<template>
  <div>
    <div class="area-code">{{ selected.join(', ') }}</div>
    <el-button v-show="!readonly" type="primary" size="mini" @click="handleOpen">选择</el-button>

    <el-dialog
      title="储位"
      :visible.sync="dialogVisible"
      width="30%"
      append-to-body
      :before-close="handleClose">
      <el-tabs v-model="activeName" type="card" @tab-click="activeWarehouse = {}">
        <el-tab-pane :label="item.name" :name="'' + index" v-for="(item, index) in area" :key="index">
          <div>
            <div style="text-align: center">{{$t('区域')}}</div>
            <div style="background-color: #efefef;padding: 10px 10px 0;border: #dcdcdc solid 1px;border-radius: 2px">
              <el-row :gutter="20">
                <el-col :span="12" v-for="warehouse in item.children" :key="warehouse.id">
                  <div
                    class="warehouse-block"
                    :class="{'warehouse-block-selected': warehouse.selected, 'warehouse-block-active': warehouse.id === activeWarehouse.id}"
                    @click="handleSelectWarehouse(warehouse)"
                  >
                    {{ warehouse.name }}
                  </div>
                </el-col>
              </el-row>
            </div>
          </div>
          <div>
            <div style="text-align: center">{{$t('仓位')}}</div>
            <div class="position-group">
              <div class="position" v-for="position in activeWarehouse.positionList" :key="position.id" @click="handleSelectPosition(position)">
                <template v-if="position.children">
                  <div
                    class="position-item"
                    v-for="item in position.children"
                    :key="item.id"
                    @click.stop="handleSelectPositionChild(item)"
                    :class="{'position-item-active': item.selected}">
                    {{ item.code }}
                  </div>
                </template>
                <template v-else>
                  <div
                    class="position-item"

                    :class="{'position-item-active': position.selected}">
                    {{ position.code }}
                  </div>
                </template>
              </div>
            </div>
          </div>
          <el-divider></el-divider>
          {{$t('已选择')}}：{{ selected.join(', ') }}
          <el-divider></el-divider>
        </el-tab-pane>
      </el-tabs>
      <span slot="footer" class="dialog-footer">
    <el-button @click="dialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="handleSave">确 定</el-button>
  </span>
    </el-dialog>
  </div>
</template>

<script>
import {getByWarehouseId} from "@/api/ecw/warehouseArea"
import { updateWarehouseInLocation } from "@/api/ecw/order"

export default {
  name: "WarehouseAreaSelect",

  props: {
    value: {
      type: Array,
      default: () => []
    },
    orderId: Number,
    orderItemId: Number,
    // 入仓记录id
    warehouseInId: Number,
    warehouseId: {
      type: Number,
      default: undefined
    },
    // 是否入仓修改
    isEditing: {
      type: Boolean,
      default: false
    },
    readonly: {
      type: Boolean,
      default: false
    }
  },

  data() {
    return {
      dialogVisible: false,
      activeName: '0',
      activeWarehouse: {},
      area: [],
    }
  },

  mounted() {
    this.initArea()
  },

  computed: {
    // code array
    selected() {
      const result = []

      this.area?.forEach(e => {
        // 仓库
        e.children?.forEach(f => {
          // 区域
          if (f.selected) result.push(f.code)
          else f.positionList?.forEach(g => {
            // 位置
            if (g.selected) result.push(f.code + g.code)
            else if(g.children) g.children?.forEach(k => {
              // 子位置
              if (k.selected) result.push(f.code + k.code)
            })
          })
        })
      })

      return result
    },
    inputValue(){
      const result = []

      this.area?.forEach(e => {
        // 仓库
        e.children?.forEach(f => {
          // 区域
          if (f.selected) result.push({
            orderId: this.orderId,
            wareId: f.pid,
            areaId: f.id
          })
          else {
            f.positionList?.forEach(g => {
              // 位置
              if (g.selected) result.push({
                orderId: this.orderId,
                wareId: g.domainId,
                areaId: g.areaId,
                locationId: g.id
              })
              else g.children?.forEach(k => {
                // 子位置
                if (k.selected) result.push({
                  orderId: this.orderId,
                  wareId: k.domainId,
                  areaId: k.areaId,
                  locationId: k.id
                })
              })
            })
          }
        })
      })

      return result
    }
  },

  methods: {
    handleOpen(){
      this.dialogVisible = true
      // this.initArea()
    },
    handleSave(){
      this.$nextTick(() => {
        const data = this.inputValue.map(e => {
          return {
            ...e,
            orderItemId: this.orderItemId,
            warehouseInId: this.warehouseInId
          }
        })
        this.$emit('input', data)
        this.dialogVisible = false

        if (this.isEditing || this.warehouseInId) {
            updateWarehouseInLocation(data).then(() => {
              this.$message.success('储位修改成功')
            })
        }
      })
    },
    handleClose() {
      this.dialogVisible = false
    },
    handleSelectWarehouse(warehouse) {
      this.activeWarehouse = warehouse
      if (!!warehouse.selected) {
        warehouse.selected = false
        return
      } else if(this.activeWarehouseId !== warehouse.id) {
        this.activeWarehouseId = warehouse.id
        if (this.inputValue.find(e => e.areaId === warehouse.id)){
          return
        }
      }
      warehouse.selected = true

      // 区域被选，清空该区域下的位置
      if(warehouse.positionList) warehouse.positionList?.forEach(g => {
        g.selected = false
        g.children?.forEach(k => {
          k.selected = false
        })
      })
    },
    handleSelectPositionChild(position) {
      if (!!position.selected) {
        position.selected = false

        // 反选位置时，检查父区域下是否所有位置被反选，若是，选父区域
        const parentAre = this.area.find(e => e.id === position.domainId).children.find(f => f.id === position.areaId)
        if (!parentAre.selected) {
          // 检查父区域下是否所有位置被反选
          let hasSelected = false
          parentAre.positionList?.forEach(g => {
            // 位置
            g.children?.forEach(k => {
              // 子位置
              if (k.selected) hasSelected = true
            })
          })
          // 所有子位置被反选，选父区域
          if (!hasSelected) parentAre.selected = true
        }
      } else {
        position.selected = true

        // 选位置时，父区域反选
        this.area.find(e => e.id === position.domainId).children.find(f => f.id === position.areaId).selected = false

      }
    },
    handleSelectPosition(position) {
      if (!!position.selected) {
        position.selected = false
      } else {
        position.selected = true

        // 选位置时，父区域反选
        this.area.find(e => e.id === position.domainId).children.find(f => f.id === position.areaId).selected = false

      }
    },

    resetAreaTreeSelected(area) {
      area.forEach(e => {
        // 仓库
        e.children?.forEach(f => {
          // 区域
          f.selected = this.isSelected(e.id, f.id)
          if(f.positionList) f.positionList.forEach(g => {
            // 位置
            g.selected = this.isSelected(e.id, f.id, g.id)
            g.children?.forEach(k => {
              // 子位置
              k.selected = this.isSelected(e.id, f.id, k.id)
            })
          })
        })
      })
      return area
    },

    initArea(){
      return getByWarehouseId({ warehouseId: this.warehouseId }).then(r => {
        this.area = this.resetAreaTreeSelected(r.data)

      })
    },
    // 用于储位回显选中
    isSelected(warehouse, area, position = 0){
      return !!this.value.find(e => warehouse === e.wareId && area === e.areaId && (position === e.locationId || undefined === e.locationId))
    },
  }
}
</script>

<style scoped>
.area-code{
  display: inline-block;
  margin-right: 15px;
}

.warehouse-block{
  background-color: white;
  border-radius: 5px;
  height: 42px;
  line-height: 42px;
  text-align: center;
  margin-bottom: 15px;
  cursor: pointer;
  transition: 0.5s;
  box-shadow: #bfbfbf 3px 3px 14px 0;
  user-select: none;
}
.warehouse-block:hover{
  opacity: 0.9;
  transition: 0.5s;
  transform: scale(1.02);
  box-shadow: #8f8f8f 7px 5px 14px 0;
}
.warehouse-block-active{
  box-shadow: #b1a4cb 7px 5px 14px 0;
  transform: scale(1.04);
  background-color: #9ab7e1;
  color: #ffffff;
}
.warehouse-block-selected{
  color: #ffffff;
  background-color: #4085e3;
}
.position-group{
  display: flex;
  background-color: #EFEFEF;
  border: 1px #EFEFEF solid;
  gap: 1px;
  min-height: 64px;
  flex-flow: wrap;
}
.position{
  width: calc(20% - 1px);
  height: 64px;
  display: flex;
  flex-direction: column;
  gap: 1px;
  user-select: none;
}
.position-item{
  width: 100%;
  background-color: #FFFFFF;
  flex: 1;
  cursor: pointer;
  text-align: center;
  display: flex;
  justify-content: center;
  align-items: center;
}
.position-item:hover{
  background-color: #d7dbe3;
}
.position-item-active{
  background-color: #4085e3;
  color: white;
}
.position-item-active:hover{
  background-color: #4085e3;
  opacity: 0.8;
}
</style>