Seriesfeed Favourites Dropdown

Choose your favourites from a dropdown on any page, just like Bierdopje!
换行
// ==UserScript==
// @name         Seriesfeed Favourites Dropdown
// @namespace    https://www.seriesfeed.com
// @version      1.3
// @description  Choose your favourites from a dropdown on any page, just like Bierdopje!
// @match        https://www.seriesfeed.com/*
// @grant        unsafeWindow
// @grant        GM.xmlHttpRequest
// @require      https://code.jquery.com/jquery-3.3.1.min.js
// @author       Tom
// @copyright    2018+, Tom
// ==/UserScript==
/* jshint -W097 */
/* global $, console, GM */
'use strict';

/*
Maybe in the future:
- Cache favourites for quicker loading > add/remove to cache when adding/removing a favourite.
- Enable keyboard input to select a favourite from the list.
*/

$(() => {
	const _baseUrl = "https://www.seriesfeed.com";
	const username = getUsername();

	const starDropdown = getStarDropdown();
	$('.main-menu .new-message').after(starDropdown.topLevel);
	const loader = getLoader();
	starDropdown.dropdown.append(loader);

	ajaxGet(`${_baseUrl}/users/${username}/favourites`)
		.then((page) => {
		const favouriteRows = $(page).find("#favourites tr:gt(0)");

		favouriteRows.each((index, favouriteRow) => {
			const favName = $(favouriteRow).find("td:nth-child(2) a").text();
			const favSlug = $(favouriteRow).find("td:nth-child(2) a").attr("href");
			const isFinishedShow = $(favouriteRow).find("td:nth-child(3)").text() === "Afgelopen";
			const showItem = $("<li/>").append($("<a/>").attr("href", _baseUrl + favSlug).text(favName));

			if (isFinishedShow) {
				showItem.css({ opacity: 0.5 });
			}

			starDropdown.dropdown.append(showItem);
		});

		loader.remove();
	});

	function getUsername() {
		const userLink = $('.main-menu .profile-li .main-menu-dropdown li:first-child a').attr('href');
		const userLinkParts = userLink.split('/');
		return userLinkParts[2];
	}

	function getStarDropdown() {
		const topLevel = $("<li/>").addClass("top-level upper favourites-li");
		const topLevelToggle = $("<a/>").addClass("top-level-toggle").click(function() { $(this).toggleClass("open"); });
		const starIcon = $("<i/>").addClass("fa fa-star-o");
		topLevel.append(topLevelToggle);
		topLevelToggle.append(starIcon);

		const mainMenuDropdown = $("<ul/>").addClass("main-menu-dropdown");
		const scrollContainer = $("<li/>").addClass("scrollContainer");
		const scrollContainerUl = $("<ul/>");
		topLevel.append(mainMenuDropdown);
		mainMenuDropdown.append(scrollContainer);
		scrollContainer.append(scrollContainerUl);

		return { topLevel: topLevel, dropdown: scrollContainerUl };
	}

	function getLoader() {
		const spinnerIcon = $("<i/>").addClass("fa fa-spinner fa-spin");
		return $("<h3/>").addClass("text-center").css({ marginTop: "9px" }).append(spinnerIcon);
	}

	function ajaxGet(url) {
		return new Promise((resolve, reject) => {
			GM.xmlHttpRequest({
				method: "GET",
				url: url,
				onload: (pageData) => {
					resolve(pageData.responseText);
				},
				onerror: (error) => {
					reject(error);
				}
			});
		});
	}
});
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