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

arguments
url : required -- post changes to
options
	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
      maxvalue  : 5,    // max number of stars
      curvalue  : 0,    // number of selected stars
      setId     : 0,    // Set ID to change Thanks For
      voted     : false // Default that the user hasn't voted yet
  };

  if(options) {
    jQuery.extend(settings, options);
  };

  jQuery.extend(settings, {cancel: (settings.maxvalue > 1) ? true : false});

  var container = jQuery(this);

  jQuery.extend(container, {
      averageRating: settings.curvalue,
      url: settings.url
  });

  jQuery.post(container.url, {
    "m": "getRating"
  }, function (data) {
    var response = JSON.decode(data);
    $("#average-"+settings.setId).html(response.total_avg);
    settings.curvalue = response.total_avg;
    event.reset();
    settings.voted = response.user_voted;
    $("#numVotes-"+settings.setId).html(response.total_votes);
  });

	for(var i= 0; i <= settings.maxvalue ; i++){
		var size = i
        if (i == 0) {
			if(settings.cancel == true){
	             // var div = '<div class="cancel"><a href="#0" title="Cancel Rating">Cancel Rating</a></div>';
				       // container.append(div);
			}
        }
		else {
             var div = '<div class="star"><a href="#'+i+'" title="Give it '+i+'/'+settings.maxvalue+'">'+i+'</a></div>';
			 container.append(div);

        }



	}

	var stars = jQuery(container).children('.star');
    var cancel = jQuery(container).children('.cancel');

    stars
	        .mouseover(function(){
	              if( settings.voted == true ) return false;
                event.drain();
                event.fill(this);
            })
            .mouseout(function(){
              if( settings.voted == true ) return false;
                event.drain();
                event.reset();
            })
            .focus(function(){
              if( settings.voted == true ) return false;
                event.drain();
                event.fill(this)
            })
            .blur(function(){
              if( settings.voted == true ) return false;
                event.drain();
                event.reset();
            });

    stars.click(function(){
		if(settings.cancel == true){
            settings.curvalue = stars.index(this) + 1;
            jQuery.post(container.url, {
                "rating": jQuery(this).children('a')[0].href.split('#')[1]
            }, function (data) {
              var response = JSON.decode(data);
              $("#average-"+settings.setId).html(response.total_avg);
              settings.curvalue = response.total_avg;
              event.reset();
              $("#numVotes-"+settings.setId).html(response.total_votes);
              $("#voted-"+settings.setId).show();
              settings.voted = true;
            });
			return false;
		}
		else if(settings.maxvalue == 1){
			settings.curvalue = (settings.curvalue == 0) ? 1 : 0;
			$(this).toggleClass('on');
			jQuery.post(container.url, {
                "rating": jQuery(this).children('a')[0].href.split('#')[1]
            });
			return false;
		}
		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]
            });
            return false;
        });
	}

	var event = {
		fill: function(el){ // fill to the current mouse position.
		  if( settings.voted == true ) return false;
			var index = stars.index(el) + 1;
			stars
				.children('a').css('width', '100%').end()
				.slice(0,index).addClass('hover').end();
		},
		drain: function() { // drain all the stars.
		  if( settings.voted == true ) return false;
			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).addClass('on').end();
		}
	}
	event.reset();

	return(this);

}