function flashPlayerTimeListener(obj) { 
	var player = document.getElementById(obj.id);
	player.position = obj.position;
}
function flashPlayerStateListener(obj) { 
	var player = document.getElementById(obj.id);
	player.state = obj.newstate;
}

YUI.add('videoplayer', function(Y) {

	var Lang = Y.Lang,
		Widget = Y.Widget,
		Node = Y.Node;
	
	/* VideoPlayer class constructor */
	function VideoPlayer(config) {
		VideoPlayer.superclass.constructor.apply(this, arguments);
	}

	/* 
	 * Required NAME static field, to identify the Widget class and 
	 * used as an event prefix, to generate class names etc. (set to the 
	 * class name in camel case). 
	 */
	VideoPlayer.NAME = "videoplayer";

	/*
	 * The attribute configuration for the VideoPlayer widget. Attributes can be
	 * defined with default values, get/set functions and validator functions
	 * as with any other class extending Base.
	 */
	VideoPlayer.ATTRS = {
		src: {
			value: "auto"
		},
		height: {
			value: 200
		},
		width: {
			value: 300
		},
		state: { // "BUFFERING", "PAUSED", "PLAYING", "FINISHED"
			value: "STOPPED"
		},
		duration: { // in ms
			value: null
		},
		autoplay: {
			value: false
		},
		start: {
			value: 0
		},
		controls: {
			value: true
		},
		playerType : {
			value: null
		},
		extensions : {
			value: {
				mp4:"flash",
				flv:"flash",
				asf:"silverlight",
				wmv:"silverlight"
			}
		},
		filepath : {
			value: '/js/videoplayer/'
		}
	};

	/* VideoPlayer extends the base Widget class */
	Y.extend(VideoPlayer, Widget, {

		initializer: function() {
			if(this.get("playerType")=="auto") {
				this._guessPlayerType();
			}
		},

		destructor : function() {
		},

		renderUI : function() {
			this._renderContent();
		},

		bindUI : function() {
		},

		syncUI : function() {
		},

		_renderContent : function() {
			var playerType = this.get("playerType");
			if(playerType=="html") {
				this._renderHTMLPlayer();
			} else if(playerType=="flash") {
				this._renderFlashPlayer();
			} else if(playerType=="silverlight") {
				this._renderSilverlightPlayer();
			} else if(playerType=="npo") {
				this._renderNPOPlayer();
			}
		},
		
		/* HTML5 */
		_renderHTMLPlayer : function() {
			var content = this.get("contentBox"),
				src = this.get("src"),
				height = this.get("height"),
				width = this.get("width"),
				id = Y.guid();

			var video = '<video'
				+' id='+id
				+' src='+src
				+' height='+height+'px'
				+' width='+width+'px'
				+' currentTime='+this.get("start")
				+ 'preload';
			if(this.get("autoplay")) {video += ' autoplay'}
			if(this.get("controls")) {video += ' controls' }
			video +='></video>';

			content.appendChild(Node.create(video));
			this.player = document.getElementById(id);//video._node;
		},
		
		/* silverlight */
		_renderSilverlightPlayer : function() {			
			// make sure we have the required scripts loaded
			if(typeof jeroenwijering == "undefined") {
				var filepath = this.get('filepath'),
					urls = [
						filepath+'silverlight.js',
						filepath+'wmvplayer.js'
					];
					
				Y.Get.script(urls, {
		    		onSuccess: this._embedSilverlightPlayer,
					context: this
				});
			}
			else {
				this._embedSilverlightPlayer();
			}				
		},
		
		_embedSilverlightPlayer : function() {
			var src = this.get("src");
			
			Y.log('create silverlight player');

			var content = this.get("contentBox"),
				height = this.get("height"),
				width = this.get("width"),
				start = this.get("start"),
				id = Y.guid(),
				xaml = this.get('filepath')+'wmvplayer.xaml';
		
			var video = content.appendChild(Node.create('<div id="'+id+'"></div>'));
		    var cfg = {
			    file:src,
			    width:width,
			    height:height,
				//linkfromdisplay:'true',
				autostart:'true'
		    };
 			if(!this.get("controls")) {cfg.shownavigation='false'}
			this.player = new jeroenwijering.Player(video._node,xaml,cfg);
			this._addSilverlightListeners();
			this._silverlightJumpStart();
		},
		
		_addSilverlightListeners : function() {
			if(this.player.view) {
				var oSelf = this,
					player = this.player;
					
				player.addListener('TIME', function(time) {
					oSelf._changeCurrentTime(time);
				});
				player.addListener('STATE', function(oldState, newState) {
					oSelf._changeState(newState);
				}); 
			} else {
				Y.later(100, this, this._addSilverlightListeners);
			}
		},
		
		/* Flash */	
		_renderFlashPlayer : function() {
 			var url = this.get('filepath')+'swfobject.js';
			if(typeof swfobject == "undefined") {
 				Y.Get.script(url, {
		    		onSuccess: this._embedFlashPlayer,
					context: this
				});
			} 
			else {
				this._embedFlashPlayer();
			}
		},
		
		_embedFlashPlayer : function() {
			Y.log('create flash player');
			
			var content = this.get("contentBox"),
 				height = this.get("height"),
				width = this.get("width"),
				id = Y.guid(),
				playerId = id+"_player",
				swf = this.get('filepath')+'player.swf';
			
			var flashvars = {
				file: this.get("src"),
				autostart: 'true'
			};
			if(!this.get("controls")) {flashvars.controlbar='none'}
			var attributes = {
				'id': playerId,
				'name': playerId
			};
			var params = {
				'allowscriptaccess': 'always'
			};
			
			content.appendChild(Node.create('<div id="'+id+'"></div>'));
			swfobject.embedSWF(swf,id,width,height,'9','false',flashvars,params,attributes);
			this.playerId = playerId;
			this._flashJumpStart();
			this._addFlashListeners();
		},
		
		_addFlashListeners : function() {
			try {
				var player = document.getElementById(this.playerId);
				// add listeners
				player.addModelListener("Time", "flashPlayerTimeListener");
				player.addModelListener("State", "flashPlayerStateListener");
				this.player = player;
				this._flashTimeCheck();
				this._flashStateCheck();
			} catch(e) {
				Y.later(100, this, this._addFlashListeners);
			}
		},
		
		/* NPO silverlight */
		_renderNPOPlayer : function() {			
			// make sure we have the required scripts loaded
			var filepath = this.get('filepath'),
				urls = [
					filepath+'silverlight.js',
					filepath+'ugslplayer.js'
				];
			Y.Get.script(urls, {
	    		onSuccess: this._embedNPOPlayer,
				context: this
			});				
		},
		
		_embedNPOPlayer : function() {
			var src = this.get("src");
			
			Y.log('create npo player');

			var content = this.get("contentBox"),
				height = this.get("height"),
				width = this.get("width"),
				start = this.get("start"),
				controls = this.get("controls") ? 'yes' : 'no',
				id = Y.guid();
			
			var cfg = {
				width : width,
				height : height,
				volume : '100',
				showBorder : 'no',
				embedEnabled : 'yes',
				controlBarEnabled : controls,
				viewMode : 'video',
				//playMode : autoplay ? 'play' : 'pause',
				playlistEnabled : 'no',
				playlistAdvanceEnabled : 'no',
				fragmentID : src
				//callbackFunction : 
			};
			
			var video = content.append(Node.create('<div id="'+id+'"></div>'));	
			this.player = new UGSLPlayer(document.getElementById(id),
					'http://embed.player.omroep.nl/slg/ugslplayer.xap',
					cfg);
		},
		
		_ugCallbackFunction : function(eventType, args) {
			if (eventType = 'PropertyChanged') {
				console.log('property %s changed from %s to %s', args.name, args.oldvalue, args.newvalue);
				if(args.name=='seekTime') {
					this._changeCurrentTime(arg.newvalue);
				}
				else if(args.name=='videostatus') {
					
				}
				/*
				if (args.name == 'seekTime' || args.name == 'videoStatus') {
					var streamStatus = vp.player.getConfigProperty('videoStatus');
					if (streamStatus != 'playing') {
						return;
					}
					var seekTime = Utils.parseTime(vp.player
							.getConfigProperty('seekTime'));
					var startTime = Utils.parseTime(vp.player
							.getConfigProperty('startTime'));
					var endTime = Utils.parseTime(vp.player
							.getConfigProperty('endTime'));
					if (!startTime || !endTime) {
						return;
					}
					var duration = endTime - startTime;
					var elapsed = seekTime;
					if (elapsed > duration - 5) {
						vp.nearEnd = true;
					}
					vp.onTick(elapsed, duration);
				} else if (args.name == 'playMode' && args.newvalue == 'pause' && vp.nearEnd) {
					vp.dispatchEvents("fragmentEnd");
				}*/
			}
		},
		
		/* methods */
			
		getDuration : function() {
			var pt = this.get("playerType"),
				p = this.player;
			if(this.duration) {
				return this.duration;
			} else {
				if(pt=="silverlight") {
					return p.configuration.duration;
				} else if(pt=="flash") {
					return p.getConfig().duration;
				}
			}
		},	
		// returns current playHead in ms
		getTime : function() {
			var p = this.player;
			if(p.currentTime) {
				return p.currentTime;
			} else {
				return 0;
			}
		},
		// sets current playHead in ms
		setTime : function(time, play) {
			Y.log('seek to '+time);
			var pt = this.get("playerType"),
				p = this.player,
				oldtime = this.getTime();
				
			if(pt=="silverlight") {
				p.sendEvent('SCRUB', time);
				if(play) { this.play(); }
			} else if(pt=="npo") {
				var h = parseInt(time/3600) % 24,
					m = parseInt(time/60) % 60,
					s = time % 60,
					hms = (h<10 ? "0"+h : h) + ":" + (m<10 ? "0"+m : m) + ":" + (s<10 ? "0"+s : s);
				console.log(hms);	
				p.content.ugslAccess.setConfigProperty('seekTime', hms);
			} else if(pt=="flash"){
				p.sendEvent('SEEK', time);
				if(!play) { Y.later(100, this, this.pause); }
			} else {
				p.currentTime = time;
				if(play) {this.play();}
			}
			this.fire("timeSet", {oldtime:oldtime, newtime:time});
		},
		loadVideo : function(src) {
			Y.log('load '+src);	
			var oldPt = this.get("playerType"),
				p = this.player;
			
			this.set("src", src);
 			var pt = this._guessPlayerType();
			if(pt==oldPt) {
				if(pt=="silverlight"||pt=="flash") {
					// TBD something fails here
					p.sendEvent("LOAD", src);
				}
			} else {
				this._renderContent();
			}
			this.fire("videoLoad", {src:src, playerType:pt});
		},
		play : function() {
			var pt = this.get("playerType"),
				p = this.player,
				state = this.get("state");

			if(!(state=='BUFFERING'||state=='PLAYING')) {
				if(pt=="html") {
					p.play();
					this._changeState("PLAYING");
				} else {
					p.sendEvent('PLAY');
				}
			}
		},
		pause : function() {
			var pt = this.get("playerType"),
				p = this.player,
				state = this.get("state");

			if(state=='PLAYING'||state=='BUFFERING') {
				if(pt=="html") {
					p.pause();
					this._changeState("PAUSED");
				} else {
					p.sendEvent('PLAY');
				}
			}
		},
		stop : function() {
			var pt = this.get("playerType"),
				p = this.player;
			
			if(pt=="html") {
				p.stop();
				this._changeState("STOPPED");
			} else {
				p.sendEvent('STOP');
			}
		},

		_guessPlayerType : function() {
			// guess required playerType based on extension
			if(this.get("src")) {
				var pt = null,
					src = this.get("src"),
					extensions = this.get("extensions"),
					ext = src.substr(src.length-3, 3);
				
				if(parseInt(src)) {
					pt = 'npo';
				}
				else if(extensions[ext]) {
					pt = extensions[ext];
				} 
				else {
					pt = "html";
				}
			}
			this.set("playerType", pt);
			return pt;
		},
		
		_silverlightJumpStart : function() {
			var p = this.player,
				state = this.get("state");
			// we made the silverlight player autoplay by default
			// (to load the file)
			// and now we pause it when we did not want that.
			if(p.controller&&state=='PLAYING') {
				this.fire("bufferReady");
				var start = this.get("start");				
				if(!this.get("autoplay")) {
					p.sendEvent('PLAY');
				}
				if(start) {
					p.sendEvent('SCRUB', start);
				}
			} else {
				Y.later(100, this, this._silverlightJumpStart);
			}
		},
		
		_flashJumpStart : function() {
			var p = this.player,
				state = this.get("state"),
				start = this.get("start");
			
			// we made the player autoplay by default
			// (to load the file)
			// and now we pause it when we did not want that.
			if(p) {
				this.fire("bufferReady");
				var start = this.get("start");				
				if(!this.get("autoplay")) {
					p.sendEvent('PLAY');
				}
				if(start) {
					p.sendEvent('SEEK', start);
				}
			} else {
				Y.later(100, this, this._flashJumpStart);
			}
		},	
		
		_flashStateCheck : function() {
			this._changeState(this.player.state);
			Y.later(100, this, this._flashStateCheck);
		},		
		_changeState : function(newState) {
			newState = newState.toUpperCase();
			var oldState = this.get("state");
			
			if(newState&&oldState!==newState) {
				this.set("state", newState);
				Y.log('state: '+newState);
				this.fire("stateChanged", {oldstate:oldState, newstate:newState});
				if(newState=="COMPLETED") {
					this.fire("end");
				}
			}
		},
		
		_flashTimeCheck : function() {
			this._changeCurrentTime(this.player.position);
			Y.later(100, this, this._flashTimeCheck);
		},
		_changeCurrentTime : function(time) {
			var player = this.player;
				
			if(player.currentTime!==time) {
				player.currentTime = time;
				this.fire("timeChange", {time:time});
			}
		}
	});
	
	Y.VideoPlayer = VideoPlayer;
	
}, 'gallery-2010.03.02-18' ,{requires:['node','event','widget']});