美团外卖小程序_美团代码行数

var app = getApp();
var server = require('../../utils/server.js');
Page({
 
  /**
   * 页面的初始数据
   */
  data: {
    cart:{
      count:0,
      total:0
    },
    cartList:[],
    localList:[],
    isFreshing:false,
    loding:false,
    count:1,
    sum : 0,
    showCartDetail:false,
    defaultImg: 'http://global.zuzuche.com/assets/images/common/zzc-logo.png',
  },
 
  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
    var shopId = options.id;
    var shop = server.selectedShopDetail(shopId);
    this.setData({
      shopId : shopId,
      shop : shop,
      sum : shop.menu.length
    });
    var menu = Array(shop.menu[0]);
    this.setData({
      menu: menu
    });
    console.log("myShop");
    console.log(this.data.shop);
    console.log(this.data.menu);
    //加载静态订单数据
    var res = wx.getStorageSync('orderList');
    if(res){
      if(res.count<0)res.count=0;
      this.setData({
        cart:{
          count:res.count==null?0:res.count,
          total:res.total
        }
      });
      
      console.log("shop---Loading");
      console.log(res.count,res.total,res.cartList);
      console.log(this.data.cart.count, this.data.cart.total);
      console.log("shop---end");
      if(!server.isEmptyObject(res.cartList)){
        this.setData({
          cartList:res.cartList,
          localList:server.filterEmptyObject(res.cartList)
        });
      }
    }
 
    //防止未定义数组的形式
    if (typeof this.data.cartList[this.data.shopId] == 'undefined' || server.isEmptyObject(this.data.cartList[this.data.shopId])) {
      var cartList = this.data.cartList;
      cartList[this.data.shopId] = [];
      this.setData({
        cartList: cartList
      })
    }
    console.log(this.data.localList, this.data.cartList)
  },
 
  /**
   * 生命周期函数--监听页面初次渲染完成
   */
  onReady: function () {
    
  },
 
  /**
   * 生命周期函数--监听页面显示
   */
  onShow: function () {
    
  },
 
  /**
   * 生命周期函数--监听页面隐藏
   */
  onHide: function () {
    
  },
 
  /**
   * 生命周期函数--监听页面卸载
   */
  onUnload: function () {
    
  },
 
  /**
   * 页面相关事件处理函数--监听用户下拉动作
   */
  onPullDownRefresh: function () {
    
  },
 
  /**
   * 页面上拉触底事件的处理函数
   */
  onReachBottom: function () {
    
  },
 
  /**
   * 用户点击右上角分享
   */
  onShareAppMessage: function () {
    
  },
  /**
   * 商品展示滚动
   */
  onGoodsScroll:function(e){
    var that = this;
    var scare = e.detail.scrollWidth / 250,
    scrollTop = e.detail.scrollTop,
    h = 0,
    selectOrder,
    len = this.data.shop.menu.length;
    this.data.shop.menu.forEach(function(classify,i){
        var _h = 37.5 + 94 * classify.menu.length;
        //console.log("srcollTop:" + scrollTop);
        //console.log(h - 100 / scare);
        if (scrollTop + 500 >= h ){
          selectOrder = classify.id;
         
        }
       
        h += _h;
    });
    this.setData({
      selectOrder: selectOrder
    });
  },
  /*
    增加商品
  */
  addGoods:function(e){
    var that = this;
    if (!this.data.isFreshing && that.data.count < that.data.sum){
      this.setData({
        loding: true,
        isFreshing:true
      });
      setTimeout(this.timeOut, 2000);
    }
  },
  //定时增加
  timeOut:function(){
    var that = this;
     {
      var menu = that.data.menu;
      menu.push(that.data.shop.menu[that.data.count]);
      //console.log(that.data.count);
      that.setData({
        menu: menu,
        count: that.data.count + 1,
        loding:false,
        isFreshing:false
      });
      //console.log("jinrulimiandeshuju");
    }
  },
  showCartDetailf:function(){
    this.setData({
      showCartDetail : !this.data.showCartDetail
    });
    console.log(this.data.showCartDetail);
  },
  hiddenCartDetailf:function(){
    this.setData({
      showCartDetail : false
    });
    console.log(this.data.showCartDetail);
  },
  //检查下标
  checkOrderSame: function (name) {
    var list = this.data.cartList[this.data.shopId];
    for (var index in list) {
      if (list[index].name === name) {
        return index;
      }
    }
    return false;
  },
  //将饭菜加入购物车
  tapAddCart:function(e){
    var price = parseFloat(e.target.dataset.price);
    var name = e.target.dataset.name;
    var img = e.target.dataset.pic;
    var list = this.data.cartList;
    var sortedList = [];
    var index;
    if (index = this.checkOrderSame(name)){
      sortedList = list[this.data.shopId][index];
      var num = list[this.data.shopId][index].num;
      list[this.data.shopId][index].num = num + 1;
      list[this.data.shopId][index].pay = (num+1)*sortedList.price;
    }else{
      //console.log(this.data.cartList);
      //console.log(list);
      //console.log(this.data.shopId);
      var order={
        'price' : price,
        'name' : name,
        "num": 1,
        'img' : img,
        'shopId': this.data.shopId,
        'shopName': this.data.shop.restaurant_name,
        'pay': price,
      };
      list[this.data.shopId].push(order);
      sortedList = order;
    }
    this.setData({
      cartList : list,
      localList :  server.filterEmptyObject(list)
    });
    this.addCount(sortedList);
    console.log(this.data.localList);
  },
  //删除购物车上的饭菜
  tapReduceCart:function(e){
    var name = e.target.dataset.name;
    var price = e.target.dataset.price;
    var list = this.data.cartList;
    var index,sortedList = [];
    if(index = this.checkOrderSame(name)){
      var num = list[this.data.shopId][index].num;
      if(num>1){
        sortedList = list[this.data.shopId][index];
        list[this.data.shopId][index].num = num - 1;
      }else{
        sortedList = list[this.data.shopId][index];
        list[this.data.shopId].splice(index,1);
      }
    }
    this.setData({
      cartList : list,
      localList : server.filterEmptyObject(list)
    });
    this.deduceCount(list);
  },
  //增加数量
  addCount: function (list) {
    var count = this.data.cart.count + 1,
      total = this.data.cart.total + list.price;
    total = Math.round(parseFloat(total));
    this.saveCart(count, total);
  },
  //减少数量
  deduceCount: function (list) {
    var count = this.data.cart.count - 1,
      total = this.data.cart.total - list.price;
    total = Math.round(parseFloat(total));
    this.saveCart(count, total);
  },
  //保存购物车的东西
  saveCart: function (count, total) {
    console.log(typeof total, total);
    if (isNaN(total))
      total = 0;
      console.log(typeof total,total);
    total = Math.round(parseFloat(total));
    this.setData({
      cart: {
        count: count,
        total: total
      }
    });
    wx.setStorage({
      key: 'orderList',
      data: {
        cartList: this.data.cartList,
        count: this.data.cart.count,
        total: this.data.cart.total
      }
    });
  },
  submit: function (e) {
    var total = this.data.cart.total
    wx.navigateTo({
      url: '/pages/order/order?pay=1&total=' + total
    })
  }
})