/*************************************************
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)
MODIFY BY MARIANO TO SUPPORT CALLBACKS
        email: ragrawal [at] gmail (dot) com
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
    callback:   null,
    cancel : true,
    onerate: 0,
    showonlymode: 0
  };
	
  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
  });
  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 = $('<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++;
  }
	
	var stars = jQuery(container).children('.star');
  var cancel = jQuery(container).children('.cancel');
	
  if (!settings.showonlymode) {
    stars
      .bind("mouseover", function(){
        event.drain();
        event.fill(this);
      })
      .bind("mouseout", function(){
        event.drain();
        event.reset();
      })
      .bind("focus", function(){
        event.drain();
        event.fill(this);
      })
      .bind("blur", function(){
        event.drain();
        event.reset();
      });
    stars.bind("click",
    function(){
  		var val = settings.callback;
    	if (settings.onerate) stars.unbind();
    	if(settings.cancel == true){
        var oldvalue = settings.curvalue;
    	  settings.curvalue = (stars.index(this) * settings.increment) + settings.increment;
        var can_vote = false;
        // if the voter rate lower than 3 we need check if has a dislake tag or agree with a dislike
        if (settings.curvalue<3) {
          $.ajax({
            async: false,
            type: "POST",
            url: "/ajax/ajax_contests.php?action=check_qvoter_againts_dislike",
            data: "entry_id="+val,
            success: function(param) { 
              if (param=="can_vote") can_vote=true; 
            } 
           });
        }
        else can_vote = true;
        if (can_vote==true) jQuery.post(container.url, {"rating": jQuery(this).children('a')[0].href.split('#')[1] }, function(data) { callbackRating(val,data); });
  			else { 
  			  settings.curvalue = oldvalue; 
  			  jQuery(this).addClass('on');
  			  jQuery(this).removeClass('on');
  			  show_not_allow_to_vote_lower_message(val);
  			}
        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;
  		} else {
  		  settings.curvalue = (stars.index(this) * settings.increment) + settings.increment;
  		  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.
			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.
			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();
		}
	};    
	event.reset();
	
	return(this);	
};