/* global redux_change, wp */
(function($){
    "use strict";
    
    $.gallery = $.gallery || {};
	
    $(document).ready(function () {
        //gallery insert functionality
        $.gallery();
    });

    $.gallery = function(){
        // When the user clicks on the Add/Edit gallery button, we need to display the gallery editing
        $('body').on({
            click: function(event){
                var current_gallery = $(this).closest('fieldset');

                if (event.currentTarget.id === 'clear-gallery') {
                    //remove value from input 
                    
                    var rmVal = current_gallery.find('.gallery_values').val('');

                    //remove preview images
                    current_gallery.find(".screenshot").html("");

                    return;

                }

                // Make sure the media gallery API exists
                if ( typeof wp === 'undefined' || ! wp.media || ! wp.media.gallery ) {
                    return;
                }
                event.preventDefault();

                // Activate the media editor
                var $$ = $(this);

                var val = current_gallery.find('.gallery_values').val();
                var final;
                if (!val) {
                    final = '[gallery ids="0"]';
                } else {
                    final = '[gallery ids="' + val + '"]';
                }

                var frame = wp.media.gallery.edit(final);

                    
                // When the gallery-edit state is updated, copy the attachment ids across
                frame.state('gallery-edit').on( 'update', function( selection ) {

                    //clear screenshot div so we can append new selected images
                    current_gallery.find(".screenshot").html("");
                    
                    var element, preview_html= "", preview_img;
                    var ids = selection.models.map(function(e){
                        element = e.toJSON();
                        preview_img = typeof element.sizes.thumbnail !== 'undefined'  ? element.sizes.thumbnail.url : element.url ;
                        preview_html = "<a class='of-uploaded-image' href='"+preview_img+"'><img class='redux-option-image' src='"+preview_img+"' alt='' /></a>";
                        current_gallery.find(".screenshot").append(preview_html);
                        return e.id;
                    });
                    current_gallery.find('.gallery_values').val(ids.join(','));
                    redux_change( current_gallery.find( '.gallery_values' ) );
    
                });


                return false;
            }
        }, '.gallery-attachments');
    };
})(jQuery);