/**
 * KRA - System Error Log Page
 * 系统错误日志页面 - 查看、删除错误日志
 */
import React, { useState, useEffect } from 'react';
import {
  Card,
  Table,
  Button,
  Space,
  Form,
  Input,
  DatePicker,
  Drawer,
  Descriptions,
  Tag,
  message,
  Tooltip,
  Popconfirm,
} from 'antd';
import type { ColumnsType } from 'antd/es/table';
import {
  SearchOutlined,
  ReloadOutlined,
  DeleteOutlined,
  InfoCircleOutlined,
  QuestionCircleOutlined,
  DownOutlined,
  UpOutlined,
  RobotOutlined,
} from '@ant-design/icons';
import { PageContainer } from '@ant-design/pro-components';
import {
  getSysErrorList,
  getSysErrorById,
  deleteSysError,
  deleteSysErrorByIds,
} from '@/services/kratos/sysError';
import { formatDate } from '@/utils/date';
import styles from './index.less';

const { RangePicker } = DatePicker;

interface SysError {
  ID: number;
  CreatedAt: string;
  form: string;
  level: string;
  status: string;
  info: string;
  solution?: string;
}

// Level tag mapping
const levelTagMap: Record<string, string> = {
  fatal: 'error',
  error: 'warning',
};

const levelLabelMap: Record<string, string> = {
  fatal: '致命错误',
  error: '一般错误',
};

// Status tag mapping
const statusTagMap: Record<string, string> = {
  '未处理': 'default',
  '处理中': 'processing',
  '处理完成': 'success',
  '处理失败': 'error',
};

const statusLabelMap: Record<string, string> = {
  '未处理': '未处理',
  '处理中': '处理中',
  '处理完成': '处理完成',
  '处理失败': '处理失败',
};

const SysErrorPage: React.FC = () => {
  const [form] = Form.useForm();
  const [loading, setLoading] = useState(false);
  const [dataSource, setDataSource] = useState<SysError[]>([]);
  const [total, setTotal] = useState(0);
  const [current, setCurrent] = useState(1);
  const [pageSize, setPageSize] = useState(10);
  const [selectedRowKeys, setSelectedRowKeys] = useState<React.Key[]>([]);
  const [showAllQuery, setShowAllQuery] = useState(false);
  
  // Detail drawer
  const [detailVisible, setDetailVisible] = useState(false);
  const [detailData, setDetailData] = useState<SysError | null>(null);

  // Fetch table data
  const fetchData = async () => {
    setLoading(true);
    try {
      const values = form.getFieldsValue();
      const params: any = {
        page: current,
        pageSize,
        ...values,
      };
      if (values.createdAtRange) {
        params.startCreatedAt = values.createdAtRange[0]?.format('YYYY-MM-DD HH:mm:ss');
        params.endCreatedAt = values.createdAtRange[1]?.format('YYYY-MM-DD HH:mm:ss');
        delete params.createdAtRange;
      }
      const res = await getSysErrorList(params);
      if (res.code === 0) {
        setDataSource(res.data?.list || []);
        setTotal(res.data?.total || 0);
      }
    } catch (error) {
      console.error('获取错误日志列表失败:', error);
    } finally {
      setLoading(false);
    }
  };

  useEffect(() => {
    fetchData();
  }, [current, pageSize]);

  // Search
  const handleSearch = () => {
    setCurrent(1);
    fetchData();
  };

  // Reset
  const handleReset = () => {
    form.resetFields();
    setCurrent(1);
    fetchData();
  };

  // Delete single row
  const handleDelete = async (record: SysError) => {
    try {
      const res = await deleteSysError({ ID: record.ID });
      if (res.code === 0) {
        message.success('删除成功');
        fetchData();
      }
    } catch (error) {
      message.error('删除失败');
    }
  };

  // Batch delete
  const handleBatchDelete = async () => {
    if (selectedRowKeys.length === 0) {
      message.warning('请选择要删除的数据');
      return;
    }
    try {
      const res = await deleteSysErrorByIds({ IDs: selectedRowKeys as number[] });
      if (res.code === 0) {
        message.success('删除成功');
        setSelectedRowKeys([]);
        fetchData();
      }
    } catch (error) {
      message.error('删除失败');
    }
  };

  // View details
  const handleViewDetail = async (record: SysError) => {
    try {
      const res = await getSysErrorById({ ID: record.ID });
      if (res.code === 0) {
        setDetailData(res.data?.reSysError || res.data);
        setDetailVisible(true);
      }
    } catch (error) {
      message.error('获取详情失败');
    }
  };

  // Get AI solution (placeholder - would need backend support)
  const handleGetSolution = async (id: number) => {
    message.info('AI方案功能需要后端支持');
  };


  const columns: ColumnsType<SysError> = [
    {
      title: '日期',
      dataIndex: 'CreatedAt',
      key: 'CreatedAt',
      width: 180,
      sorter: true,
      render: (text) => formatDate(text),
    },
    {
      title: '错误来源',
      dataIndex: 'form',
      key: 'form',
      width: 120,
    },
    {
      title: '错误等级',
      dataIndex: 'level',
      key: 'level',
      width: 120,
      render: (level) => (
        <Tag color={levelTagMap[level] || 'default'}>
          {levelLabelMap[level] || '一般错误'}
        </Tag>
      ),
    },
    {
      title: '处理状态',
      dataIndex: 'status',
      key: 'status',
      width: 140,
      render: (status) => (
        <Tag color={statusTagMap[status] || 'default'}>
          {statusLabelMap[status] || '未处理'}
        </Tag>
      ),
    },
    {
      title: '错误内容',
      dataIndex: 'info',
      key: 'info',
      width: 240,
      ellipsis: {
        showTitle: false,
      },
      render: (text) => (
        <Tooltip placement="topLeft" title={text}>
          {text}
        </Tooltip>
      ),
    },
    {
      title: '解决方案',
      dataIndex: 'solution',
      key: 'solution',
      width: 120,
      ellipsis: {
        showTitle: false,
      },
      render: (text) => (
        <Tooltip placement="topLeft" title={text}>
          {text || '-'}
        </Tooltip>
      ),
    },
    {
      title: '操作',
      key: 'action',
      fixed: 'right',
      width: 280,
      render: (_, record) => (
        <Space>
          {record.status !== '处理中' && (
            <Button
              type="link"
              icon={<RobotOutlined />}
              onClick={() => handleGetSolution(record.ID)}
            >
              方案
            </Button>
          )}
          <Button
            type="link"
            icon={<InfoCircleOutlined />}
            onClick={() => handleViewDetail(record)}
          >
            查看
          </Button>
          <Popconfirm
            title="确定要删除吗?"
            onConfirm={() => handleDelete(record)}
            okText="确定"
            cancelText="取消"
          >
            <Button type="link" danger icon={<DeleteOutlined />}>
              删除
            </Button>
          </Popconfirm>
        </Space>
      ),
    },
  ];

  return (
    <PageContainer>
      {/* Search Form */}
      <Card className={styles.searchCard}>
        <Form form={form} layout="inline" onFinish={handleSearch}>
          <Form.Item
            name="createdAtRange"
            label={
              <span>
                创建日期
                <Tooltip title="搜索范围是开始日期（包含）至结束日期（不包含）">
                  <QuestionCircleOutlined style={{ marginLeft: 4 }} />
                </Tooltip>
              </span>
            }
          >
            <RangePicker showTime style={{ width: 380 }} />
          </Form.Item>
          <Form.Item name="form" label="错误来源">
            <Input placeholder="搜索条件" />
          </Form.Item>
          <Form.Item name="info" label="错误内容">
            <Input placeholder="搜索条件" />
          </Form.Item>
          {showAllQuery && (
            <>
              {/* Additional query fields can be added here */}
            </>
          )}
          <Form.Item>
            <Space>
              <Button type="primary" icon={<SearchOutlined />} htmlType="submit">
                查询
              </Button>
              <Button icon={<ReloadOutlined />} onClick={handleReset}>
                重置
              </Button>
              <Button
                type="link"
                icon={showAllQuery ? <UpOutlined /> : <DownOutlined />}
                onClick={() => setShowAllQuery(!showAllQuery)}
              >
                {showAllQuery ? '收起' : '展开'}
              </Button>
            </Space>
          </Form.Item>
        </Form>
      </Card>

      {/* Table */}
      <Card>
        <div className={styles.toolbar}>
          <Space>
            <Popconfirm
              title="确定要删除选中的数据吗?"
              onConfirm={handleBatchDelete}
              okText="确定"
              cancelText="取消"
              disabled={selectedRowKeys.length === 0}
            >
              <Button
                icon={<DeleteOutlined />}
                disabled={selectedRowKeys.length === 0}
              >
                删除
              </Button>
            </Popconfirm>
          </Space>
        </div>
        <Table
          rowKey="ID"
          columns={columns}
          dataSource={dataSource}
          loading={loading}
          rowSelection={{
            selectedRowKeys,
            onChange: setSelectedRowKeys,
          }}
          pagination={{
            current,
            pageSize,
            total,
            showSizeChanger: true,
            showQuickJumper: true,
            showTotal: (t) => `共 ${t} 条`,
            onChange: (page, size) => {
              setCurrent(page);
              setPageSize(size);
            },
          }}
          scroll={{ x: 1200 }}
        />
      </Card>

      {/* Detail Drawer */}
      <Drawer
        title="查看"
        open={detailVisible}
        onClose={() => setDetailVisible(false)}
        width={600}
        destroyOnClose
      >
        {detailData && (
          <Descriptions column={2} bordered layout="vertical">
            <Descriptions.Item label="错误来源">
              {detailData.form}
            </Descriptions.Item>
            <Descriptions.Item label="错误等级">
              <Tag color={levelTagMap[detailData.level] || 'default'}>
                {levelLabelMap[detailData.level] || '一般错误'}
              </Tag>
            </Descriptions.Item>
            <Descriptions.Item label="处理状态">
              <Tag color={statusTagMap[detailData.status] || 'default'}>
                {statusLabelMap[detailData.status] || '未处理'}
              </Tag>
            </Descriptions.Item>
            <Descriptions.Item label="错误内容" span={2}>
              <pre className={styles.preContent}>{detailData.info}</pre>
            </Descriptions.Item>
            <Descriptions.Item label="解决方案" span={2}>
              <pre className={styles.preContent}>{detailData.solution || '-'}</pre>
            </Descriptions.Item>
          </Descriptions>
        )}
      </Drawer>
    </PageContainer>
  );
};

export default SysErrorPage;