// ==UserScript==
// @name        amateri-filter
// @namespace   amateri.cz
// @include     https://www.amateri.com/chat-ws/?roomid=1306280
// @include     https://www.amateri.com/chat-ws/?roomid=1789388
// @include     https://www.amateri.com/chat-ws/?roomid=1306280
// @include     https://www.amateri.com/chat-ws/?roomid=2284882
// @version     1
// @grant       none
// @require     https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.4/jquery.min.js
// ==/UserScript==

this.$ = this.jQuery = jQuery.noConflict(true);

(function () {
	'use strict';

	var USERS_RESOURCE = '//server.u1ca.win/chat-filter/users';

	var HashMap = function () {
		var map = {},
			hash = function (string) {
				return string.toLowerCase();
			};

		this.put = function (key, value) {
			map[hash(key)] = value;
		};

		this.get = function (key) {
			return map[hash(key)];
		};
	};

	var blacklistProvider = function () {
		var deferred = $.Deferred(),
			blacklist = new HashMap();

		$.ajax(USERS_RESOURCE).then(function (users) {
			users.forEach(function (user) {
				blacklist.put(user.name, user);
			});
			console.info('Blacklist retrieved');
			deferred.resolve(blacklist);
		});
		return deferred;
	};

	var MessageUser = function (user) {

		this.myself = function () {
			return user.n === window.user;
		};

		this.male = function () {
			return user.p === 1;
		};

		this.name = function () {
			return user.n;
		};
	};

	var FilterMenu = function (callback) {
		var button = $('<a>'),
			menu,
			createMenu = function () {
				menu = $('<div>');
				Object.keys(chatFilter.Reason).forEach(function (reason, index) {
					var item = $('<a>')
						.attr('href', '#')
						.html(reason.toLowerCase())
						.click(callback.bind(this, reason));
					index > 0 && menu.append(' ');
					menu.append(item);
				});
				menu.css('position', 'absolute');
				menu.css('background-color', 'rgba(255, 255, 255, 0.9)');
				menu.css('border', '1px solid white');
				button.after(menu);
			},
			destroyMenu = function () {
				menu.remove();
				menu = null;
			};

		button.attr('href', '#');
		button.html('&#9776;');
		button.click(function () {
			if (menu) {
				destroyMenu();
			} else {
				createMenu();
			}
		});
		button.css('text-decoration', 'none');

		this.button = function () {
			return button;
		};
	};

	var ChatFilter = function () {
		var blacklistPromise = blacklistProvider(),
			self = this;

		this.insertBefore = function (newElement, referenceElement) {
			var callback = Node.prototype.insertBefore.bind(this, newElement, referenceElement),
				groups = /parent\.showInfo\((\d+),0\)/.exec(newElement.innerHTML),
				user = window.users[groups[1]],
				messageUser = user && new MessageUser(user);

			if (!messageUser) {
				return;
			}
			if (messageUser.male() && !messageUser.myself()) {
				return;
			}
			blacklistPromise.then(function (blacklist) {
				if (!blacklist.get(messageUser.name())) {
					var nameElement = $(newElement).find('b[onclick]'),
						filterMenu = new FilterMenu(function (reason) {
							self.add(messageUser.name(), reason);
							$(newElement).remove();
						});
					nameElement.before(filterMenu.button(), ' ');
					callback();
				}
			});
		};

		this.add = function (name, reason) {
			var user = {
				name: name,
				reason: reason
			};

			blacklistPromise.then(function (blacklist) {
				blacklist.put(user.name, user);
			});

			$.ajax(USERS_RESOURCE, {
				method: 'PUT',
				data: JSON.stringify(user),
				contentType: 'application/json',
				success: function () {
					console.info('User %s added', user.name);
				}
			});
		};

		this.remove = function (name) {
			$.ajax(USERS_RESOURCE + '/' + name, {
				method: 'DELETE',
				success: function (data) {
					console.info('Removed %d users having name %s', data, name);
				}
			});
		};
	};

	ChatFilter.prototype.Reason = {
		DISLIKE: 'dislike',
		OFFTOPIC: 'offtopic',
		WEBCAM: 'webcam',
		SPAM: 'spam',
		PRO: 'pro',
		COUPLE: 'couple',
		MALE: 'male',
		FAKE: 'fake'
	};

	$(window.chat).load(function () {
		window.chatFilter = new ChatFilter();
		$('#textPlace', window.chat.document).get(0).insertBefore = window.chatFilter.insertBefore;

		window.nKick = function () {
			var randomSmiley = function () {
				return '*' + Math.ceil(Math.random() * 478) + '*';
			};
			return function (min) {
				var bottom = window.bottom.document;
				$('#zprava', bottom).get(0).value = randomSmiley();
				var messageButton = bottom.evaluate('//form[@id="formular"]/input[@type="submit"]', bottom, null,
					XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
				messageButton.click();
			};
		}();

		window.chat.document.body.onresize = function () {};
	});
})();