// pages/order/road/index.js
import commonApi from "../../../utils/https/common"
import util from "../../../utils/util"
let app = getApp()
Page({

  /**
   * 页面的初始数据
   */
  data: {
    monthDays1:[0,0],
    monthDays2:[0,0],
    month:[],
    monthIndex:0,
    prices:{},
    selectDate:null,
    id:21,
    sku:[],
    nums:[],
    price:0,
    infoFlag:false,
    productInfo:null
  },

  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
    this.setData({
      id:options.id
    })
    // 获取产品下的规格
    commonApi._post("product/get_product_detail",{
      id:this.data.id
    }).then(res=>{
      let nums = [];
      if(options.skuid){
        let sku = res.data.sku.find(item=>item.id==options.skuid);
        res.data.sku = [sku];
      }
      res.data.sku.map(item=>{
        nums.push(0)
      })
      for(let i=0;i<res.data.sku.length;i++){
        for(let j=i+1;j<res.data.sku.length;j++){
          if(res.data.sku[i].id>res.data.sku[j].id){
            [res.data.sku[i],res.data.sku[j]] = [res.data.sku[j],res.data.sku[i]]
          }
        }
      }
      this.setData({
        productInfo:res.data,
        sku:res.data.sku,
        nums:nums
      })
    })
    this.initDate()
  },
  changeMonth:function(e){
    this.setData({
      monthIndex:e.currentTarget.dataset.index
    })
  },
  initDate(){
    let today = new Date(),month1 = today.getMonth()+1,month2 = (month1 + 1) % 12,year = today.getFullYear(),year2 = month1<month2?year:(year+1);
    let monthDays1 = this.getMonthDays(month1,year);
    let monthDays2 = this.getMonthDays(month2,year2);
    this.setData({
      month:[month1,month2],
      monthDays1:monthDays1,
      monthDays2:monthDays2
    })
    let selectDate,selectMonth;
    commonApi.user_post("product/get_product_sku_price_by_date",{
      product_id:this.data.id,
      start_date:util.formatDate(today),
      end_date:year2+"/"+month2+"/"+monthDays2[0]
    }).then(res=>{
      let prices={};
      res.data.map(item=>{
        // 给规格排序
        for(let i=0;i<item.info.length;i++){
          for(let j=i+1;j<item.info.length;j++){
            if(item.info[i].sku_info.id>item.info[j].sku_info.id){
              [item.info[i],item.info[j]] = [item.info[j],item.info[i]]
            }
          }
        }
        let stock = 0;
        item.info.map(i=>{
          stock = stock+i.stock;
        })
        item.stock = stock;
        if(item.stock>0){
          let date = item.date.split("-").splice(1,2),newDate=[];
          console.log(date)
          date.map(d=>{
            d = parseInt(d);
            newDate.push(d)
          })
          if(!selectDate){
            selectDate = newDate[1];
            selectMonth = newDate[0];
          }
          prices[newDate.join("-")] = item;
        }
      })
      this.setData({
        prices:prices
      })
      if(!selectDate) return;
      let info = prices[selectMonth+'-'+selectDate];
      info.selectMonth = selectMonth;
      info.selectDate = selectDate;
      this.setData({
        selectDate:info,
        monthIndex:selectMonth==month1?0:1
      })
      this.changePrice()
    })
  },
  // 获取这个月有几天
  getMonthDays:function(month,year){
    let date = new Date(year+"/"+month+"/01").getDay();
    if(month==2){
      if(year % 100 !==0 && year % 4==0 || year % 400 ==0){
        return [29,date];
      }
      else {
        return [28,date];
      }
    }
    else if(month<8 && month % 2 ==1 || month>=8 && month % 2==0){
      return [31,date];
    }
    else {
      return [30,date];
    }
  },
  selectDate:function(e){
    // 选择日期
    let item = e.currentTarget.dataset.item,selectMonth = this.data.month[this.data.monthIndex];
    if(!selectMonth) return
    let info = this.data.prices[selectMonth+'-'+(item+1)];
    console.log(info)
    if(info && info.product_price && info.product_price!==null && info.stock!=0){
      info.selectMonth = selectMonth;
      info.selectDate = item+1;
      this.setData({
        selectDate:info
      })
      this.changePrice()
    }
  },
  minus:function(e){
    if(!this.data.selectDate){
      wx.showToast({
        title: '请先选择出行日期',
        icon:'none'
      })
      return;
    }
    let index = e.currentTarget.dataset.index,nums = this.data.nums;
    if(nums[index]==0) return;
    nums[index] = nums[index] - 1;
    this.setData({
      nums:nums
    })
    this.changePrice()
  },
  add:function(e){
    let index = e.currentTarget.dataset.index,nums = this.data.nums,selectDate = this.data.selectDate,sku = this.data.sku;
    if(!selectDate){
      wx.showToast({
        title: '请先选择出行日期',
        icon:'none'
      })
      return;
    }
    if(selectDate.info[index].stock==nums[index]) return;
    nums[index] = nums[index] + 1;
    this.setData({
      nums:nums
    })
    this.changePrice()
  },
  showInfo:function(){
    this.setData({
      infoFlag:!this.data.infoFlag
    })
  },
  changePrice:function(){
    let selectDate = this.data.selectDate,nums = this.data.nums,price=0;
    nums.map((num,index)=>{
      price = price + num * selectDate.info[index].price;
    })
    this.setData({
      price:price
    })
  },
  order:function(){
    let selectDate = this.data.selectDate,sku = this.data.sku,nums = this.data.nums,allNum = 0;
    if(!selectDate){
      wx.showToast({
        title: '请先选择日期',
        icon:'none'
      })
      return;
    }
    sku.map((item,index)=>{
      item.num = nums[index];
      allNum = allNum + nums[index];
      item.price = selectDate.info[index].price;
    })
    if(allNum==0){
      wx.showToast({
        title: '至少选择一个规格',
        icon:'none'
      })
      return;
    };
    app.globalData.product = {
      product:this.data.productInfo,
      sku:sku,
      selectDate:selectDate,
      price:this.data.price
    }
    wx.navigateTo({
      url: '/pages/order/roadOrder/index',
    })
  },
  /**
   * 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 () {

  }
})