<script setup lang="ts">
import { onMounted, reactive, ref } from 'vue'
import { clientDownloadExcel, clientGet, clientPost } from '@/utils/request.ts'
import type { FormInstance, UploadProps } from 'element-plus'
import { ElForm, ElLoading, ElMessage, ElMessageBox } from 'element-plus'
import { Delete, Download, Edit, Plus, Refresh, Search, Upload } from '@element-plus/icons-vue'

// 假设 BaseResponse 和 PageType 在全局或 request.ts 中已定义
interface BaseResponse {
  code: number
  msg: string
}

interface PageType<T> {
  records: T[]
  total: number
  size: number
  current: number
  pages: number
}

interface Property {
  id: string // 主键
  entName?: string // 企业（机构）名称
  uniCode?: string // 统一社会信用代码
  certificateIssuanceDate?: string // 发证日期
  certificateType?: string // 证书类型
  productName?: string // 产品名称及单元(主)
  certificateNo?: string // 证书编号
  deadlineDate?: string // 截止日期
  createTime?: string // 记录创建时间
  updateTime?: string // 记录最后更新时间
  updateBy?: string // 修改人
  createBy?: string // 创建人
}

interface PropertyOneResponse extends BaseResponse {
  data: Property
}

interface PropertyListResponse extends BaseResponse {
  data: PageType<Property>
}

interface AddProperty {
  entName?: string // 企业（机构）名称
  uniCode?: string // 统一社会信用代码
  certificateIssuanceDate?: string // 发证日期
  certificateType?: string // 证书类型
  productName?: string // 产品名称及单元(主)
  certificateNo?: string // 证书编号
  deadlineDate?: string // 截止日期
}

interface UpdateProperty {
  id?: string
  entName?: string // 企业（机构）名称
  uniCode?: string // 统一社会信用代码
  certificateIssuanceDate?: string // 发证日期
  certificateType?: string // 证书类型
  productName?: string // 产品名称及单元(主)
  certificateNo?: string // 证书编号
  deadlineDate?: string // 截止日期
}

// 响应式状态变量
const tableData = ref<Property[]>([])
const total = ref(0)
const pageSize = ref(10)
const pageNum = ref(1)

const searchForm = reactive({
  entName: '',
  certificateType: '',
  certificateNo: '',
})

const dialogVisible = ref(false)
const dialogTitle = ref('')
const isEdit = ref(false)
const formData = reactive<Property>({})
const formRef = ref<FormInstance>()
const selectedIds = ref<string[]>([])

// 证书类型选项
const certificateTypeOptions = [
  { label: '营业执照', value: '营业执照' },
  { label: '资质证书', value: '资质证书' },
  { label: '经营许可证', value: '经营许可证' },
  { label: '其他', value: '其他' },
]

// 新增
const add = async (data: AddProperty) => {
  const res = await clientPost<AddProperty, BaseResponse>('/equalificationCertificate/save', {
    ...data,
  })

  if (res.code !== 200) {
    ElMessage.error(res.msg)
    return false
  }

  ElMessage.success(res.msg)
  return true
}

// 根据id获取数据
const getById = async (id: string) => {
  const res = await clientGet<null, PropertyOneResponse>('/equalificationCertificate/getById/' + id)
  if (res.code !== 200) {
    ElMessage.error(res.msg)
    return null
  }
  return res.data
}

// 分页获取数据
const getList = async () => {
  // 构建参数对象，只包含有值的搜索条件
  const params = {
    pageNum: pageNum.value,
    pageSize: pageSize.value,
    ...(searchForm.entName ? { entName: searchForm.entName } : {}),
    ...(searchForm.certificateType ? { certificateType: searchForm.certificateType } : {}),
    ...(searchForm.certificateNo ? { certificateNo: searchForm.certificateNo } : {}),
  }

  const res = await clientGet<
    {
      pageNum: number
      pageSize: number
      entName?: string
      certificateType?: string
      certificateNo?: string
    },
    PropertyListResponse
  >('/equalificationCertificate/findByPage', {
    params,
  })

  if (res.code !== 200) {
    ElMessage.error(res.msg)
    return
  }
  tableData.value = res.data.records
  total.value = res.data.total
}

// 批量删除
const delBatch = async (ids: string[]) => {
  const res = await clientPost<string[], BaseResponse>(
    '/equalificationCertificate/deleteBatch',
    ids,
  )
  if (res.code !== 200) {
    ElMessage.error(res.msg)
    return false
  }
  ElMessage.success(res.msg)
  return true
}

// 修改
const update = async (data: UpdateProperty) => {
  const res = await clientPost<UpdateProperty, BaseResponse>('/equalificationCertificate/update', {
    ...data,
  })
  if (res.code !== 200) {
    ElMessage.error(res.msg)
    return false
  }
  ElMessage.success(res.msg)
  return true
}

// 导出为excel
const exportExcel = async () => {
  const loading = ElLoading.service({
    lock: true,
    text: '导出中，请稍候...',
    background: 'rgba(0, 0, 0, 0.1)',
    fullscreen: true,
  })

  try {
    // 构建参数对象，只包含有值的搜索条件
    const params = {
      ...(searchForm.entName ? { entName: searchForm.entName } : {}),
      ...(searchForm.certificateType ? { certificateType: searchForm.certificateType } : {}),
      ...(searchForm.certificateNo ? { certificateNo: searchForm.certificateNo } : {}),
    }

    await clientDownloadExcel('/equalificationCertificate/exportData', {
      params,
    })
    ElMessage.success('导出成功')
  } catch (error) {
    console.error('导出失败:', error)
    ElMessage.error('导出失败')
  } finally {
    loading.close()
  }
}

// excel导入
const importExcel = async (file: File) => {
  const formData = new FormData()
  formData.append('file', file)

  const res = await clientPost<FormData, BaseResponse>(
    '/equalificationCertificate/importData',
    formData,
    {
      headers: {
        'Content-Type': 'multipart/form-data',
      },
    },
  )

  if (res.code !== 200) {
    ElMessage.error(res.msg)
    return false
  }
  ElMessage.success(res.msg)
  return true
}

// --- CRUD 操作和处理函数 ---

const handleAdd = () => {
  isEdit.value = false
  dialogTitle.value = '新增资质证书'
  // 重置表单数据
  Object.keys(formData).forEach((key) => delete formData[key as keyof Property])
  dialogVisible.value = true
}

const handleEdit = async (row: Property) => {
  isEdit.value = true
  dialogTitle.value = '编辑资质证书'
  const data = await getById(row.id)
  if (data) {
    // 直接将后端返回的字符串赋值给 formData
    // el-date-picker 配合 value-format 可以直接处理字符串
    Object.assign(formData, data)
    dialogVisible.value = true
  }
}

const handleDelete = async (id: string) => {
  ElMessageBox.confirm('确定删除此条记录吗?', '提示', {
    confirmButtonText: '确定',
    cancelButtonText: '取消',
    type: 'warning',
  })
    .then(async () => {
      const success = await delBatch([id])
      if (success) {
        getList()
      }
    })
    .catch(() => {
      ElMessage.info('已取消删除')
    })
}

const handleBatchDelete = () => {
  if (selectedIds.value.length === 0) {
    ElMessage.warning('请选择要删除的记录')
    return
  }
  ElMessageBox.confirm(`确定删除选中的 ${selectedIds.value.length} 条记录吗?`, '提示', {
    confirmButtonText: '确定',
    cancelButtonText: '取消',
    type: 'warning',
  })
    .then(async () => {
      const success = await delBatch(selectedIds.value)
      if (success) {
        getList()
      }
    })
    .catch(() => {
      ElMessage.info('已取消批量删除')
    })
}

const handleSearch = () => {
  pageNum.value = 1 // 搜索时重置到第一页
  getList()
}

const handleResetSearch = () => {
  searchForm.entName = ''
  searchForm.certificateType = ''
  searchForm.certificateNo = ''
  pageNum.value = 1
  getList()
}

const handleConfirm = async () => {
  if (!formRef.value) return
  await formRef.value.validate(async (valid) => {
    if (valid) {
      let success = false
      const dataToSend = { ...formData }

      if (isEdit.value) {
        success = await update(dataToSend)
      } else {
        success = await add(dataToSend)
      }
      if (success) {
        dialogVisible.value = false
        getList()
      }
    } else {
      ElMessage.error('请检查表单填写')
    }
  })
}

const handleCurrentChange = (val: number) => {
  pageNum.value = val
  getList()
}

const handleSizeChange = (val: number) => {
  pageSize.value = val
  pageNum.value = 1 // 页大小改变时重置到第一页
  getList()
}

const handleSelectionChange = (selection: Property[]) => {
  selectedIds.value = selection.map((item) => item.id)
}

const handleUploadSuccess: UploadProps['onSuccess'] = async (response, uploadFile) => {
  if (response && response.code === 200) {
    ElMessage.success('文件导入成功')
    getList()
  } else {
    ElMessage.error(`文件导入失败: ${response?.msg || '未知错误'}`)
  }
}

const handleUploadError: UploadProps['onError'] = (error) => {
  ElMessage.error(`文件导入失败: ${error.message}`)
}

const handleBeforeUpload: UploadProps['beforeUpload'] = (rawFile) => {
  const isExcel =
    rawFile.type === 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet' ||
    rawFile.type === 'application/vnd.ms-excel'
  if (!isExcel) {
    ElMessage.error('导入文件只能是 Excel 格式!')
    return false
  }
  return true
}

const init = () => {
  getList()
}

onMounted(() => {
  init()
})
</script>

<template>
  <div class="p-4">
    <h1 class="text-2xl font-bold mb-6">资质证书管理信息</h1>

    <!-- Search and Action Bar -->
    <div class="mb-6 p-4 bg-white rounded-lg shadow-sm flex flex-wrap items-center gap-4">
      <el-form :inline="true" :model="searchForm" class="flex-grow flex flex-wrap gap-x-4">
        <el-form-item label="企业名称">
          <el-input v-model="searchForm.entName" placeholder="输入企业名称" clearable />
        </el-form-item>
        <el-form-item label="证书类型">
          <el-select
            v-model="searchForm.certificateType"
            placeholder="请选择证书类型"
            style="width: 150px"
          >
            <el-option
              v-for="item in certificateTypeOptions"
              :key="item.value"
              :label="item.label"
              :value="item.value"
            />
          </el-select>
        </el-form-item>
        <el-form-item label="证书编号">
          <el-input v-model="searchForm.certificateNo" placeholder="请输入证书编号" clearable />
        </el-form-item>
        <el-form-item>
          <el-button type="primary" :icon="Search" @click="handleSearch">查询</el-button>
          <el-button :icon="Refresh" @click="handleResetSearch">重置</el-button>
        </el-form-item>
      </el-form>

      <div class="flex gap-2">
        <el-button type="primary" :icon="Plus" @click="handleAdd">新增</el-button>
        <el-button
          type="danger"
          :icon="Delete"
          @click="handleBatchDelete"
          :disabled="selectedIds.length === 0"
          >批量删除</el-button
        >
        <el-button type="success" :icon="Download" @click="exportExcel">导出</el-button>
        <el-upload
          class="inline-block ml-2"
          action="/api/equalificationCertificate/importData"
          :show-file-list="false"
          :on-success="handleUploadSuccess"
          :on-error="handleUploadError"
          :before-upload="handleBeforeUpload"
          :http-request="(options) => importExcel(options.file)"
        >
          <el-button type="info" :icon="Upload">导入</el-button>
        </el-upload>
      </div>
    </div>

    <!-- Table -->
    <div class="bg-white rounded-lg shadow-sm p-4 overflow-x-auto">
      <el-table
        :data="tableData"
        style="width: 100%"
        border
        @selection-change="handleSelectionChange"
      >
        <el-table-column type="selection" width="55" fixed="left" />
        <el-table-column prop="entName" label="企业（机构）名称" width="150" />
        <el-table-column prop="uniCode" label="统一社会信用代码" width="180" />
        <el-table-column prop="certificateType" label="证书类型" width="120">
          <template #default="{ row }">
            {{ row.certificateType || '-' }}
          </template>
        </el-table-column>
        <el-table-column prop="certificateNo" label="证书编号" width="150" />
        <el-table-column prop="certificateIssuanceDate" label="发证日期" width="150">
          <template #default="{ row }">
            {{
              row.certificateIssuanceDate
                ? new Date(row.certificateIssuanceDate).toLocaleDateString('zh-CN')
                : '-'
            }}
          </template>
        </el-table-column>
        <el-table-column prop="deadlineDate" label="截止日期" width="150">
          <template #default="{ row }">
            {{ row.deadlineDate ? new Date(row.deadlineDate).toLocaleDateString('zh-CN') : '-' }}
          </template>
        </el-table-column>
        <el-table-column prop="productName" label="产品名称及单元" width="200" />
        <el-table-column label="操作" width="185" fixed="right">
          <template #default="{ row }">
            <el-button :icon="Edit" size="small" @click="handleEdit(row)">编辑</el-button>
            <el-button type="danger" :icon="Delete" size="small" @click="handleDelete(row.id)"
              >删除</el-button
            >
          </template>
        </el-table-column>
      </el-table>

      <!-- Pagination -->
      <div class="mt-4 flex justify-end">
        <el-pagination
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          :current-page="pageNum"
          :page-sizes="[10, 20, 50, 100]"
          :page-size="pageSize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total"
        />
      </div>
    </div>

    <!-- Add/Edit Dialog -->
    <el-dialog
      v-model="dialogVisible"
      :title="dialogTitle"
      width="800px"
      :close-on-click-modal="false"
      :close-on-press-escape="false"
    >
      <el-form
        :model="formData"
        ref="formRef"
        label-width="120px"
        class="grid grid-cols-1 md:grid-cols-2 gap-4"
      >
        <el-form-item
          label="企业（机构）名称"
          prop="entName"
          :rules="[{ required: true, message: '请输入企业（机构）名称', trigger: 'blur' }]"
        >
          <el-input v-model="formData.entName" placeholder="请输入企业（机构）名称" />
        </el-form-item>
        <el-form-item label="统一社会信用代码" prop="uniCode">
          <el-input v-model="formData.uniCode" placeholder="请输入统一社会信用代码" />
        </el-form-item>
        <el-form-item
          label="证书类型"
          prop="certificateType"
          :rules="[{ required: true, message: '请选择证书类型', trigger: 'change' }]"
        >
          <el-select
            v-model="formData.certificateType"
            placeholder="请选择证书类型"
            style="width: 100%"
          >
            <el-option
              v-for="item in certificateTypeOptions"
              :key="item.value"
              :label="item.label"
              :value="item.value"
            />
          </el-select>
        </el-form-item>
        <el-form-item
          label="证书编号"
          prop="certificateNo"
          :rules="[{ required: true, message: '请输入证书编号', trigger: 'blur' }]"
        >
          <el-input v-model="formData.certificateNo" placeholder="请输入证书编号" />
        </el-form-item>
        <el-form-item label="发证日期" prop="certificateIssuanceDate">
          <el-date-picker
            v-model="formData.certificateIssuanceDate"
            type="date"
            placeholder="选择发证日期"
            value-format="YYYY-MM-DD"
            style="width: 100%"
          />
        </el-form-item>
        <el-form-item label="截止日期" prop="deadlineDate">
          <el-date-picker
            v-model="formData.deadlineDate"
            type="date"
            placeholder="选择截止日期"
            value-format="YYYY-MM-DD"
            style="width: 100%"
          />
        </el-form-item>
        <el-form-item label="产品名称及单元" prop="productName" class="md:col-span-2">
          <el-input
            v-model="formData.productName"
            placeholder="请输入产品名称及单元"
            type="textarea"
            :rows="2"
          />
        </el-form-item>
      </el-form>
      <template #footer>
        <span class="dialog-footer">
          <el-button @click="dialogVisible = false">取消</el-button>
          <el-button type="primary" @click="handleConfirm">确定</el-button>
        </span>
      </template>
    </el-dialog>
  </div>
</template>

<style scoped>
/* Add any specific styles here if needed, otherwise UnoCSS handles most */
</style>
