var _bys = _bys || [];
(function(_bys){
	var setCookie = function(cname,cvalue,exdays)
	{
		  var d = new Date();
		  d.setTime(d.getTime()+(exdays*24*60*60*1000));
		  var expires = "expires="+d.toGMTString();
		  document.cookie = cname + "=" + cvalue + "; " + expires;
	}
	var getCookie = function(cname){
	  var name = cname + "=";
	  var ca = document.cookie.split(';');
	  for(var i=0; i<ca.length; i++){
	    var c = ca[i].trim();
	    if (c.indexOf(name)==0) return c.substring(name.length,c.length);
	  }
	  return "";
	}
	var cookieKey = 'BYIDUID';
	var cookieId = getCookie(cookieKey);
	if(cookieId == ''){
		cookieId = '5a6c443bf9b6255ec3cf505ed4f1489d';
	}
	setCookie(cookieKey,cookieId,365*2);
	var bys = function(arr){
		var _auto = 0;
		var _arr = arr || [];
		var _userId = false;
		var _spreadId = false;
		var _this = this;
		var _isInit = 0;
		var _site = '';
		//推送
		var _pushDataSet = function(dataSet){
			var img = new Image();
			var url = '/statistics/index/push.html?&backintercept=backintercept&';
			var data = {
				BYIDUID:cookieId,
				r:Math.random(),
				user_id:_userId,
				spread_id:_spreadId,
				site_id:_site
			};
			for(var k in data){
				url += "&"+k+"="+data[k];
			}
			url += "&dataSet="+encodeURIComponent(JSON.stringify(dataSet));
			img.src = url;
		}
		//推送所有数据
		var _push = function(){
			var dataSet = _arr;
			_arr = [];
			console.log(dataSet);
			var pushData = [];
			for(var i in dataSet){
				pushData.push(dataSet[i]);
				if(i%5==1){
					_pushDataSet(pushData);
					pushData = [];
				}
			}
			if(pushData.length > 0){
				_pushDataSet(pushData);
			}
		}
		//初始化
		this.init = function(userId,spreadId){
			var userId = userId || 0;
			var spreadId = spreadId || 0;
			_this.setUser(userId,spreadId);
			_isInit = 1;
			if(_arr.length > 0){
				_push();
			}
		}
		//设置用户
		this.setUser = function(userId,spreadId){
			_userId = userId || 0;
			_spreadId = spreadId || 0;
		}
		//添加统计
		this.push = function(){
			for(var i in arguments){
				_arr.push(arguments[i]);
			}
			if(_isInit == 1){
				_push();
			}
		}
		//自动初始化
		if(_auto == 1){
			_this.init();
		}
	}
	if(!(_bys instanceof bys)){
		_bys = new bys(_bys);
	}
	window._bys = _bys;
})(_bys);