
function custom_multi_image_upload_form_shortcode($atts) {
    // Récupérer le paramètre prefix du shortcode
    $atts = shortcode_atts(array(
        'prefix' => 'envoi-'
    ), $atts);

    ob_start();
    ?>
    

    
        
        Téléchargement en cours...
    

    
        
        
            
                Glissez-déposez vos images ici
                OU
            

            
            Sélectionner des images

            
            

            

            
                
                    
                
            
        
    

    
     $name) {
            if ($files['error'][$key] === UPLOAD_ERR_OK) {
                $file = [
                    'name' => $files['name'][$key],
                    'type' => $files['type'][$key],
                    'tmp_name' => $files['tmp_name'][$key],
                    'size' => $files['size'][$key],
                ];

                $allowed_types = ['jpg', 'jpeg', 'png', 'gif', 'webp'];
                $file_ext = strtolower(pathinfo($file['name'], PATHINFO_EXTENSION));

                if (in_array($file_ext, $allowed_types) && $file['size'] < 10000000) {
                    $original_name = pathinfo($file['name'], PATHINFO_FILENAME);
                    $new_filename = $prefix . $original_name . '.' . $file_ext;
                    $filename = wp_unique_filename($upload_dir['path'], $new_filename);
                    $destination = $upload_dir['path'] . '/' . $filename;

                    if (move_uploaded_file($file['tmp_name'], $destination)) {
                        // Enregistrer dans la médiathèque WordPress
                        $attachment = [
                            'guid' => $upload_dir['url'] . '/' . $filename,
                            'post_mime_type' => $file['type'],
                            'post_title' => preg_replace('/\.[^.]+$/', '', $new_filename),
                            'post_content' => '',
                            'post_status' => 'inherit'
                        ];

                        $attach_id = wp_insert_attachment($attachment, $destination);
                        require_once(ABSPATH . 'wp-admin/includes/image.php');
                        $attach_data = wp_generate_attachment_metadata($attach_id, $destination);
                        wp_update_attachment_metadata($attach_id, $attach_data);

                        // Compatibilité avec les plugins comme FileBird
                        do_action('add_attachment', $attach_id);

                        $success_count++;
                    }
                }
            }
        }

        wp_redirect(add_query_arg([
            'success' => '1',
            'count' => $success_count
        ], $_SERVER['REQUEST_URI']));
        exit;
    }
});