// 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 = {
		// post changes to 
        url: url,
        // value to increment by
		increment: 1,
		// max number of stars
        maxvalue: 5,
        // number of selected stars
		curvalue: 0,
		
		//callback
		callback: options.callback || false
    };
	
    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) {
                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++;

    }

    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.url)
		{
			alert("Dazu musst du eingeloggt sein!");
		}
        if (settings.cancel == true) {
            settings.curvalue = (stars.index(this) * settings.increment) + settings.increment;
            var ratingVal = jQuery(this).children('a')[0].href.split('#')[1];
			
			if(!(typeof settings.callback == "function")) {
			
				jQuery.post(container.url, {
					"rating": ratingVal,
					"area": settings.votearea,
					"cid": settings.votecid
				});
				
				alert("Deine Bewertung wurde gespeichert!");
				
			} else {
			
				settings.callback(ratingVal);	
				
			}
			
            return false;

        } else if (settings.maxvalue == 1) {
            settings.curvalue = (settings.curvalue == 0) ? 1: 0;
            $(this).toggleClass('on');
			var ratingVal = jQuery(this).children('a')[0].href.split('#')[1];
            
			if(!(typeof settings.callback == "function")) {
			
				jQuery.post(container.url, {
					"rating": ratingVal,
					"area": settings.votearea,
					"cid": settings.votecid
				});
				
				alert("Deine Bewertung wurde gespeichert!");
			
			} else {
			
				settings.callback(ratingVal);	
				
			}			
            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);


};