// JavaScript Document
/*************************************************
Star Rating System
First Version: 21 November, 2006
Second Version: 17 May, 2007
Author: Ritesh Agrawal (http://php.scripts.psu.edu/rja171/widgets/rating.php)
Inspiration: Will Stuckey's star rating system (http://sandbox.wilstuckey.com/jquery-ratings/)
Half-Star Addition: Karl Swedberg
Demonstration: http://examples.learningjquery.com/rating/
Usage: $('#rating').rating('url-to-post.php', {maxvalue:5, curvalue:0});

arguments
url : required -- post changes to 
options
  increment : 1, // value to increment by
	maxvalue: number of stars
	curvalue: number of selected stars
	

************************************************/

jQuery.fn.rating = function(url, options) {
	
	if(url == null) return;
		
	var settings = {
		url 	  : url,// post changes to 
		increment : 1, 	// value to increment by
		maxvalue  : 5,  // max number of stars
		curvalue  : 0,  // number of selected stars
		ID		  : 0,	// article ID to update rating for
		rated	  : 0,  // number of times already rated
		disable   : 0,	//
		size	  : 11	// star size
	};
	
	if(options) {
		jQuery.extend(settings, options);
	};
  
	//we don't need the cancel button always false
	//jQuery.extend(settings, {cancel: (settings.maxvalue < 5) ? true : false});
	var container = jQuery(this);
	
	jQuery.extend(container, {
		averageRating: settings.curvalue,
		url: settings.url
	});

	settings.increment = (settings.increment < .75) ? .5 : 1;
	var s = 0;
	for(var i= 0; i <= settings.maxvalue ; i++){
		if (i == 0) {
			if(settings.cancel == true){
				var div = '<div class="cancel"><a href="#0" title="Cancel Rating">Cancel Rating</a></div>';
				container.empty().append(div);
			}
		} else {
			var $div = jQuery('<div class="star"></div>')
				.append('<a href="#'+i+'" title="Give it '+i+'/'+settings.maxvalue+'">'+i+'</a>')
				.appendTo(container);

			if (settings.increment == .5) {
				if (s%2) {
					$div.addClass('star-left');
				} else {
					$div.addClass('star-right');
				}
			}
		}
	   
		i=i-1+settings.increment;
		s++;
	}

	//add extra container for tip here:
	var $div = jQuery("<div class='rated' id='rated_"+settings.ID+"'></div>").appendTo(container);
	
	var stars = jQuery(container).children('.star');
	var cancel = jQuery(container).children('.cancel');
	
	if( !settings.disable ){
		stars
			.mouseover(function(){
				event.drain();
				event.fill(this);
			})
			.mouseout(function(){
				event.drain();
				event.reset();
			})
			.focus(function(){
				event.drain();
				event.fill(this);
			})
			.blur(function(){
				event.drain();
				event.reset();
			});
	}

	stars.click(function(){
		//if it is disabled then don't do anything
		if( !settings.disable ){
			settings.curvalue = (stars.index(this) * settings.increment) + settings.increment;
			var starCount = jQuery(this).children('a')[0].href.split('#')[1];
			
			//figure out star sizes from currently displayed rating
			//settings.size = parseInt(jQuery(".star-left").css("width").replace("px",""))*2;
			//if (settings.size == 12)
			//	settings.size = 11;
			
			
			//create the response into an array so we can Stringify it
			var obj = new Object();
			obj['id']=settings.ID;
			obj['rating']=starCount;

			//add fancy effects (yms: 26-09-2007)
			jQuery(container).fadeOut('fast', function() {
				jQuery(container).html("<div class='stars_off'><div class='stars_after' style='width:" + (settings.size*starCount)+"px'></div></div><div class='rated'>thanks for rating!</div>").fadeIn('fast');
				//$("#rated_"+settings.ID).html("thanks!");
				//assume if large stars that in modal - therefor auto-close
				if(settings.size==24)
					var t = setTimeout("tb_remove()", 1500);
			});
			
			jQuery.post(container.url, { "data": JSON.stringify(obj) });
			
			return true;
		}
	});

	// cancel button events
	if(cancel){
		cancel
		.mouseover(function(){
			event.drain();
			jQuery(this).addClass('on');
		})
		.mouseout(function(){
			event.reset();
			jQuery(this).removeClass('on');
		})
		.focus(function(){
			event.drain();
			jQuery(this).addClass('on');
		})
		.blur(function(){
			event.reset();
			jQuery(this).removeClass('on');
		});

		// click events.
		cancel.click(function(){
			event.drain();
			settings.curvalue = 0;
			jQuery.post(container.url, {
				"rating": jQuery(this).children('a')[0].href.split('#')[1], "ID": settings.ID 
			});
			return false;
		});
	}
        
	var event = {
		fill: function(el){ // fill to the current mouse position.
			var index = stars.index(el) + 1;
			stars
			.children('a').css('width', '100%').end()
			.slice(0,index).addClass('hover').end();
			//add tooltip
			jQuery("#rated_"+settings.ID).empty().html(" &nbsp; " + (stars.index(el)+1)/2 + " stars!");
		},
		drain: function() { // drain all the stars.
			stars
			.filter('.on').removeClass('on').end()
			.filter('.hover').removeClass('hover').end();
		},
		reset: function(){ // Reset the stars to the default index.
			stars.slice(0,settings.curvalue / settings.increment).addClass('on').end();
			jQuery("#rated_"+settings.ID).empty().html("rated " + settings.rated + " time(s)");
		}
	};    
	
	event.reset();
	//alert($(container).html());
	return(this);	
};