/**
* PC和手机公共类
* 请不要在此操作dom元素，仅用于封装公共方法
*/

function set_cookie(cname, cvalue, exdays) {
    var d = new Date();
    d.setTime(d.getTime() + (exdays * 24 * 60 * 60 * 1000));
    var expires = "expires="+d.toUTCString();
    document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/";
}

function get_cookie(cname) {
    var name = cname + "=";
    var ca = document.cookie.split(';');
    for(var i = 0; i < ca.length; i++) {
        var c = ca[i];
        while (c.charAt(0) == ' ') {
            c = c.substring(1);
         }
        if (c.indexOf(name)  == 0) {
            return c.substring(name.length, c.length);
         }
    }
    return "";
}

//加载效果
function loading(type=1){

    if(type){
        $('body').prepend('<div id="loading" style="position: absolute;top:0;bottom: 0;left: 0;right: 0;display:flex;justify-content:center;align-items:center"><div style="position: fixed;top:40%;  display: flex;flex-direction: column;justify-content:center;align-items:center;z-index:9999"><img src="http://www.400122.cn/templates/site/public/images/loading.gif" width="37" height="37"><span>加载中</span></div></div>');
    }else{
        $("#loading").remove();
    }
	
}

function alert(text){

	$('body').prepend('<div id="alert" style="position: absolute;top:0;bottom: 0;left: 0;right: 0;display:flex;justify-content:center;"><div style="position: fixed; top:40%; background-color:rgba(0,0,0,0.6);color:#fff; padding: 10px;border-radius:5px; z-index:9999"><span>'+text+'</span></div></div>');
	var alert = $("#alert");
	alert.animate({left:'10px'},100);
	alert.animate({left:'0px'},100);
	alert.animate({left:'10px'},100);
	alert.animate({left:'0px'},100);
	setTimeout(function(){
		alert.remove();
	},3000);
}

function is_mobile(){
    if (/(iPhone|iPad|iPod|iOS|Android)/i.test(navigator.userAgent)) { 
        return 1;
    }else{
        return 0;
    }
}

//JS版的get数据
function input(variable){
    var query = window.location.search.substring(1);
    var vars = query.split("&");
    for (var i=0;i<vars.length;i++) {
               var pair = vars[i].split("=");
               if(pair[0] == variable){return pair[1];}
    }
    return(false);
}

//字符串截取
function sub(str,num,last = ".."){
    return str.substring(0,num)+last;
}

function check(data,type){
  alert(1111);
  return false;
}

class base{
    constructor(){}

    //转为JS使用对象，防止空数据报错
    get parse(){
        return this._json;
    }

    set parse(data){
        if(data != ""){
            this._json = JSON.parse(data);
        }else{
            this._json = "";
        }
    }

    //设置数组类型的cookie  
    set array_cookie(array){

        var merge = new Array();
        var cart_goods = get_cookie(array.name);
        //转为json可用对象，如果是空值会报错，所以做个判断
        if(array.type && cart_goods != ""){
            merge = JSON.parse(cart_goods); 
            merge = merge.concat(array.value);
        }else{
            merge = array.value;
        }

         set_cookie(array.name,JSON.stringify(merge),1);
    }

    ajax_return(url,data,callback){
        loading();
        $.ajax({
            url:url,
            dataType:"json",
            type:"post",
            data:data,
            success:function(data) {
                loading(0);
                callback(data);
            },
            error:function(){
                loading(0);
                alert('（┬_┬）网络错误，请重试或联系客服！');
                set_cookie("cart_goods","",0);
                return false;
            }
        });
    }
}

//购物车、PC、手机
class cart extends base{
    
    constructor(){
        super();
    }

    get goods(){
        return this.put_in_order(this._goods);
    }

    set goods(data){
        if(data != ""){
            this._goods = JSON.parse(data);
        }else{
            this._goods = new Array();
        }
    }
    
    get cart_goods_num(){
       let goods = JSON.parse(get_cookie("cart_goods"));
       return goods.length;
    }

    //过滤多余数组值
    get filter_goods(){
        return this._filter_goods;
    }
    set filter_goods(data){
        this._filter_goods = new Array();
        let data_list = JSON.parse(JSON.stringify(data.goods)); 
        //JS比较蠢的一个问题，即使把一个数组赋值给另一个数组，更改被赋值数组也会更改到第一个数组的值
        //而且更改变量名也不行，只能转为字符串再转成数组对象进行赋值才能解决。
       
        for(let key in data_list){
            data_list[key]['mobal_sku_list'] ="";
            data_list[key]['sku_ids'] ="";
            data_list[key]['logo'] ="";
            data_list[key]['image'] ="";
            data_list[key]['title'] ="";
            data_list[key]['sku_name'] ="";

            //确认提交的，只过滤被选数组
            if(data_list[key]['selecting'] == 1 && data.type == 1){
                 this._filter_goods = this._filter_goods.concat(data_list[key]);
            }

            //不提交全部过滤
            if(data.type == undefined){
                this._filter_goods = this._filter_goods.concat(data_list[key]);
            }
        }
    }

    //把用户多次加入购物车相同SKU的商品去重并增加购买量
    put_in_order(goods){

        goods.sort(function(a, b){return a.sku_data_id-b.sku_data_id});

        for(var key in goods) {
           
           if(goods[Number(key)+1] != undefined){
               if(goods[key]['goods_id'] == goods[Number(key)+1]['goods_id'] && goods[key]['sku_data_id'] == goods[Number(key)+1]['sku_data_id']){
                    
                    goods[key]['num'] = Number(goods[key]['num'])+1;

                    goods.splice(Number(key)+1,1);
                    this.put_in_order(goods);
               }
           }
          
        }

        return goods;
    }

}