"use strict";
/*global io, templates, ajaxify, utils, bootbox, RELATIVE_PATH, config, Visibility*/

var	socket,
	app = app || {};

app.isFocused = true;
app.isConnected = false;
app.currentRoom = null;
app.widgets = {};
app.cacheBuster = null;

(function () {
	var showWelcomeMessage = false;
	var reconnecting = false;

	function socketIOConnect() {
		var ioParams = {
			reconnectionAttempts: config.maxReconnectionAttempts,
			reconnectionDelay: config.reconnectionDelay,
			transports: config.socketioTransports,
			path: config.relative_path + '/socket.io'
		};

		socket = io(config.websocketAddress, ioParams);
		reconnecting = false;

		socket.on('event:connect', function () {
			app.showLoginMessage();
			app.replaceSelfLinks();
			$(window).trigger('action:connected');
			app.isConnected = true;
		});

		socket.on('connect', onSocketConnect);

		socket.on('event:disconnect', function() {
			$(window).trigger('action:disconnected');
			app.isConnected = false;
			socket.connect();
		});

		socket.on('reconnecting', function (attempt) {
			reconnecting = true;
			var reconnectEl = $('#reconnect');

			if (!reconnectEl.hasClass('active')) {
				reconnectEl.html('<i class="fa fa-spinner fa-spin"></i>');
			}

			reconnectEl.addClass('active').removeClass("hide").tooltip({
				placement: 'bottom'
			});
		});

		socket.on('event:banned', function() {
			app.alert({
				title: '[[global:alert.banned]]',
				message: '[[global:alert.banned.message]]',
				type: 'danger',
				timeout: 1000
			});

			setTimeout(function() {
				window.location.href = config.relative_path + '/';
			}, 1000);
		});

		socket.on('event:logout', app.logout);

		socket.on('event:alert', function(data) {
			app.alert(data);
		});

		socket.on('reconnect_failed', function() {
			// Wait ten times the reconnection delay and then start over
			setTimeout(socket.connect.bind(socket), parseInt(config.reconnectionDelay, 10) * 10);
		});
	}

	function onSocketConnect(data) {
		if (reconnecting) {
			var reconnectEl = $('#reconnect');

			reconnectEl.tooltip('destroy');
			reconnectEl.html('<i class="fa fa-check"></i>');
			reconnecting = false;

			// Rejoin room that was left when we disconnected
			var	url_parts = window.location.pathname.slice(RELATIVE_PATH.length).split('/').slice(1);
			var room;

			switch(url_parts[0]) {
				case 'user':
					room = 'user/' + ajaxify.variables.get('theirid');
				break;
				case 'topic':
					room = 'topic_' + url_parts[1];
				break;
				case 'category':
					room = 'category_' + url_parts[1];
				break;
				case 'recent':	// intentional fall-through
				case 'unread':
					room = 'recent_posts';
				break;
				case 'admin':
					room = 'admin';
				break;
				case 'categories':
					room = 'categories';
				break;
			}
			app.currentRoom = '';
			app.enterRoom(room);

			socket.emit('meta.reconnected');

			app.isConnected = true;
			$(window).trigger('action:reconnected');

			setTimeout(function() {
				reconnectEl.removeClass('active').addClass('hide');
			}, 3000);
		}
	}

	app.logout = function() {
		require(['csrf'], function(csrf) {
			$.ajax(RELATIVE_PATH + '/logout', {
				type: 'POST',
				headers: {
					'x-csrf-token': csrf.get()
				},
				success: function() {
					window.location.href = RELATIVE_PATH + '/';
				}
			});
		});
	};

	app.alert = function (params) {
		require(['alerts'], function(alerts) {
			alerts.alert(params);
		});
	};

	app.removeAlert = function(id) {
		require(['alerts'], function(alerts) {
			alerts.remove(id);
		});
	};

	app.alertSuccess = function (message, timeout) {
		app.alert({
			title: '[[global:alert.success]]',
			message: message,
			type: 'success',
			timeout: timeout ? timeout : 2000
		});
	};

	app.alertError = function (message, timeout) {
		app.alert({
			title: '[[global:alert.error]]',
			message: message,
			type: 'danger',
			timeout: timeout ? timeout : 5000
		});
	};

	app.enterRoom = function (room, callback) {
		callback = callback || function() {};
		if (socket) {
			if (app.currentRoom === room) {
				return;
			}

			socket.emit('meta.rooms.enter', {
				enter: room,
				username: app.user.username,
				userslug: app.user.userslug,
				picture: app.user.picture
			}, function(err) {
				if (err) {
					app.alertError(err.message);
					return;
				}
				app.currentRoom = room;
			});
		}
	};

	function highlightNavigationLink() {
		var path = window.location.pathname;
		$('#main-nav li').removeClass('active');
		if (path) {
			$('#main-nav li a').each(function () {
				var href = $(this).attr('href');

				if (href && path.startsWith(href)) {
					$(this.parentNode).addClass('active');
				 	return false;
				}
			});
		}
	}

	app.createUserTooltips = function() {
		$('img[title].teaser-pic,img[title].user-img').each(function() {
			$(this).tooltip({
				placement: 'top',
				title: $(this).attr('title')
			});
		});
	};

	app.createStatusTooltips = function() {
		$('body').tooltip({
			selector:'.fa-circle.status',
			placement: 'top'
		});
	};

	app.replaceSelfLinks = function(selector) {
		selector = selector || $('a');
		selector.each(function() {
			var href = $(this).attr('href');
			if (href && app.user.userslug && href.indexOf('user/_self_') !== -1) {
				$(this).attr('href', href.replace(/user\/_self_/g, 'user/' + app.user.userslug));
			}
		});
	};

	app.processPage = function () {
		highlightNavigationLink();

		$('.timeago').timeago();

		utils.makeNumbersHumanReadable($('.human-readable-number'));

		utils.addCommasToNumbers($('.formatted-number'));

		app.createUserTooltips();

		app.createStatusTooltips();

		app.replaceSelfLinks();

		// Scroll back to top of page
		window.scrollTo(0, 0);
	};

	app.showLoginMessage = function () {
		function showAlert() {
			app.alert({
				type: 'success',
				title: '[[global:welcome_back]] ' + app.user.username + '!',
				message: '[[global:you_have_successfully_logged_in]]',
				timeout: 5000
			});
		}

		if (showWelcomeMessage) {
			showWelcomeMessage = false;
			if (document.readyState !== 'complete') {
				$(document).ready(showAlert);
			} else {
				showAlert();
			}
		}
	};

	app.openChat = function (username, touid) {
		if (username === app.user.username) {
			return app.alertError('[[error:cant-chat-with-yourself]]');
		}

		if (!app.user.uid) {
			return app.alertError('[[error:not-logged-in]]');
		}

		require(['chat'], function (chat) {
			function loadAndCenter(chatModal) {
				chat.load(chatModal.attr('UUID'));
				chat.center(chatModal);
				chat.focusInput(chatModal);
			}

			if (!chat.modalExists(touid)) {
				chat.createModal(username, touid, loadAndCenter);
			} else {
				loadAndCenter(chat.getModal(touid));
			}
		});
	};

	var	titleObj = {
			active: false,
			interval: undefined,
			titles: []
		};

	app.alternatingTitle = function (title) {
		if (typeof title !== 'string') {
			return;
		}

		if (title.length > 0 && !app.isFocused) {
			if (!titleObj.titles[0]) {
				titleObj.titles[0] = window.document.title;
			}

			require(['translator'], function(translator) {
				translator.translate(title, function(translated) {
					titleObj.titles[1] = translated;
					if (titleObj.interval) {
						clearInterval(titleObj.interval);
					}

					titleObj.interval = setInterval(function() {
						var title = titleObj.titles[titleObj.titles.indexOf(window.document.title) ^ 1];
						if (title) {
							window.document.title = $('<div/>').html(title).text();
						}
					}, 2000);
				});
			});
		} else {
			if (titleObj.interval) {
				clearInterval(titleObj.interval);
			}
			if (titleObj.titles[0]) {
				window.document.title = $('<div/>').html(titleObj.titles[0]).text();
			}
		}
	};

	app.refreshTitle = function(url) {
		if (!url) {
			var a = document.createElement('a');
			a.href = document.location;
			url = a.pathname.slice(1);
		}

		socket.emit('meta.buildTitle', url, function(err, title, numNotifications) {
			if (err) {
				return;
			}
			titleObj.titles[0] = (numNotifications > 0 ? '(' + numNotifications + ') ' : '') + title;
			app.alternatingTitle('');
		});
	};

	app.toggleNavbar = function(state) {
		var navbarEl = $('.navbar');
		if (navbarEl) {
			navbarEl.toggleClass('hidden', !!!state);
		}
	};

	app.exposeConfigToTemplates = function() {
		$(document).ready(function() {
			templates.setGlobal('loggedIn', config.loggedIn);
			templates.setGlobal('relative_path', RELATIVE_PATH);
			for(var key in config) {
				if (config.hasOwnProperty(key)) {
					templates.setGlobal('config.' + key, config[key]);
				}
			}
		});
	};

	function createHeaderTooltips() {
		if (utils.findBootstrapEnvironment() === 'xs') {
			return;
		}
		$('#header-menu li a[title]').each(function() {
			$(this).tooltip({
				placement: 'bottom',
				title: $(this).attr('title')
			});
		});

		$('#search-form').parent().tooltip({
			placement: 'bottom',
			title: $('#search-button i').attr('title')
		});

		$('#user_dropdown').tooltip({
			placement: 'bottom',
			title: $('#user_dropdown').attr('title')
		});
	}

	app.handleSearch = function () {
		var searchButton = $("#search-button"),
			searchFields = $("#search-fields"),
			searchInput = $('#search-fields input');

		$('#search-form').on('submit', dismissSearch);
		searchInput.on('blur', dismissSearch);

		function dismissSearch(){
			searchFields.hide();
			searchButton.show();
		}

		function prepareSearch() {
			searchFields.removeClass('hide').show();
			searchButton.hide();
			searchInput.focus();
		}

		searchButton.on('click', function(e) {
			if (!config.loggedIn && !config.allowGuestSearching) {
				app.alert({
					message:'[[error:search-requires-login]]',
					timeout: 3000
				});
				ajaxify.go('login');
				return false;
			}
			e.stopPropagation();

			prepareSearch();
			return false;
		});

		require(['search', 'mousetrap'], function(search, Mousetrap) {
			$('#search-form').on('submit', function (e) {
				e.preventDefault();
				var input = $(this).find('input');

				search.query({term: input.val()}, function() {
					input.val('');
				});
			});

			$('.topic-search')
				.on('click', '.prev', function() {
					search.topicDOM.prev();
				})
				.on('click', '.next', function() {
					search.topicDOM.next();
				});

			Mousetrap.bind('ctrl+f', function(e) {
				if (config.topicSearchEnabled) {
					// If in topic, open search window and populate, otherwise regular behaviour
					var match = ajaxify.currentPage.match(/^topic\/([\d]+)/),
						tid;
					if (match) {
						e.preventDefault();
						tid = match[1];
						searchInput.val('in:topic-' + tid + ' ');
						prepareSearch();
					}
				}
			});
		});
	}

	function handleStatusChange() {
		$('#user-control-list .user-status').off('click').on('click', function(e) {
			var status = $(this).attr('data-status');
			socket.emit('user.setStatus', status, function(err, data) {
				if(err) {
					return app.alertError(err.message);
				}
				$('#logged-in-menu #user_label #user-profile-link>i').attr('class', 'fa fa-circle status ' + status);
			});
			e.preventDefault();
		});
	}

	app.updateUserStatus = function(el, status) {
		if (!el.length) {
			return;
		}

		translator.translate('[[global:' + status + ']]', function(translated) {
			el.removeClass('online offline dnd away')
				.addClass(status)
				.attr('title', translated)
				.attr('data-original-title', translated);
		});
	};

	function handleNewTopic() {
		$('#content').on('click', '#new_topic', function() {
			require(['composer'], function(composer) {
				var cid = ajaxify.variables.get('category_id');
				if (cid) {
					composer.newTopic(cid);
				} else {
					socket.emit('categories.getCategoriesByPrivilege', 'topics:create', function(err, categories) {
						if (err) {
							return app.alertError(err.message);
						}
						if (categories.length) {
							composer.newTopic(categories[0].cid);
						}
					});
				}
			});
		});
	}

	app.load = function() {
		$('document').ready(function () {
			var url = ajaxify.start(window.location.pathname.slice(1), true, window.location.search);
			ajaxify.end(url, app.template);

			handleStatusChange();

			if (config.searchEnabled) {
				app.handleSearch();
			}

			handleNewTopic();

			$('#logout-link').on('click', app.logout);

			Visibility.change(function(e, state){
				if (state === 'visible') {
					app.isFocused = true;
					app.alternatingTitle('');
				} else if (state === 'hidden') {
					app.isFocused = false;
				}
			});

			createHeaderTooltips();
			app.showEmailConfirmWarning();

			socket.removeAllListeners('event:nodebb.ready');
			socket.on('event:nodebb.ready', function(cacheBusters) {
				if (
					!app.cacheBusters ||
					app.cacheBusters.general !== cacheBusters.general ||
					app.cacheBusters.css !== cacheBusters.css ||
					app.cacheBusters.js !== cacheBusters.js
				) {
					app.cacheBusters = cacheBusters;

					app.alert({
						alert_id: 'forum_updated',
						title: '[[global:updated.title]]',
						message: '[[global:updated.message]]',
						clickfn: function() {
							window.location.reload();
						},
						type: 'warning'
					});
				}
			});

			require(['taskbar', 'helpers'], function(taskbar, helpers) {
				taskbar.init();

				// templates.js helpers
				helpers.register();
			});
		});
	};

	app.showEmailConfirmWarning = function(err) {
		if (!config.requireEmailConfirmation || !app.user.uid) {
			return;
		}
		if (!app.user.email) {
			app.alert({
				alert_id: 'email_confirm',
				message: '[[error:no-email-to-confirm]]',
				type: 'warning',
				timeout: 0,
				clickfn: function() {
					app.removeAlert('email_confirm');
					ajaxify.go('user/' + app.user.userslug + '/edit');
				}
			});
		} else if (!app.user['email:confirmed']) {
			app.alert({
				alert_id: 'email_confirm',
				message: err ? err.message : '[[error:email-not-confirmed]]',
				type: 'warning',
				timeout: 0,
				clickfn: function() {
					app.removeAlert('email_confirm');
					socket.emit('user.emailConfirm', {}, function(err) {
						if (err) {
							return app.alertError(err.message);
						}
						app.alertSuccess('[[notifications:email-confirm-sent]]');
					});
				}
			});
		}
	};

	showWelcomeMessage = window.location.href.indexOf('loggedin') !== -1;

	app.exposeConfigToTemplates();

	socketIOConnect();

	app.cacheBuster = config['cache-buster'];

	require(['csrf'], function(csrf) {
		csrf.set(config.csrf_token);
	});

	bootbox.setDefaults({
		locale: config.userLang
	});

	app.alternatingTitle('');

}());