/**
 * RabidRatings - Simple and Pretty Ratings for Everyone
 * JavaScript functionality requires MooTools version 1.2 <http://www.mootools.net>.
 * 
 * Full package available at <http://widgets.rabidlabs.net/ratings>.
 *
 * NOTE: The included JavaScript WILL ONLY WORK WITH MOOTOOLS.  It will not work if any other JavaScript
 * framework is present on the page.
 *
 * Current MooTools version: 1.2
 *
 * @author Michelle Steigerwalt <http://www.msteigerwalt.com>
 * @copyright 2007, 2008 Michelle Steigerwalt
 * @license LGPL 2.1 <http://creativecommons.org/licenses/LGPL/2.1/>
 */

var RabidRatings = new Class({

	Implements: Options,
	
	options: {
		url: null,
		leftMargin: 0,  /* The width in pixels of the margin before the stars. */
		starWidth: 20,  /* The width in pixels of each star. */
		starMargin: 0,  /* The width in pixels between each star. */
		scale: 5,       /* It's a five-star scale. */
		snap: 1,         /* Will snap to the nearest star (can be made a decimal, too). */
		enabled: true
	},
	
	initialize: function(options) {
		
		this.setOptions(options);
		var activeColor = this.options.activeColor;
		var votedColor  = this.options.votedColor;
		var fillColor   = this.options.fillColor;

		$$('.rabidRating').each(function(el) 
		{
		el.setStyles({'display':'block'});
		//Does this if the browser is NOT IE6. IE6 users don't deserve fancy ratings. >:(
		if (true || !Browser.Engine.trident4) {
			el.id = el.getAttribute('id');
			el.wrapper = el.getElement('.wrapper');
			el.textEl = el.getElement('.ratingText');
			el.offset = el.getPosition().x;
			el.fill = el.getElement('.ratingFill');
			el.starPercent = this.getStarPercent(el.id);
			el.ratableId   = this.getRatableId(el.id);
			this.fillVote(el.starPercent, el);
			el.currentFill = this.getFillPercent(el.starPercent);
			el.entFille = el.currentFill;
			el.morphFx = new Fx.Morph(el.fill, {'link':'chain'});
			el.widthFx = new Fx.Tween(el.fill, {'property':'width','link': 'chain'});
			
			if (Browser.Engine.trident4) {
        el.fill.setStyle('position', 'relative');
        el.stars = el.getElement('.ratingStars');
        el.stars.setStyles({ 'position': 'absolute', 'top': 0, 'left': 0 });
			}

			el.mouseCrap = function(e) 
			{
			   obj = el;
			   curleft = 0;
			   if (obj.offsetParent) 
			   {
			     do {
			      curleft += obj.offsetLeft;
			     } while (obj = obj.offsetParent);
			     
			   }
			   
			   var fill = e.client.x - curleft; //el.offset;
				 var fillPercent = this.getVotePercent(fill);
				 var step;
				 if (this.options.snap === 0) step = 1;
				 else step = (100 / this.options.scale) * this.options.snap;
				 var nextStep = Math.floor(fillPercent / step) + 1;
				
				 this.fillVote(nextStep * step, el);
			}.bind(this);

      if (this.options.enabled)
      {
      
			el.wrapper.addEvent('mouseenter', function(e) { 
				el.morphFx.start('.rabidRating .ratingActive');
				el.wrapper.addEvent('mousemove', el.mouseCrap);
			});

			el.wrapper.addEvent('mouseleave', function(e) {
				el.removeEvent(el.mouseCrap);
				if (!window.ie6)
        {
				el.morphFx.start('.rabidRating .ratingFill');
        };
				el.widthFx.start(el.currentFill);
			});

			el.wrapper.addEvent('click', function(e) {
			  el.entFill = el.currentFill;
			  
				el.currentFill = el.newFill;
				//el.morphFx.start('.rabidRating .ratingVoted');
				el.wrapper.removeEvents();
				el.addClass('ratingVoted');
				el.textEl.addClass('loading');
				var votePercent = this.getVotePercent(el.newFill);
				if (this.options.url != null) 
				{
				  ajaxRequest = new authRequest(this.options.url.setQueryValues({'ajax': 'yes'}), '', {onSuccess:el.updateText, onFailure:el.clear, onClose:el.close});
    
          ajaxRequest.request({vote:votePercent,id:el.ratableId})
				  	
				}
			}.bind(this));
      }
			el.updateText = function(text) {
			 	error = text.split('ERROR:')[1];
				el.textEl.removeClass('loading');
				el.addClass('ratingVoted');
				//el.morphFx.start('.rabidRating .ratingVoted');
        
				if (error) { el.showError(error); return false; }
				alert(text);
				//el.textEl.set('text', text);
			};
			
			el.clear = function() {
        el.textEl.removeClass('loading');
        el.currentFill = el.entFill;
        el.removeClass('ratingVoted');
      };
      
      el.close = function() {
        el.clear();
      };

			el.showError = function(error) {
				el.textEl.addClass('ratingError');
				oldTxt = el.textEl.get('text');
				el.textEl.set('text', error);
				(function() {
					el.textEl.set('text', oldTxt);
					el.textEl.removeClass('ratingError');
				}).delay(1000);
			};
		} else {
			//Replaces all the fancy with a text description of the votes for IE6.
			//If you want IE6 users to have something fancier to look at, add it here.
			var plain = el.getElement('.ratingText').inject(el, 'before');
			el.remove();
		}
		}.bind(this));
	},

	fillVote: function(percent, el) {
		el.newFill = this.getFillPercent(percent);
		if (this.getVotePercent(el.newFill) > 100) { el.newFill = this.getFillPercent(100); }
		
		
		el.fill.setStyle('width', el.newFill);
	},

	getStarPercent: function(id) {
		/* Format = anyStringHere-<id>-<float(currentStars)>_(scale); 
		 * Example: rabidRatings-5-3_5 //Primary key id = 5, 3/5 stars. */
		var stars = id.match(/(\d*)-(\d*\.?\d+)_(\d*\.?\d+)$/);
		var ratableId = stars[1].toFloat();
		var score = stars[2].toFloat();
		var scale = stars[3].toFloat();
		var percent =  (score / scale) * 100;
		return percent;
	},

	getFillPercent: function (starPercent) {
		return (starPercent/100)*((this.options.starWidth+this.options.starMargin)*this.options.scale) + this.options.leftMargin;
	},

	getVotePercent: function(divPosition) {
		var starsWidth = (this.options.starWidth+this.options.starMargin)*this.options.scale;
		var offset = this.options.leftMargin;
		var starPosition = divPosition - this.options.leftMargin;
		var percent = (starPosition / starsWidth * 100).round(2);
		return percent;
	},

	getRatableId: function(id) {
		var stars = id.match(/(\d*)-(\d*\.?\d+)_(\d*\.?\d+)$/);
		return stars[1];
	}

});