/* Basado en  jquery YouTube grabber, de systemseven (http://www.systemsevendesigns.com) */
(function($){
	$.fn.youTube = function(options) {
		var defaults = {
			results : 6								/* number of results to return / display */
			,orderBy : 'published'					/* what to order the results by */
			,query  : null							/* query to run against youTube videos */
			,author : null							/* author of the video */
			,showRatings : null						/* Display the rating stars assigns a class of 00,05,10,15,20,25,30,35,40,45,50 */
			,showNumRatings : null					/* Displays the actual number of ratings */
			,showViews : null						/* show number of views for the video */
			,showDescription : null					/* show a clipped version of the video description */
			,descriptionLength : 150				/* length of the description to bring back, will append ... to the end */
			,thumbnail : 'small'					/* small: 120x90 | large: 480 x 360 */
		}; options = $.extend(defaults, options);
		
		return this.each(function(){
			var container = $(this);
			requestYouTubeVideos();
			
			function requestYouTubeVideos()
			{
				var reqUrl = 'http://gdata.youtube.com/feeds/api/videos?alt=json&max-results='+options.results;
				if(options.author != null)	{reqUrl += '&author='+options.author;}
				if(options.orderBy != null)	{reqUrl += '&orderby='+options.orderBy;}
				if(options.query != null)	{reqUrl += '&q='+options.query;}
				
				$.ajax({
				    type: "GET",
				    url: reqUrl,
				    dataType: 'jsonp',
				    success: onYouTubeSuccess,
					error: onYouTubeError
				})
			}

			function onYouTubeSuccess(result)
			{
      			var feed = result.feed;
      			var rfeed = feed.entry || [];
				var relVideos = [];
				if(rfeed.length > 0){
					$(rfeed).each(function(i) {
					
						relVideos[i] = [];
						relVideos[i].id = stripFeature(rfeed[i].link[0].href.substring(rfeed[i].link[0].href.indexOf('=')+1,rfeed[i].link[0].href.length));
						relVideos[i].url = stripFeature(rfeed[i].link[0].href);
						relVideos[i].title = rfeed[i].title.$t;
						
						var index = (options.thumbnail == 'large') ? rfeed[i].media$group.media$thumbnail.length-1 : 0;
								
						relVideos[i].thumbnail = rfeed[i].media$group.media$thumbnail[index].url;
						relVideos[i].description = rfeed[i].media$group.media$description.$t;
						relVideos[i].author = rfeed[i].author[0].name.$t;
								
						if(rfeed[i].yt$statistics){ relVideos[i].views = rfeed[i].yt$statistics.viewCount; }
						else if(!rfeed[i].yt$statistics){ relVideos[i].views = '0';	}

						if(rfeed[i].gd$rating){
							relVideos[i].rating = rfeed[i].gd$rating.average;
							relVideos[i].numRaters = rfeed[i].gd$rating.numRaters;
						}
						else if(!rfeed[i].gd$rating){
							relVideos[i].rating = '0.00';
							relVideos[i].numRaters = '0';
						}
					
					}).ready(function(){
					
						relVideos.sort(arraySort);
						if (relVideos.length > 0) {
							$(relVideos).each(function(i){
								
								numRatings = (relVideos[i].numRaters != 1) ? 'ratings' : 'rating';
								numStars = getStarRating(relVideos[i].rating);
								container.append('<div class="video-item">');
								videoItem = container.find('.video-item:last');
								
								videoItem.append('<div class="video-thumb"><a href="'+relVideos[i].url+'" rel="box" target="_blank" title="'+relVideos[i].title+'"><img src="' + relVideos[i].thumbnail + '" alt="' + relVideos[i].title + '" /><div></div></a></div>');
											
											videoItem.append('<div class="video-info">');
											videoInfo = videoItem.find('.video-info');
											videoInfo.append('<a href="'+relVideos[i].url+'" target="_blank" title="'+relVideos[i].title+'" class="video-title">' + relVideos[i].title + '</a>');
											if(options.showDescription){
												videoInfo.append('<p class="video-desc">'+setDescription(relVideos[i].description)+'</p>');
											}
											if (options.showRatings) {
												videoInfo.append('<div class="video-rating-'+numStars+'"></div>');
											}
											if (options.showNumRatings){
												videoInfo.append('<div class="video-num-ratings">'+relVideos[i].numRaters+' ratings</div>');
											}
											if (options.showViews) {
												videoInfo.append('<p class="video-num-views">' + relVideos[i].views + ' views</p>');
											}
											
									});
									container.append('<div style="clear:both"></div>');
									if (options.linkAction == 'modal') {
										$('.modalvideo').videoDialog({});
									}
								}
						  });							
						}else{
							/* if we have no youtube videos returned, let's hide the container */
							container.hide();
						}
						
			}
			
			function onYouTubeError(result)
			{
				container.append('<p>Error conectando con YouTube</p>');
			}
			
			function setDescription(desc){
				if(desc.length > options.descriptionLength){ return desc.substring(0,options.descriptionLength) + '...'	}
				else{ return desc; }
			}			
			
			function arraySort(a,b){
				if (a.title < b.title){ return -1; }
				else if (a.title > b.title){ return 1; }
				else{ return 0;	}
			}

			function stripFeature(vidID){
				var featureLoc = vidID.indexOf('&feature=youtube_gdata');
				if(featureLoc >= 0){ return vidID.substring(0,featureLoc); }
				else { return vidID; }
			}

			function getStarRating(rating){
				if (rating >= 5.00){ return '50'; }
				else if(rating >=4.50 && rating <= 4.99){ return '45'; }
				else if(rating >=4.00 && rating <=4.49){ return '40'; }
				else if(rating >=3.50 && rating <= 3.99){ return '35'; }
				else if(rating >=3.00 && rating <= 3.49){ return '30'; }
				else if(rating >=2.50 && rating <= 2.99){ return '25'; }
				else if(rating >=2.00 && rating <= 2.49){ return '20'; }
				else if(rating >=1.50 && rating <= 1.99){ return '15'; }
				else if(rating >= 1.00 && rating <= 1.49){ return '10'; }
				else if(rating >=0.50 && rating <= 0.99){ return '05'; }
				else if(rating == 0.00){ return '00'; }
			}
			
		});
	};
})(jQuery);