<template>
  <div>
    <div class="gva-search-box">
      <el-form ref="elSearchFormRef" :inline="true" :model="searchInfo" class="demo-form-inline" :rules="searchRule" @keyup.enter="onSubmit">
        <el-form-item label="创建日期" prop="createdAt">
          <template #label>
            <span>
              创建日期
              <el-tooltip content="搜索范围是开始日期（包含）至结束日期（不包含）">
                <el-icon><QuestionFilled /></el-icon>
              </el-tooltip>
            </span>
          </template>
          <el-date-picker v-model="searchInfo.startCreatedAt" type="datetime" placeholder="开始日期" :disabled-date="time=> searchInfo.endCreatedAt ? time.getTime() > searchInfo.endCreatedAt.getTime() : false"></el-date-picker>
          —
          <el-date-picker v-model="searchInfo.endCreatedAt" type="datetime" placeholder="结束日期" :disabled-date="time=> searchInfo.startCreatedAt ? time.getTime() < searchInfo.startCreatedAt.getTime() : false"></el-date-picker>
        </el-form-item>

        <template v-if="showAllQuery">
          <el-form-item label="名称">
            <el-input v-model="searchInfo.name" placeholder="按名称搜索" clearable />
          </el-form-item>
          <el-form-item label="等级">
            <el-select v-model="searchInfo.level" placeholder="按等级搜索" clearable style="width: 180px">
              <el-option :value="1" label="Vip" />
              <el-option :value="2" label="Svip" />
            </el-select>
          </el-form-item>
        </template>

        <el-form-item>
          <el-button type="primary" icon="search" @click="onSubmit">查询</el-button>
          <el-button icon="refresh" @click="onReset">重置</el-button>
          <el-button link type="primary" icon="arrow-down" @click="showAllQuery=true" v-if="!showAllQuery">展开</el-button>
          <el-button link type="primary" icon="arrow-up" @click="showAllQuery=false" v-else>收起</el-button>
        </el-form-item>
      </el-form>
    </div>

    <div class="gva-table-box">
      <div class="gva-btn-list">
        <el-button type="primary" icon="plus" @click="openDialog()">新增</el-button>
        <el-button icon="delete" style="margin-left: 10px;" :disabled="!multipleSelection.length" @click="onDelete">删除</el-button>
      </div>
      <el-table
        ref="multipleTable"
        style="width: 100%"
        tooltip-effect="dark"
        :data="tableData"
        row-key="ID"
        @selection-change="handleSelectionChange"
        @sort-change="sortChange"
      >
        <el-table-column type="selection" width="55" />
        <el-table-column align="left" label="日期" prop="CreatedAt" width="180">
          <template #default="scope">{{ formatDate(scope.row.CreatedAt) }}</template>
        </el-table-column>
        <el-table-column sortable align="left" label="名称" prop="name" min-width="150" />
        <el-table-column sortable align="left" label="等级" prop="level" width="120">
          <template #default="scope">{{ formatLevel(scope.row.level) }}</template>
        </el-table-column>
        <el-table-column sortable align="left" label="价格" prop="price" width="120">
          <template #default="scope">￥{{ Number(scope.row.price).toFixed(2) }}</template>
        </el-table-column>
        <el-table-column sortable align="left" label="有效期(天)" prop="expiration" width="120" />
        <el-table-column align="left" label="描述" prop="des" min-width="200" show-overflow-tooltip />
        <el-table-column align="left" label="操作" fixed="right" :min-width="appStore.operateMinWith">
          <template #default="scope">
            <el-button type="primary" link icon="edit" class="table-button" @click="updateRow(scope.row)">编辑</el-button>
            <el-button type="primary" link icon="delete" @click="deleteRow(scope.row)">删除</el-button>
          </template>
        </el-table-column>
      </el-table>
      <div class="gva-pagination">
        <el-pagination
          layout="total, sizes, prev, pager, next, jumper"
          :current-page="page"
          :page-size="pageSize"
          :page-sizes="[10, 30, 50, 100]"
          :total="total"
          @current-change="handleCurrentChange"
          @size-change="handleSizeChange"
        />
      </div>
    </div>

    <el-drawer destroy-on-close :size="appStore.drawerSize" v-model="dialogFormVisible" :show-close="false" :before-close="closeDialog">
      <template #header>
        <div class="flex justify-between items-center">
          <span class="text-lg">{{type==='create'?'新增VIP':'编辑VIP'}}</span>
          <div>
            <el-button :loading="btnLoading" type="primary" @click="enterDialog">确 定</el-button>
            <el-button @click="closeDialog">取 消</el-button>
          </div>
        </div>
      </template>
      <el-form :model="formData" label-position="top" ref="elFormRef" :rules="rule" label-width="80px">
        <el-form-item label="名称" prop="name">
          <el-input v-model="formData.name" placeholder="请输入名称" />
        </el-form-item>
        <el-form-item label="等级" prop="level">
          <el-select v-model="formData.level" placeholder="请选择等级">
            <el-option :value="1" label="Vip" />
            <el-option :value="2" label="Svip" />
            <el-option :value="3" label="讲师会员" />
          </el-select>
        </el-form-item>
        <el-form-item v-if="formData.level === 3" label="讲师" prop="teacher_name">
          <div style="display:flex;gap:8px;align-items:center;width:100%">
            <el-input v-model="formData.teacher_name" placeholder="请选择讲师" readonly />
            <el-button type="primary" @click="openTeacherDialog">选择讲师</el-button>
          </div>
        </el-form-item>
        <el-form-item label="价格(元)" prop="price">
          <el-input v-model.number="formData.price" placeholder="请输入价格(数字)" />
        </el-form-item>
        <el-form-item label="有效期(天)" prop="expiration">
          <el-input v-model.number="formData.expiration" placeholder="请输入有效期天数(数字)" />
        </el-form-item>
        <el-form-item label="描述" prop="des">
          <el-input v-model="formData.des" placeholder="请输入描述" type="textarea" :rows="3" />
        </el-form-item>
      </el-form>
    </el-drawer>
    <user-choose ref="userChooseRef" title="讲师" @getRecipientInfo="onChooseTeacher" />
  </div>
</template>

<script setup>
import { list as apiList, add as apiAdd, edit as apiEdit, del as apiDel, detail as apiDetail } from '@/api/goods/vip'
import { ElMessage, ElMessageBox } from 'element-plus'
import { ref, reactive } from 'vue'
import { useAppStore } from '@/pinia'
import { formatDate } from '@/utils/format'
import UserChoose from '@/components/userChoose/index.vue'

defineOptions({
  name: 'VipList'
})
// 讲师选择组件注册
const userChooseRef = ref()


const appStore = useAppStore()
const btnLoading = ref(false)

const elFormRef = ref()
const elSearchFormRef = ref()

const showAllQuery = ref(false)

const formData = ref({
  ID: undefined,
  name: '',
  level: undefined,
  price: undefined,
  expiration: undefined,
  des: '',
  teacher_id: undefined,
  teacher_name: ''
})

const rule = reactive({
  name: [
    { required: true, message: '请输入名称', trigger: ['blur','input'] },
    { whitespace: true, message: '不能只输入空格', trigger: ['blur','input'] }
  ],
  level: [ { required: true, message: '请输入等级', trigger: ['blur','input','change'] } ],
  price: [ { required: true, message: '请输入价格', trigger: ['blur','input'] } ],
  expiration: [ { required: true, message: '请输入有效期', trigger: ['blur','input'] } ],
  teacher_name: [ { validator: (r,v,cb)=>{ if(formData.value.level===3 && !v){ cb(new Error('请选择讲师')); } else { cb(); } }, trigger:['change','blur'] } ]
})

const searchRule = reactive({
  createdAt: [
    { validator: (rule, value, callback) => {
      if (searchInfo.value.startCreatedAt && !searchInfo.value.endCreatedAt) {
        callback(new Error('请填写结束日期'))
      } else if (!searchInfo.value.startCreatedAt && searchInfo.value.endCreatedAt) {
        callback(new Error('请填写开始日期'))
      } else if (searchInfo.value.startCreatedAt && searchInfo.value.endCreatedAt && (searchInfo.value.startCreatedAt.getTime() === searchInfo.value.endCreatedAt.getTime() || searchInfo.value.startCreatedAt.getTime() > searchInfo.value.endCreatedAt.getTime())) {
        callback(new Error('开始日期应当早于结束日期'))
      } else {
        callback()
      }
    }, trigger: 'change' }
  ],
})

const page = ref(1)
const total = ref(0)
const pageSize = ref(10)
const tableData = ref([])
const searchInfo = ref({})

const sortChange = ({ prop, order }) => {
  const sortMap = {
    name: 'name',
    level: 'level',
    price: 'price',
    expiration: 'expiration',
  }
  let sort = sortMap[prop] || prop
  searchInfo.value.sort = sort
  searchInfo.value.order = order
  getTableData()
}

const onReset = () => {
  searchInfo.value = {}
  getTableData()
}

const onSubmit = () => {
  elSearchFormRef.value?.validate(async (valid) => {
    if (!valid) return
    page.value = 1
    getTableData()
  })
}

const handleSizeChange = (val) => {
  pageSize.value = val
  getTableData()
}

const handleCurrentChange = (val) => {
  page.value = val
  getTableData()
}

const getTableData = async () => {
  const res = await apiList({ page: page.value, pageSize: pageSize.value, ...searchInfo.value })
  if (res.code === 0) {
    tableData.value = res.data.list
    total.value = res.data.total
    page.value = res.data.page
    pageSize.value = res.data.pageSize
  }
}

getTableData()

const multipleSelection = ref([])
const handleSelectionChange = (val) => {
  multipleSelection.value = val
}

const type = ref('')

const formatLevel = (level) => {
  if (level === 1) return 'Vip'
  if (level === 2) return 'Svip'
  if (level === 3) return '讲师会员'
  return level
}

const updateRow = async (row) => {
  const res = await apiDetail(row.ID)
  type.value = 'update'
  if (res.code === 0) {
    formData.value = { ...res.data }
    dialogFormVisible.value = true
  }
}

const deleteRow = async (row) => {
  ElMessageBox.confirm('确定要删除吗?', '提示', {
    confirmButtonText: '确定',
    cancelButtonText: '取消',
    type: 'warning'
  }).then(async () => {
    const res = await apiDel({ ID: row.ID })
    if (res.code === 0) {
      ElMessage({ type: 'success', message: '删除成功' })
      if (tableData.value.length === 1 && page.value > 1) {
        page.value--
      }
      getTableData()
    }
  })
}

const onDelete = async () => {
  ElMessageBox.confirm('确定要删除吗?', '提示', {
    confirmButtonText: '确定',
    cancelButtonText: '取消',
    type: 'warning'
  }).then(async () => {
    const IDs = []
    if (multipleSelection.value.length === 0) {
      ElMessage({ type: 'warning', message: '请选择要删除的数据' })
      return
    }
    multipleSelection.value.forEach(item => IDs.push(item.ID))
    // 后端若支持批量删除可改为批量接口；这里逐个删除
    for (const id of IDs) {
      await apiDel({ ID: id })
    }
    ElMessage({ type: 'success', message: '删除成功' })
    if (tableData.value.length === IDs.length && page.value > 1) {
      page.value--
    }
    getTableData()
  })
}

const dialogFormVisible = ref(false)
const openDialog = () => {
  type.value = 'create'
  dialogFormVisible.value = true
}
const closeDialog = () => {
  dialogFormVisible.value = false
  formData.value = { ID: undefined, name: '', level: undefined, price: undefined, expiration: undefined, des: '' }
}
const enterDialog = async () => {
  btnLoading.value = true
  elFormRef.value?.validate(async (valid) => {
    if (!valid) return (btnLoading.value = false)
    let res
    switch (type.value) {
      case 'create':
        res = await apiAdd(formData.value)
        break
      case 'update':
        res = await apiEdit(formData.value)
        break
      default:
        res = await apiAdd(formData.value)
        break
    }
    btnLoading.value = false
    if (res.code === 0) {
      ElMessage({ type: 'success', message: '创建/更改成功' })
      closeDialog()
      getTableData()
    }
  })
}

// 选择讲师
const openTeacherDialog = () => {
  userChooseRef.value?.open()
}
const onChooseTeacher = (teacher) => {
  if (!teacher) return
  formData.value.teacher_id = teacher.ID
  formData.value.teacher_name = teacher.nick_name
}
</script>

<style>

</style>
