<?php
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

header('Content-Type: application/json');

require_once __DIR__ . '/../ai/LocalAIApi.php';
require_once __DIR__ . '/../includes/pexels.php';

$requestBody = file_get_contents('php://input');
$data = json_decode($requestBody, true);
$query = $data['query'] ?? '';

if (empty($query)) {
    echo json_encode(['error' => 'Query is empty']);
    exit;
}

$resp = LocalAIApi::createResponse(
    [
        'input' => [
            ['role' => 'system', 'content' => 'You are a travel agent specializing in Poland. The user is looking for: ' . $query . '. Provide a travel suggestion with a title and a description. Your response must be in JSON format, like this: {"title": "...", "description": "..."}'],
            ['role' => 'user', 'content' => $query],
        ],
    ]
);

if (!empty($resp['success'])) {
    $text = LocalAIApi::extractText($resp);
    $aiResponse = json_decode($text, true);

    if (json_last_error() !== JSON_ERROR_NONE) {
        // If the response is not a valid JSON, we try to extract the title and description manually
        // This is a fallback mechanism
        $title = "AI Generated Response";
        $description = $text;
    } else {
        $title = $aiResponse['title'] ?? 'AI Generated Response';
        $description = $aiResponse['description'] ?? 'No description available.';
    }

    $pexelsUrl = 'https://api.pexels.com/v1/search?query=' . urlencode($title) . '&orientation=landscape&per_page=1&page=1';
    $pexelsData = pexels_get($pexelsUrl);

    $imageUrl = 'https://images.pexels.com/photos/1699030/pexels-photo-1699030.jpeg?auto=compress&cs=tinysrgb&w=1260&h=750&dpr=1'; // Default image
    if ($pexelsData && !empty($pexelsData['photos'])) {
        $photo = $pexelsData['photos'][0];
        $imageUrl = $photo['src']['large2x'] ?? ($photo['src']['large'] ?? $photo['src']['original']);
    }

    echo json_encode([
        'title' => $title,
        'description' => $description,
        'image' => $imageUrl
    ]);
} else {
    error_log('AI error: ' . ($resp['error'] ?? 'unknown'));
    echo json_encode(['error' => 'Failed to get AI response']);
}