Steam DLC wishlister

Add all DLCs on wishlist by one click. Also you can remove game from wishlist directly from game store page.
سوئال سوراش، ئوبزور يېزىش ياكى قوليازمىنى پاش قىلىش.
// ==UserScript==
// @name         Steam DLC wishlister
// @description  Add all DLCs on wishlist by one click. Also you can remove game from wishlist directly from game store page.
// @author       Bladito
// @version      0.4.3
// @homepageURL  https://greasyfork.org/en/users/55159-bladito
// @match        https://store.steampowered.com/app/*
// @namespace    Bladito/steam-dlc-wishlister
// @require      http://code.jquery.com/jquery-latest.js
// @grant        GM_addStyle
// ==/UserScript==

(function($) {
    'use strict';

    addDlcButton();

    if ($('#add_to_wishlist_area').length === 0 && $('.game_area_already_owned').length === 0) { // game is wishlisted and not owned
        addButton_removeFromWishlist();
    }
    $('#add_to_wishlist_area').click(addButton_removeFromWishlist);

    //-------------------------------------------------------------------------------------------------

    // Used timeout because sometimes userdata is not cached and steam loads it after I add buttons
    // (http://store.steampowered.com/dynamicstore/userdata/?id=12345&v=12345)
    function addDlcButton() {
        setTimeout(function() {
            if ($('.game_area_dlc_row').length === $('.game_area_dlc_row.ds_wishlist').length) {
                addButton_removeAllDlcsFromWishlist();
            } else {
                addButton_addAllDlcsToWishlist();
            }
        }, 1000);
    }

    function addButton_removeFromWishlist() {
        var unwishlisterButton = $('<a class="btnv6_blue_hoverfade btn_medium queue_btn_inactive"><span>Remove from wishlist</span></a>');
        unwishlisterButton.click(removeFromWishlist);
        $('.queue_actions_ctn').prepend(unwishlisterButton);
    }

    function addButton_addAllDlcsToWishlist() {
        var wishlisterButton = $('<a class="bladito-steam-wishlist btnv6_blue_blue_innerfade btn_medium"><span>Add all DLC to Wishlist</span></a>');
        wishlisterButton.click(addAllDlcsToWishlist);
        $('#dlc_purchase_action').prepend(wishlisterButton);
    }

    function addButton_removeAllDlcsFromWishlist() {
        var unwishlisterButton = $('<a class="bladito-steam-unwishlist btnv6_blue_blue_innerfade btn_medium"><span>Remove all DLC from Wishlist</span></a>');
        unwishlisterButton.click(removeAllDlcsFromWishlist);
        $('#dlc_purchase_action').prepend(unwishlisterButton);
    }

    function addAllDlcsToWishlist() {
        $('.game_area_dlc_row').not('.ds_wishlist').each(function() {
            var $this = $(this);
            unsafeWindow.AddToWishlist($this.data('ds-appid'));
            $this.addClass('ds_wishlist').addClass('ds_flagged');
            $this.append('<div class="ds_flag ds_wishlist_flag">ON WISHLIST&nbsp;&nbsp;</div>');
        }).promise().done(function(){
            $('.bladito-steam-wishlist').remove();
            addButton_removeAllDlcsFromWishlist();
        });
    }

    function removeAllDlcsFromWishlist() {
        $('.game_area_dlc_row.ds_wishlist').each(function() {
            var $this = $(this);
            unsafeWindow.GDynamicStore.ModifyWishlist($this, $this.data('ds-appid'), true, function() {
                $this.removeClass('ds_wishlist').removeClass('ds_flagged');
                $('.ds_flag.ds_wishlist_flag', $this).remove();
            }, function(){
                console.log('Error occured while trying to unwishlist DLC');
            });
        }).promise().done(function(){
            $('.bladito-steam-unwishlist').remove();
            addButton_addAllDlcsToWishlist();
        });
    }

    function removeFromWishlist() {
        var data = {
            sessionid: $('form input[name="sessionid"]').val(),
            action: 'remove',
            appid: window.location.href.match(/https?:\/\/store\.steampowered\.com\/app\/([^\/]+)/)[1]
        };
        $.post("https://store.steampowered.com/api/removefromwishlist", data, function() {
            window.location.reload();
        });
    }

})(jQuery);