import { getProductInfo } from "../../../../api/ztb"
const util = require('../../../../utils/util')
const math = require('../../../../utils/math')
const event = require('../../../../utils/event')
const app = getApp()

Page({
  /**
   * 页面的初始数据
   */
  data: {
    backStr: '返回',
    orderInfo: null,
    matchTag: null,
    sukList: [],
    imgList: [],
    form: {
      productId: null,
      skuId: null,
      number: 1,
      unitPrice: 0
    },
    amount: null,
    safeBottom: false,
    imageHeight: 0,
    visible: false,
    videoUrl: null
  },
  /**
   * 生命周期函数--监听页面加载
   */
  onLoad: function (options) {
    if (getCurrentPages().length == 1) {
      this.setData({
        backStr: '首页'
      })
    }
    this.setData({
      imageHeight: math.divide(math.times(750, 9), 16),
      safeBottom: app.globalData.safeBottom
    })
    event.on('EventMessage', this, this.onEvent)
    if (options.id) {
      wx.showLoading({
        title: '加载中',
        mask: true
      })
      getProductInfo(options.id).then(result => {
        wx.hideLoading()
        var vurl = null
        var imgList = []
        if (result.data.videoUrl) {
          vurl = result.data.videoUrl
          imgList = result.data.imgList
          imgList.unshift(vurl)
          this.videoContext = wx.createVideoContext('video')
        } else {
          imgList = result.data.imgList
        }
        this.setData({
          ['form.productId']: options.id,
          orderInfo: result.data,
          videoUrl: vurl,
          imgList: imgList
        })
      }).catch(err => {
        //异常回调
        wx.hideLoading()
        util.showToast(err)
      })
    }
  },
  isVideoUrl: function (url) {
    if (url && url.indexOf('.mp4') >= 0) {
      return true
    }
    return false
  },
  // 事件处理
  onEvent: function (message) {
    console.log('mall>>order>>onEvent', message)
    if (message.what == 1) {

    } else if (message.what == 10) {
      wx.navigateBack()
    }
  },
  videoTap: function () {
    this.setData({
      visible: true,
    })
    if (this.videoContext) {
      this.videoContext.play()
    }
  },
  onClose: function () {
    this.setData({
      visible: false,
    })
    if (this.videoContext) {
      this.videoContext.pause()
    }
  },
  bindended: function () {
    this.videoContext.exitFullScreen()
    this.setData({
      visible: false
    })
  },
  // 图片查看 
  viewImage: function (e) {
    if (e.currentTarget.dataset.url.indexOf('.mp4') >= 0) {
      return
    }
    var imgList = []
    for (let index = 0; index < this.data.imgList.length; index++) {
      if (this.data.imgList[index].indexOf('.mp4') >= 0) {
        continue
      }
      imgList.push(this.data.imgList[index])
    }
    wx.previewImage({
      urls: imgList,
      current: e.currentTarget.dataset.url
    });
  },
  // 根据
  checkDisableTag: function (sukId, match, element) {
    match[sukId] = element.id
    for (let index = 0; index < this.data.orderInfo.skuList.length; index++) {
      const item = this.data.orderInfo.skuList[index];
      if (this.checkSkuPrice(match, item)) {
        delete match[sukId]
        return false
      }
    }
    delete match[sukId]
    return true
  },
  // tag 点击事件
  tagClick: function (e) {
    this.data.matchTag = null
    var sukId = e.currentTarget.dataset.suk // 对应的是一级列表的Id
    var id = e.currentTarget.dataset.index // 对应的是二级列表的Id，相应是有价格计算的
    //------------------------------sukList-------------------------------------------
    // 检查是否需要跟新，或者修改，跟新sukList；
    var push_flag = true
    for (let index = 0; index < this.data.sukList.length; index++) {
      const element = this.data.sukList[index];
      if (element.skuId == sukId) {
        this.data.sukList[index].id = id
        push_flag = false
        break
      }
    }
    if (push_flag) {
      this.data.sukList.push({
        skuId: sukId,
        id: id
      })
    }
    //------------------------------attributeList-------------------------------------------
    var match = {}
    for (let index = 0; index < this.data.sukList.length; index++) {
      const element = this.data.sukList[index];
      match[element.skuId] = element.id
    }
    var attributeList = this.data.orderInfo.attributeList
    for (let i = 0; i < attributeList.length; i++) {
      for (let k = 0; k < attributeList[i].values.length; k++) {
        const element = attributeList[i].values[k];
        // 点击的列判断 对应的是一级列表，肯定是可以点击的
        if (attributeList[i].id == sukId) {
          element.select = false
          if (element.id == id) {
            element.select = true
          }
        } else {
          // 如果其余的规格没有价格的，进行处理；无法点击
          element.disabled = this.checkDisableTag(attributeList[i].id, match, element)
        }
      }
    }
    this.setData({
      ['orderInfo.attributeList']: attributeList,
      amount: null
    })
    //------------------------------matchTag-------------------------------------------
    if (this.data.sukList.length == this.data.orderInfo.attributeList.length) {
      this.data.matchTag = {}
      for (let index = 0; index < this.data.sukList.length; index++) {
        const element = this.data.sukList[index];
        this.data.matchTag[element.skuId] = element.id
      }
      this.onNumChange(null)
    }
  },
  // 根据所有选择的规格校验获取价格
  checkSkuPrice: function (tag, element) {
    if (!tag) {
      return false
    }
    for (var key in tag) {
      if (element.price <= 0 || tag[key] != element[key]) {
        return false
      }
    }
    return true
  },
  // 数量变化的函数监听
  onNumChange: function (e) {
    if (e) {
      this.setData({
        ['form.number']: e.detail.value
      })
      // 如果查询到了价格，进行价格计算
      if (this.data.form.unitPrice) {
        this.setData({
          amount: float.accMul(this.data.form.unitPrice, this.data.form.number)
        })
      }
    } else if (this.data.sukList.length == this.data.orderInfo.attributeList.length) {
      // 根据规格，克重，以及其他筛选价格
      for (let index = 0; index < this.data.orderInfo.skuList.length; index++) {
        const element = this.data.orderInfo.skuList[index];
        if (this.checkSkuPrice(this.data.matchTag, element)) {
          this.data.form.unitPrice = Number(element.price)
          this.data.form.monthPrice = Number(element.groupMonthPrice)
          this.data.form.stockNumber = Number(element.stockNumber)
          // 如果当前的数量大于所选规格的库存数量，那么就设置成库存数量；
          if (this.data.form.number > this.data.form.stockNumber) {
            this.data.form.number = Number(element.stockNumber)
          }
          this.data.form.dividePrice = Number(element.dividePrice)
          this.data.form.skuId = element.id
          // console.log(element)
          break
        }
      }
      // 如果查询到了价格，进行价格计算
      if (this.data.form.unitPrice) {
        this.setData({
          ['form.number']: this.data.form.number,
          ['form.unitPrice']: this.data.form.unitPrice,
          ['form.stockNumber']: this.data.form.stockNumber,
          amount: float.accMul(this.data.form.unitPrice, this.data.form.number)
        })
      }
    }
  },
  // 进入支付流程
  offerProject: function (e) {
    var attributeList = this.data.orderInfo.attributeList
    for (let i = 0; i < attributeList.length; i++) {
      var toast = '请选择' + attributeList[i].name
      for (let k = 0; k < attributeList[i].values.length; k++) {
        const element = attributeList[i].values[k];
        if (element.select) {
          toast = ''
          break
        }
      }
      if (!util.isEmpty(toast)) {
        util.showToast(toast)
        return
      }
    }
    if (this.data.form.number <= 0) {
      util.showToast('请输入购买数量，必选大于0')
      return
    }
    if (this.data.form.stockNumber <= 0) {
      util.showToast('暂无库存，请选择其他规格类型')
      return
    }
    this.data.form.summary = this.data.orderInfo.summary
    this.data.form.sellMode = this.data.orderInfo.sellMode
    this.data.form.name = this.data.orderInfo.name
    this.data.form.outline = this.data.orderInfo.outline
    this.data.form.litimgUrl = this.data.orderInfo.litimgUrl
    this.data.form.unit = this.data.orderInfo.unit
    wx.navigateTo({
      url: '/pages/mall/order-offer/index?json=' + JSON.stringify(this.data.form)
    })
  },
  onShareAppMessage: function () {
    return {
      title: this.data.orderInfo.name,
      path: '/pages/mall/order-info/index?id=' + this.data.orderInfo.id,
      imageUrl: this.data.orderInfo.litimgUrl,
      success: function (res) {}
    }
  },
  // 分享至朋友圈
  onShareTimeline(res) {
    return {
      title: this.data.orderInfo.name,
      path: '/pages/mall/order-info/index?id=' + this.data.orderInfo.id,
      imageUrl: this.data.orderInfo.litimgUrl,
      success: function (res) {}
    }
  },
  // event的unregister
  onUnload: function () {
    event.remove('EventMessage', this)
    if (getCurrentPages().length == 1) {
      this.toHome()
    }
  },
  // 返回到主页
  toHome() {
    wx.reLaunch({
      url: '/pages/mall/shops/index',
    })
  }
})