const app = getApp()
Page({

  /**
   * 页面的初始数据
   */
  data: {
    check_num: 0, //选中数量
    checkAll: false, //全选状态
    check_str: ''
  },
  //改变商品状态
  check_type(e) {
    let index = Number(e.detail.index)
    this.setData({
      [`list[${index}].check_type`]: e.detail.check_type,
      check_num: e.detail.check_num
    })
    if (e.detail.check_num == this.data.list.length) {
      this.setData({
        checkAll: true
      })
    } else if (e.detail.check_num == 0) {
      this.setData({
        checkAll: false
      })
    }
    this.get_all()
  },
  //全选|全不选
  check_all() {
    let list = this.data.list
    for (let obj of list) {
      obj.check_type = !this.data.checkAll
    }
    this.setData({
      checkAll: !this.data.checkAll,
      list: list,
      check_num: !this.data.checkAll ? list.length : 0
    })
    this.get_all()
  },
  //获取选中商品
  get_all() {
    let that = this
    let list = that.data.list
    let check_str = ''
    for (let obj of list) {
      if (obj.check_type) {
        if (check_str == ""){
          check_str = obj.id
        } else {
          check_str = check_str + ',' + obj.id
        }
      }
    }
    that.setData({
      check_str: check_str
    })
  },
  delete_item(){
    if (this.data.check_str == ""){
      wx.showToast({
        title: '请先选中商品',
        icon: 'none',
        duration: 1000
      })
      return
    }
    let url = app.interface.collectdel
    let params = {
      ids: this.data.check_str
    }
    app.post(url,params).then((res)=>{
      wx.showToast({
        title: '删除成功',
        duration: 1000
      })
      this.get_info()
    })
  },
//获取页面信息
  get_info() {
    wx.showLoading({
      title: '加载中'
    })
    let that = this
    let url = app.interface.collectList
    app.post(url, {}).then((res) => {
      wx.hideLoading()
      that.setData({
        list: res.msg
      })
    })
  },


  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function(options) {
    this.get_info()
  },

  /**
   * 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() {

  }
})