<?php
header('Content-Type: application/json');
require_once __DIR__ . '/../db/config.php';
require_once __DIR__ . '/../ai/LocalAIApi.php';

session_start();
if (!isset($_SESSION['user_id'])) {
    echo json_encode(['success' => false, 'error' => 'Unauthorized']);
    exit;
}

$text = $_POST['text'] ?? '';
$direction = $_POST['direction'] ?? 'en-ar'; // en-ar or ar-en

if (empty($text)) {
    echo json_encode(['success' => false, 'error' => 'Text is empty']);
    exit;
}

$target_lang = $direction === 'en-ar' ? 'Arabic' : 'English';
$source_lang = $direction === 'en-ar' ? 'English' : 'Arabic';

try {
    $prompt = "Translate the following text from $source_lang to $target_lang. Provide ONLY the translated text, no explanation or extra characters.\n\nText: $text";
    
    $response = LocalAIApi::createResponse([
        'input' => [
            ['role' => 'system', 'content' => 'You are a professional translator specializing in business and laundry service terminology.'],
            ['role' => 'user', 'content' => $prompt],
        ],
    ]);

    if (!empty($response['success'])) {
        $translatedText = LocalAIApi::extractText($response);
        echo json_encode(['success' => true, 'translation' => trim($translatedText)]);
    } else {
        echo json_encode(['success' => false, 'error' => $response['error'] ?? 'AI translation failed']);
    }
} catch (Exception $e) {
    echo json_encode(['success' => false, 'error' => $e->getMessage()]);
}