add_action('save_post', 'process_autoblogging_images');

function process_autoblogging_images($post_id) {
    if (wp_is_post_revision($post_id)) {
        return;
    }
    remove_action('save_post', 'process_autoblogging_images');
    $post = get_post($post_id);
    $post_content = $post->post_content;
    preg_match_all('/<img\s[^>]*?src\s*=\s*([\'"])(https?:\/\/files\.autoblogging\.ai[^\'"]+)\1[^>]*?>/i', $post_content, $matches, PREG_SET_ORDER);
    $featured_image_set = has_post_thumbnail($post_id);
    $upload_dir = wp_upload_dir();
    $post_title = sanitize_title($post->post_title);
    foreach ($matches as $match) {
        $image_url = $match[2];
        $image_data = file_get_contents($image_url);
        $filename = $post_title . '-' . wp_generate_password(2, false) . '.' . pathinfo($image_url, PATHINFO_EXTENSION);
        $filename = wp_unique_filename($upload_dir['path'], $filename);
        $file = $upload_dir['path'] . '/' . $filename;
        file_put_contents($file, $image_data);
        $alt_text = '';
        preg_match('/alt=[\'"](.*?)[\'"]/i', $match[0], $alt_matches);
        if (isset($alt_matches[1])) {
            $alt_text = $alt_matches[1];
        }
        $attachment = array(
            'guid' => $upload_dir['url'] . '/' . $filename,
            'post_mime_type' => 'image/jpeg',
            'post_title' => $alt_text,
            'post_content' => '',
            'post_status' => 'inherit',
            'post_excerpt' => $alt_text,
        );
        $attachment_id = wp_insert_attachment($attachment, $file, $post_id);
        require_once(ABSPATH . 'wp-admin/includes/image.php');
        $attach_data = wp_generate_attachment_metadata($attachment_id, $file);
        wp_update_attachment_metadata($attachment_id, $attach_data);
        if (!$featured_image_set) {
            set_post_thumbnail($post_id, $attachment_id);
            $featured_image_set = true;
            $post_content = preg_replace('/' . preg_quote($match[0], '/') . '/', '', $post_content, 1);
            continue;
        }
        $new_url = wp_get_attachment_url($attachment_id);
        $post_content = str_replace($match[2], $new_url, $post_content);
    }
    wp_update_post(array(
        'ID' => $post_id,
        'post_content' => $post_content,
    ));
    add_action('save_post', 'process_autoblogging_images');
}