/** Customized for CWW **/

var Playlist = function(instance, playlist, options) {
		var self = this;

		this.instance = instance; // String: To associate specific HTML with this playlist
		this.playlist = playlist; // Array of Objects: The playlist
		this.options = options; // Object: The jPlayer constructor options for this playlist

		this.current = 0;

		this.cssId = {
			jPlayer: "jquery_jplayer_",
			interface: "jp_interface_",
			playlist: "jp_playlist_"
		};
		this.cssSelector = {};

		$.each(this.cssId, function(entity, id) {
			self.cssSelector[entity] = "#" + id + self.instance;
		});

		if(!this.options.cssSelectorAncestor) {
			this.options.cssSelectorAncestor = this.cssSelector.interface;
		}

		$(this.cssSelector.jPlayer).jPlayer(this.options);

		$(this.cssSelector.interface + " .jp-previous").click(function() {
			self.playlistPrev();
			$(this).blur();
			return false;
		});

		$(this.cssSelector.interface + " .jp-next").click(function() {
			self.playlistNext();
			$(this).blur();
			return false;
		});
	};

	Playlist.prototype = {
		displayPlaylist: function(trim_length) {
			var self = this;
			$(this.cssSelector.playlist+" div.items").empty();
			for (i=0; i < this.playlist.length; i++) {
			
				// CWW Custom for audio wedge ////////////////////////////////////////////////////////////////
				if(i%3 === 0){
					$(this.cssSelector.playlist+" div.items").append("<div class=\"jp-playlist-group\"></div>");
				}
				
				listItem = (i === this.playlist.length - 1) ? "<div class='jp-playlist-element jp-playlist-last'>" : "<div class=\"jp-playlist-element border_bottom\">";
				
				if(this.playlist[i].name.length > trim_length){
					var track_name = $.trim(this.playlist[i].name.substring(0, trim_length - 3)) + "...";
				} else {
					var track_name = this.playlist[i].name;
				}
				if(this.playlist[i].artist.length > trim_length){
					var artist_name = $.trim(this.playlist[i].artist.substring(0, trim_length - 3)) + "...";
				} else {
					var artist_name = this.playlist[i].artist;
				}
				listItem += 
				"<a href='#' id='" + this.cssId.playlist + this.instance + "_item_" + i +"' tabindex='1'>" + 
					"<div class='wedge_element'>" +
						"<div class='jp-playlist-image'><img src='" + this.playlist[i].poster + "' alt='" + this.playlist[i].name + "' height='40' width='50'></div>" +
						"<div class='jp-playlist-meta-data'>" +
							"<div class='jp-playlist-name'>" + track_name + "</div>" +
							"<div class='jp-playlist-artist'>" + artist_name + "</div>" +
							"<div class='jp-playlist-duration'>" + this.playlist[i].duration + "</div>" +
						"</div>" +
						"<div class='clear'></div>" +
					"</div>"+
				"</a>";
				// old version
				//listItem += (i === this.playlist.length-1) ? "<li class='jp-playlist-last'>" : "<li>";
				//listItem += "<a href='#' id='" + this.cssId.playlist + this.instance + "_item_" + i +"' tabindex='1'>"+ this.playlist[i].name +"</a>";
				// end CWW Custom //////////////////////////////////////////////////////////////////////

				// Create links to free media
				if(this.playlist[i].free) {
					var first = true;
					listItem += "<div class='jp-free-media'>(";
					$.each(this.playlist[i], function(property,value) {
						if($.jPlayer.prototype.format[property]) { // Check property is a media format.
							if(first) {
								first = false;
							} else {
								listItem += " | ";
							}
							listItem += "<a id='" + self.cssId.playlist + self.instance + "_item_" + i + "_" + property + "' href='" + value + "' tabindex='1'>" + property + "</a>";
						}
					});
					listItem += ")</span>";
				}

				// CWW Custom for audio wedge ////////////////////////////////////////////////////////////////
				listItem += "</div>";
				// old version
				//listItem += "</li>";
				// end CWW Custom //////////////////////////////////////////////////////////////////////

				// Associate playlist items with their media
				$(this.cssSelector.playlist+" div.items div.jp-playlist-group:last-child").append(listItem);
				$(this.cssSelector.playlist + "_item_" + i).data("index", i).click(function() {
					var index = $(this).data("index");
					if(self.current !== index) {
						self.playlistChange(index);
					} else {
						$(self.cssSelector.jPlayer).jPlayer("play");
					}
					$(this).blur();
					return false;
				});

				// Disable free media links to force access via right click
				if(this.playlist[i].free) {
					$.each(this.playlist[i], function(property,value) {
						if($.jPlayer.prototype.format[property]) { // Check property is a media format.
							$(self.cssSelector.playlist + "_item_" + i + "_" + property).data("index", i).click(function() {
								var index = $(this).data("index");
								$(self.cssSelector.playlist + "_item_" + index).click();
								$(this).blur();
								return false;
							});
						}
					});
				}
			}
		},
		playlistInit: function(autoplay) {
			if(autoplay) {
				this.playlistChange(this.current);
			} else {
				this.playlistConfig(this.current);
			}
		},
		playlistConfig: function(index) {
			$(this.cssSelector.playlist + "_item_" + this.current).removeClass("jp-playlist-current").parent().removeClass("jp-playlist-current");
			$(this.cssSelector.playlist + "_item_" + index).addClass("jp-playlist-current").parent().addClass("jp-playlist-current");
			this.current = index;
			$(this.cssSelector.jPlayer).jPlayer("setMedia", this.playlist[this.current]);
		},
		playlistChange: function(index) {
			this.playlistConfig(index);
			$(this.cssSelector.jPlayer).jPlayer("play");
		},
		playlistNext: function() {
			var index = (this.current + 1 < this.playlist.length) ? this.current + 1 : 0;
			this.playlistChange(index);
		},
		playlistPrev: function() {
			var index = (this.current - 1 >= 0) ? this.current - 1 : this.playlist.length - 1;
			this.playlistChange(index);
		}
	};