeneralCoach) {
+        $sessions[$sessionAsGeneralCoach->getId()] = $sessionAsGeneralCoach->getName();
+    }
+
+    if (!$sessions) {
+        $form->addHtml(Display::return_message($plugin->get_lang('YouNeedToBeRegisteredInAtLeastOneSession'), 'error'));
+    } else {
+        $selectOptions = $sessions;
+        $form->addSelect('info_select', get_lang('Session'), $selectOptions);
+    }
+} elseif ($typeFinalLp) {
+    // We need here to check the current user courses first
+    /** @var User $user */
+    $user = UserManager::getRepository()->find($currentUserId);
+    $courses = $user->getCourses();
+    $courseLpList = [];
+    $sessionLpList = [];
+    $checker = false;
+    foreach ($courses as $course) {
+        // Now get all the courses lp's
+        $thisLpList = $em->getRepository('ChamiloCourseBundle:CLp')->findBy(['cId' => $course->getCourse()->getId()]);
+        foreach ($thisLpList as $lp) {
+            $courseLpList[$lp->getCId()] = $lp->getName().' ('.$course->getCourse()->getTitle().')';
+        }
+    }
+
+    // Here now checking the current user sessions
+    $sessions = $user->getSessionCourseSubscriptions();
+    foreach ($sessions as $session) {
+        $thisLpList = $em
+            ->getRepository('ChamiloCourseBundle:CLp')
+            ->findBy(['sessionId' => $session->getSession()->getId()]);
+
+        // Here check all the lpItems
+        foreach ($thisLpList as $lp) {
+            $thisLpItems = $em->getRepository('ChamiloCourseBundle:CLpItem')->findBy(['lpId' => $lp->getId()]);
+
+            foreach ($thisLpItems as $item) {
+                //Now only we need the final item and return the current LP
+                if ($item->getItemType() == TOOL_LP_FINAL_ITEM) {
+                    $checker = true;
+                    $sessionLpList[$lp->getCId()] = $lp->getName().' ('.$session->getSession()->getName().')';
+                }
+            }
+        }
+
+        $thisLpList = $em->getRepository('ChamiloCourseBundle:CLp')->findBy(['cId' => $session->getCourse()->getId()]);
+
+        // Here check all the lpItems
+        foreach ($thisLpList as $lp) {
+            $thisLpItems = $em->getRepository('ChamiloCourseBundle:CLpItem')->findBy(['lpId' => $lp->getId()]);
+            foreach ($thisLpItems as $item) {
+                //Now only we need the final item and return the current LP
+                if ($item->getItemType() == TOOL_LP_FINAL_ITEM) {
+                    $checker = true;
+                    $sessionLpList[$lp->getCId()] = $lp->getName().' ('.$session->getSession()->getName().')';
+                }
+            }
+        }
+    }
+
+    $selectOptions = $selectOptions + $courseLpList + $sessionLpList;
+    if (!$checker) {
+        $form->addHtml(
+            Display::return_message(
+                $plugin->get_lang('YourCoursesNeedAtLeastOneLearningPath'),
+                'error'
+            )
+        );
+    }
+    $form->addSelect('info_select', get_lang('LearningPath'), $selectOptions);
+}
+
+$form->addHidden('t', intval($_GET['t']));
+$form->addHidden('i', intval($_GET['i']));
+$form->addButton('submit', $plugin->get_lang('ConfirmOrder'), 'check', 'success');
+
+if ($form->validate()) {
+    $formValues = $form->getSubmitValues();
+
+    if (!isset($formValues['payment_type'])) {
+        Display::addFlash(
+            Display::return_message($plugin->get_lang('NeedToSelectPaymentType'), 'error', false)
+        );
+        header('Location:'.api_get_self().'?'.$queryString);
+        exit;
+    }
+
+    $infoSelected = [];
+    if ($infoRequired) {
+        if (isset($formValues['info_select'])) {
+            $infoSelected = $formValues['info_select'];
+        } else {
+            Display::addFlash(
+                Display::return_message($plugin->get_lang('AdditionalInfoRequired'), 'error', false)
+            );
+            header('Location:'.api_get_self().'?'.$queryString);
+            exit;
+        }
+    }
+
+    $serviceSaleId = $plugin->registerServiceSale(
+        $serviceId,
+        $formValues['payment_type'],
+        $infoSelected,
+        $formValues['c']
+    );
+
+    if ($serviceSaleId !== false) {
+        $_SESSION['bc_service_sale_id'] = $serviceSaleId;
+
+        if (isset($formValues['c'])) {
+            $couponSaleId = $plugin->registerCouponServiceSale($serviceSaleId, $formValues['c']);
+            if ($couponSaleId !== false) {
+                $plugin->updateCouponDelivered($formValues['c']);
+                $_SESSION['bc_coupon_id'] = $formValues['c'];
+            }
+        }
+
+        header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/service_process_confirm.php');
+    }
+    exit;
+}
+
+$formCoupon = new FormValidator('confirm_coupon');
+if ($formCoupon->validate()) {
+    $formCouponValues = $formCoupon->getSubmitValues();
+
+    if (!$formCouponValues['coupon_code']) {
+        Display::addFlash(
+            Display::return_message($plugin->get_lang('NeedToAddCouponCode'), 'error', false)
+        );
+        header('Location:'.api_get_self().'?'.$queryString);
+        exit;
+    }
+
+    $coupon = $plugin->getCouponServiceByCode($formCouponValues['coupon_code'], $formCouponValues['i']);
+
+    if ($coupon == null) {
+        Display::addFlash(
+            Display::return_message($plugin->get_lang('CouponNotValid'), 'error', false)
+        );
+        header('Location:'.api_get_self().'?'.$queryString);
+        exit;
+    }
+
+    Display::addFlash(
+        Display::return_message($plugin->get_lang('CouponRedeemed'), 'success', false)
+    );
+
+    header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/service_process.php?i='.$_REQUEST['i'].'&t='.$_REQUEST['t'].'&c='.$formCouponValues['coupon_code']);
+
+    exit;
+}
+$formCoupon->addText('coupon_code', $plugin->get_lang('CouponsCode'), true);
+$formCoupon->addHidden('t', intval($_GET['t']));
+$formCoupon->addHidden('i', intval($_GET['i']));
+if ($coupon != null) {
+    $form->addHidden('c', intval($coupon['id']));
+}
+$formCoupon->addButton('submit', $plugin->get_lang('RedeemCoupon'), 'check', 'success', 'btn-lg pull-right');
+
+// View
+$templateName = $plugin->get_lang('PaymentMethods');
+$interbreadcrumb[] = [
+    'url' => 'service_catalog.php',
+    'name' => $plugin->get_lang('ListOfServicesOnSale'),
+];
+
+$tpl = new Template($templateName);
+$tpl->assign('buying_service', true);
+$tpl->assign('service', $serviceInfo);
+$tpl->assign('user', api_get_user_info());
+$tpl->assign('form_coupon', $formCoupon->returnForm());
+$tpl->assign('form', $form->returnForm());
+$content = $tpl->fetch('buycourses/view/service_process.tpl');
+$tpl->assign('content', $content);
+$tpl->display_one_col_template();

plugin/buycourses/src/service_process_confirm.php

@@ -0,0 +1,385 @@
+<?php
+/* For license terms, see /license.txt */
+
+use ChamiloSession as Session;
+
+/**
+ * Process purchase confirmation script for the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+require_once '../config.php';
+
+$plugin = BuyCoursesPlugin::create();
+$serviceSaleId = Session::read('bc_service_sale_id');
+$couponId = Session::read('bc_coupon_id');
+
+if (empty($serviceSaleId)) {
+    api_not_allowed(true);
+}
+
+$serviceSale = $plugin->getServiceSale($serviceSaleId, $coupon);
+$userInfo = api_get_user_info($serviceSale['buyer']['id']);
+
+if (!empty($couponId)) {
+    $coupon = $plugin->getCouponService($couponId, $serviceSale['service_id']);
+    $serviceSale['item'] = $plugin->getService($serviceSale['service_id'], $coupon);
+}
+
+if (empty($serviceSale)) {
+    api_not_allowed(true);
+}
+
+$currency = $plugin->getCurrency($serviceSale['currency_id']);
+$globalParameters = $plugin->getGlobalParameters();
+
+switch ($serviceSale['payment_type']) {
+    case BuyCoursesPlugin::PAYMENT_TYPE_PAYPAL:
+        $paypalParams = $plugin->getPaypalParams();
+
+        $pruebas = $paypalParams['sandbox'] == 1;
+        $paypalUsername = $paypalParams['username'];
+        $paypalPassword = $paypalParams['password'];
+        $paypalSignature = $paypalParams['signature'];
+
+        // This var $itemPrice may be "0" if the transaction does not include a one-time purchase such as when you set up
+        // a billing agreement for a recurring payment that is not immediately charged. When the field is set to 0,
+        // purchase-specific fields are ignored. This little condition handle this fact.
+        $itemPrice = $serviceSale['price'];
+
+        $returnUrl = api_get_path(WEB_PLUGIN_PATH).'buycourses/src/service_success.php';
+        $cancelUrl = api_get_path(WEB_PLUGIN_PATH).'buycourses/src/service_error.php';
+
+        // The extra params for handle the hard job, this var is VERY IMPORTANT !!
+        $extra = '';
+        require_once 'paypalfunctions.php';
+
+        $extra .= "&L_PAYMENTREQUEST_0_NAME0={$serviceSale['service']['name']}";
+        $extra .= "&L_PAYMENTREQUEST_0_QTY0=1";
+        $extra .= "&L_PAYMENTREQUEST_0_AMT0=$itemPrice";
+
+        // Full Checkout express
+        $expressCheckout = CallShortcutExpressCheckout(
+            $itemPrice,
+            $currency['iso_code'],
+            'paypal',
+            $returnUrl,
+            $cancelUrl,
+            $extra
+        );
+
+        if ($expressCheckout['ACK'] !== 'Success') {
+            $erroMessage = vsprintf(
+                $plugin->get_lang('ErrorOccurred'),
+                [$expressCheckout['L_ERRORCODE0'], $expressCheckout['L_LONGMESSAGE0']]
+            );
+            Display::addFlash(
+                Display::return_message($erroMessage, 'error', false)
+            );
+
+            $plugin->cancelServiceSale($serviceSale['id']);
+            header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/service_catalog.php');
+            exit;
+        }
+
+        if (!empty($globalParameters['sale_email'])) {
+            $messageConfirmTemplate = new Template();
+            $messageConfirmTemplate->assign('user', $userInfo);
+            $messageConfirmTemplate->assign(
+                'sale',
+                [
+                    'date' => $serviceSale['buy_date'],
+                    'product' => $serviceSale['service']['name'],
+                    'currency' => $currency['iso_code'],
+                    'price' => $serviceSale['price'],
+                    'reference' => $serviceSale['reference'],
+                ]
+            );
+
+            api_mail_html(
+                '',
+                $globalParameters['sale_email'],
+                $plugin->get_lang('bc_subject'),
+                $messageConfirmTemplate->fetch('buycourses/view/message_confirm.tpl')
+            );
+        }
+
+        RedirectToPayPal($expressCheckout['TOKEN']);
+        break;
+    case BuyCoursesPlugin::PAYMENT_TYPE_TRANSFER:
+        $transferAccounts = $plugin->getTransferAccounts();
+
+        $form = new FormValidator(
+            'success',
+            'POST',
+            api_get_self(),
+            null,
+            null,
+            FormValidator::LAYOUT_INLINE
+        );
+
+        if ($form->validate()) {
+            $formValues = $form->getSubmitValues();
+
+            if (isset($formValues['cancel'])) {
+                $plugin->cancelServiceSale($serviceSale['id']);
+
+                unset($_SESSION['bc_service_sale_id']);
+                unset($_SESSION['bc_coupon_id']);
+                Display::addFlash(
+                    Display::return_message($plugin->get_lang('OrderCancelled'), 'error', false)
+                );
+                header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/service_catalog.php');
+                exit;
+            }
+
+            $messageTemplate = new Template();
+            $messageTemplate->assign(
+                'service_sale',
+                [
+                    'name' => $serviceSale['service']['name'],
+                    'buyer' => $serviceSale['buyer']['name'],
+                    'buy_date' => $serviceSale['buy_date'],
+                    'start_date' => $serviceSale['start_date'],
+                    'end_date' => $serviceSale['end_date'],
+                    'currency' => $currency['iso_code'],
+                    'price' => $serviceSale['price'],
+                    'reference' => $serviceSale['reference'],
+                ]
+            );
+            $messageTemplate->assign('transfer_accounts', $transferAccounts);
+            $buyer = api_get_user_info($serviceSale['buyer']['id']);
+
+            MessageManager::send_message_simple(
+                $buyer['user_id'],
+                $plugin->get_lang('bc_subject'),
+                $messageTemplate->fetch('buycourses/view/service_message_transfer.tpl')
+            );
+
+            if (!empty($globalParameters['sale_email'])) {
+                $messageConfirmTemplate = new Template();
+                $messageConfirmTemplate->assign('user', $userInfo);
+                $messageConfirmTemplate->assign(
+                    'sale',
+                    [
+                        'date' => $serviceSale['buy_date'],
+                        'product' => $serviceSale['service']['name'],
+                        'currency' => $currency['iso_code'],
+                        'price' => $serviceSale['price'],
+                        'reference' => $serviceSale['reference'],
+                    ]
+                );
+
+                api_mail_html(
+                    '',
+                    $globalParameters['sale_email'],
+                    $plugin->get_lang('bc_subject'),
+                    $messageConfirmTemplate->fetch('buycourses/view/message_confirm.tpl')
+                );
+            }
+
+            Display::addFlash(
+                Display::return_message(
+                    sprintf(
+                        $plugin->get_lang('PurchaseStatusX'),
+                        $plugin->get_lang('PendingReasonByTransfer')
+                    ),
+                    'success',
+                    false
+                )
+            );
+
+            unset($_SESSION['bc_service_sale_id']);
+            unset($_SESSION['bc_coupon_id']);
+            header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/service_catalog.php');
+            exit;
+        }
+
+        $form->addButton(
+            'confirm',
+            $plugin->get_lang('ConfirmOrder'),
+            'check',
+            'success',
+            'default',
+            null,
+            ['id' => 'confirm']
+        );
+        $form->addButton(
+            'cancel',
+            $plugin->get_lang('CancelOrder'),
+            'times',
+            'danger',
+            'default',
+            null,
+            ['id' => 'cancel']
+        );
+
+        $template = new Template();
+        $template->assign('terms', $globalParameters['terms_and_conditions']);
+        $template->assign('title', $serviceSale['service']['name']);
+        $template->assign('price', $serviceSale['price']);
+        $template->assign('currency', $serviceSale['currency_id']);
+        $template->assign('buying_service', $serviceSale);
+        $template->assign('user', $userInfo);
+        $template->assign('service', $serviceSale['service']);
+        $template->assign('service_item', $serviceSale['item']);
+        $template->assign('transfer_accounts', $transferAccounts);
+        $template->assign('form', $form->returnForm());
+
+        $content = $template->fetch('buycourses/view/process_confirm.tpl');
+
+        $template->assign('content', $content);
+        $template->display_one_col_template();
+        break;
+    case BuyCoursesPlugin::PAYMENT_TYPE_CULQI:
+        // We need to include the main online script, acording to the Culqi documentation the JS needs to be loeaded
+        // directly from the main url "https://integ-pago.culqi.com" because a local copy of this JS is not supported
+        $htmlHeadXtra[] = '<script src="//integ-pago.culqi.com/js/v1"></script>';
+
+        $form = new FormValidator(
+            'success',
+            'POST',
+            api_get_self(),
+            null,
+            null,
+            FormValidator::LAYOUT_INLINE
+        );
+
+        if ($form->validate()) {
+            $formValues = $form->getSubmitValues();
+            if (isset($formValues['cancel'])) {
+                $plugin->cancelServiceSale($serviceSale['id']);
+
+                unset($_SESSION['bc_service_sale_id']);
+                unset($_SESSION['bc_coupon_id']);
+
+                Display::addFlash(
+                    Display::return_message(
+                        $plugin->get_lang('OrderCanceled'),
+                        'warning',
+                        false
+                    )
+                );
+
+                header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/index.php');
+                exit;
+            }
+        }
+        $form->addButton(
+            'confirm',
+            $plugin->get_lang('ConfirmOrder'),
+            'check',
+            'success',
+            'default',
+            null,
+            ['id' => 'confirm']
+        );
+        $form->addButton(
+            'cancel',
+            $plugin->get_lang('CancelOrder'),
+            'times',
+            'danger',
+            'default',
+            null,
+            ['id' => 'cancel']
+        );
+
+        $template = new Template();
+        $template->assign('terms', $globalParameters['terms_and_conditions']);
+        $template->assign('title', $serviceSale['service']['name']);
+        $template->assign('price', floatval($serviceSale['price']));
+        $template->assign('currency', $plugin->getSelectedCurrency());
+        $template->assign('buying_service', $serviceSale);
+        $template->assign('user', $userInfo);
+        $template->assign('service', $serviceSale['service']);
+        $template->assign('service_item', $serviceSale['item']);
+        $template->assign('form', $form->returnForm());
+        $template->assign('is_culqi_payment', true);
+        $template->assign('culqi_params', $culqiParams = $plugin->getCulqiParams());
+        $content = $template->fetch('buycourses/view/process_confirm.tpl');
+        $template->assign('content', $content);
+        $template->display_one_col_template();
+        break;
+
+    case BuyCoursesPlugin::PAYMENT_TYPE_TPV_CECABANK:
+        $cecabankParams = $plugin->getcecabankParams();
+        $currency = $plugin->getCurrency($sale['currency_id']);
+
+        $form = new FormValidator(
+            'success',
+            'POST',
+            api_get_self(),
+            null,
+            null,
+            FormValidator::LAYOUT_INLINE
+        );
+
+        if ($form->validate()) {
+            $formValues = $form->getSubmitValues();
+
+            if (isset($formValues['cancel'])) {
+                $plugin->cancelServiceSale($sale['id']);
+
+                unset($_SESSION['bc_sale_id']);
+                unset($_SESSION['bc_coupon_id']);
+
+                header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/index.php');
+                exit;
+            }
+
+            $urlTpv = $cecabankParams['merchart_id'];
+            $currency = $plugin->getCurrency($sale['currency_id']);
+            $signature = $plugin->getCecabankSignature($sale['reference'], $sale['price']);
+
+            echo '<form name="tpv_chamilo" action="'.$urlTpv.'" method="POST">';
+            echo '<input type="hidden" name="MerchantID" value="'.$cecabankParams['merchant_id'].'" />';
+            echo '<input type="hidden" name="AcquirerBIN" value="'.$cecabankParams['acquirer_bin'].'" />';
+            echo '<input type="hidden" name="TerminalID" value="'.$cecabankParams['terminal_id'].'" />';
+            echo '<input type="hidden" name="URL_OK" value="'.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/cecabank_success.php'.'" />';
+            echo '<input type="hidden" name="URL_NOK" value="'.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/cecabank_cancel.php'.'" />';
+            echo '<input type="hidden" name="Firma" value="'.$signature.'" />';
+            echo '<input type="hidden" name="Cifrado" value="'.$cecabankParams['cypher'].'" />';
+            echo '<input type="hidden" name="Num_operacion" value="'.$sale['reference'].'" />';
+            echo '<input type="hidden" name="Importe" value="'.($sale['price'] * 100).'" />';
+            echo '<input type="hidden" name="TipoMoneda" value="'.$cecabankParams['currency'].'" />';
+            echo '<input type="hidden" name="Exponente" value="'.$cecabankParams['exponent'].'" />';
+            echo '<input type="hidden" name="Pago_soportado" value="'.$cecabankParams['supported_payment'].'" />';
+            echo '</form>';
+
+            echo '<SCRIPT language=javascript>';
+            echo 'document.tpv_chamilo.submit();';
+            echo '</script>';
+
+            exit;
+        }
+
+        $form->addButton(
+            'confirm',
+            $plugin->get_lang('ConfirmOrder'),
+            'check',
+            'success',
+            'default',
+            null,
+            ['id' => 'confirm']
+        );
+        $form->addButtonCancel($plugin->get_lang('CancelOrder'), 'cancel');
+
+        $template = new Template();
+        $template->assign('terms', $globalParameters['terms_and_conditions']);
+        $template->assign('title', $serviceSale['service']['name']);
+        $template->assign('price', $serviceSale['price']);
+        $template->assign('currency', $serviceSale['currency_id']);
+        $template->assign('buying_service', $serviceSale);
+        $template->assign('user', $userInfo);
+        $template->assign('service', $serviceSale['service']);
+        $template->assign('service_item', $serviceSale['item']);
+        $template->assign('transfer_accounts', $transferAccounts);
+        $template->assign('form', $form->returnForm());
+
+        $content = $template->fetch('buycourses/view/process_confirm.tpl');
+
+        $template->assign('content', $content);
+        $template->display_one_col_template();
+
+        break;
+}

plugin/buycourses/src/service_sales_report.php

@@ -0,0 +1,103 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * List of pending payments of the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once '../config.php';
+
+api_protect_admin_script();
+
+$plugin = BuyCoursesPlugin::create();
+
+$paypalEnable = $plugin->get('paypal_enable');
+$commissionsEnable = $plugin->get('commissions_enable');
+$includeServices = $plugin->get('include_services');
+$invoicingEnable = $plugin->get('invoicing_enable') === 'true';
+
+$saleStatuses = $plugin->getServiceSaleStatuses();
+$selectedStatus = isset($_GET['status']) ? $_GET['status'] : BuyCoursesPlugin::SALE_STATUS_PENDING;
+$form = new FormValidator('search', 'get');
+
+if ($form->validate()) {
+    $selectedStatus = $form->getSubmitValue('status');
+    if ($selectedStatus === false) {
+        $selectedStatus = BuyCoursesPlugin::SALE_STATUS_PENDING;
+    }
+}
+
+$form->addSelect('status', $plugin->get_lang('OrderStatus'), $saleStatuses, ['cols-size' => [0, 0, 0]]);
+$form->addText('user', get_lang('User'), false, ['cols-size' => [0, 0, 0]]);
+$form->addButtonSearch(get_lang('Search'), 'search');
+
+$servicesSales = $plugin->getServiceSales(0, $selectedStatus);
+
+foreach ($servicesSales as &$sale) {
+    if (isset($sale['discount_amount']) && $sale['discount_amount'] != 0) {
+        $sale['total_discount'] = $plugin->getPriceWithCurrencyFromIsoCode($sale['discount_amount'], $sale['iso_code']);
+        $sale['coupon_code'] = $plugin->getServiceSaleCouponCode($sale['id']);
+    }
+}
+
+$interbreadcrumb[] = ['url' => '../index.php', 'name' => $plugin->get_lang('plugin_title')];
+
+$webPluginPath = api_get_path(WEB_PLUGIN_PATH);
+$htmlHeadXtra[] = api_get_css($webPluginPath.'buycourses/resources/css/style.css');
+$htmlHeadXtra[] = api_get_css($webPluginPath.'buycourses/resources/js/modals.js');
+
+$templateName = $plugin->get_lang('SalesReport');
+
+$template = new Template($templateName);
+
+$toolbar = Display::url(
+    Display::returnFontAwesomeIcon('file-excel-o').
+    get_lang('GenerateReport'),
+    api_get_path(WEB_PLUGIN_PATH).'buycourses/src/export_report.php',
+    ['class' => 'btn btn-primary']
+);
+
+if ($paypalEnable == 'true' && $commissionsEnable == 'true') {
+    $toolbar .= Display::toolbarButton(
+        $plugin->get_lang('PaypalPayoutCommissions'),
+        api_get_path(WEB_PLUGIN_PATH).'buycourses/src/paypal_payout.php',
+        'paypal',
+        'primary',
+        ['title' => $plugin->get_lang('PaypalPayoutCommissions')]
+    );
+}
+
+$template->assign(
+    'actions',
+    Display::toolbarAction('toolbar', [$toolbar])
+);
+
+if ($commissionsEnable == 'true') {
+    $toolbar = Display::toolbarButton(
+        $plugin->get_lang('PayoutReport'),
+        api_get_path(WEB_PLUGIN_PATH).'buycourses/src/payout_report.php',
+        'money',
+        'info',
+        ['title' => $plugin->get_lang('PayoutReport')]
+    );
+
+    $template->assign(
+        'actions',
+        Display::toolbarAction('toolbar', [$toolbar])
+    );
+}
+$template->assign('form', $form->returnForm());
+$template->assign('showing_services', true);
+$template->assign('services_are_included', $includeServices);
+$template->assign('sale_list', $servicesSales);
+$template->assign('sale_status_cancelled', BuyCoursesPlugin::SERVICE_STATUS_CANCELLED);
+$template->assign('sale_status_pending', BuyCoursesPlugin::SERVICE_STATUS_PENDING);
+$template->assign('sale_status_completed', BuyCoursesPlugin::SERVICE_STATUS_COMPLETED);
+$template->assign('invoicing_enable', $invoicingEnable);
+$content = $template->fetch('buycourses/view/service_sales_report.tpl');
+$template->assign('content', $content);
+$template->assign('header', $templateName);
+$template->display_one_col_template();

plugin/buycourses/src/service_success.php

@@ -0,0 +1,186 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * Success page for the purchase of a service in the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+require_once '../config.php';
+
+$plugin = BuyCoursesPlugin::create();
+$paypalEnabled = $plugin->get('paypal_enable') === 'true';
+
+if (!$paypalEnabled) {
+    api_not_allowed(true);
+}
+
+$serviceSaleId = $_SESSION['bc_service_sale_id'];
+$serviceSale = $plugin->getServiceSale($serviceSaleId);
+$itemPrice = $serviceSale['price'];
+
+if (empty($serviceSale)) {
+    api_not_allowed(true);
+}
+
+$paypalParams = $plugin->getPaypalParams();
+
+$pruebas = $paypalParams['sandbox'] == 1;
+$paypalUsername = $paypalParams['username'];
+$paypalPassword = $paypalParams['password'];
+$paypalSignature = $paypalParams['signature'];
+
+require_once "paypalfunctions.php";
+
+$buyerInformation = GetShippingDetails(urlencode($_SESSION['TOKEN']));
+
+$form = new FormValidator(
+    'success',
+    'POST',
+    api_get_self(),
+    null,
+    null,
+    FormValidator::LAYOUT_INLINE
+);
+$form->addButton(
+    'confirm',
+    $plugin->get_lang('ConfirmOrder'),
+    'check',
+    'success'
+);
+$form->addButtonCancel($plugin->get_lang('CancelOrder'), 'cancel');
+
+if ($form->validate()) {
+    $formValues = $form->getSubmitValues();
+    if (isset($formValues['cancel'])) {
+        $plugin->cancelServiceSale($serviceSale['id']);
+
+        unset($_SESSION['bc_service_sale_id']);
+
+        Display::addFlash(
+            Display::return_message($plugin->get_lang('OrderCancelled'), 'error', false)
+        );
+
+        header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/service_catalog.php');
+        exit;
+    }
+
+    $confirmPayments = ConfirmPayment($itemPrice);
+    if ($confirmPayments['ACK'] !== 'Success') {
+        $erroMessage = vsprintf(
+            $plugin->get_lang('ErrorOccurred'),
+            [$expressCheckout['L_ERRORCODE0'], $confirmPayments['L_LONGMESSAGE0']]
+        );
+        Display::addFlash(
+            Display::return_message($erroMessage, 'error', false)
+        );
+        unset($_SESSION['wizard']);
+        header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/service_catalog.php');
+        exit;
+    }
+
+    switch ($confirmPayments["PAYMENTINFO_0_PAYMENTSTATUS"]) {
+        case 'Completed':
+            $serviceSaleIsCompleted = $plugin->completeServiceSale($serviceSale['id']);
+
+            if ($serviceSaleIsCompleted) {
+                Display::addFlash(
+                    Display::return_message(
+                        sprintf($plugin->get_lang('SubscriptionToServiceXSuccessful'), $serviceSale['service']['name']),
+                        'success'
+                    )
+                );
+
+                break;
+            }
+
+            Display::addFlash(
+                Display::return_message($plugin->get_lang('ErrorContactPlatformAdmin'), 'error')
+            );
+            break;
+        case 'Pending':
+            switch ($confirmPayments["PAYMENTINFO_0_PENDINGREASON"]) {
+                case 'address':
+                    $purchaseStatus = $plugin->get_lang('PendingReasonByAddress');
+                    break;
+                case 'authorization':
+                    $purchaseStatus = $plugin->get_lang('PendingReasonByAuthorization');
+                    break;
+                case 'echeck':
+                    $purchaseStatus = $plugin->get_lang('PendingReasonByEcheck');
+                    break;
+                case 'intl':
+                    $purchaseStatus = $plugin->get_lang('PendingReasonByIntl');
+                    break;
+                case 'multicurrency':
+                    $purchaseStatus = $plugin->get_lang('PendingReasonByMulticurrency');
+                    break;
+                case 'order':
+                    $purchaseStatus = $plugin->get_lang('PendingReasonByOrder');
+                    break;
+                case 'paymentreview':
+                    $purchaseStatus = $plugin->get_lang('PendingReasonByPaymentReview');
+                    break;
+                case 'regulatoryreview':
+                    $purchaseStatus = $plugin->get_lang('PendingReasonByRegulatoryReview');
+                    break;
+                case 'unilateral':
+                    $purchaseStatus = $plugin->get_lang('PendingReasonByUnilateral');
+                    break;
+                case 'upgrade':
+                    $purchaseStatus = $plugin->get_lang('PendingReasonByUpgrade');
+                    break;
+                case 'verify':
+                    $purchaseStatus = $plugin->get_lang('PendingReasonByVerify');
+                    break;
+                case 'other':
+                default:
+                    $purchaseStatus = $plugin->get_lang('PendingReasonByOther');
+                    break;
+            }
+
+            Display::addFlash(
+                Display::return_message(
+                    sprintf($plugin->get_lang('PurchaseStatusX'), $purchaseStatus),
+                    'warning',
+                    false
+                )
+            );
+            break;
+        default:
+            $plugin->cancelServiceSale(intval($serviceSale['id']));
+
+            Display::addFlash(
+                Display::return_message($plugin->get_lang('ErrorContactPlatformAdmin'), 'error')
+            );
+            break;
+    }
+
+    unset($_SESSION['bc_service_sale_id']);
+    header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/service_catalog.php');
+    exit;
+}
+
+$token = isset($_GET['token']) ? Security::remove_XSS($_GET['token']) : null;
+if (empty($token)) {
+    api_not_allowed(true);
+}
+
+$interbreadcrumb[] = [
+    "url" => "service_catalog.php",
+    "name" => $plugin->get_lang('ListOfServicesOnSale'),
+];
+
+$templateName = $plugin->get_lang('PaymentMethods');
+$tpl = new Template($templateName);
+$tpl->assign('title', $serviceSale['service']['name']);
+$tpl->assign('price', $serviceSale['price']);
+$tpl->assign('currency', $serviceSale['currency_id']);
+$tpl->assign('service', $serviceSale);
+$tpl->assign('buying_service', true);
+$tpl->assign('user', api_get_user_info($serviceSale['buyer']['id']));
+$tpl->assign('form', $form->returnForm());
+
+$content = $tpl->fetch('buycourses/view/success.tpl');
+$tpl->assign('content', $content);
+$tpl->display_one_col_template();

plugin/buycourses/src/services_add.php

@@ -0,0 +1,141 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * Create new Services for the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once '../../../main/inc/global.inc.php';
+
+$plugin = BuyCoursesPlugin::create();
+$currency = $plugin->getSelectedCurrency();
+$em = Database::getManager();
+$users = UserManager::getRepository()->findAll();
+$userOptions = [];
+if (!empty($users)) {
+    foreach ($users as $user) {
+        $userOptions[$user->getId()] = $user->getCompleteNameWithUsername();
+    }
+}
+
+api_protect_admin_script(true);
+
+$htmlHeadXtra[] = api_get_css_asset('cropper/dist/cropper.min.css');
+$htmlHeadXtra[] = api_get_asset('cropper/dist/cropper.min.js');
+
+//view
+$interbreadcrumb[] = [
+    'url' => api_get_path(WEB_PLUGIN_PATH).'buycourses/index.php',
+    'name' => $plugin->get_lang('plugin_title'),
+];
+$interbreadcrumb[] = [
+    'url' => 'list_service.php',
+    'name' => $plugin->get_lang('Services'),
+];
+
+$globalSettingsParams = $plugin->getGlobalParameters();
+
+$formDefaultValues = [
+    'price' => 0,
+    'tax_perc' => $globalSettingsParams['global_tax_perc'],
+    'duration_days' => 0,
+    'applies_to' => 0,
+    'visibility' => true,
+];
+
+$form = new FormValidator('Services');
+$form->addText('name', $plugin->get_lang('ServiceName'));
+$form->addHtmlEditor('description', $plugin->get_lang('Description'));
+$form->addElement(
+    'number',
+    'price',
+    [$plugin->get_lang('Price'), null, $currency['iso_code']],
+    ['step' => 0.01]
+);
+$form->addElement(
+    'number',
+    'tax_perc',
+    [$plugin->get_lang('TaxPerc'), $plugin->get_lang('TaxPercDescription'), '%'],
+    ['step' => 1, 'placeholder' => $globalSettingsParams['global_tax_perc'].'% '.$plugin->get_lang('ByDefault')]
+);
+$form->addElement(
+    'number',
+    'duration_days',
+    [$plugin->get_lang('Duration'), null, get_lang('Days')],
+    ['step' => 1]
+);
+$form->addElement(
+    'radio',
+    'applies_to',
+    $plugin->get_lang('AppliesTo'),
+    get_lang('None'),
+    0
+);
+$form->addElement(
+    'radio',
+    'applies_to',
+    null,
+    get_lang('User'),
+    1
+);
+$form->addElement(
+    'radio',
+    'applies_to',
+    null,
+    get_lang('Course'),
+    2
+);
+$form->addElement(
+    'radio',
+    'applies_to',
+    null,
+    get_lang('Session'),
+    3
+);
+$form->addElement(
+    'radio',
+    'applies_to',
+    null,
+    get_lang('TemplateTitleCertificate'),
+    4
+);
+$form->addSelect(
+    'owner_id',
+    get_lang('Owner'),
+    $userOptions
+);
+$form->addCheckBox('visibility', $plugin->get_lang('VisibleInCatalog'));
+$form->addFile(
+    'picture',
+    (get_lang(
+        'AddImage'
+    )),
+    ['id' => 'picture', 'class' => 'picture-form', 'crop_image' => true, 'crop_ratio' => '16 / 9']
+);
+$form->addText('video_url', get_lang('VideoUrl'), false);
+$form->addHtmlEditor('service_information', $plugin->get_lang('ServiceInformation'), false);
+$form->addButtonSave(get_lang('Add'));
+$form->setDefaults($formDefaultValues);
+
+if ($form->validate()) {
+    $values = $form->getSubmitValues();
+
+    $plugin->storeService($values);
+
+    Display::addFlash(
+        Display::return_message($plugin->get_lang('ServiceAdded'), 'success')
+    );
+
+    header('Location: list_service.php');
+    exit;
+}
+
+$templateName = $plugin->get_lang('NewService');
+$tpl = new Template($templateName);
+
+$tpl->assign('header', $templateName);
+$tpl->assign('content', $form->returnForm());
+$tpl->display_one_col_template();

plugin/buycourses/src/services_edit.php

@@ -0,0 +1,161 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * Create new Services for the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once '../../../main/inc/global.inc.php';
+
+$serviceId = isset($_REQUEST['id']) ? (int) $_REQUEST['id'] : null;
+
+if (!$serviceId) {
+    header('Location: list.php');
+    exit;
+}
+
+$plugin = BuyCoursesPlugin::create();
+$currency = $plugin->getSelectedCurrency();
+$users = UserManager::getRepository()->findAll();
+$userOptions = [];
+if (!empty($users)) {
+    foreach ($users as $user) {
+        $userOptions[$user->getId()] = $user->getCompleteNameWithUsername();
+    }
+}
+
+api_protect_admin_script(true);
+$htmlHeadXtra[] = api_get_css_asset('cropper/dist/cropper.min.css');
+$htmlHeadXtra[] = api_get_asset('cropper/dist/cropper.min.js');
+
+//view
+// breadcrumbs
+$interbreadcrumb[] = [
+    'url' => api_get_path(WEB_PLUGIN_PATH).'buycourses/index.php',
+    'name' => $plugin->get_lang('plugin_title'),
+];
+$interbreadcrumb[] = [
+    'url' => 'list_service.php',
+    'name' => $plugin->get_lang('Services'),
+];
+
+$globalSettingsParams = $plugin->getGlobalParameters();
+$service = $plugin->getService($serviceId);
+
+$formDefaultValues = [
+    'name' => $service['name'],
+    'description' => $service['description'],
+    'price' => $service['price'],
+    'tax_perc' => $service['tax_perc'],
+    'duration_days' => $service['duration_days'],
+    'owner_id' => intval($service['owner_id']),
+    'applies_to' => intval($service['applies_to']),
+    'visibility' => ($service['visibility'] == 1) ? true : false,
+    'image' => is_file(api_get_path(SYS_PLUGIN_PATH).'buycourses/uploads/services/images/simg-'.$serviceId.'.png')
+            ? api_get_path(WEB_PLUGIN_PATH).'buycourses/uploads/services/images/simg-'.$serviceId.'.png'
+            : api_get_path(WEB_CODE_PATH).'img/session_default.png',
+    'video_url' => $service['video_url'],
+    'service_information' => $service['service_information'],
+];
+
+$form = new FormValidator('Services');
+$form->addText('name', $plugin->get_lang('ServiceName'));
+$form->addHtmlEditor('description', $plugin->get_lang('Description'));
+$form->addElement(
+    'number',
+    'price',
+    [$plugin->get_lang('Price'), null, $currency['iso_code']],
+    ['step' => 0.01]
+);
+$form->addElement(
+    'number',
+    'tax_perc',
+    [$plugin->get_lang('TaxPerc'), $plugin->get_lang('TaxPercDescription'), '%'],
+    ['step' => 1, 'placeholder' => $globalSettingsParams['global_tax_perc'].'% '.$plugin->get_lang('ByDefault')]
+);
+$form->addElement(
+    'number',
+    'duration_days',
+    [$plugin->get_lang('Duration'), null, get_lang('Days')],
+    ['step' => 1]
+);
+$form->addElement(
+    'radio',
+    'applies_to',
+    $plugin->get_lang('AppliesTo'),
+    get_lang('None'),
+    0
+);
+$form->addElement(
+    'radio',
+    'applies_to',
+    null,
+    get_lang('User'),
+    1
+);
+$form->addElement(
+    'radio',
+    'applies_to',
+    null,
+    get_lang('Course'),
+    2
+);
+$form->addElement(
+    'radio',
+    'applies_to',
+    null,
+    get_lang('Session'),
+    3
+);
+$form->addElement(
+    'radio',
+    'applies_to',
+    null,
+    get_lang('TemplateTitleCertificate'),
+    4
+);
+$form->addSelect(
+    'owner_id',
+    get_lang('Owner'),
+    $userOptions
+);
+$form->addCheckBox('visibility', $plugin->get_lang('VisibleInCatalog'));
+$form->addFile(
+    'picture',
+    $formDefaultValues['image'] != '' ? get_lang('UpdateImage') : get_lang('AddImage'),
+    ['id' => 'picture', 'class' => 'picture-form', 'crop_image' => true, 'crop_ratio' => '16 / 9']
+);
+$form->addText('video_url', get_lang('VideoUrl'), false);
+$form->addHtmlEditor('service_information', $plugin->get_lang('ServiceInformation'), false);
+$form->addHidden('id', $serviceId);
+$form->addButtonSave(get_lang('Edit'));
+$form->addHtml('<br /><br /><br /><br />');
+$form->addButtonDelete($plugin->get_lang('DeleteThisService'), 'delete_service');
+$form->setDefaults($formDefaultValues);
+if ($form->validate()) {
+    $values = $form->getSubmitValues();
+
+    if (isset($values['delete_service'])) {
+        $plugin->deleteService($serviceId);
+        Display::addFlash(
+            Display::return_message($plugin->get_lang('ServiceDeleted'), 'error')
+        );
+    } else {
+        $plugin->updateService($values, $serviceId);
+        Display::addFlash(
+            Display::return_message($plugin->get_lang('ServiceEdited'), 'success')
+        );
+    }
+    header('Location: list_service.php');
+    exit;
+}
+
+$templateName = $plugin->get_lang('EditService');
+$tpl = new Template($templateName);
+
+$tpl->assign('header', $templateName);
+$tpl->assign('content', $form->returnForm());
+$tpl->display_one_col_template();

plugin/buycourses/src/session_catalog.php

@@ -0,0 +1,127 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * List of courses.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+$plugin = BuyCoursesPlugin::create();
+$includeSessions = $plugin->get('include_sessions') === 'true';
+$includeServices = $plugin->get('include_services') === 'true';
+
+if (!$includeSessions) {
+    api_not_allowed(true);
+}
+
+$nameFilter = null;
+$minFilter = 0;
+$maxFilter = 0;
+$sessionCategory = isset($_GET['session_category']) ? (int) $_GET['session_category'] : 0;
+$form = new FormValidator(
+    'search_filter_form',
+    'get',
+    null,
+    null,
+    [],
+    FormValidator::LAYOUT_INLINE
+);
+
+$form->removeAttribute('class');
+
+if ($form->validate()) {
+    $formValues = $form->getSubmitValues();
+    $nameFilter = isset($formValues['name']) ? $formValues['name'] : null;
+    $minFilter = isset($formValues['min']) ? $formValues['min'] : 0;
+    $maxFilter = isset($formValues['max']) ? $formValues['max'] : 0;
+    $sessionCategory = isset($formValues['session_category']) ? $formValues['session_category'] : $sessionCategory;
+}
+
+$form->addHeader($plugin->get_lang('SearchFilter'));
+
+$categoriesOptions = [
+    '0' => get_lang('AllCategories'),
+];
+$categoriesList = SessionManager::get_all_session_category();
+if ($categoriesList != false) {
+    foreach ($categoriesList as $categoryItem) {
+        $categoriesOptions[$categoryItem['id']] = $categoryItem['name'];
+    }
+}
+$form->addSelect(
+    'session_category',
+    get_lang('SessionCategory'),
+    $categoriesOptions,
+    [
+        'id' => 'session_category',
+    ]
+);
+
+$form->addText('name', get_lang('SessionName'), false);
+
+$form->addElement(
+    'number',
+    'min',
+    $plugin->get_lang('MinimumPrice'),
+    ['step' => '0.01', 'min' => '0']
+);
+$form->addElement(
+    'number',
+    'max',
+    $plugin->get_lang('MaximumPrice'),
+    ['step' => '0.01', 'min' => '0']
+);
+$form->addHtml('<hr>');
+$form->addButtonFilter(get_lang('Search'));
+
+$form->setDefaults(
+    [
+        'session_category' => $sessionCategory,
+    ]
+);
+$pageSize = BuyCoursesPlugin::PAGINATION_PAGE_SIZE;
+$currentPage = isset($_GET['page']) ? (int) $_GET['page'] : 1;
+$first = $pageSize * ($currentPage - 1);
+$sessionList = $plugin->getCatalogSessionList($first, $pageSize, $nameFilter, $minFilter, $maxFilter, 'all', $sessionCategory);
+$totalItems = $plugin->getCatalogSessionList($first, $pageSize, $nameFilter, $minFilter, $maxFilter, 'count', $sessionCategory);
+$pagesCount = ceil($totalItems / $pageSize);
+$pagination = BuyCoursesPlugin::returnPagination(api_get_self(), $currentPage, $pagesCount, $totalItems);
+
+// View
+if (api_is_platform_admin()) {
+    $interbreadcrumb[] = [
+        'url' => 'list.php',
+        'name' => $plugin->get_lang('AvailableCoursesConfiguration'),
+    ];
+    $interbreadcrumb[] = [
+        'url' => 'paymentsetup.php',
+        'name' => $plugin->get_lang('PaymentsConfiguration'),
+    ];
+}
+
+$templateName = $plugin->get_lang('CourseListOnSale');
+
+$htmlHeadXtra[] = api_get_css(api_get_path(WEB_PLUGIN_PATH).'buycourses/resources/css/style.css');
+
+$template = new Template($templateName);
+$template->assign('search_filter_form', $form->returnForm());
+$template->assign('sessions_are_included', $includeSessions);
+$template->assign('services_are_included', $includeServices);
+$template->assign('showing_sessions', true);
+$template->assign('sessions', $sessionList);
+$template->assign('pagination', $pagination);
+
+$countCourses = $plugin->getCatalogCourseList($first, $pageSize, $nameFilter, $minFilter, $maxFilter, 'count');
+
+$template->assign('coursesExist', $countCourses > 0);
+$template->assign('sessionExist', true);
+
+$content = $template->fetch('buycourses/view/catalog.tpl');
+
+$template->assign('header', $templateName);
+$template->assign('content', $content);
+$template->display_one_col_template();

plugin/buycourses/src/session_panel.php

@@ -0,0 +1,67 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * User Panel.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+$plugin = BuyCoursesPlugin::create();
+$includeSessions = $plugin->get('include_sessions') === 'true';
+$includeServices = $plugin->get('include_services') === 'true';
+
+$userInfo = api_get_user_info();
+
+$productTypes = $plugin->getProductTypes();
+$saleStatuses = $plugin->getSaleStatuses();
+$paymentTypes = $plugin->getPaymentTypes();
+
+$sales = $plugin->getSaleListByUserId($userInfo['id']);
+
+$saleList = [];
+
+foreach ($sales as $sale) {
+    if ($sale['product_type'] == 2) {
+        $saleList[] = [
+            'id' => $sale['id'],
+            'reference' => $sale['reference'],
+            'date' => api_format_date($sale['date'], DATE_TIME_FORMAT_LONG_24H),
+            'currency' => $sale['iso_code'],
+            'price' => $sale['price'],
+            'product_name' => $sale['product_name'],
+            'product_type' => $productTypes[$sale['product_type']],
+            'payment_type' => $paymentTypes[$sale['payment_type']],
+        ];
+    }
+}
+
+$toolbar = Display::toolbarButton(
+    $plugin->get_lang('CourseListOnSale'),
+    'course_catalog.php',
+    'search-plus',
+    'primary',
+    ['title' => $plugin->get_lang('CourseListOnSale')]
+);
+
+$htmlHeadXtra[] = api_get_css(api_get_path(WEB_PLUGIN_PATH).'buycourses/resources/css/style.css');
+
+$templateName = get_lang('TabsDashboard');
+$tpl = new Template($templateName);
+$tpl->assign('showing_courses', true);
+$tpl->assign('sessions_are_included', $includeSessions);
+$tpl->assign('services_are_included', $includeServices);
+$tpl->assign('sale_list', $saleList);
+
+$content = $tpl->fetch('buycourses/view/session_panel.tpl');
+
+$tpl->assign(
+    'actions',
+    Display::toolbarAction('toolbar', [$toolbar])
+);
+$tpl->assign('header', $templateName);
+$tpl->assign('content', $content);
+$tpl->display_one_col_template();

plugin/buycourses/src/stripe_cancel.php

@@ -0,0 +1,30 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * Success page for the purchase of a course in the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+require_once '../config.php';
+
+$plugin = BuyCoursesPlugin::create();
+$stripeEnabled = $plugin->get('stripe_enable') === 'true';
+
+if (!$stripeEnabled) {
+    api_not_allowed(true);
+}
+
+$sale = $plugin->getSale($_SESSION['bc_sale_id']);
+
+if (empty($sale)) {
+    api_not_allowed(true);
+}
+
+Display::addFlash(
+    Display::return_message($plugin->get_lang('ErrorContactPlatformAdmin'), 'error')
+);
+
+unset($_SESSION['bc_sale_id']);
+header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/course_catalog.php');
+exit;

plugin/buycourses/src/stripe_response.php

@@ -0,0 +1,65 @@
+<?php
+
+require_once '../config.php';
+
+$plugin = BuyCoursesPlugin::create();
+$stripeEnabled = $plugin->get('stripe_enable') === 'true';
+
+if (!$stripeEnabled) {
+    api_not_allowed(true);
+}
+
+$stripeParams = $plugin->getStripeParams();
+
+$payload = @file_get_contents('php://input');
+$sig_header = $_SERVER['HTTP_STRIPE_SIGNATURE'];
+$event = null;
+
+try {
+    $event = \Stripe\Webhook::constructEvent(
+        $payload, $sig_header, $stripeParams['endpoint_secret']
+    );
+} catch (\UnexpectedValueException $e) {
+    http_response_code(400);
+    exit();
+} catch (\Stripe\Exception\SignatureVerificationException $e) {
+    http_response_code(400);
+    exit();
+}
+
+switch ($event->type) {
+    case 'checkout.session.completed':
+        $checkoutSession = $event->data->object;
+
+        $sale = $plugin->getSaleFromReference($checkoutSession->id);
+
+        if (empty($sale)) {
+            api_not_allowed(true);
+        }
+
+        $buyingCourse = false;
+        $buyingSession = false;
+
+        switch ($sale['product_type']) {
+            case BuyCoursesPlugin::PRODUCT_TYPE_COURSE:
+                $buyingCourse = true;
+                $course = $plugin->getCourseInfo($sale['product_id']);
+                break;
+            case BuyCoursesPlugin::PRODUCT_TYPE_SESSION:
+                $buyingSession = true;
+                $session = $plugin->getSessionInfo($sale['product_id']);
+                break;
+        }
+
+        $saleIsCompleted = $plugin->completeSale($sale['id']);
+
+        if ($saleIsCompleted) {
+            $plugin->storePayouts($sale['id']);
+        }
+
+        // no break
+    default:
+        echo 'Received unknown event type '.$event->type;
+}
+
+http_response_code(200);

plugin/buycourses/src/stripe_success.php

@@ -0,0 +1,78 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * Success page for the purchase of a course in the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+require_once '../config.php';
+
+$plugin = BuyCoursesPlugin::create();
+$stripeEnabled = $plugin->get('stripe_enable') === 'true';
+
+if (!$stripeEnabled) {
+    api_not_allowed(true);
+}
+
+$sale = $plugin->getSale($_SESSION['bc_sale_id']);
+
+if (empty($sale)) {
+    api_not_allowed(true);
+}
+
+$userInfo = api_get_user_info($sale['user_id']);
+$currency = $plugin->getCurrency($sale['currency_id']);
+$globalParameters = $plugin->getGlobalParameters();
+
+if (!empty($globalParameters['sale_email'])) {
+    $messageConfirmBuyerTemplate = new Template();
+    $messageConfirmBuyerTemplate->assign('user', $userInfo);
+    $messageConfirmBuyerTemplate->assign(
+        'sale',
+        [
+            'date' => $sale['date'],
+            'product' => $sale['product_name'],
+            'currency' => $currency['iso_code'],
+            'price' => $sale['price'],
+            'reference' => $sale['reference'],
+        ]
+    );
+
+    api_mail_html(
+        $userInfo['complete_name'],
+        $userInfo['email'],
+        $plugin->get_lang('bc_subject'),
+        $messageConfirmBuyerTemplate->fetch('buycourses/view/message_confirm_buyer.tpl'),
+        '',
+        $globalParameters['sale_email']
+    );
+
+    $messageConfirmTemplate = new Template();
+    $messageConfirmTemplate->assign('user', $userInfo);
+    $messageConfirmTemplate->assign(
+        'sale',
+        [
+            'date' => $sale['date'],
+            'product' => $sale['product_name'],
+            'currency' => $currency['iso_code'],
+            'price' => $sale['price'],
+            'reference' => $sale['reference'],
+        ]
+    );
+
+    api_mail_html(
+        '',
+        $globalParameters['sale_email'],
+        $plugin->get_lang('bc_subject'),
+        $messageConfirmTemplate->fetch('buycourses/view/message_confirm.tpl')
+    );
+}
+
+Display::addFlash(
+    $plugin->getSubscriptionSuccessMessage($sale)
+);
+
+unset($_SESSION['bc_sale_id']);
+header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/course_catalog.php');
+exit;

plugin/buycourses/src/subscription_add.php

@@ -0,0 +1,234 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * Configuration page for subscriptions for the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+api_protect_admin_script(true);
+
+$id = isset($_REQUEST['id']) ? (int) $_REQUEST['id'] : 0;
+$type = isset($_REQUEST['type']) ? (int) $_REQUEST['type'] : 0;
+
+if (empty($id) || empty($type)) {
+    api_not_allowed();
+}
+
+$queryString = 'id='.intval($_REQUEST['id']).'&type='.intval($_REQUEST['type']);
+
+$editingCourse = $type === BuyCoursesPlugin::PRODUCT_TYPE_COURSE;
+$editingSession = $type === BuyCoursesPlugin::PRODUCT_TYPE_SESSION;
+
+$plugin = BuyCoursesPlugin::create();
+
+$includeSession = $plugin->get('include_sessions') === 'true';
+
+$entityManager = Database::getManager();
+$userRepo = UserManager::getRepository();
+$currency = $plugin->getSelectedCurrency();
+
+if (empty($currency)) {
+    Display::addFlash(
+        Display::return_message($plugin->get_lang('CurrencyIsNotConfigured'), 'error')
+    );
+}
+
+$currencyIso = null;
+
+if ($editingCourse) {
+    $course = $entityManager->find('ChamiloCoreBundle:Course', $id);
+    if (!$course) {
+        api_not_allowed(true);
+    }
+
+    $courseItem = $plugin->getCourseForConfiguration($course, $currency);
+
+    $currencyIso = $courseItem['currency'];
+    $formDefaults = [
+        'product_type' => get_lang('Course'),
+        'id' => $courseItem['course_id'],
+        'type' => BuyCoursesPlugin::PRODUCT_TYPE_COURSE,
+        'name' => $courseItem['course_title'],
+        'visible' => $courseItem['visible'],
+        'price' => $courseItem['price'],
+        'tax_perc' => $courseItem['tax_perc'],
+        'currency_id' => $currency['id'],
+    ];
+} elseif ($editingSession) {
+    if (!$includeSession) {
+        api_not_allowed(true);
+    }
+
+    $session = $entityManager->find('ChamiloCoreBundle:Session', $id);
+    if (!$session) {
+        api_not_allowed(true);
+    }
+
+    $sessionItem = $plugin->getSessionForConfiguration($session, $currency);
+
+    $currencyIso = $sessionItem['currency'];
+    $formDefaults = [
+        'product_type' => get_lang('Session'),
+        'id' => $session->getId(),
+        'type' => BuyCoursesPlugin::PRODUCT_TYPE_SESSION,
+        'name' => $sessionItem['session_name'],
+        'visible' => $sessionItem['visible'],
+        'price' => $sessionItem['price'],
+        'tax_perc' => $sessionItem['tax_perc'],
+        'currency_id' => $currency['id'],
+    ];
+} else {
+    api_not_allowed(true);
+}
+
+$globalSettingsParams = $plugin->getGlobalParameters();
+
+$form = new FormValidator('add_subscription');
+
+$form->addText('product_type', $plugin->get_lang('ProductType'), false);
+$form->addText('name', get_lang('Name'), false);
+
+$form->freeze(['product_type', 'name']);
+
+$form->addElement(
+    'number',
+    'tax_perc',
+    [$plugin->get_lang('TaxPerc'), $plugin->get_lang('TaxPercDescription'), '%'],
+    ['step' => 1, 'placeholder' => $globalSettingsParams['global_tax_perc'].'% '.$plugin->get_lang('ByDefault')]
+);
+
+$frequencies = $plugin->getFrequencies();
+
+$selectOptions = '';
+foreach ($frequencies as $key => $frequency) {
+    $selectOptions .= '<option value="'.$key.'">'.$frequency.'</option>';
+}
+
+if (empty($frequencies)) {
+    Display::addFlash(
+        Display::return_message($plugin->get_lang('FrequencyIsNotConfigured'), 'error')
+    );
+}
+
+$platformCommission = $plugin->getPlatformCommission();
+$form->addHtml(
+    '
+    <div class="form-group">
+        <div class="col-sm-11">
+            <div class="panel panel-default">
+                <div class="panel-heading">
+                    <h3 class="panel-title">'.$plugin->get_lang('FrequencyConfig').'</h3>
+                </div>
+                <div class="panel-body">
+                    <div class="form-group">
+                        <div class="col-sm-5">
+                            <div class="form-group ">
+                                <label for="duration" class="col-sm-3 control-label">
+                                '.$plugin->get_lang('Duration').'
+                                </label>
+                                <div class="col-sm-8">
+                                    <div class="dropdown bootstrap-select form-control bs3 dropup">
+                                        <select class="selectpicker form-control"
+                                            data-live-search="true" name="duration" id="duration" tabindex="null">
+                                            '.$selectOptions.'
+                                        </select>
+                                    </div>
+                                </div>
+                                <div class="col-sm-1"></div>
+                            </div>
+                            <div class="form-group ">
+                                <label for="price" class="col-sm-3 control-label">
+                                    '.$plugin->get_lang('Price').'
+                                </label>
+                                <div class="col-sm-8">
+                                    <input class="form-control" name="price" type="number" step="0.01" id="price">
+                                </div>
+                                <div class="col-sm-1">
+                                    '.$currencyIso.'
+                                </div>
+                            </div>
+                            <div class="form-group">
+                                <div class="col-sm-12">
+                                    <a class=" btn btn-primary " name="add" type="submit"><em class="fa fa-plus"></em> Add</a>
+                                </div>
+                                <div class="col-sm-2"></div>
+                            </div>
+                        </div>
+                        <div class="col-sm-7">
+                            <div class="table-responsive">
+                                <table class="table table-striped table-hover">
+                                    <thead>
+                                    <tr>
+                                        <th>'.$plugin->get_lang('Duration').'</th>
+                                        <th>'.$plugin->get_lang('Price').'</th>
+                                        <th>'.$plugin->get_lang('Actions').'</th>
+                                    </tr>
+                                    </thead>
+                                    <tbody>
+                                    </tbody>
+                                </table>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </div>
+        <div class="col-sm-2">
+        </div>
+    </div>
+    '
+);
+
+$form->addHidden('type', null);
+$form->addHidden('id', null);
+$button = $form->addButtonSave(get_lang('Save'));
+
+if (empty($currency) || empty($frequencies)) {
+    $button->setAttribute('disabled');
+}
+
+if ($form->validate()) {
+    $formValues = $form->getSubmitValues();
+    $subscription['product_id'] = $formValues['id'];
+    $subscription['product_type'] = $formValues['type'];
+    $subscription['currency_id'] = $currency['id'];
+    $subscription['tax_perc'] = $formValues['tax_perc'] != '' ? (int) $formValues['tax_perc'] : null;
+    $subscription['frequencies'] = isset($formValues['frequencies']) ? $formValues['frequencies'] : [];
+
+    $result = $plugin->addNewSubscription($subscription);
+
+    if ($result) {
+        header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/subscriptions_courses.php');
+    } else {
+        header('Location:'.api_get_self().'?'.$queryString);
+    }
+
+    exit;
+}
+
+$form->setDefaults($formDefaults);
+
+$templateName = $plugin->get_lang('SubscriptionAdd');
+$interbreadcrumb[] = [
+    'url' => 'subscriptions_courses.php',
+    'name' => get_lang('Configuration'),
+];
+$interbreadcrumb[] = [
+    'url' => 'subscriptions_courses.php',
+    'name' => $plugin->get_lang('SubscriptionList'),
+];
+
+$template = new Template($templateName);
+$template->assign('header', $templateName);
+$template->assign('items_form', $form->returnForm());
+$template->assign('currencyIso', $currencyIso);
+
+$content = $template->fetch('buycourses/view/subscription_add.tpl');
+$template->assign('content', $content);
+
+$template->display_one_col_template();

plugin/buycourses/src/subscription_course_catalog.php

@@ -0,0 +1,88 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * List of subscriptions.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+$plugin = BuyCoursesPlugin::create();
+$includeSessions = $plugin->get('include_sessions') === 'true';
+$includeServices = $plugin->get('include_services') === 'true';
+
+$nameFilter = '';
+
+$form = new FormValidator(
+    'search_filter_form',
+    'get',
+    null,
+    null,
+    [],
+    FormValidator::LAYOUT_INLINE
+);
+
+if ($form->validate()) {
+    $formValues = $form->getSubmitValues();
+    $nameFilter = isset($formValues['name']) ? $formValues['name'] : null;
+}
+
+$form->addHeader($plugin->get_lang('SearchFilter'));
+$form->addText('name', get_lang('CourseName'), false);
+$form->addHtml('<hr>');
+$form->addButtonFilter(get_lang('Search'));
+
+$pageSize = BuyCoursesPlugin::PAGINATION_PAGE_SIZE;
+$currentPage = isset($_GET['page']) ? (int) $_GET['page'] : 1;
+$first = $pageSize * ($currentPage - 1);
+$courseList = $plugin->getCatalogSubscriptionCourseList($first, $pageSize, $nameFilter);
+$totalItems = $plugin->getCatalogSubscriptionCourseList($first, $pageSize, $nameFilter, 'count');
+$pagesCount = ceil($totalItems / $pageSize);
+
+$pagination = BuyCoursesPlugin::returnPagination(api_get_self(), $currentPage, $pagesCount, $totalItems);
+
+// View
+if (api_is_platform_admin()) {
+    $interbreadcrumb[] = [
+        'url' => 'subscriptions_courses.php',
+        'name' => $plugin->get_lang('AvailableCoursesConfiguration'),
+    ];
+    $interbreadcrumb[] = [
+        'url' => 'paymentsetup.php',
+        'name' => $plugin->get_lang('PaymentsConfiguration'),
+    ];
+} else {
+    $interbreadcrumb[] = [
+        'url' => 'course_panel.php',
+        'name' => get_lang('TabsDashboard'),
+    ];
+}
+
+$htmlHeadXtra[] = api_get_css(api_get_path(WEB_PLUGIN_PATH).'buycourses/resources/css/style.css');
+
+$templateName = $plugin->get_lang('SubscriptionListOnSale');
+$tpl = new Template($templateName);
+$tpl->assign('search_filter_form', $form->returnForm());
+$tpl->assign('showing_courses', true);
+$tpl->assign('courses', $courseList);
+$tpl->assign('sessions_are_included', $includeSessions);
+$tpl->assign('pagination', $pagination);
+
+$sessionList = $plugin->getCatalogSubscriptionSessionList($first, $pageSize, $nameFilter, 'first', 0);
+$coursesExist = true;
+$sessionExist = true;
+if (count($sessionList) <= 0) {
+    $sessionExist = false;
+}
+
+$tpl->assign('coursesExist', $coursesExist);
+$tpl->assign('sessionExist', $sessionExist);
+
+$content = $tpl->fetch('buycourses/view/subscription_catalog.tpl');
+
+$tpl->assign('header', $templateName);
+$tpl->assign('content', $content);
+$tpl->display_one_col_template();

plugin/buycourses/src/subscription_process.php

@@ -0,0 +1,266 @@
+<?php
+/* For license terms, see /license.txt */
+
+use ChamiloSession as Session;
+
+/**
+ * Process payments for the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+require_once '../config.php';
+
+$currentUserId = api_get_user_id();
+
+$htmlHeadXtra[] = '<link rel="stylesheet" type="text/css" href="'.api_get_path(
+        WEB_PLUGIN_PATH
+    ).'buycourses/resources/css/style.css"/>';
+$plugin = BuyCoursesPlugin::create();
+$includeSession = $plugin->get('include_sessions') === 'true';
+$paypalEnabled = $plugin->get('paypal_enable') === 'true';
+$transferEnabled = $plugin->get('transfer_enable') === 'true';
+$culqiEnabled = $plugin->get('culqi_enable') === 'true';
+$tpvRedsysEnable = $plugin->get('tpv_redsys_enable') === 'true';
+
+if (!$paypalEnabled && !$transferEnabled && !$culqiEnabled && !$tpvRedsysEnable) {
+    api_not_allowed(true);
+}
+
+if (!isset($_REQUEST['t'], $_REQUEST['i'])) {
+    api_not_allowed(true);
+}
+
+$buyingCourse = intval($_REQUEST['t']) === BuyCoursesPlugin::PRODUCT_TYPE_COURSE;
+$buyingSession = intval($_REQUEST['t']) === BuyCoursesPlugin::PRODUCT_TYPE_SESSION;
+$queryString = 'i='.intval($_REQUEST['i']).'&t='.intval($_REQUEST['t']);
+
+if (isset($_REQUEST['c'])) {
+    $couponCode = $_REQUEST['c'];
+    if ($buyingCourse) {
+        $coupon = $plugin->getCouponByCode($couponCode, BuyCoursesPlugin::PRODUCT_TYPE_COURSE, $_REQUEST['i']);
+    } else {
+        $coupon = $plugin->getCouponByCode($couponCode, BuyCoursesPlugin::PRODUCT_TYPE_SESSION, $_REQUEST['i']);
+    }
+
+    $queryString .= 'c='.$coupon['code'];
+}
+
+if (isset($_REQUEST['d'])) {
+    $duration = $_REQUEST['d'];
+    if ($buyingCourse) {
+        $subscriptionItem = $plugin->getSubscription(BuyCoursesPlugin::PRODUCT_TYPE_COURSE, $_REQUEST['i'], $duration, $coupon);
+    } else {
+        $subscriptionItem = $plugin->getSubscription(BuyCoursesPlugin::PRODUCT_TYPE_SESSION, $_REQUEST['i'], $duration, $coupon);
+    }
+}
+
+if (empty($currentUserId)) {
+    Session::write('buy_course_redirect', api_get_self().'?'.$queryString);
+    header('Location: '.api_get_path(WEB_CODE_PATH).'auth/inscription.php');
+    exit;
+}
+
+$subscriptionItems = $plugin->getSubscriptionsItemsByProduct($_REQUEST['i'], $_REQUEST['t']);
+
+if (!isset($subscriptionItems) || empty($subscriptionItems)) {
+    api_not_allowed(true);
+}
+
+if (!isset($subscriptionItem) || empty($subscriptionItem)) {
+    $subscriptionItem = $plugin->getSubscription($subscriptionItems[0]['product_type'], $subscriptionItems[0]['product_id'], $subscriptionItems[0]['duration'], $coupon);
+}
+
+$queryString .= 'd='.intval($subscriptionItem['duration']);
+
+if ($buyingCourse) {
+    $courseInfo = $plugin->getSubscriptionCourseInfo($_REQUEST['i'], $coupon);
+    $item = $plugin->getSubscriptionItemByProduct($_REQUEST['i'], BuyCoursesPlugin::PRODUCT_TYPE_COURSE);
+} elseif ($buyingSession) {
+    $sessionInfo = $plugin->getSubscriptionSessionInfo($_REQUEST['i'], $coupon);
+    $item = $plugin->getSubscriptionItemByProduct($_REQUEST['i'], BuyCoursesPlugin::PRODUCT_TYPE_SESSION);
+}
+
+$form = new FormValidator('confirm_sale');
+if ($form->validate()) {
+    $formValues = $form->getSubmitValues();
+
+    if (!$formValues['payment_type']) {
+        Display::addFlash(
+            Display::return_message($plugin->get_lang('NeedToSelectPaymentType'), 'error', false)
+        );
+        header('Location:'.api_get_self().'?'.$queryString);
+        exit;
+    }
+
+    $saleId = $plugin->registerSubscriptionSale($item['product_id'], $item['product_type'], $formValues['payment_type'], $formValues['d'], $formValues['c']);
+
+    if ($saleId !== false) {
+        $_SESSION['bc_sale_id'] = $saleId;
+
+        if (isset($formValues['c'])) {
+            $couponSaleId = $plugin->registerCouponSubscriptionSale($saleId, $formValues['c']);
+            if ($couponSaleId !== false) {
+                $plugin->updateCouponDelivered($formValues['c']);
+                $_SESSION['bc_coupon_id'] = $formValues['c'];
+            }
+        }
+
+        header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/process_subscription_confirm.php');
+    }
+
+    exit;
+}
+
+$paymentTypesOptions = $plugin->getPaymentTypes(true);
+
+$count = count($paymentTypesOptions);
+if ($count === 0) {
+    $form->addHtml($plugin->get_lang('NoPaymentOptionAvailable'));
+    $form->addHtml('<br />');
+    $form->addHtml('<br />');
+} elseif ($count === 1) {
+    // get the only array item
+    foreach ($paymentTypesOptions as $type => $value) {
+        $form->addHtml(sprintf($plugin->get_lang('XIsOnlyPaymentMethodAvailable'), $value));
+        $form->addHtml('<br />');
+        $form->addHtml('<br />');
+        $form->addHidden('payment_type', $type);
+    }
+} else {
+    $form->addHtml(
+        Display::return_message(
+            $plugin->get_lang('PleaseSelectThePaymentMethodBeforeConfirmYourOrder'),
+            'info'
+        )
+    );
+    $form->addRadio('payment_type', null, $paymentTypesOptions);
+}
+
+$form->addHidden('t', intval($_GET['t']));
+$form->addHidden('i', intval($_GET['i']));
+if ($coupon != null) {
+    $form->addHidden('c', intval($coupon['id']));
+}
+$form->addButton('submit', $plugin->get_lang('ConfirmOrder'), 'check', 'success', 'btn-lg pull-right');
+
+$formSubscription = new FormValidator('confirm_subscription');
+if ($formSubscription->validate()) {
+    $formSubscriptionValues = $formSubscription->getSubmitValues();
+
+    if (!$formSubscriptionValues['duration']) {
+        Display::addFlash(
+            Display::return_message($plugin->get_lang('NeedToAddDuration'), 'error', false)
+        );
+        header('Location:'.api_get_self().'?'.$queryString);
+        exit;
+    }
+
+    if ($buyingCourse) {
+        $subscription = $plugin->getSubscription(BuyCoursesPlugin::PRODUCT_TYPE_COURSE, $_REQUEST['i'], $formSubscriptionValues['duration']);
+    } else {
+        $subscription = $plugin->getSubscription(BuyCoursesPlugin::PRODUCT_TYPE_SESSION, $_REQUEST['i'], $formSubscriptionValues['duration']);
+    }
+
+    if ($subscription == null) {
+        Display::addFlash(
+            Display::return_message($plugin->get_lang('SubscriptionNotValid'), 'error', false)
+        );
+        header('Location:'.api_get_self().'?'.$queryString);
+        exit;
+    }
+
+    header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/subscription_process.php?i='.$_REQUEST['i'].'&t='.$_REQUEST['t'].'&d='.$formSubscriptionValues['duration']);
+
+    exit;
+}
+
+$frequencies = $plugin->getFrequencies();
+$selectedFrequencies = [];
+
+foreach ($subscriptionItems as $si) {
+    if (isset($frequencies[$si['duration']])) {
+        $selectedFrequencies[$si['duration']] = $frequencies[$si['duration']].' - '.$si['price_formatted'].' '.$si['iso_code'];
+    }
+}
+
+$formSubscription->addRadio('duration', null, $selectedFrequencies);
+
+if (!empty($selectedFrequencies)) {
+    $formSubscriptionDefaults['duration'] = $subscriptionItem['duration'];
+    $formSubscription->setDefaults($formSubscriptionDefaults);
+}
+
+$selectedDurationName = $frequencies[$subscriptionItem['duration']];
+
+$formSubscription->addHidden('t', intval($_GET['t']));
+$formSubscription->addHidden('i', intval($_GET['i']));
+
+$form->addHidden('d', $subscriptionItem['duration']);
+
+$formCoupon = new FormValidator('confirm_coupon');
+if ($formCoupon->validate()) {
+    $formCouponValues = $formCoupon->getSubmitValues();
+
+    if (!$formCouponValues['coupon_code']) {
+        Display::addFlash(
+            Display::return_message($plugin->get_lang('NeedToAddCouponCode'), 'error', false)
+        );
+        header('Location:'.api_get_self().'?'.$queryString);
+        exit;
+    }
+
+    if ($buyingCourse) {
+        $coupon = $plugin->getCouponByCode($formCouponValues['coupon_code'], BuyCoursesPlugin::PRODUCT_TYPE_COURSE, $_REQUEST['i']);
+    } else {
+        $coupon = $plugin->getCouponByCode($formCouponValues['coupon_code'], BuyCoursesPlugin::PRODUCT_TYPE_SESSION, $_REQUEST['i']);
+    }
+
+    if ($coupon == null) {
+        Display::addFlash(
+            Display::return_message($plugin->get_lang('CouponNotValid'), 'error', false)
+        );
+        header('Location:'.api_get_self().'?'.$queryString);
+        exit;
+    }
+
+    Display::addFlash(
+        Display::return_message($plugin->get_lang('CouponRedeemed'), 'success', false)
+    );
+
+    header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/subscription_process.php?i='.$_REQUEST['i'].'&t='.$_REQUEST['t'].'&d='.$_REQUEST['d'].'&c='.$formCouponValues['coupon_code']);
+
+    exit;
+}
+$formCoupon->addText('coupon_code', $plugin->get_lang('CouponsCode'), true);
+$formCoupon->addHidden('t', intval($_GET['t']));
+$formCoupon->addHidden('i', intval($_GET['i']));
+$formCoupon->addHidden('d', $subscriptionItem['duration']);
+$formCoupon->addButton('submit', $plugin->get_lang('RedeemCoupon'), 'check', 'success', 'btn-lg pull-right');
+
+// View
+$templateName = $plugin->get_lang('PaymentMethods');
+$interbreadcrumb[] = ['url' => 'subscription_course_catalog.php', 'name' => $plugin->get_lang('CourseListOnSale')];
+
+$tpl = new Template($templateName);
+$tpl->assign('item_type', (int) $_GET['t']);
+$tpl->assign('buying_course', $buyingCourse);
+$tpl->assign('buying_session', $buyingSession);
+$tpl->assign('user', api_get_user_info());
+$tpl->assign('form_coupon', $formCoupon->returnForm());
+$tpl->assign('message_payment', $messagePayment);
+$tpl->assign('selected_duration_name', $selectedDurationName);
+$tpl->assign('form', $form->returnForm());
+$tpl->assign('form_subscription', $formSubscription->returnForm());
+
+if ($buyingCourse) {
+    $tpl->assign('course', $courseInfo);
+} elseif ($buyingSession) {
+    $tpl->assign('session', $sessionInfo);
+}
+
+$tpl->assign('subscription', $subscriptionItem);
+
+$content = $tpl->fetch('buycourses/view/subscription_process.tpl');
+
+$tpl->assign('content', $content);
+$tpl->display_one_col_template();

plugin/buycourses/src/subscription_sales_report.php

@@ -0,0 +1,201 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * List of pending subscriptions payments of the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once '../config.php';
+
+api_protect_admin_script();
+
+$plugin = BuyCoursesPlugin::create();
+
+$paypalEnable = $plugin->get('paypal_enable');
+$commissionsEnable = $plugin->get('commissions_enable');
+$includeServices = $plugin->get('include_services');
+$invoicingEnable = $plugin->get('invoicing_enable') === 'true';
+
+if (isset($_GET['order'])) {
+    $sale = $plugin->getSubscriptionSale($_GET['order']);
+
+    if (empty($sale)) {
+        api_not_allowed(true);
+    }
+
+    $urlToRedirect = api_get_self().'?';
+
+    switch ($_GET['action']) {
+        case 'confirm':
+            $plugin->completeSubscriptionSale($sale['id']);
+            $plugin->storeSubscriptionPayouts($sale['id']);
+            Display::addFlash(
+                $plugin->getSubscriptionSuccessMessage($sale)
+            );
+
+            $urlToRedirect .= http_build_query([
+                'status' => BuyCoursesPlugin::SALE_STATUS_COMPLETED,
+                'sale' => $sale['id'],
+            ]);
+            break;
+        case 'cancel':
+            $plugin->cancelSubscriptionSale($sale['id']);
+
+            Display::addFlash(
+                Display::return_message(
+                    $plugin->get_lang('OrderCanceled'),
+                    'warning'
+                )
+            );
+
+            $urlToRedirect .= http_build_query([
+                'status' => BuyCoursesPlugin::SALE_STATUS_CANCELED,
+                'sale' => $sale['id'],
+            ]);
+            break;
+    }
+
+    header("Location: $urlToRedirect");
+    exit;
+}
+
+$productTypes = $plugin->getProductTypes();
+$saleStatuses = $plugin->getSaleStatuses();
+$paymentTypes = $plugin->getPaymentTypes();
+
+$selectedFilterType = '0';
+$selectedStatus = isset($_GET['status']) ? $_GET['status'] : BuyCoursesPlugin::SALE_STATUS_PENDING;
+$selectedSale = isset($_GET['sale']) ? intval($_GET['sale']) : 0;
+$dateStart = isset($_GET['date_start']) ? $_GET['date_start'] : date('Y-m-d H:i', mktime(0, 0, 0));
+$dateEnd = isset($_GET['date_end']) ? $_GET['date_end'] : date('Y-m-d H:i', mktime(23, 59, 59));
+$searchTerm = '';
+$email = '';
+
+$form = new FormValidator('search', 'get');
+
+if ($form->validate()) {
+    $selectedFilterType = $form->getSubmitValue('filter_type');
+    $selectedStatus = $form->getSubmitValue('status');
+    $searchTerm = $form->getSubmitValue('user');
+    $dateStart = $form->getSubmitValue('date_start');
+    $dateEnd = $form->getSubmitValue('date_end');
+    $email = $form->getSubmitValue('email');
+
+    if ($selectedStatus === false) {
+        $selectedStatus = BuyCoursesPlugin::SALE_STATUS_PENDING;
+    }
+
+    if ($selectedFilterType === false) {
+        $selectedFilterType = '0';
+    }
+}
+
+$form->addRadio(
+    'filter_type',
+    get_lang('Filter'),
+    [
+        $plugin->get_lang('ByStatus'),
+        $plugin->get_lang('ByUser'),
+        $plugin->get_lang('ByDate'),
+        $plugin->get_lang('ByEmail'),
+    ]
+);
+$form->addHtml('<div id="report-by-status" '.($selectedFilterType !== '0' ? 'style="display:none"' : '').'>');
+$form->addSelect('status', $plugin->get_lang('OrderStatus'), $saleStatuses);
+$form->addHtml('</div>');
+$form->addHtml('<div id="report-by-user" '.($selectedFilterType !== '1' ? 'style="display:none"' : '').'>');
+$form->addText('user', get_lang('UserName'), false);
+$form->addHtml('</div>');
+$form->addHtml('<div id="report-by-date" '.($selectedFilterType !== '2' ? 'style="display:none"' : '').'>');
+$form->addDateRangePicker('date', get_lang('Date'), false);
+$form->addHtml('</div>');
+$form->addHtml('<div id="report-by-email" '.($selectedFilterType !== '3' ? 'style="display:none"' : '').'>');
+$form->addText('email', get_lang('Email'), false);
+$form->addHtml('</div>');
+$form->addButtonFilter(get_lang('Search'));
+$form->setDefaults([
+    'filter_type' => $selectedFilterType,
+    'status' => $selectedStatus,
+    'date_start' => $dateStart,
+    'date_end' => $dateEnd,
+    'email' => $email,
+]);
+
+switch ($selectedFilterType) {
+    case '0':
+        $sales = $plugin->getSubscriptionSaleListByStatus($selectedStatus);
+        break;
+    case '1':
+        $sales = $plugin->getSubscriptionSaleListByUser($searchTerm);
+        break;
+    case '2':
+        $sales = $plugin->getSubscriptionSaleListByDate($dateStart, $dateEnd);
+        break;
+    case '3':
+        $sales = $plugin->getSubscriptionSaleListByEmail($email);
+        break;
+}
+
+foreach ($sales as &$sale) {
+    $sale['product_type'] = $productTypes[$sale['product_type']];
+    $sale['payment_type'] = $paymentTypes[$sale['payment_type']];
+    $sale['complete_user_name'] = api_get_person_name($sale['firstname'], $sale['lastname']);
+    $sale['num_invoice'] = $plugin->getNumInvoice($sale['id'], 0);
+    $sale['total_price'] = $plugin->getPriceWithCurrencyFromIsoCode($sale['price'], $sale['iso_code']);
+    if (isset($sale['discount_amount']) && $sale['discount_amount'] != 0) {
+        $sale['total_discount'] = $plugin->getPriceWithCurrencyFromIsoCode($sale['discount_amount'], $sale['iso_code']);
+        $sale['coupon_code'] = $plugin->getSaleCouponCode($sale['id']);
+    }
+}
+
+$interbreadcrumb[] = ['url' => '../index.php', 'name' => $plugin->get_lang('plugin_title')];
+
+$htmlHeadXtra[] = api_get_css(api_get_path(WEB_PLUGIN_PATH).'buycourses/resources/css/style.css');
+
+$templateName = $plugin->get_lang('SalesReport');
+$template = new Template($templateName);
+
+$toolbar = Display::url(
+    Display::returnFontAwesomeIcon('file-excel-o').
+    get_lang('GenerateReport'),
+    api_get_path(WEB_PLUGIN_PATH).'buycourses/src/export_subscription_report.php',
+    ['class' => 'btn btn-primary']
+);
+
+if ($paypalEnable === 'true' && $commissionsEnable === 'true') {
+    $toolbar .= Display::toolbarButton(
+        $plugin->get_lang('PaypalPayoutCommissions'),
+        api_get_path(WEB_PLUGIN_PATH).'buycourses/src/paypal_payout.php',
+        'paypal',
+        'primary',
+        ['title' => $plugin->get_lang('PaypalPayoutCommissions')]
+    );
+
+    $template->assign(
+        'actions',
+        Display::toolbarAction('toolbar', [$toolbar])
+    );
+}
+
+$template->assign(
+    'actions',
+    Display::toolbarAction('toolbar', [$toolbar])
+);
+$template->assign('form', $form->returnForm());
+$template->assign('selected_sale', $selectedSale);
+$template->assign('selected_status', $selectedStatus);
+$template->assign('services_are_included', $includeServices);
+$template->assign('sale_list', $sales);
+$template->assign('sale_status_canceled', BuyCoursesPlugin::SALE_STATUS_CANCELED);
+$template->assign('sale_status_pending', BuyCoursesPlugin::SALE_STATUS_PENDING);
+$template->assign('sale_status_completed', BuyCoursesPlugin::SALE_STATUS_COMPLETED);
+$template->assign('invoicing_enable', $invoicingEnable);
+
+$content = $template->fetch('buycourses/view/subscription_sales_report.tpl');
+
+$template->assign('header', $templateName);
+$template->assign('content', $content);
+$template->display_one_col_template();

plugin/buycourses/src/subscription_session_catalog.php

@@ -0,0 +1,114 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * List of sessions.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+$cidReset = true;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+$plugin = BuyCoursesPlugin::create();
+$includeSessions = $plugin->get('include_sessions') === 'true';
+$includeServices = $plugin->get('include_services') === 'true';
+
+if (!$includeSessions) {
+    api_not_allowed(true);
+}
+
+$nameFilter = null;
+$sessionCategory = isset($_GET['session_category']) ? (int) $_GET['session_category'] : 0;
+$form = new FormValidator(
+    'search_filter_form',
+    'get',
+    null,
+    null,
+    [],
+    FormValidator::LAYOUT_INLINE
+);
+
+$form->removeAttribute('class');
+
+if ($form->validate()) {
+    $formValues = $form->getSubmitValues();
+    $nameFilter = isset($formValues['name']) ? $formValues['name'] : null;
+    $sessionCategory = isset($formValues['session_category']) ? $formValues['session_category'] : $sessionCategory;
+}
+
+$form->addHeader($plugin->get_lang('SearchFilter'));
+
+$categoriesOptions = [
+    '0' => get_lang('AllCategories'),
+];
+$categoriesList = SessionManager::get_all_session_category();
+if ($categoriesList != false) {
+    foreach ($categoriesList as $categoryItem) {
+        $categoriesOptions[$categoryItem['id']] = $categoryItem['name'];
+    }
+}
+$form->addSelect(
+    'session_category',
+    get_lang('SessionCategory'),
+    $categoriesOptions,
+    [
+        'id' => 'session_category',
+    ]
+);
+
+$form->addText('name', get_lang('SessionName'), false);
+
+$form->addHtml('<hr>');
+$form->addButtonFilter(get_lang('Search'));
+
+$form->setDefaults(
+    [
+        'session_category' => $sessionCategory,
+    ]
+);
+$pageSize = BuyCoursesPlugin::PAGINATION_PAGE_SIZE;
+$currentPage = isset($_GET['page']) ? (int) $_GET['page'] : 1;
+$first = $pageSize * ($currentPage - 1);
+$sessionList = $plugin->getCatalogSubscriptionSessionList($first, $pageSize, $nameFilter, 'all', $sessionCategory);
+$totalItems = $plugin->getCatalogSubscriptionSessionList($first, $pageSize, $nameFilter, 'count', $sessionCategory);
+$pagesCount = ceil($totalItems / $pageSize);
+$pagination = BuyCoursesPlugin::returnPagination(api_get_self(), $currentPage, $pagesCount, $totalItems);
+
+// View
+if (api_is_platform_admin()) {
+    $interbreadcrumb[] = [
+        'url' => 'subscriptions_sessions.php',
+        'name' => $plugin->get_lang('AvailableCoursesConfiguration'),
+    ];
+    $interbreadcrumb[] = [
+        'url' => 'paymentsetup.php',
+        'name' => $plugin->get_lang('PaymentsConfiguration'),
+    ];
+}
+
+$templateName = $plugin->get_lang('CourseListOnSale');
+
+$htmlHeadXtra[] = api_get_css(api_get_path(WEB_PLUGIN_PATH).'buycourses/resources/css/style.css');
+
+$template = new Template($templateName);
+$template->assign('search_filter_form', $form->returnForm());
+$template->assign('sessions_are_included', $includeSessions);
+$template->assign('showing_sessions', true);
+$template->assign('sessions', $sessionList);
+$template->assign('pagination', $pagination);
+
+$courseList = $plugin->getCatalogSubscriptionCourseList($first, $pageSize, $nameFilter);
+$coursesExist = true;
+$sessionExist = true;
+if (count($courseList) <= 0) {
+    $coursesExist = false;
+}
+$template->assign('coursesExist', $coursesExist);
+$template->assign('sessionExist', $sessionExist);
+
+$content = $template->fetch('buycourses/view/subscription_catalog.tpl');
+
+$template->assign('header', $templateName);
+$template->assign('content', $content);
+$template->display_one_col_template();

plugin/buycourses/src/subscriptions_courses.php

@@ -0,0 +1,97 @@
+<?php
+/* For license terms, see /license.txt */
+/**
+ * Configuration script for the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+
+use Doctrine\ORM\Tools\Pagination\Paginator;
+
+$cidReset = true;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+$plugin = BuyCoursesPlugin::create();
+$includeSession = $plugin->get('include_sessions') === 'true';
+$taxEnable = $plugin->get('tax_enable') === 'true';
+
+api_protect_admin_script(true);
+
+Display::addFlash(
+    Display::return_message(
+        get_lang('Info').' - '.$plugin->get_lang('CoursesInSessionsDoesntDisplayHere'),
+        'info'
+    )
+);
+
+$pageSize = BuyCoursesPlugin::PAGINATION_PAGE_SIZE;
+$type = isset($_GET['type']) ? (int) $_GET['type'] : BuyCoursesPlugin::PRODUCT_TYPE_COURSE;
+$currentPage = isset($_GET['page']) ? (int) $_GET['page'] : 1;
+$first = $pageSize * ($currentPage - 1);
+
+$qb = $plugin->getCourseList($first, $pageSize);
+$query = $qb->getQuery();
+$courses = new Paginator($query, $fetchJoinCollection = true);
+foreach ($courses as $course) {
+    $item = $plugin->getSubscriptionItemByProduct($course->getId(), BuyCoursesPlugin::PRODUCT_TYPE_COURSE);
+    $course->buyCourseData = [];
+    if ($item !== false) {
+        $course->buyCourseData = $item;
+    }
+}
+
+$totalItems = count($courses);
+$pagesCount = ceil($totalItems / $pageSize);
+
+$pagination = BuyCoursesPlugin::returnPagination(
+    api_get_self(),
+    $currentPage,
+    $pagesCount,
+    $totalItems,
+    ['type' => $type]
+);
+
+// breadcrumbs
+$interbreadcrumb[] = [
+    'url' => api_get_path(WEB_PLUGIN_PATH).'buycourses/index.php',
+    'name' => $plugin->get_lang('plugin_title'),
+];
+
+$templateName = $plugin->get_lang('AvailableCourses');
+
+$htmlHeadXtra[] = api_get_css(api_get_path(WEB_PLUGIN_PATH).'buycourses/resources/css/style.css');
+
+$tpl = new Template($templateName);
+
+$toolbar = Display::url(
+    Display::returnFontAwesomeIcon('fa-calendar-alt').
+    $plugin->get_lang('ConfigureSubscriptionsFrequencies'),
+    api_get_path(WEB_PLUGIN_PATH).'buycourses/src/configure_frequency.php',
+    ['class' => 'btn btn-primary']
+);
+
+$tpl->assign(
+    'actions',
+    Display::toolbarAction('toolbar', [$toolbar])
+);
+
+$tpl->assign('product_type_course', BuyCoursesPlugin::PRODUCT_TYPE_COURSE);
+$tpl->assign('product_type_session', BuyCoursesPlugin::PRODUCT_TYPE_SESSION);
+$tpl->assign('courses', $courses);
+$tpl->assign('course_pagination', $pagination);
+$tpl->assign('sessions_are_included', $includeSession);
+$tpl->assign('tax_enable', $taxEnable);
+
+if ($taxEnable) {
+    $globalParameters = $plugin->getGlobalParameters();
+    $tpl->assign('global_tax_perc', $globalParameters['global_tax_perc']);
+    $tpl->assign('tax_applies_to', $globalParameters['tax_applies_to']);
+    $tpl->assign('tax_name', $globalParameters['tax_name']);
+}
+
+$content = $tpl->fetch('buycourses/view/subscriptions.tpl');
+
+$tpl->assign('header', $templateName);
+$tpl->assign('content', $content);
+$tpl->display_one_col_template();

plugin/buycourses/src/subscriptions_sessions.php

@@ -0,0 +1,101 @@
+<?php
+/* For license terms, see /license.txt */
+/**
+ * Configuration script for the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+use Doctrine\ORM\Tools\Pagination\Paginator;
+
+$cidReset = true;
+
+require_once __DIR__.'/../../../main/inc/global.inc.php';
+
+$plugin = BuyCoursesPlugin::create();
+$includeSession = $plugin->get('include_sessions') === 'true';
+
+if (!$includeSession) {
+    api_not_allowed(true);
+}
+$includeServices = $plugin->get('include_services') === 'true';
+$taxEnable = $plugin->get('tax_enable') === 'true';
+
+api_protect_admin_script(true);
+
+Display::addFlash(
+    Display::return_message(
+        get_lang('Info').' - '.$plugin->get_lang('CoursesInSessionsDoesntDisplayHere'),
+        'info'
+    )
+);
+
+$pageSize = BuyCoursesPlugin::PAGINATION_PAGE_SIZE;
+$currentPage = isset($_GET['page']) ? (int) $_GET['page'] : 1;
+$first = $pageSize * ($currentPage - 1);
+
+// breadcrumbs
+$interbreadcrumb[] = [
+    'url' => api_get_path(WEB_PLUGIN_PATH).'buycourses/index.php',
+    'name' => $plugin->get_lang('plugin_title'),
+];
+
+$htmlHeadXtra[] = api_get_css(api_get_path(WEB_PLUGIN_PATH).'buycourses/resources/css/style.css');
+
+$templateName = $plugin->get_lang('AvailableCourses');
+
+$tpl = new Template($templateName);
+
+$toolbar = Display::url(
+    Display::returnFontAwesomeIcon('fa-calendar-alt').
+    $plugin->get_lang('ConfigureSubscriptionsFrequencies'),
+    api_get_path(WEB_PLUGIN_PATH).'buycourses/src/configure_frequency.php',
+    ['class' => 'btn btn-primary']
+);
+
+$tpl->assign(
+    'actions',
+    Display::toolbarAction('toolbar', [$toolbar])
+);
+
+$tpl->assign('product_type_course', BuyCoursesPlugin::PRODUCT_TYPE_COURSE);
+$tpl->assign('product_type_session', BuyCoursesPlugin::PRODUCT_TYPE_SESSION);
+$tpl->assign('sessions_are_included', $includeSession);
+$tpl->assign('services_are_included', $includeServices);
+$tpl->assign('tax_enable', $taxEnable);
+
+$query = CoursesAndSessionsCatalog::browseSessions(null, ['start' => $first, 'length' => $pageSize], true);
+$sessions = new Paginator($query, $fetchJoinCollection = true);
+foreach ($sessions as $session) {
+    $item = $plugin->getSubscriptionItemByProduct($session->getId(), BuyCoursesPlugin::PRODUCT_TYPE_SESSION);
+    $session->buyCourseData = [];
+    if ($item !== false) {
+        $session->buyCourseData = $item;
+    }
+}
+
+$totalItems = count($sessions);
+$pagesCount = ceil($totalItems / $pageSize);
+
+$pagination = BuyCoursesPlugin::returnPagination(
+    api_get_self(),
+    $currentPage,
+    $pagesCount,
+    $totalItems,
+    ['type' => BuyCoursesPlugin::PRODUCT_TYPE_SESSION]
+);
+
+$tpl->assign('sessions', $sessions);
+$tpl->assign('session_pagination', $pagination);
+
+if ($taxEnable) {
+    $globalParameters = $plugin->getGlobalParameters();
+    $tpl->assign('global_tax_perc', $globalParameters['global_tax_perc']);
+    $tpl->assign('tax_applies_to', $globalParameters['tax_applies_to']);
+    $tpl->assign('tax_name', $globalParameters['tax_name']);
+}
+
+$content = $tpl->fetch('buycourses/view/subscriptions.tpl');
+
+$tpl->assign('header', $templateName);
+$tpl->assign('content', $content);
+$tpl->display_one_col_template();

plugin/buycourses/src/success.php

@@ -0,0 +1,200 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * Success page for the purchase of a course in the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+require_once '../config.php';
+
+$plugin = BuyCoursesPlugin::create();
+$paypalEnabled = $plugin->get('paypal_enable') === 'true';
+
+if (!$paypalEnabled) {
+    api_not_allowed(true);
+}
+
+$sale = $plugin->getSale($_SESSION['bc_sale_id']);
+
+if (empty($sale)) {
+    api_not_allowed(true);
+}
+
+$buyingCourse = false;
+$buyingSession = false;
+
+switch ($sale['product_type']) {
+    case BuyCoursesPlugin::PRODUCT_TYPE_COURSE:
+        $buyingCourse = true;
+        $course = $plugin->getCourseInfo($sale['product_id']);
+        break;
+    case BuyCoursesPlugin::PRODUCT_TYPE_SESSION:
+        $buyingSession = true;
+        $session = $plugin->getSessionInfo($sale['product_id']);
+        break;
+}
+
+$paypalParams = $plugin->getPaypalParams();
+$pruebas = $paypalParams['sandbox'] == 1;
+$paypalUsername = $paypalParams['username'];
+$paypalPassword = $paypalParams['password'];
+$paypalSignature = $paypalParams['signature'];
+
+require_once "paypalfunctions.php";
+
+$form = new FormValidator(
+    'success',
+    'POST',
+    api_get_self(),
+    null,
+    null,
+    FormValidator::LAYOUT_INLINE
+);
+$form->addButton('confirm', $plugin->get_lang('ConfirmOrder'), 'check', 'success');
+$form->addButtonCancel($plugin->get_lang('CancelOrder'), 'cancel');
+
+if ($form->validate()) {
+    $formValues = $form->getSubmitValues();
+    if (isset($formValues['cancel'])) {
+        $plugin->cancelSale($sale['id']);
+        unset($_SESSION['bc_sale_id']);
+        header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/index.php');
+        exit;
+    }
+
+    $confirmPayments = ConfirmPayment($sale['price']);
+
+    if ($confirmPayments['ACK'] !== 'Success') {
+        $erroMessage = vsprintf(
+            $plugin->get_lang('ErrorOccurred'),
+            [$expressCheckout['L_ERRORCODE0'], $confirmPayments['L_LONGMESSAGE0']]
+        );
+        Display::addFlash(
+            Display::return_message($erroMessage, 'error', false)
+        );
+        header('Location: ../index.php');
+        exit;
+    }
+
+    $transactionId = $confirmPayments['PAYMENTINFO_0_TRANSACTIONID'];
+    $transactionType = $confirmPayments['PAYMENTINFO_0_TRANSACTIONTYPE'];
+
+    switch ($confirmPayments['PAYMENTINFO_0_PAYMENTSTATUS']) {
+        case 'Completed':
+            $saleIsCompleted = $plugin->completeSale($sale['id']);
+            if ($saleIsCompleted) {
+                Display::addFlash(
+                    $plugin->getSubscriptionSuccessMessage($sale)
+                );
+                $plugin->storePayouts($sale['id']);
+                break;
+            }
+
+            Display::addFlash(
+                Display::return_message($plugin->get_lang('ErrorContactPlatformAdmin'), 'error')
+            );
+            break;
+        case 'Pending':
+            switch ($confirmPayments["PAYMENTINFO_0_PENDINGREASON"]) {
+                case 'address':
+                    $purchaseStatus = $plugin->get_lang('PendingReasonByAddress');
+                    break;
+                case 'authorization':
+                    $purchaseStatus = $plugin->get_lang('PendingReasonByAuthorization');
+                    break;
+                case 'echeck':
+                    $purchaseStatus = $plugin->get_lang('PendingReasonByEcheck');
+                    break;
+                case 'intl':
+                    $purchaseStatus = $plugin->get_lang('PendingReasonByIntl');
+                    break;
+                case 'multicurrency':
+                    $purchaseStatus = $plugin->get_lang('PendingReasonByMulticurrency');
+                    break;
+                case 'order':
+                    $purchaseStatus = $plugin->get_lang('PendingReasonByOrder');
+                    break;
+                case 'paymentreview':
+                    $purchaseStatus = $plugin->get_lang('PendingReasonByPaymentReview');
+                    break;
+                case 'regulatoryreview':
+                    $purchaseStatus = $plugin->get_lang('PendingReasonByRegulatoryReview');
+                    break;
+                case 'unilateral':
+                    $purchaseStatus = $plugin->get_lang('PendingReasonByUnilateral');
+                    break;
+                case 'upgrade':
+                    $purchaseStatus = $plugin->get_lang('PendingReasonByUpgrade');
+                    break;
+                case 'verify':
+                    $purchaseStatus = $plugin->get_lang('PendingReasonByVerify');
+                    break;
+                case 'other':
+                default:
+                    $purchaseStatus = $plugin->get_lang('PendingReasonByOther');
+                    break;
+            }
+
+            Display::addFlash(
+                Display::return_message(
+                    sprintf($plugin->get_lang('PurchaseStatusX'), $purchaseStatus),
+                    'warning',
+                    false
+                )
+            );
+            break;
+        default:
+            Display::addFlash(
+                Display::return_message($plugin->get_lang('ErrorContactPlatformAdmin'), 'error')
+            );
+            break;
+    }
+
+    unset($_SESSION['bc_sale_id']);
+    header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/course_catalog.php');
+    exit;
+}
+
+$token = isset($_GET['token']) ? $_GET['token'] : null;
+
+if (empty($token)) {
+    api_not_allowed(true);
+}
+
+$shippingDetails = GetShippingDetails($token);
+
+if ($shippingDetails['ACK'] !== 'Success') {
+    $erroMessage = vsprintf(
+        $plugin->get_lang('ErrorOccurred'),
+        [$expressCheckout['L_ERRORCODE0'], $shippingDetails['L_LONGMESSAGE0']]
+    );
+    Display::addFlash(
+        Display::return_message($erroMessage, 'error', false)
+    );
+    header('Location: ../index.php');
+    exit;
+}
+
+$interbreadcrumb[] = ["url" => "course_catalog.php", "name" => $plugin->get_lang('CourseListOnSale')];
+
+$templateName = $plugin->get_lang('PaymentMethods');
+$tpl = new Template($templateName);
+
+if ($buyingCourse) {
+    $tpl->assign('course', $course);
+} elseif ($buyingSession) {
+    $tpl->assign('session', $session);
+}
+
+$tpl->assign('buying_course', $buyingCourse);
+$tpl->assign('buying_session', $buyingSession);
+$tpl->assign('title', $sale['product_name']);
+$tpl->assign('price', $sale['price']);
+$tpl->assign('currency', $sale['currency_id']);
+$tpl->assign('user', api_get_user_info($sale['user_id']));
+$tpl->assign('form', $form->returnForm());
+
+$content = $tpl->fetch('buycourses/view/success.tpl');
+$tpl->assign('content', $content);
+$tpl->display_one_col_template();

plugin/buycourses/src/tpv_error.php

@@ -0,0 +1,30 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * Success page for the purchase of a course in the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+require_once '../config.php';
+
+$plugin = BuyCoursesPlugin::create();
+$tpvRedsysEnabled = $plugin->get('tpv_redsys_enable') === 'true';
+
+if (!$tpvRedsysEnabled) {
+    api_not_allowed(true);
+}
+
+$sale = $plugin->getSale($_SESSION['bc_sale_id']);
+
+if (empty($sale)) {
+    api_not_allowed(true);
+}
+
+Display::addFlash(
+    Display::return_message($plugin->get_lang('ErrorContactPlatformAdmin'), 'error')
+);
+
+unset($_SESSION['bc_sale_id']);
+header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/course_catalog.php');
+exit;

plugin/buycourses/src/tpv_response.php

@@ -0,0 +1,68 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * Success page for the purchase of a course in the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+require_once '../config.php';
+
+$plugin = BuyCoursesPlugin::create();
+$tpvRedsysEnabled = $plugin->get('tpv_redsys_enable') === 'true';
+
+if (!$tpvRedsysEnabled) {
+    api_not_allowed(true);
+}
+
+$tpvRedsysParams = $plugin->getTpvRedsysParams();
+
+$version = $_POST['Ds_SignatureVersion'];
+$params = $_POST["Ds_MerchantParameters"];
+$signatureReceived = $_POST['Ds_Signature'];
+
+require_once '../resources/apiRedsys.php';
+$tpv = new RedsysAPI();
+
+$decodec = $tpv->decodeMerchantParameters($params);
+$kc = $tpvRedsysParams['kc'];
+$signature = $tpv->createMerchantSignatureNotif($kc, $params);
+
+if ($signature === $signatureReceived) {
+    $saleId = (int) $tpv->getParameter("Ds_Order");
+    $response = $tpv->getParameter("Ds_Response");
+
+    // other fields available
+    // $Ds_Amount=$miObj->getParameter("Ds_Amount");
+    // $Ds_MerchantCode=$miObj->getParameter("Ds_MerchantCode");
+    // $Ds_TransactionType=$miObj->getParameter("Ds_TransactionType");
+    // $Ds_MerchantData=$miObj->getParameter("Ds_MerchantData");
+    // $Ds_Date=$miObj->getParameter("Ds_Date");
+    // $Ds_Hour=$miObj->getParameter("Ds_Hour");
+
+    $sale = $plugin->getSale($saleId);
+    if (empty($sale)) {
+        api_not_allowed(true);
+    }
+
+    $buyingCourse = false;
+    $buyingSession = false;
+
+    switch ($sale['product_type']) {
+        case BuyCoursesPlugin::PRODUCT_TYPE_COURSE:
+            $buyingCourse = true;
+            $course = $plugin->getCourseInfo($sale['product_id']);
+            break;
+        case BuyCoursesPlugin::PRODUCT_TYPE_SESSION:
+            $buyingSession = true;
+            $session = $plugin->getSessionInfo($sale['product_id']);
+            break;
+    }
+
+    if ($response == "0000") {
+        $saleIsCompleted = $plugin->completeSale($sale['id']);
+        if ($saleIsCompleted) {
+            $plugin->storePayouts($sale['id']);
+        }
+    }
+}

plugin/buycourses/src/tpv_success.php

@@ -0,0 +1,31 @@
+<?php
+/* For license terms, see /license.txt */
+
+/**
+ * Success page for the purchase of a course in the Buy Courses plugin.
+ *
+ * @package chamilo.plugin.buycourses
+ */
+require_once '../config.php';
+
+$plugin = BuyCoursesPlugin::create();
+$tpvRedsysEnabled = $plugin->get('tpv_redsys_enable') === 'true';
+
+if (!$tpvRedsysEnabled) {
+    api_not_allowed(true);
+}
+
+$sale = $plugin->getSale($_SESSION['bc_sale_id']);
+
+if (empty($sale)) {
+    api_not_allowed(true);
+}
+
+Display::addFlash(
+    $plugin->getSubscriptionSuccessMessage($sale)
+);
+//$plugin->storePayouts($sale['id']);
+
+unset($_SESSION['bc_sale_id']);
+header('Location: '.api_get_path(WEB_PLUGIN_PATH).'buycourses/src/course_catalog.php');
+exit;