<?php
header('Content-Type: application/json');
require_once __DIR__.'/../includes/pexels.php';

$q = $_GET['query'] ?? 'nature';
// Adding negative keywords to filter results
$haram_elements = [
    'bikini', 'uncovered woman', 'alcohol', 'bar', 'gambling', 'pork', 'haram',
    'dating', 'romance', 'kissing', 'nightclub', 'party', 'dog' // dog is controversial for some, better to be safe
];
$negative_query = implode(' ', $haram_elements);

// Pexels API does not support negative keywords in the `query` parameter directly.
// The search will be broad and then filtered, which is not ideal but a limitation of the free API.
// A better approach is to append " halal" or similar positive keywords.
$query = $q . ' halal islamic';

$orientation = $_GET['orientation'] ?? 'portrait';
$url = 'https://api.pexels.com/videos/search?query=' . urlencode($query) . '&orientation=' . urlencode($orientation) . '&per_page=6';

$data = pexels_get($url);

if (!$data || empty($data['videos'])) {
    echo json_encode(['error' => 'Failed to fetch videos for query: ' . $query, 'videos' => []]);
    exit;
}

$videos = [];
foreach ($data['videos'] as $video) {
    $video_file = null;
    // Find a suitable video file link
    foreach ($video['video_files'] as $file) {
        if ($file['quality'] === 'hd' && (strpos($file['link'], '.mp4') !== false)) {
            $video_file = $file;
            break;
        }
    }
    // Fallback to any mp4 file
    if (!$video_file) {
        foreach ($video['video_files'] as $file) {
            if (strpos($file['link'], '.mp4') !== false) {
                $video_file = $file;
                break;
            }
        }
    }

    if ($video_file) {
        $videos[] = [
            'id' => $video['id'],
            'thumbnail' => $video['image'],
            'download_url' => $video_file['link'],
            'photographer' => $video['user']['name'] ?? 'Unknown',
            'photographer_url' => $video['user']['url'] ?? '',
        ];
    }
}

// Second-level filtering for haram terms in video tags, if available
$filtered_videos = array_filter($videos, function($video) use ($haram_elements) {
    if (isset($video['tags']) && is_array($video['tags'])) {
        foreach ($haram_elements as $haram) {
            if (in_array($haram, $video['tags'])) {
                return false;
            }
        }
    }
    return true;
});

echo json_encode(['videos' => array_values($filtered_videos)]);