var FFZ = window.FrankerFaceZ,
	utils = require('../utils'),
	constants = require('../constants');


// --------------------
// Initialization
// --------------------

FFZ.prototype.setup_channel = function() {
	// Style Stuff!
	this.log("Creating channel style element.");
	var s = this._channel_style = document.createElement("style");
	s.id = "ffz-channel-css";
	document.head.appendChild(s);

	// Settings stuff!
	document.body.classList.toggle("ffz-hide-view-count", !this.settings.channel_views);

	this.log("Creating channel style element.");
	var s = this._channel_style = document.createElement('style');
	s.id = "ffz-channel-css";
	document.head.appendChild(s);

	this.log("Hooking the Ember Channel Index view.");
	var Channel = App.__container__.resolve('view:channel/index'),
		f = this;

	if ( ! Channel )
		return;

	this._modify_cindex(Channel);

	// The Stupid View Fix. Is this necessary still?
	try {
		Channel.create().destroy();
	} catch(err) { }

	// Update Existing
	for(var key in Ember.View.views) {
		if ( ! Ember.View.views.hasOwnProperty(key) )
			continue;

		var view = Ember.View.views[key];
		if ( !(view instanceof Channel) )
			continue;

		this.log("Manually updating Channel Index view.", view);
		this._modify_cindex(view);
		view.ffzInit();
	};

	
	this.log("Hooking the Ember Channel model.");
	Channel = App.__container__.resolve('model:channel');
	if ( ! Channel )
		return;

	Channel.reopen({
		ffz_host_target: undefined,
		
		setHostMode: function(e) {
			if ( f.settings.hosted_channels ) {
				this.set('ffz_host_target', e.target);
				return this._super(e);
			} else {
				this.set('ffz_host_target', undefined);
				return this._super({target: void 0, delay: 0});
			}
		}
	});


	this.log("Hooking the Ember Channel controller.");

	Channel = App.__container__.lookup('controller:channel');
	if ( ! Channel )
		return;

	Channel.reopen({
		ffzUpdateUptime: function() {
			if ( f._cindex )
				f._cindex.ffzUpdateUptime();

		}.observes("isLive", "content.id"),

		ffzUpdateTitle: function() {
			var name = this.get('content.name'),
				display_name = this.get('content.display_name');

			if ( display_name )
				FFZ.capitalization[name] = [display_name, Date.now()];

			if ( f._cindex )
				f._cindex.ffzFixTitle();
		}.observes("content.status", "content.id"),

		ffzHostTarget: function() {
			var target = this.get('content.hostModeTarget'),
				name = target && target.get('name'),
				id = target && target.get('id'),
				display_name = target && target.get('display_name');

			if ( id !== f.__old_host_target ) {
				if ( f.__old_host_target )
					f.ws_send("unsub_channel", f.__old_host_target);

				if ( id ) {
					f.ws_send("sub_channel", id);
					f.__old_host_target = id;
				} else
					delete f.__old_host_target;
			}

			if ( display_name )
				FFZ.capitalization[name] = [display_name, Date.now()];

			if ( f.settings.group_tabs && f._chatv )
				f._chatv.ffzRebuildTabs();

			if ( f.settings.follow_buttons )
				f.rebuild_following_ui();

			if ( f.settings.srl_races )
				f.rebuild_race_ui();

		}.observes("content.hostModeTarget")
	});
}


FFZ.prototype._modify_cindex = function(view) {
	var f = this;

	view.reopen({
		didInsertElement: function() {
			this._super();
			try {
				this.ffzInit();
			} catch(err) {
				f.error("CIndex didInsertElement: " + err);
			}
		},

		willClearRender: function() {
			try {
				this.ffzTeardown();
			} catch(err) {
				f.error("CIndex willClearRender: " + err);
			}
			return this._super();
		},

		ffzInit: function() {
			var id = this.get('controller.id'),
				el = this.get('element');

			f._cindex = this;
			f.ws_send("sub_channel", id);

			el.setAttribute('data-channel', id);
			el.classList.add('ffz-channel');

			// Try changing the theater mode tooltip.
			this.$('.theatre-button a').attr('title', 'Theater Mode (Alt+T)');

			this.ffzFixTitle();
			this.ffzUpdateUptime();
			this.ffzUpdateChatters();
			this.ffzUpdateHostButton();

			var views = this.get('element').querySelector('.svg-glyph_views:not(.ffz-svg)')
			if ( views )
				views.parentNode.classList.add('twitch-channel-views');

			if ( f.settings.follow_buttons )
				f.rebuild_following_ui();

			if ( f.settings.srl_races )
				f.rebuild_race_ui();
		},

		ffzFixTitle: function() {
			if ( f.has_bttv || ! f.settings.stream_title )
				return;

			var status = this.get("controller.status"),
				channel = this.get("controller.id");

			status = f.render_tokens(f.tokenize_line(channel, channel, status, true));

			this.$(".title span").each(function(i, el) {
				var scripts = el.querySelectorAll("script");
				if ( ! scripts.length )
					el.innerHTML = status;
				else
					el.innerHTML = scripts[0].outerHTML + status + scripts[1].outerHTML;
			});
		},


		ffzUpdateHostButton: function() {
			var channel_id = this.get('controller.id'),
				hosted_id = this.get('controller.hostModeTarget.id'),

				user = f.get_user(),
				room = user && f.rooms && f.rooms[user.login] && f.rooms[user.login].room,
				now_hosting = room && room.ffz_host_target,
				hosts_left = room && room.ffz_hosts_left, 
				
				el = this.get('element');

			this.set('ffz_host_updating', false);

			if ( channel_id ) {
				var container = el && el.querySelector('.stats-and-actions .channel-actions'),
					btn = container && container.querySelector('#ffz-ui-host-button');

				if ( ! container || ! f.settings.stream_host_button || ! user || user.login === channel_id ) {
					if ( btn )
						btn.parentElement.removeChild(btn);
				} else {
					if ( ! btn ) {
						btn = document.createElement('span');
						btn.id = 'ffz-ui-host-button';
						btn.className = 'button action tooltip';
						
						btn.addEventListener('click', this.ffzClickHost.bind(btn, this, false));
						
						var before = container.querySelector(':scope > .theatre-button');
						if ( before )
							container.insertBefore(btn, before);
						else
							container.appendChild(btn);
					}

					btn.classList.remove('disabled');
					btn.innerHTML = channel_id === now_hosting ? 'Unhost' : 'Host';
					if ( now_hosting )
						btn.title = 'You are now hosting ' + utils.sanitize(FFZ.get_capitalization(now_hosting)) + '.';
					else
						btn.title = 'You are not hosting any channel.';

					if ( typeof hosts_left === "number" )
						btn.title += ' You have ' + hosts_left + ' host command' + utils.pluralize(hosts_left) + ' remaining this half hour.';
				}
			}
			
			
			if ( hosted_id ) {
				var container = el && el.querySelector('#hostmode .channel-actions'),
					btn = container && container.querySelector('#ffz-ui-host-button');

				if ( ! container || ! f.settings.stream_host_button || ! user || user.login === hosted_id ) {
					if ( btn )
						btn.parentElement.removeChild(btn);
				} else {
					if ( ! btn ) {
						btn = document.createElement('span');
						btn.id = 'ffz-ui-host-button';
						btn.className = 'button action tooltip';
						
						btn.addEventListener('click', this.ffzClickHost.bind(btn, this, true));
						
						var before = container.querySelector(':scope > .theatre-button');
						if ( before )
							container.insertBefore(btn, before);
						else
							container.appendChild(btn);
					}

					btn.classList.remove('disabled');
					btn.innerHTML = hosted_id === now_hosting ? 'Unhost' : 'Host';
					if ( now_hosting )
						btn.title = 'You are currently hosting ' + utils.sanitize(FFZ.get_capitalization(now_hosting)) + '. Click to ' + (hosted_id === now_hosting ? 'unhost' : 'host') + ' this channel.';
					else
						btn.title = 'You are not currently hosting any channel. Click to host this channel.';

					if ( typeof hosts_left === "number" )
						btn.title += ' You have ' + hosts_left + ' host command' + utils.pluralize(hosts_left) + ' remaining this half hour.';
				}
			}	
		},
		
		ffzClickHost: function(controller, is_host) {
			var target = controller.get(is_host ? 'controller.hostModeTarget.id' : 'controller.id'),
				user = f.get_user(),
				room = user && f.rooms && f.rooms[user.login] && f.rooms[user.login].room,
				now_hosting = room && room.ffz_host_target;

			if ( ! room || controller.get('ffz_host_updating') )
				return;

			this.classList.add('disabled');
			this.title = 'Updating...';

			controller.set('ffz_host_updating', true);
			if ( now_hosting === target )
				room.send("/unhost");
			else
				room.send("/host " + target);
		},


		ffzUpdateChatters: function() {
			// Get the counts.
			var room_id = this.get('controller.id'),
				room = f.rooms && f.rooms[room_id];

			if ( ! room || ! f.settings.chatter_count ) {
				var el = this.get('element').querySelector('#ffz-chatter-display');
				el && el.parentElement.removeChild(el);
				el = this.get('element').querySelector('#ffz-ffzchatter-display');
				el && el.parentElement.removeChild(el);
				return;
			}

			var chatter_count = Object.keys(room.room.get('ffz_chatters') || {}).length,
				ffz_chatters = room.ffz_chatters || 0,
				ffz_viewers = room.ffz_viewers || 0;

			var el = this.get('element').querySelector('#ffz-chatter-display span');
			if ( ! el ) {
				var cont = this.get('element').querySelector('.stats-and-actions .channel-stats');
				if ( ! cont )
					return;

				var stat = document.createElement('span');
				stat.className = 'ffz stat';
				stat.id = 'ffz-chatter-display';
				stat.title = "Currently in Chat";

				stat.innerHTML = constants.ROOMS + " ";
				el = document.createElement("span");
				stat.appendChild(el);

				var other = cont.querySelector("#ffz-ffzchatter-display");
				if ( other )
					cont.insertBefore(stat, other);
				else
					cont.appendChild(stat);

				jQuery(stat).tipsy();
			}

			el.innerHTML = utils.number_commas(chatter_count);

			if ( ! ffz_chatters && ! ffz_viewers ) {
				el = this.get('element').querySelector('#ffz-ffzchatter-display');
				el && el.parentNode.removeChild(el);
				return;
			}

			el = this.get('element').querySelector('#ffz-ffzchatter-display span');
			if ( ! el ) {
				var cont = this.get('element').querySelector('.stats-and-actions .channel-stats');
				if ( ! cont )
					return;

				var stat = document.createElement('span');
				stat.className = 'ffz stat';
				stat.id = 'ffz-ffzchatter-display';
				stat.title = "Viewers (In Chat) with FrankerFaceZ";

				stat.innerHTML = constants.ZREKNARF + " ";
				el = document.createElement("span");
				stat.appendChild(el);

				var other = cont.querySelector("#ffz-chatter-display");
				if ( other )
					cont.insertBefore(stat, other.nextSibling);
				else
					cont.appendChild(stat);

				jQuery(stat).tipsy();
			}

			el.innerHTML = utils.number_commas(ffz_viewers) + " (" + utils.number_commas(ffz_chatters) + ")";
		},


		ffzUpdateUptime: function() {
			if ( this._ffz_update_uptime ) {
				clearTimeout(this._ffz_update_uptime);
				delete this._ffz_update_uptime;
			}

			if ( ! f.settings.stream_uptime || ! this.get("controller.isLiveAccordingToKraken") ) {
				var el = this.get('element').querySelector('#ffz-uptime-display');
				if ( el )
					el.parentElement.removeChild(el);
				return;
			}

			// Schedule an update.
			this._ffz_update_uptime = setTimeout(this.ffzUpdateUptime.bind(this), 1000);

			// Determine when the channel last went live.
			var online = this.get("controller.content.stream.created_at");
			if ( ! online )
				return;

			online = utils.parse_date(online);
			if ( ! online )
				return;

			var uptime = Math.floor((Date.now() - online.getTime()) / 1000);
			if ( uptime < 0 )
				return;

			var el = this.get('element').querySelector('#ffz-uptime-display span');
			if ( ! el ) {
				var cont = this.get('element').querySelector('.stats-and-actions .channel-stats');
				if ( ! cont )
					return;

				var stat = document.createElement('span');
				stat.className = 'ffz stat';
				stat.id = 'ffz-uptime-display';
				stat.title = "Stream Uptime <nobr>(since " + online.toLocaleString() + ")</nobr>";

				stat.innerHTML = constants.CLOCK + " ";
				el = document.createElement("span");
				stat.appendChild(el);

				var viewers = cont.querySelector(".live-count");
				if ( viewers )
					cont.insertBefore(stat, viewers.nextSibling);
				else {
					try {
						viewers = cont.querySelector("script:nth-child(0n+2)");
						cont.insertBefore(stat, viewers.nextSibling);
					} catch(err) {
						cont.insertBefore(stat, cont.childNodes[0]);
					}
				}

				jQuery(stat).tipsy({html: true});
			}

			el.innerHTML = utils.time_to_string(uptime);
		},

		ffzTeardown: function() {
			var id = this.get('controller.id');
			if ( id )
				f.ws_send("unsub_channel", id);

			this.get('element').setAttribute('data-channel', '');
			f._cindex = undefined;
			if ( this._ffz_update_uptime )
				clearTimeout(this._ffz_update_uptime);

			utils.update_css(f._channel_style, id, null);
		}
	});
}


// ---------------
// Settings
// ---------------

FFZ.settings_info.chatter_count = {
	type: "boolean",
	value: false,

	category: "Channel Metadata",

	name: "Chatter Count",
	help: "Display the current number of users connected to chat beneath the channel.",

	on_update: function(val) {
			if ( this._cindex )
				this._cindex.ffzUpdateChatters();

			if ( ! val || ! this.rooms )
				return;

			// Refresh the data.
			for(var room_id in this.rooms)
				this.rooms.hasOwnProperty(room_id) && this.rooms[room_id].room && this.rooms[room_id].room.ffzInitChatterCount();
		}
	};


FFZ.settings_info.channel_views = {
	type: "boolean",
	value: true,

	category: "Channel Metadata",
	name: "Channel Views",
	help: 'Display the number of times the channel has been viewed beneath the stream.',
	on_update: function(val) {
			document.body.classList.toggle("ffz-hide-view-count", !val);
		}
	};


FFZ.settings_info.hosted_channels = {
	type: "boolean",
	value: true,

	category: "Channel Metadata",
	name: "Channel Hosting",
	help: "Display other channels that have been featured by the current channel.",
	on_update: function(val) {
			var cb = document.querySelector('input.ffz-setting-hosted-channels');
			if ( cb )
				cb.checked = val;
		
			if ( ! this._cindex )
				return;
			
			var chan = this._cindex.get('controller.model'),
				room = chan && this.rooms && this.rooms[chan.get('id')],
				target = room && room.room && room.room.get('ffz_host_target');
			if ( ! chan || ! room )
				return;

			chan.setHostMode({target: target, delay: 0});
		}
	};


FFZ.settings_info.stream_host_button = {
	type: "boolean",
	value: true,

	category: "Channel Metadata",
	name: "Host This Channel Button",
	help: "Display a button underneath streams that make it easy to host them with your own channel.",
	on_update: function(val) {
			if ( this._cindex )
				this._cindex.ffzUpdateHostButton();
		}
	};


FFZ.settings_info.stream_uptime = {
	type: "boolean",
	value: false,

	category: "Channel Metadata",
	name: "Stream Uptime",
	help: 'Display the stream uptime under a channel by the viewer count.',
	on_update: function(val) {
			if ( this._cindex )
				this._cindex.ffzUpdateUptime();
		}
	};


FFZ.settings_info.stream_title = {
	type: "boolean",
	value: true,
	no_bttv: true,

	category: "Channel Metadata",
	name: "Title Links",
	help: "Make links in stream titles clickable.",
	on_update: function(val) {
			if ( this._cindex )
				this._cindex.ffzFixTitle();
		}
	};