/*************************************************
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
	    rating_art: 'unbekannt',	// what will rated
	    increment : 0.5,			// value to increment by
	    maxvalue  : 5,				// max number of stars
	    curvalue  : 0				// number of selected stars
	};
	
  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="'+settings.rating_art+' mit 0 von '+settings.maxvalue+' Sternen bewerten">'+i+'</a></div>';
        container.empty().append(div);
      }
    } else {
      var $div = $('<div class="star"></div>')
        .append('<a href="#'+i+'" title="'+settings.rating_art+' mit '+i+' von '+settings.maxvalue+' Sternen bewerten">'+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');
	
  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(settings.cancel == true){
      		settings.curvalue = (stars.index(this) * settings.increment) + settings.increment;
      		jQuery.post(container.url, {
        		"rating": jQuery(this).children('a')[0].href.split('#')[1] 
			});
			window.setTimeout("location.reload()", 100);
			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]
			});
			window.setTimeout("location.reload()", 100);
			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] 
		});
		window.setTimeout("location.reload()", 100);
		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);	

};