export default {
	compareDate:function(d1,d2){
		return d1.getTime()-d2.getTime();
	},
	roundHour:function(date,add){
		add=add||0;
		var h=Math.floor(date/(1000*60*60));
		return (h+add)*1000*60*60;
	},
	diffDate:function(d1,d2,tag){
		tag=tag||"HH";
		var diff=d1-d2;
		if(tag=="HH"){
			return diff/(1000*60*60);
		}
		else if(tag=="mm"){
			return diff/(1000*60);
		}
	},
	parseDate:function(str){
		str=str.replace(/-/g,"/");
		return new Date(str);
	},
	format:function(millis,fmt){
		fmt=fmt||"MM.dd HH:00";
		var date=new Date(millis);
		if(fmt=="MM.dd HH:00"){
			return (date.getMonth()+1)+"."+date.getDate()+" "+date.getHours()+":00";
		}
		if(fmt=="MM.dd HH:mm"){
			return (date.getMonth()+1)+"."+date.getDate()+" "+date.getHours()+":"+date.getMinutes();
		}
		if(fmt=="MM.dd HH:mm:ss"){
			return (date.getMonth()+1)+"."+date.getDate()+" "+date.getHours()+":"+date.getMinutes()+":"+date.getSeconds();
		}
		return null;
	},
	getProjValDevider:function(minVal,maxVal,count){
		var opts=[0.1,0.2,0.5,1,2,3,4,5,10,15,20,25,30,35,40,45,50];
		var devider=(maxVal-minVal)/count;
		if(devider>50){
			return Math.ceil(devider/50)*50;
		}
		else{
			var idx=this.search(devider,opts);
			return opts[idx];
		}
	},
	  
	search:function(item,ary){
		for (var i= 0, len= ary.length; i < len; i++) {
				if (ary[i]>=item) {
					return i;
				}
			}
			return ary.length - 1;	
	},
	waveFilter:function(datas,winsize){
		let fileterWin=[]
		let sumWin=0
		let outItm=null
		let rst=datas.map((data,index)=>{
			if(index>=winsize){
				outItm=fileterWin.shift()
				sumWin-=outItm[1]
			}
			fileterWin.push(data)
			sumWin+=data[1]
			
			return [data[0],sumWin/fileterWin.length]
			
		})
		return rst
	}
}