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<?php |
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declare(strict_types=1); |
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namespace Chamilo\CoreBundle\Service\AI; |
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use Chamilo\CoreBundle\Settings\SettingsManager; |
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use Symfony\Contracts\HttpClient\HttpClientInterface; |
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class OpenAiProvider implements AiProviderInterface |
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{ |
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private string $apiUrl; |
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private string $apiKey; |
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private string $model; |
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private float $temperature; |
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private string $organizationId; |
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private int $monthlyTokenLimit; |
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private HttpClientInterface $httpClient; |
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public function __construct(HttpClientInterface $httpClient, SettingsManager $settingsManager) |
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{ |
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$this->httpClient = $httpClient; |
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// Get AI providers from settings |
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$configJson = $settingsManager->getSetting('ai_helpers.ai_providers', true); |
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$config = json_decode($configJson, true) ?? []; |
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if (!isset($config['openai'])) { |
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throw new \RuntimeException('OpenAI configuration is missing.'); |
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} |
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$this->apiUrl = $config['openai']['url'] ?? 'https://api.openai.com/v1'; |
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$this->apiKey = $config['openai']['api_key'] ?? ''; |
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$this->model = $config['openai']['model'] ?? 'gpt-3.5-turbo'; |
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$this->temperature = $config['openai']['temperature'] ?? 0.7; |
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$this->organizationId = $config['openai']['organization_id'] ?? ''; |
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$this->monthlyTokenLimit = $config['openai']['monthly_token_limit'] ?? 10000; |
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if (empty($this->apiKey)) { |
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throw new \RuntimeException('OpenAI API key is missing.'); |
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} |
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} |
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public function generateQuestions(string $topic, int $numQuestions, string $questionType, string $language): ?string |
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{ |
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$prompt = sprintf( |
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'Generate %d "%s" questions in Aiken format in the %s language about "%s".', |
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$numQuestions, $questionType, $language, $topic |
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); |
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$payload = [ |
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'model' => $this->model, |
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'prompt' => $prompt, |
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'temperature' => $this->temperature, |
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'max_tokens' => 2000, |
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'frequency_penalty' => 0, |
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'presence_penalty' => 0.6, |
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'top_p' => 1.0, |
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]; |
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try { |
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$response = $this->httpClient->request('POST', $this->apiUrl . '/completions', [ |
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'headers' => [ |
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'Authorization' => 'Bearer ' . $this->apiKey, |
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'Content-Type' => 'application/json', |
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], |
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'body' => json_encode($payload), |
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]); |
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$statusCode = $response->getStatusCode(); |
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$responseContent = $response->getContent(false); |
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if ($statusCode === 200) { |
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$data = json_decode($responseContent, true); |
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return $data['choices'][0]['text'] ?? null; |
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} |
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$errorData = json_decode($responseContent, true); |
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if (isset($errorData['error']['code'])) { |
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switch ($errorData['error']['code']) { |
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case 'insufficient_quota': |
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throw new \Exception("You have exceeded your OpenAI quota. Please check your OpenAI plan."); |
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case 'invalid_api_key': |
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throw new \Exception("Invalid API key. Please check your OpenAI configuration."); |
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case 'server_error': |
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throw new \Exception("OpenAI encountered an internal error. Try again later."); |
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default: |
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throw new \Exception("An error occurred: " . $errorData['error']['message']); |
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} |
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} |
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throw new \Exception("Unexpected error from OpenAI."); |
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} catch (\Exception $e) { |
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error_log("ERROR - OpenAI Request failed: " . $e->getMessage()); |
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return "Error: " . $e->getMessage(); |
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} |
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} |
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} |
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chamilo /
chamilo-lms
