/** Рейтинг заметок в виде звезд jquery.rating.js
 *  http://biznesguide.ru/coding/156.html
 *  Copyright (c) 2011 Шамшур Иван (http://twitter.com/ivanshamshur)
 *  Dual licensed under the MIT and GPL licenses
 */

;(function($){

    $.rating = function(e, o){

        this.options = $.extend({
            fx:         'float',
            image:      '/images/starsd.png',
            stars:      5,
            minimal:    0,
            titles:     [objectL10n.onevote, objectL10n.twovote, objectL10n.manyvote],
            readOnly:   false,
            url:        '',
            type:       'post',
            loader:     '/images/ajax-loader.gif',			
            click:      function(){},
            callback:   function(){}
        }, o || {});

        this.el     = $(e);
        this.left   = 0;
        this.width  = 0;
        this.height = 0;
        this._data  = {};

        var self    = this;

        this.el.find(':hidden').each(function(){

            var $this = $(this);
            self._data[$this.attr('name')] = $this.val();

        });

        // callback
        this._data.action   = 'acf_srf';

        this._data.nonce    = srfajax.nonce;

        this._data.val      = parseFloat(this._data.val) || 0;
        this._data.votes    = parseFloat(this._data.votes) || '';


        if(this._data.val > this.options.stars) this._data.val = this.options.stars;
        if(this._data.val < 0) this._data.val = 0;

        this.old = this._data.val;

        this.vote_wrap      = $('<div class="vote-wrap"></div>');
        this.vote_block     = $('<div class="vote-block"></div>');
        this.vote_hover     = $('<div class="vote-hover"></div>');
        this.vote_stars     = $('<div class="vote-stars"></div>');
        this.vote_active    = $('<div class="vote-active"></div>');
        this.vote_result    = $('<div class="vote-result"></div>');
        this.vote_success   = $('<div class="vote-success"></div>');
        this.loader         = $('<img src="'+this.options.loader+'" alt="load...">');

        this.el.html(this.loader);

        // Загружаем изображение звезд и высчитываем ширину и высоту одной звезды
        var img     = new Image();
        img.src     = this.options.image;
        img.onload  = function() {
        self.width  = this.width; // Ширина одной звезды
        self.height = this.height/3; // Высота одной звезды
        self.init();
        };

    };


    var $r  = $.rating;

    $r.fn   = $r.prototype = {
        rating: '2.0'
    };

    $r.fn.extend = $r.extend = $.extend;

    $r.fn.extend({

        init: function(){

            this.render();

            if(this.options.readOnly) return;

            var self = this, left = 0, width = 0;

            this.vote_hover.bind('mousemove mouseover',function(e){

                if(self.options.readOnly) return;

                var $this = $(this),
                score = 0;

                left    = e.clientX>0 ? e.clientX: e.pageX;
                width   = left - $this.offset().left - 2;

                var max = self.width*self.options.stars,
                min = self.options.minimal*self.width;

                if(width > max) width = max;
                if(width < min) width = min;   

                score = Math.round( width/self.width * 10 ) / 10; //округляем до 1 знака после запятой

                if(self.options.fx == 'half'){
                    width = Math.ceil(width/self.width*2)*self.width/2;          
                }
                else if(self.options.fx != 'float'){                    
                    width = Math.ceil(width/self.width) * self.width;  
                }

                score = Math.round( width/self.width * 10 ) / 10; 

                self.vote_active.css({
                    'width':width,
                    'background-position':'left center'
                });

                self.vote_success.html(objectL10n.yvoice+' '+score);

            })
            .bind('mouseout',function(){
                if(self.options.readOnly) return; 
                self.reset();
                self.vote_success.empty();
            }).
            bind('click.rating',function(){

                if(self.options.readOnly) return;

                var score = Math.round( width/self.width * 10 ) / 10; 

                if(score > self.options.stars) score = self.options.stars;
                if(score < 0) score = 0;

                self.old = self._data.val;
                self._data.val = (self._data.val*self._data.votes +score)/(self._data.votes + 1);
                self._data.val = Math.round( self._data.val * 100 ) / 100;
                self._data.score = score;
                self.vote_success.html(objectL10n.yvoice+' '+score);

                if(self.options.url != ''){
                    self.send();
                }

                self.options.readOnly = true;        
                self.options.click.apply(this,[score]);
            });

        },
        set: function(){
            this.vote_active.css({
                'width':this._data.val*this.width,
                'background-position':'left bottom'
            });
        },
        reset: function(){
            this.vote_active.css({
                'width':this.old*this.width,
                'background-position':'left bottom'
            });
        },
        setvoters: function(){
            this.vote_result.html(this.declOfNum(this._data.votes));  
        },
        render: function(){

            this.el.html(this.vote_wrap.append(
                this.vote_hover.css({
                    padding:    '0 4px',
                    height:     this.height,
                    width:      this.width*this.options.stars
                }),
                this.vote_result.text(this.declOfNum(this._data.votes)),
                this.vote_success
            ));


            this.vote_block.append(
                this.vote_stars.css({
                    height:     this.height,
                    width:      this.width*this.options.stars,
                    background: "url('"+this.options.image+"') left top"
                }),
                this.vote_active.css({
                    height:     this.height,
                    width:      this._data.val*this.width,
                    background: "url('"+this.options.image+"') left bottom"
                })
            ).appendTo(this.vote_hover);

        },
        send: function(score){

            var self = this;
            this.vote_result.html(this.loader);

            this._data.votes++;
            $.ajax({
                url: srfajax.url,
                type: self.options.type,
                data: this._data,
                dataType: 'json',
                success: function(data){
                    if(data.status == 'OK') {
                        self.set();
                    }  
                    else{
                        self._data.votes--;
                        self.reset();
                    }      

                    self.setvoters();

                    if(data.msg)self.vote_success.html(data.msg);

                    if(typeof self.options.callback == 'function'){
                        self.options.callback.apply(self,[data]);
                    }
                }
            });

        },
        declOfNum: function(number){  
            if(number <= 0) return '';
            number  = Math.abs(Math.floor(number));
            cases   = [2, 0, 1, 1, 1, 2];  
            return number+' '+ this.options.titles[ (number%100>4 && number%100<20)? 2 : cases[(number%10<5)?number%10:5] ];  
        }  
    });


    $.fn.rating = function(o){

        if (typeof o == 'string') {
            var instance = $(this).data('rating'), args = Array.prototype.slice.call(arguments, 1);
            return instance[o].apply(instance, args);
        } else {
            return this.each(function() {
                var instance = $(this).data('rating');
                if (instance) {
                    if (o) {
                        $.extend(instance.options, o);
                    }

                    instance.init();

                } else {
                    $(this).data('rating', new $r(this, o));
                }
            });
        }
    }; 
	
})(jQuery);