class Api_AI
{
private $apiKey;
private $baseUrl;

public function __construct()
{
// کلید لیارا را قرار بده
$this->apiKey = 'eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJrZXkiOiI2OTMxYWNlNmI5MzNjZWNmMmExZjcwNDAiLCJ0eXBlIjoiYWlfa2V5IiwiaWF0IjoxNzY0ODYzMjA2fQ.DHQSU-LeBjj1qAgBPFS1u2tfr1a8OWFlORYHVHBMxM0';

// آدرس جدید مثل نمونه JS
$this->baseUrl = 'https://ai.liara.ir/api/6931ac59d829a317c2a477cd/v1/chat/completions';
}

/**
* ارسال پیام به مدل‌های Liara (OpenAI Compatible)
*/
public function generateContent($prompt, $model = "google/gemini-2.0-flash-001", $temperature = 0.7, $maxTokens = 256)
{
$data = [
"model" => $model,
"messages" => [
[
"role" => "user",
"content" => $prompt
]
],
"temperature" => $temperature,
"max_tokens" => $maxTokens
];

$jsonData = json_encode($data);

$ch = curl_init($this->baseUrl);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
'Content-Type: application/json',
'Authorization: Bearer ' . $this->apiKey,
]);
curl_setopt($ch, CURLOPT_POSTFIELDS, $jsonData);

$response = curl_exec($ch);

if ($response === false) {
$error = 'خطای CURL: ' . curl_error($ch);
curl_close($ch);
return $error;
}

curl_close($ch);

$responseData = json_decode($response, true);

if (isset($responseData['error'])) {
return "خطا از Liara AI:\n" . print_r($responseData['error'], true);
}

if (isset($responseData['choices'][0]['message']['content'])) {
return $responseData['choices'][0]['message']['content'];
}

return "پاسخ نامعتبر:\n" . $response;
}
}