import * as dictApi from '@/servers/api/dict';
import {
  ActionType,
  PageContainer,
  ProColumns,
  ProTable,
} from '@ant-design/pro-components';
import { request } from '@umijs/max';
import { Button, Input, Layout, Space, Table, message } from 'antd';
import React, { useEffect, useRef, useState } from 'react';
import DictItemActions from '../../Dict/components/DictItemActions';
import DictItemModal from '../../Dict/components/DictItemModal';

const { Sider, Content } = Layout;

import { notAttributes } from './consts';

const AttributePage: React.FC = () => {
  // 左侧字典列表状态
  const [dicts, setDicts] = useState<any[]>([]);
  const [loadingDicts, setLoadingDicts] = useState(false);
  const [searchText, setSearchText] = useState('');
  const [selectedDict, setSelectedDict] = useState<any>(null);

  // 右侧字典项 ProTable 的引用
  const actionRef = useRef<ActionType>();

  // 字典项模态框状态(由 DictItemModal 组件管理)
  const [isDictItemModalVisible, setIsDictItemModalVisible] = useState(false);
  const [isEditDictItem, setIsEditDictItem] = useState(false);
  const [editingDictItemData, setEditingDictItemData] = useState<any>(null);

  // 导出字典项数据
  const handleExportDictItems = async () => {
    // 条件判断,确保已选择字典
    if (!selectedDict) {
      message.warning('请先选择字典');
      return;
    }

    try {
      // 获取当前字典的所有数据
      const response = await request('/dict/items', {
        params: {
          dictId: selectedDict.id,
        },
      });

      // 确保返回的是数组
      const data = Array.isArray(response) ? response : response?.data || [];

      // 条件判断,检查是否有数据可导出
      if (data.length === 0) {
        message.warning('当前字典没有数据可导出');
        return;
      }

      // 将数据转换为CSV格式
      const headers = [
        'name',
        'title',
        'titleCN',
        'value',
        'sort',
        'image',
        'shortName',
      ];
      const csvContent = [
        headers.join(','),
        ...data.map((item: any) =>
          headers
            .map((header) => {
              const value = item[header] || '';
              // 条件判断,如果值包含逗号或引号，需要转义
              if (
                typeof value === 'string' &&
                (value.includes(',') || value.includes('"'))
              ) {
                return `"${value.replace(/"/g, '""')}"`;
              }
              return value;
            })
            .join(','),
        ),
      ].join('\n');

      // 创建blob并下载
      const blob = new Blob(['\ufeff' + csvContent], {
        // 添加BOM以支持中文
        type: 'text/csv;charset=utf-8',
      });
      const url = window.URL.createObjectURL(blob);
      const link = document.createElement('a');
      link.href = url;
      link.setAttribute('download', `${selectedDict.name}_dict_items.csv`);
      document.body.appendChild(link);
      link.click();
      link.remove();
      window.URL.revokeObjectURL(url);

      message.success(`成功导出 ${data.length} 条数据`);
    } catch (error: any) {
      message.error('导出字典项失败:' + (error.message || '未知错误'));
    }
  };

  const fetchDicts = async (title?: string) => {
    setLoadingDicts(true);
    try {
      const res = await request('/dict/list', { params: { title } });
      // 条件判断,确保res是数组再进行过滤
      const dataList = Array.isArray(res) ? res : res?.data || [];
      const filtered = dataList.filter((d: any) => !notAttributes.has(d?.name));
      setDicts(filtered);
    } catch (error) {
      console.error('获取字典列表失败:', error);
      message.error('获取字典列表失败');
      setDicts([]);
    }
    setLoadingDicts(false);
  };

  // 组件挂载时初始化数据
  useEffect(() => {
    fetchDicts();
  }, []);

  // 搜索触发过滤
  const handleSearch = (value: string) => {
    fetchDicts(value);
  };

  // 打开添加字典项模态框
  const handleAddDictItem = () => {
    setIsEditDictItem(false);
    setEditingDictItemData(null);
    setIsDictItemModalVisible(true);
  };

  // 打开编辑字典项模态框
  const handleEditDictItem = (item: any) => {
    setIsEditDictItem(true);
    setEditingDictItemData(item);
    setIsDictItemModalVisible(true);
  };

  // 字典项表单提交(新增或编辑)
  const handleDictItemFormSubmit = async (values: any) => {
    try {
      if (isEditDictItem && editingDictItemData) {
        // 条件判断,存在编辑项则执行更新
        await request(`/dict/item/${editingDictItemData.id}`, {
          method: 'PUT',
          data: values,
        });
        message.success('更新成功');
      } else {
        // 否则执行新增,绑定到当前选择的字典
        await request('/dict/item', {
          method: 'POST',
          data: { ...values, dictId: selectedDict.id },
        });
        message.success('添加成功');
      }
      setIsDictItemModalVisible(false);
      actionRef.current?.reload(); // 刷新 ProTable
    } catch (error) {
      message.error(isEditDictItem ? '更新失败' : '添加失败');
    }
  };

  // 删除字典项
  const handleDeleteDictItem = async (itemId: number) => {
    try {
      const res = await request(`/dict/item/${itemId}`, { method: 'DELETE' });
      const isOk =
        typeof res === 'boolean'
          ? res
          : res && res.code === 0
          ? res.data === true || res.data === null
          : false;
      if (!isOk) {
        message.error('删除失败');
        return;
      }
      if (selectedDict?.id) {
        try {
          const list = await request('/dict/items', {
            params: {
              dictId: selectedDict.id,
            },
          });
          // 确保list是数组再进行some操作
          const dataList = Array.isArray(list) ? list : list?.data || [];
          const exists = dataList.some((it: any) => it.id === itemId);
          if (exists) {
            message.error('删除失败');
          } else {
            message.success('删除成功');
            actionRef.current?.reload();
          }
        } catch (error) {
          console.error('验证删除结果失败:', error);
          message.success('删除成功');
          actionRef.current?.reload();
        }
      } else {
        message.success('删除成功');
        actionRef.current?.reload();
      }
    } catch (error) {
      message.error('删除失败');
    }
  };

  // 左侧字典列表列定义(紧凑样式)
  const dictColumns = [
    { title: '名称', dataIndex: 'name', key: 'name' },
    { title: '标题', dataIndex: 'title', key: 'title' },
  ];

  // 右侧字典项列表列定义(紧凑样式)
  const dictItemColumns: ProColumns<any>[] = [
    {
      title: '名称',
      dataIndex: 'name',
      key: 'name',
      copyable: true,
      sorter: true,
    },
    {
      title: '标题',
      dataIndex: 'title',
      key: 'title',
      copyable: true,
      sorter: true,
    },
    {
      title: '中文标题',
      dataIndex: 'titleCN',
      key: 'titleCN',
      copyable: true,
      sorter: true,
    },
    {
      title: '简称',
      dataIndex: 'shortName',
      key: 'shortName',
      copyable: true,
      sorter: true,
    },
    {
      title: '图片',
      dataIndex: 'image',
      key: 'image',
      valueType: 'image',
      width: 80,
    },
    {
      title: '操作',
      key: 'action',
      valueType: 'option',
      render: (_: any, record: any) => (
        <Space size="small">
          <Button
            size="small"
            type="link"
            onClick={() => handleEditDictItem(record)}
          >
            编辑
          </Button>
          <Button
            size="small"
            type="link"
            danger
            onClick={() => handleDeleteDictItem(record.id)}
          >
            删除
          </Button>
        </Space>
      ),
    },
  ];

  return (
    <PageContainer>
      <Layout style={{ background: '#fff' }}>
        <Sider
          width={240}
          style={{
            background: '#fff',
            padding: '8px',
            borderRight: '1px solid #f0f0f0',
          }}
        >
          <Space direction="vertical" style={{ width: '100%' }} size="small">
            <Input.Search
              placeholder="搜索字典"
              onSearch={handleSearch}
              onChange={(e) => setSearchText(e.target.value)}
              enterButton
              allowClear
              size="small"
            />
          </Space>
          <div
            style={{
              marginTop: '8px',
              overflowY: 'auto',
              height: 'calc(100vh - 150px)',
            }}
          >
            <Table
              dataSource={dicts}
              columns={dictColumns}
              rowKey="id"
              loading={loadingDicts}
              size="small"
              onRow={(record) => ({
                onClick: () => {
                  // 条件判断,重复点击同一行则取消选择
                  if (selectedDict?.id === record.id) {
                    setSelectedDict(null);
                  } else {
                    setSelectedDict(record);
                  }
                },
              })}
              rowClassName={(record) =>
                selectedDict?.id === record.id ? 'ant-table-row-selected' : ''
              }
              pagination={false}
            />
          </div>
        </Sider>
        <Content style={{ padding: '8px' }}>
          <ProTable
            columns={dictItemColumns}
            actionRef={actionRef}
            request={async (params) => {
              // 当没有选择字典时,不发起请求
              if (!selectedDict?.id) {
                return {
                  data: [],
                  success: true,
                };
              }
              const { name, title } = params;
              try {
                const res = await request('/dict/items', {
                  params: {
                    dictId: selectedDict.id,
                    name,
                    title,
                  },
                });
                // 确保返回的是数组
                const data = Array.isArray(res) ? res : res?.data || [];
                return {
                  data: data,
                  success: true,
                };
              } catch (error) {
                console.error('获取字典项失败:', error);
                return {
                  data: [],
                  success: false,
                };
              }
            }}
            rowKey="id"
            search={{
              layout: 'vertical',
            }}
            pagination={false}
            options={{
              reload: true,
              density: false,
              setting: {
                draggable: true,
                checkable: true,
                checkedReset: false,
              },
              search: false,
              fullScreen: false,
            }}
            size="small"
            key={selectedDict?.id}
            headerTitle={
              <DictItemActions
                selectedDict={selectedDict}
                actionRef={actionRef}
                showExport={true}
                onImport={async (file: File, dictId: number) => {
                  // 创建 FormData 对象
                  const formData = new FormData();
                  // 添加文件到 FormData
                  formData.append('file', file);
                  // 添加字典 ID 到 FormData
                  formData.append('dictId', String(dictId));
                  // 调用导入字典项的 API
                  const response = await dictApi.dictcontrollerImportdictitems(
                    formData,
                  );
                  // 返回 JSON 响应
                  return await response.json();
                }}
                onExport={handleExportDictItems}
                onAdd={handleAddDictItem}
                onRefreshDicts={fetchDicts}
              />
            }
          />
        </Content>
      </Layout>

      {/* 字典项 Modal(添加或编辑) */}
      <DictItemModal
        visible={isDictItemModalVisible}
        isEdit={isEditDictItem}
        editingData={editingDictItemData}
        selectedDict={selectedDict}
        onCancel={() => {
          setIsDictItemModalVisible(false);
          setEditingDictItemData(null);
        }}
        onOk={handleDictItemFormSubmit}
      />
    </PageContainer>
  );
};

export default AttributePage;