/*
 * jQuery Star Rating plugin
 * Version 1.0.0 (10/02/2009)
 * @requires jQuery v1.2.1 or later
 *
 * Copyright (c) 2009 Aleksandar Pavic
 * http://acosonic.com/jquery_star_rating/

USAGE:
	$(  ).starRatingImages(); 	//uses images
		or
	$(  ).starRatingBg(); 		//uses 1 background image
 */
( function($) {

	$.fn.starRating = function(options) {

		var opts = $.extend( {}, $.fn.starRating.defaults, options);

		return this.each( function() {
			$this = $(this);
			var o = $.meta ? $.extend( {}, opts, $this.data()) : opts;
			var ratingID = $(this).attr('id'); // grab id of element star
												// rating is used on
				if (o.clickable == false) { // read settings (enabled/disabled)
											// from configuration or starRating
											// object if it's already used
					$.fn.starRating.clickable[ratingID] = false;
				} else if ($.fn.starRating.clickable[ratingID] != false)
					$.fn.starRating.clickable[ratingID] = true;
				if (o.hoverable == false) { // read settings (enabled/disabled)
											// from configuration or starRating
											// object if it's already used
					$.fn.starRating.hoverable[ratingID] = false;
				} else if ($.fn.starRating.hoverable[ratingID] != false) {
					$.fn.starRating.hoverable[ratingID] = true;
					// add hover functionality to stars holder
					// $this.hover( function() {console.log("jos");}, function()
					// { $.fn.starRating.updateStars(o.rating,ratingID);});
					$this.bind('mouseout', function() {
						$.fn.starRating.updateStars(o.rating, ratingID);
					});
				}
				$.fn.starRating.opts[ratingID] = o; // remember the settings for
													// rate function
				// o.rating = Math.round(o.rating);
				$.fn.starRating.drawStars(o.rating, ratingID);
			});
	};

	// rating function, performs ajax rating
	$.fn.starRating.rate = function(val, ratingID) {
		
		
		var o = $.fn.starRating.opts[ratingID];
		var paramId = o.paramId;
		var paramValue = o.paramValue;
		// ajax request with callback
		var params = {};
		params[paramId] = ratingID;
		params[paramValue] = val;
		for (param in o.customParams) {
			params[param] = o.customParams[param];
		}
		
		if (typeof (o.before) == 'function'){
			params = o.before(params);
		}
		
		$.get(o.ratingUrl, params, function(data) { // perform ajax voting and
													// update stars with new
													// result
					if (data != '0') {
						$.fn.starRating.clickable[ratingID] = false;
						$.fn.starRating.hoverable[ratingID] = false;
						$("#" + ratingID + "no").html(o.rating);
						$.fn.starRating.updateStars(data, ratingID);
						if (typeof (o.success) == 'function')
							o.success();
					} else if (typeof (o.failure) == 'function')
						o.failure();
				});
	};
	

	$.fn.starRating.drawStars = function(rate, ratingID) {
		var o = $.fn.starRating.opts[ratingID];
		for ( var i = 0; i < o.ratingStars; i++) { // create stars for voting
			var j = i + 1;
			var star = document.createElement('img');
			if (j <= rate)
				star.src = o.ratedImage;
			else
				star.src = o.basicImage;
			star.id = ratingID + "StarRating" + j;
			star.alt = j;
			star.title = j;
			$(star).attr('class', o.clickable ? 'active' : 'unactive');
			var $star = $(star);
			this.star = $star;
			$this.append($star);
			// add onclick voting functionality if click functionality is
			// enabled
			if ($.fn.starRating.clickable[ratingID] == true) {
				$('#' + star.id).click( function() {
					$.fn.starRating.hoverable[ratingID] = false;
					$this.unbind('mouseout');
					if ($.fn.starRating.clickable[ratingID] == true)
						$.fn.starRating.rate($(this).attr('title'), ratingID);
					return false;
				});
			}

			// add hover functionality if click functionality is enabled
			if ($.fn.starRating.hoverable[ratingID] == true) {
				$('#' + star.id)
						.hover(
								function() {
									if ($.fn.starRating.hoverable[ratingID] == true) {
										$("#" + ratingID + "no").html(
												$(this).attr('alt'));
										if ($(this).attr("src") == o.basicImage
												|| $(this).attr("src") == o.ratedImage) {
											$(this).attr("src", o.hoverImage);
											$(this).prevAll().attr("src",
													o.hoverImage);
										} else {
											if ($(this).attr('alt') <= rate) { // if
																				// you
																				// are
																				// hovering
																				// a
																				// rated
																				// star
												$(this).attr("src",
														o.ratedImage);
												$(this)
														.nextAll(
																function() {
																	if ($(this)
																			.attr(
																					'alt') <= rate)
																		$(this)
																				.attr(
																						"src",
																						o.ratedImage);
																	else
																		$(this)
																				.attr(
																						"src",
																						o.basicImage);
																});
											} else {
												if ($(this).attr('alt') >= rate) { // if
																					// you
																					// are
																					// hovering
																					// unrated
																					// star
													$(this)
															.nextAll()
															.attr(
																	"src",
																	o.basicImage);
												}

											}
										}
									}
								},
								function() {
									if ($.fn.starRating.hoverable[ratingID] == true) {
										if ($(this).attr('alt') <= rate)
											$(this).attr("src", o.ratedImage);
										else
											$(this).attr("src", o.basicImage);
									}
								});
			}

		}
		if (o.showNumber) { // show value as number after the stars ***** 4
			var numb = document.createElement('p');
			numb.id = ratingID + "no";
			$this.append(numb);
			$("#" + numb.id).html(o.rating);
		}
	}

	$.fn.starRating.updateStars = function(rate, ratingID) {
		var o = $.fn.starRating.opts[ratingID];
		$("#" + ratingID + "no").html(rate);
		for ( var i = 0; i < o.ratingStars; i++) {
			var j = i + 1;
			if (j <= rate)
				$("#" + ratingID + "StarRating" + j).attr('src', o.ratedImage);
			else
				$("#" + ratingID + "StarRating" + j).attr('src', o.basicImage);
		}
	}

	$.fn.starRating.clickable = [];
	$.fn.starRating.hoverable = [];
	$.fn.starRating.opts = {};

	$.fn.starRating.defaults = {
		basicImage :'star.gif',
		ratedImage :'star_hover.gif',
		hoverImage :'star_blue.gif',
		ratingStars :5, // how much stars to draw
		ratingUrl :'rate.php', //url for ajax request which will manage  ratings
		paramValue :'rate', //parameter holding the value of rating ?rate=4
		paramId :'id', //parameter holding the id of rate ?rate=4&id=photo442
		customParams : {}, //lets you use custom params for request for example ?rate=4&id=photo442&type=photos ...
		clickable :true, //click enabled or disabled
		hoverable :true, //hover effect enabled or disabled
		before :null,
		success :null, //callback on successful rating
		failure :null, //callback on failure rating
		rating :0, //current rating
		showNumber :false
	//show number after stars
	};

})(jQuery);