/**
 * 表格数据管理组合式函数
 * 提供分页、搜索、选择等通用功能
 */
import { ref, reactive } from 'vue';
import { ElMessage, ElMessageBox } from 'element-plus';

export function useTableData(apiFunction, options = {}) {
  const {
    pageSize = 10,
    searchField = 'searchAll'
  } = options;

  // 响应式数据
  const tableData = ref([]);
  const loading = ref(false);
  const total = ref(0);
  const selectedRows = ref([]);

  // 查询参数
  const queryParams = reactive({
    [searchField]: '',
    current: 1,
    size: pageSize,
  });

  // 获取列表数据
  const getList = async () => {
    loading.value = true;
    try {
      const params = {
        [searchField]: queryParams[searchField],
        current: queryParams.current,
        size: queryParams.size,
        page: queryParams.current,
        pageSize: queryParams.size,
        pageNum: queryParams.current,
        limit: queryParams.size,
        offset: (queryParams.current - 1) * queryParams.size
      };

      const res = await apiFunction(params);
      tableData.value = res.data.records || [];
      total.value = res.data.total || 0;
    } catch (error) {
      ElMessage.error('获取数据失败');
      console.error('API错误:', error);
    } finally {
      loading.value = false;
    }
  };

  // 搜索
  const handleSearch = () => {
    queryParams.current = 1;
    getList();
  };

  // 重置搜索
  const handleReset = () => {
    queryParams[searchField] = '';
    handleSearch();
  };

  // 分页处理
  const handlePageChange = ({ page, limit }) => {
    if (page && page !== queryParams.current) {
      queryParams.current = page;
    }
    if (limit && limit !== queryParams.size) {
      queryParams.size = limit;
      queryParams.current = 1; // 改变每页大小时回到第一页
    }
    getList();
  };

  // 表格选择处理
  const handleSelectionChange = (selection) => {
    selectedRows.value = selection;
  };

  // 批量删除
  const deleteSelected = async (deleteFunction) => {
    if (selectedRows.value.length === 0) {
      ElMessage.warning('请选择要删除的数据');
      return;
    }

    try {
      await ElMessageBox.confirm(
        `确认删除选中的 ${selectedRows.value.length} 条数据吗？`,
        '删除确认',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      );

      const ids = selectedRows.value.map(row => row.id);
      await deleteFunction(ids);
      
      ElMessage.success('删除成功');
      selectedRows.value = [];
      getList();
    } catch (error) {
      if (error !== 'cancel') {
        ElMessage.error('删除失败');
        console.error('删除错误:', error);
      }
    }
  };

  // 刷新数据
  const refresh = () => {
    getList();
  };

  return {
    // 数据
    tableData,
    loading,
    total,
    selectedRows,
    queryParams,
    
    // 方法
    getList,
    handleSearch,
    handleReset,
    handlePageChange,
    handleSelectionChange,
    deleteSelected,
    refresh
  };
}