<template>
  <Dialog v-model="dialogVisible" :appendToBody="true" title="选择商品" width="70%">
    <ContentWrap>
      <el-row :gutter="20" class="mb-10px">
        <el-col :span="6">
          <el-input
            v-model="queryParams.name"
            class="!w-240px"
            clearable
            placeholder="请输入商品名称"
            @keyup.enter="handleQuery"
          />
        </el-col>
        <el-col :span="6">
          <el-tree-select
            v-model="queryParams.categoryId"
            :data="categoryTreeList"
            :props="defaultProps"
            check-strictly
            class="w-1/1"
            node-key="id"
            placeholder="请选择商品分类"
          />
        </el-col>
        <el-col :span="6">
          <el-date-picker
            v-model="queryParams.createTime"
            :default-time="[new Date('1 00:00:00'), new Date('1 23:59:59')]"
            class="!w-240px"
            end-placeholder="结束日期"
            start-placeholder="开始日期"
            type="daterange"
            value-format="YYYY-MM-DD HH:mm:ss"
          />
        </el-col>
        <el-col :span="6">
          <el-button @click="handleQuery">
            <Icon class="mr-5px" icon="ep:search" />
            搜索
          </el-button>
          <el-button @click="resetQuery">
            <Icon class="mr-5px" icon="ep:refresh" />
            重置
          </el-button>
        </el-col>
      </el-row>
      <el-table v-loading="loading" :data="list" show-overflow-tooltip>
        <!-- 多选模式 -->
        <el-table-column key="2" type="selection" width="55" v-if="multiple">
          <template #header>
            <el-checkbox
              :value="allChecked && checkedPageNos.indexOf(queryParams.pageNo) > -1"
              @change="handleCheckAll"
            />
          </template>
          <template #default="{ row }">
            <el-checkbox
              :value="checkedSpuIds.indexOf(row.id) > -1"
              @change="(checked: boolean) => handleCheckOne(checked, row)"
            />
          </template>
        </el-table-column>
        <!-- 单选模式 -->
        <el-table-column label="#" width="55" v-else>
          <template #default="{ row }">
            <el-radio :label="row.id" v-model="selectedSpuId" @change="handleSingleSelected(row)"
              >&nbsp;</el-radio
            >
          </template>
        </el-table-column>
        <el-table-column key="id" align="center" label="商品编号" prop="id" min-width="60" />
        <el-table-column label="商品图" min-width="80">
          <template #default="{ row }">
            <el-image
              :src="row.picUrl"
              class="w-30px h-30px"
              :preview-src-list="[row.picUrl]"
              preview-teleported
            />
          </template>
        </el-table-column>
        <el-table-column label="商品名称" min-width="200" prop="name" />
        <el-table-column label="商品分类" min-width="100" prop="categoryId">
          <template #default="{ row }">
            <span>{{ categoryList?.find((c) => c.id === row.categoryId)?.name }}</span>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页 -->
      <Pagination
        v-model:limit="queryParams.pageSize"
        v-model:page="queryParams.pageNo"
        :total="total"
        @pagination="getList"
      />
    </ContentWrap>
    <template #footer v-if="multiple">
      <el-button type="primary" @click="handleEmitChange">确 定</el-button>
      <el-button @click="dialogVisible = false">取 消</el-button>
    </template>
  </Dialog>
</template>

<script lang="ts" setup>
import { ElTable } from 'element-plus'
import { defaultProps, handleTree } from '@/utils/tree'

import * as ProductCategoryApi from '@/api/mall/product/category'
import * as ProductSpuApi from '@/api/mall/product/spu'
import { propTypes } from '@/utils/propTypes'

type Spu = Required<ProductSpuApi.Spu>

defineOptions({ name: 'SpuTableSelect' })

const props = defineProps({
  // 多选
  multiple: propTypes.bool.def(false)
})

const total = ref(0) // 列表的总页数
const list = ref<Spu[]>([]) // 列表的数据
const loading = ref(false) // 列表的加载中
const dialogVisible = ref(false) // 弹窗的是否展示
const queryParams = ref({
  pageNo: 1,
  pageSize: 10,
  tabType: 0, // 默认获取上架的商品
  name: '',
  categoryId: null,
  createTime: []
}) // 查询参数

const selectedSpuId = ref() // 选中的商品 spuId

/** 打开弹窗 */
const open = (spus?: Spu[]) => {
  if (spus && spus.length > 0) {
    // todo check-box不显示选中？
    checkedSpus.value = [...spus]
    checkedSpuIds.value = spus.map((spu) => spu.id)
  } else {
    checkedSpus.value = []
    checkedSpuIds.value = []
  }
  allChecked.value = false
  checkedPageNos.value = []

  dialogVisible.value = true
  resetQuery()
}
defineExpose({ open }) // 提供 open 方法，用于打开弹窗

/** 查询列表 */
const getList = async () => {
  loading.value = true
  try {
    const data = await ProductSpuApi.getSpuPage(queryParams.value)
    list.value = data.list
    total.value = data.total
  } finally {
    loading.value = false
  }
}

/** 搜索按钮操作 */
const handleQuery = () => {
  queryParams.value.pageNo = 1
  getList()
}

/** 重置按钮操作 */
const resetQuery = () => {
  queryParams.value = {
    pageNo: 1,
    pageSize: 10,
    tabType: 0, // 默认获取上架的商品
    name: '',
    categoryId: null,
    createTime: []
  }
  getList()
}

const allChecked = ref(false) //是否全选
const checkedPageNos = ref<number[]>([]) //选中的页码
const checkedSpuIds = ref<number[]>([]) //选中的商品ID
const checkedSpus = ref<Spu[]>([]) //选中的商品

/** 单选中时触发 */
const handleSingleSelected = (row: Spu) => {
  emits('change', row)
  // 关闭弹窗
  dialogVisible.value = false
  // 记住上次选择的ID
  selectedSpuId.value = row.id
}

/** 多选完成 */
const handleEmitChange = () => {
  // 关闭弹窗
  dialogVisible.value = false
  emits('change', [...checkedSpus.value])
}

/** 确认选择时的触发事件 */
const emits = defineEmits<{
  (e: 'change', spu: Spu | Spu[] | any): void
}>()

/** 全选 */
const handleCheckAll = (checked: boolean) => {
  //todo 不触发？
  console.log('checkAll', checked)
  allChecked.value = checked
  const index = checkedPageNos.value.indexOf(queryParams.value.pageNo)
  checkedPageNos.value.push(queryParams.value.pageNo)
  if (index > -1) {
    checkedPageNos.value.splice(index, 1)
  }

  list.value.forEach((item) => handleCheckOne(checked, item))
}

/** 选中一行 */
const handleCheckOne = (checked: boolean, spu: Spu) => {
  if (checked) {
    const index = checkedSpuIds.value.indexOf(spu.id)
    if (index === -1) {
      checkedSpuIds.value.push(spu.id)
      checkedSpus.value.push(spu)
    }
  } else {
    const index = checkedSpuIds.value.indexOf(spu.id)
    if (index > -1) {
      checkedSpuIds.value.splice(index, 1)
      checkedSpus.value.splice(index, 1)
    }
  }
}

const categoryList = ref() // 分类列表
const categoryTreeList = ref() // 分类树
/** 初始化 **/
onMounted(async () => {
  await getList()
  // 获得分类树
  categoryList.value = await ProductCategoryApi.getCategoryList({})
  categoryTreeList.value = handleTree(categoryList.value, 'id', 'parentId')
})
</script>
