/**
 * @author Sun Haihua<gmyspl@gmail.com>
 * @since  2016/1/21
 */
 $(function () {
     Utility.so("Utility.Scroll", (function () {
         var scrollConfig = {
           direction:{
             UP     : 0,
             DOWN   : 1,
             LEFT   : 2,
             RIGHT  : 3
           },
           def:{
             warp:'scroll',
             cnt:'scroll-cnt',
             item:'scroll-item',
             direction:0,
             spceTimer:false
           },
           timmer:50
         };
         var hideDiv = Utility.autoId('Agrij-scroll-hide-div-');
         $(document.body).append('<div id="'+hideDiv+'" style="overflow:hidden;display:block;height:0px;width:0px;"></div>');
         hideDiv = $("#"+hideDiv);

         var timmer = null;
         var timmerTask = [];

         function startGlobalTimer(){
           if(timmer)return;
           timmer = setInterval(function(){
				for(var i in timmerTask){
					try{
						///console.log(timmerTask);
						timmerTask[i].scrolling.call(timmerTask[i]);
					}catch(e){
						//console.log("task error:",e);
					}
				}
           },scrollConfig.timmer);
         };

         var scroll = function(config){
           this.pause = false;
           this.id = Utility.autoId('Agrij-scroll-');
           this.conf = this.parseConf(config);
           this.init();
           this.scanHtmlConf();
         };

         scroll.prototype.init = function(config){
           if(typeof this.conf.warp == 'string'){
             this.warp = $($('.'+this.conf.warp).get(0));
           }else{
             this.warp = $(this.conf.warp);
           }
		         this.debug = this.warp.attr('isdebug');
           this.warp.attr('id',this.id);
           this.warp.html('<div id="'+this.id+"_cnt"+'">'+this.warp.html()+'</div>');
           this.initItems();

           this.prepareScroll();
           this.addToTimer();
         };

         scroll.prototype.addToTimer = function(){
           if(this.conf.spceTimer)
             this.timmer = setInterval(function(){self.scrolling.call(self);},scrollConfig.timmer);
           else
             timmerTask.push(this);

           var self = this;

           this.warp.hover(function(){
             if(self.spceTimer)clearInterval(self.timmer);
             else self.pause = true;
           },function(){
             if(self.spceTimer)self.timmer = setInterval(function(){self.scrolling.call(self);},scrollConfig.timmer);
             else self.pause = false;
           });
           startGlobalTimer();
         };

         scroll.prototype.prepareScroll = function(){
           [this.up,this.down,this.left,this.right][this.conf.direction].call(this);
         };

         scroll.prototype.up = function(){

           if(this.size.h>this.items.c*this.items.h)
                  return this.scrolling = function(){};
           this.cnt.obj.append(this.cnt.obj.html());
           var cnt = this.cnt.obj.get(0);
           var max = this.cnt.h;
           var tmp = 0;
           this.scrolling = function(){
			     try{
                  //console.log("===>",this.warp,tmp,max,this.warp.get(0).scrollTop);
  				       if(this.pause)return;
  				       tmp++;
  				       if(tmp>(max*2-this.warp.height()))tmp = 0;
  				       this.warp.get(0).scrollTop = tmp;
			    }catch(e){
			    }

           };
         };

         scroll.prototype.down = function(){

         };

         scroll.prototype.left = function(){

         };

         scroll.prototype.right = function(){

         };

         scroll.prototype.initItems = function(){
           this.size = {w:this.warp.width(), h:this.warp.height()};
           this.cnt = {
             obj : this.$("#"+this.id+"_cnt"),
             w   : this.$("#"+this.id+"_cnt").width(),
             h   : this.$("#"+this.id+"_cnt").height()
           };
           this.items = {
             w : this.$('.'+this.conf.item).width(),
             h : this.$('.'+this.conf.item).height(),
             c : this.$('.'+this.conf.item).length
           };
         };

         scroll.prototype.$ = function(slt){
           return this.warp.find(slt);
         };

         scroll.prototype.parseConf = function(conf){
           var ret = {
             warp:scrollConfig.def['warp'],
             cnt:scrollConfig.def['cnt'],
             item:scrollConfig.def['item'],
             direction:scrollConfig.def['direction'],
             spceTimer:scrollConfig.def['spceTimer']
           };
           for(var i in conf)
             ret[i] = conf[i];
           return ret;
         };

         scroll.prototype.scanHtmlConf = function(){
           if(this.warp.attr('scroll'))
           this.conf.direction = Utility.defget(
               this.warp.attr('scroll').toUpperCase(),
               scrollConfig.direction,
               0);
           if(this.warp.attr('spce-timer'))
           this.conf.spceTimer = Utility.defget(
               this.warp.attr('spce-timer').toUpperCase(),
               {'true':true,'false':false},
               false);
         };
		 window.getScrollTask = function(){
			 	return [timmerTask];
			 }
         return scroll;
     })());
     $(".scroll-controller").each(function(){
       new Utility.Scroll({warp:this});
     });
 });