// pages/message/index.js
const util = require('../../../utils/util')
const math = require('../../../utils/math')

Component({
  options: {
    addGlobalClass: true,
    multipleSlots: true
  },
  properties: {
    item: { 
      type: Object, 
      value: null, 
      observer(value) {
        this.setValues(value);
    }},
    index: { type: Number, value: 0 },
    status: { type: Number, value: 0 }
  },
  data: {
    valued: false,
    focus: 0,
    fileList: []
  },
  methods: {
    setValues: function(value){
      if(value && !this.data.valued){
        this.data.item.settleUnitPrice = value.unitPrice
        this.statAmount()
        wx.nextTick(() => {
          this.triggerEvent('change', {index: this.data.index, item: this.data.item});
        })
        if(value.weightNoteImages){
          this.data.fileList = []
          for (let index = 0; index < value.weightNoteImages.length; index++) {
            this.data.fileList.push({url: value.weightNoteImages[index]})
          }
          this.setData({fileList: this.data.fileList})
        }
        this.data.valued = true
      }
    },
    bindInput: function (e) {
      this.data.item[e.currentTarget.id] = e.detail
      if(e.currentTarget.id == 'grossWeight' || e.currentTarget.id == 'tareWeight'){
        if(Number(this.data.item.grossWeight) > 0){
          if(Number(this.data.item.tareWeight) > 0){
            if(Number(this.data.item.grossWeight) > Number(this.data.item.tareWeight)){
              var netWeight = math.minus(this.data.item.grossWeight, this.data.item.tareWeight)
              var estimatedAmount = math.times(netWeight, this.data.item.unitPrice).toFixed(2)
              this.setData({['item.netWeight']: netWeight, ['item.estimatedAmount']: estimatedAmount})
            } else {
              this.setData({['item.netWeight']: null, ['item.estimatedAmount']: null})
            }
          } else {
            this.setData({['item.netWeight']: Number(this.data.item.grossWeight), ['item.estimatedAmount']: null})
          }
        } else {
          this.setData({['item.netWeight']: null, ['item.estimatedAmount']: null})
        }
      } else if(e.currentTarget.id == 'deductPercent'){
        if(util.isEmpty(e.detail) || Number(e.detail) <= 0){
          this.data.item.deductWeight = null
          this.data.item.deductPercent = null
        } else {
          this.data.item.deductWeight = math.divide(math.times(this.data.item.netWeight, Number(e.detail)), 100).toFixed(2)
        }
        this.statAmount()
      } else if(e.currentTarget.id == 'deductWeight'){
        if(util.isEmpty(e.detail) || Number(e.detail) <= 0){
          this.data.item.deductWeight = null
          this.data.item.deductPercent = null
        } else {
          this.data.item.deductPercent = math.times(math.divide(Number(e.detail), this.data.item.netWeight), 100).toFixed(2)
        }
        this.statAmount()
      } else if(e.currentTarget.id == 'settleUnitPrice'){
        this.statAmount()
      } else if(e.currentTarget.id == 'netWeight'){
        var estimatedAmount = math.times(this.data.item.netWeight, this.data.item.unitPrice).toFixed(2)
        this.setData({['item.estimatedAmount']: estimatedAmount})
      } 
      wx.nextTick(() => {
        this.triggerEvent('change', {index: this.data.index, item: this.data.item});
      })
    },
    statAmount: function(){
      this.data.item.settleWeight = this.data.item.netWeight
      if(util.isEmpty(this.data.item.settleWeight) || Number(this.data.item.settleWeight) <= 0){
        return
      }
      if(!util.isEmpty(this.data.item.deductWeight)){
        this.data.item.settleWeight = math.minus(this.data.item.netWeight, this.data.item.deductWeight)
      }
      if(!util.isEmpty(this.data.item.settleUnitPrice) && Number(this.data.item.settleUnitPrice) > 0){
        this.data.item.settlePrice = math.times(this.data.item.settleWeight, this.data.item.settleUnitPrice)
      } else {
        this.data.item.settlePrice = null
      }
      this.setData({ item: this.data.item })
    },
    changeDeductType: function(e){
      var type = Number(e.currentTarget.dataset.type)
      this.setData({ ['item.sign']: type, focus: type })
      console.log(this.data.item)
    },
    fileChange: function({detail}){
      this.data.fileList = detail.fileList
      var imageUrls = []
      for (let index = 0; index < this.data.fileList.length; index++) {
        imageUrls.push(this.data.fileList[index].url)
      }
      this.data.item.weightNoteImages = imageUrls
      wx.nextTick(() => {
        this.triggerEvent('change', {index: this.data.index, item: this.data.item});
      })
    }
  }

})