// Tích hợp API DooStream
function integrate_doostream_api($video_url) {
    $api_key = '204936hck7bjv63ovp1n22';
    $api_url = "https://doodstream.com/api/upload/url?key=" . $api_key . "&url=" . urlencode($video_url);
    
    $response = wp_remote_get($api_url, array(
        'timeout' => 30,
        'sslverify' => false,
    ));
    
    if (is_wp_error($response)) {
        return $video_url; // Trả về URL gốc nếu lỗi
    }
    
    $data = json_decode(wp_remote_retrieve_body($response), true);
    if (isset($data['result']['filecode'])) {
        return "https://doodstream.com/e/" . $data['result']['filecode'];
    }
    return $video_url;
}

// Tích hợp API Voe.sx
function integrate_voesx_api($video_url) {
    $api_key = 'q6dR5VgUDjnbtwq3F4XnZqkfXGrAc2snTfab6AtU5NNmKpguWP79Nl2RgNghEA58';
    $api_url = "https://voe.sx/api/upload/url?key=" . $api_key . "&url=" . urlencode($video_url);
    
    $response = wp_remote_get($api_url, array(
        'timeout' => 30,
        'sslverify' => false,
    ));
    
    if (is_wp_error($response)) {
        return $video_url; // Trả về URL gốc nếu lỗi
    }
    
    $data = json_decode(wp_remote_retrieve_body($response), true);
    if (isset($data['result']['embed_url'])) {
        return $data['result']['embed_url'];
    }
    return $video_url;
}

// Shortcode cho DooStream
add_shortcode('doostream', function($atts) {
    $atts = shortcode_atts(array('url' => ''), $atts);
    $embed_url = integrate_doostream_api($atts['url']);
    return '<div class="video-container"><iframe src="' . esc_url($embed_url) . '" frameborder="0" allowfullscreen loading="lazy"></iframe></div>';
});

// Shortcode cho Voe.sx
add_shortcode('voesx', function($atts) {
    $atts = shortcode_atts(array('url' => ''), $atts);
    $embed_url = integrate_voesx_api($atts['url']);
    return '<div class="video-container"><iframe src="' . esc_url($embed_url) . '" frameborder="0" allowfullscreen loading="lazy"></iframe></div>';
});

// Bảo vệ và tối ưu iframe cũ
add_filter('the_content', function($content) {
    global $post;
    $video_code = get_post_meta($post->ID, 'video_code', true);
    if (!empty($video_code)) {
        // Bọc iframe cũ trong div responsive
        $content = preg_replace('/<iframe(.*?)<\/iframe>/i', '<div class="video-container"><iframe$1 loading="lazy"></iframe></div>', $content);
        // Thêm video_code nếu chưa có
        if (strpos($content, $video_code) === false) {
            $content = '<div class="video-container">' . $video_code . '</div>' . $content;
        }
    }
    return $content;
});

// Tự động tích hợp API khi lưu bài viết
add_action('save_post', function($post_id) {
    if (isset($_POST['video_code']) && !wp_is_post_revision($post_id)) {
        $video_code = $_POST['video_code'];
        // Nếu video_code là URL, thử tích hợp với API
        if (filter_var($video_code, FILTER_VALIDATE_URL)) {
            $doostream_url = integrate_doostream_api($video_code);
            $voesx_url = integrate_voesx_api($video_code);
            if ($doostream_url !== $video_code) {
                update_post_meta($post_id, 'video_code', '<iframe src="' . esc_url($doostream_url) . '" frameborder="0" allowfullscreen></iframe>');
            } elseif ($voesx_url !== $video_code) {
                update_post_meta($post_id, 'video_code', '<iframe src="' . esc_url($voesx_url) . '" frameborder="0" allowfullscreen></iframe>');
            }
        }
    }
}, 20);

// Tối ưu hiệu suất
add_action('wp_enqueue_scripts', function() {
    // Thêm lazy load
    wp_enqueue_script('lazysizes', 'https://cdnjs.cloudflare.com/ajax/libs/lazysizes/5.3.2/lazysizes.min.js', array(), '5.3.2', true);
}, 99);

// Lấy thumbnail từ API nếu cần
add_filter('tube_getcustomfield', function($value, $field, $post_id) {
    if ($field === 'thumb' && empty($value)) {
        $video_code = get_post_meta($post_id, 'video_code', true);
        if (preg_match('/doodstream\.com\/e\/([a-zA-Z0-9]+)/', $video_code, $matches)) {
            $filecode = $matches[1];
            $api_key = '204936hck7bjv63ovp1n22';
            $api_url = "https://doodstream.com/api/file/info?key=" . $api_key . "&file_code=" . $filecode;
            $response = wp_remote_get($api_url, array('timeout' => 30, 'sslverify' => false));
            if (!is_wp_error($response)) {
                $data = json_decode(wp_remote_retrieve_body($response), true);
                if (isset($data['result'][0]['thumbnail'])) {
                    return $data['result'][0]['thumbnail'];
                }
            }
        }
    }
    return $value;
}, 10, 3);