upgrade

plugin/ai_helper/src/deepseek/DeepSeek.php

@@ -0,0 +1,91 @@
+<?php
+/* For license terms, see /license.txt */
+
+require_once 'DeepSeekUrl.php';
+
+class DeepSeek
+{
+    private $apiKey;
+    private $headers;
+
+    public function __construct(string $apiKey)
+    {
+        $this->apiKey = $apiKey;
+        $this->headers = [
+            'Content-Type: application/json',
+            "Authorization: Bearer {$this->apiKey}",
+        ];
+    }
+
+    /**
+     * Generate questions using the DeepSeek API.
+     *
+     * @param array $payload Data to send to the API
+     *
+     * @throws Exception If an error occurs during the request
+     *
+     * @return string Decoded response from the API
+     */
+    public function generateQuestions(array $payload): string
+    {
+        $url = DeepSeekUrl::completionsUrl();
+        $response = $this->sendRequest($url, 'POST', $payload);
+
+        if (empty($response)) {
+            throw new Exception('The DeepSeek API returned no response.');
+        }
+
+        $result = json_decode($response, true);
+
+        // Validate errors returned by the API
+        if (isset($result['error'])) {
+            throw new Exception("DeepSeek API Error: {$result['error']['message']}");
+        }
+
+        // Ensure the response contains the expected "choices" field
+        if (!isset($result['choices'][0]['message']['content'])) {
+            throw new Exception('Unexpected response format from the DeepSeek API.');
+        }
+
+        return $result['choices'][0]['message']['content'];
+    }
+
+    /**
+     * Send a request to the DeepSeek API.
+     *
+     * @param string $url    Endpoint to send the request to
+     * @param string $method HTTP method (e.g., GET, POST)
+     * @param array  $data   Data to send as JSON
+     *
+     * @throws Exception If a cURL error occurs
+     *
+     * @return string Raw response from the API
+     */
+    private function sendRequest(string $url, string $method, array $data = []): string
+    {
+        $ch = curl_init($url);
+
+        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $method);
+        curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
+        curl_setopt($ch, CURLOPT_HTTPHEADER, $this->headers);
+
+        $response = curl_exec($ch);
+        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+
+        if (curl_errno($ch)) {
+            $errorMessage = curl_error($ch);
+            curl_close($ch);
+            throw new Exception("cURL Error: {$errorMessage}");
+        }
+
+        curl_close($ch);
+
+        // Validate HTTP status codes
+        if ($httpCode < 200 || $httpCode >= 300) {
+            throw new Exception("Request to DeepSeek failed with HTTP status code: {$httpCode}");
+        }
+
+        return $response;
+    }
+}