/**
 * 日志查看器
 */
import React, { useState } from 'react';
import { Card, Table, Tag, Input, Select, DatePicker, Space, Button, Drawer } from 'antd';
import {
  SearchOutlined,
  FilterOutlined,
  DownloadOutlined,
  EyeOutlined,
} from '@ant-design/icons';
import type { ColumnsType } from 'antd/es/table';

const { Search } = Input;
const { RangePicker } = DatePicker;
const { Option } = Select;

interface LogEntry {
  id: string;
  timestamp: string;
  level: 'INFO' | 'WARN' | 'ERROR' | 'DEBUG';
  service: string;
  user?: string;
  action: string;
  details: string;
  ip?: string;
  request_id?: string;
}

const LogViewer: React.FC = () => {
  const [selectedLog, setSelectedLog] = useState<LogEntry | null>(null);
  const [drawerVisible, setDrawerVisible] = useState(false);
  const [filterLevel, setFilterLevel] = useState<string>('all');
  const [filterService, setFilterService] = useState<string>('all');

  // 模拟日志数据
  const logs: LogEntry[] = [
    {
      id: '1',
      timestamp: '2024-06-17 17:15:32',
      level: 'INFO',
      service: 'API',
      user: 'user@example.com',
      action: 'User Login',
      details: 'User successfully logged in',
      ip: '192.168.1.100',
      request_id: 'req_abc123',
    },
    {
      id: '2',
      timestamp: '2024-06-17 17:14:28',
      level: 'WARN',
      service: 'API',
      user: 'admin@example.com',
      action: 'Failed Login Attempt',
      details: 'Invalid password provided (attempt 2/5)',
      ip: '192.168.1.101',
      request_id: 'req_def456',
    },
    {
      id: '3',
      timestamp: '2024-06-17 17:12:45',
      level: 'ERROR',
      service: 'Database',
      action: 'Connection Timeout',
      details: 'PostgreSQL connection pool exhausted, timeout after 5s',
      request_id: 'req_ghi789',
    },
    {
      id: '4',
      timestamp: '2024-06-17 17:10:15',
      level: 'INFO',
      service: 'Celery',
      action: 'Task Completed',
      details: 'Video processing task completed successfully',
      request_id: 'task_jkl012',
    },
    {
      id: '5',
      timestamp: '2024-06-17 17:08:52',
      level: 'WARN',
      service: 'ObjectStorage',
      action: 'Slow Upload',
      details: 'File upload took 3.2s (>1s threshold)',
      ip: '192.168.1.102',
      request_id: 'req_mno345',
    },
    {
      id: '6',
      timestamp: '2024-06-17 17:05:33',
      level: 'ERROR',
      service: 'API',
      user: 'user2@example.com',
      action: 'Permission Denied',
      details: 'User attempted to access admin endpoint without permission',
      ip: '192.168.1.103',
      request_id: 'req_pqr678',
    },
    {
      id: '7',
      timestamp: '2024-06-17 17:03:21',
      level: 'INFO',
      service: 'API',
      user: 'user3@example.com',
      action: 'Workspace Created',
      details: 'New workspace "My Project" created',
      ip: '192.168.1.104',
      request_id: 'req_stu901',
    },
    {
      id: '8',
      timestamp: '2024-06-17 17:01:08',
      level: 'DEBUG',
      service: 'Redis',
      action: 'Cache Miss',
      details: 'Cache key "workspace:123" not found, fetching from DB',
      request_id: 'req_vwx234',
    },
  ];

  const getLevelColor = (level: string) => {
    const colors: Record<string, string> = {
      INFO: 'blue',
      WARN: 'orange',
      ERROR: 'red',
      DEBUG: 'default',
    };
    return colors[level] || 'default';
  };

  const handleViewDetails = (log: LogEntry) => {
    setSelectedLog(log);
    setDrawerVisible(true);
  };

  const columns: ColumnsType<LogEntry> = [
    {
      title: '时间',
      dataIndex: 'timestamp',
      key: 'timestamp',
      width: 180,
      sorter: (a, b) => a.timestamp.localeCompare(b.timestamp),
    },
    {
      title: '级别',
      dataIndex: 'level',
      key: 'level',
      width: 100,
      render: (level: string) => <Tag color={getLevelColor(level)}>{level}</Tag>,
      filters: [
        { text: 'INFO', value: 'INFO' },
        { text: 'WARN', value: 'WARN' },
        { text: 'ERROR', value: 'ERROR' },
        { text: 'DEBUG', value: 'DEBUG' },
      ],
      onFilter: (value, record) => record.level === value,
    },
    {
      title: '服务',
      dataIndex: 'service',
      key: 'service',
      width: 120,
      filters: [
        { text: 'API', value: 'API' },
        { text: 'Database', value: 'Database' },
        { text: 'Celery', value: 'Celery' },
        { text: 'ObjectStorage', value: 'ObjectStorage' },
        { text: 'Redis', value: 'Redis' },
      ],
      onFilter: (value, record) => record.service === value,
    },
    {
      title: '用户',
      dataIndex: 'user',
      key: 'user',
      width: 180,
      render: (user?: string) => user || '-',
    },
    {
      title: '操作',
      dataIndex: 'action',
      key: 'action',
      width: 200,
    },
    {
      title: '详情',
      dataIndex: 'details',
      key: 'details',
      ellipsis: true,
    },
    {
      title: '操作',
      key: 'actions',
      width: 100,
      render: (_, record) => (
        <Button
          type="link"
          icon={<EyeOutlined />}
          onClick={() => handleViewDetails(record)}
        >
          查看
        </Button>
      ),
    },
  ];

  return (
    <div style={{ padding: '24px' }}>
      <h1>日志查看器</h1>

      <Card style={{ marginBottom: 16 }}>
        <Space size="middle" wrap>
          <Search
            placeholder="搜索日志内容..."
            allowClear
            enterButton={<SearchOutlined />}
            style={{ width: 300 }}
          />

          <Select
            placeholder="日志级别"
            style={{ width: 120 }}
            value={filterLevel}
            onChange={setFilterLevel}
          >
            <Option value="all">全部级别</Option>
            <Option value="INFO">INFO</Option>
            <Option value="WARN">WARN</Option>
            <Option value="ERROR">ERROR</Option>
            <Option value="DEBUG">DEBUG</Option>
          </Select>

          <Select
            placeholder="服务"
            style={{ width: 120 }}
            value={filterService}
            onChange={setFilterService}
          >
            <Option value="all">全部服务</Option>
            <Option value="API">API</Option>
            <Option value="Database">Database</Option>
            <Option value="Celery">Celery</Option>
            <Option value="ObjectStorage">Object Storage</Option>
            <Option value="Redis">Redis</Option>
          </Select>

          <RangePicker showTime />

          <Button icon={<FilterOutlined />} disabled>应用过滤暂未开放</Button>
          <Button icon={<DownloadOutlined />} disabled>导出日志暂未开放</Button>
        </Space>
      </Card>

      <Card>
        <Table
          columns={columns}
          dataSource={logs}
          rowKey="id"
          pagination={{
            total: logs.length,
            pageSize: 10,
            showSizeChanger: true,
            showTotal: (total) => `共 ${total} 条日志`,
          }}
          scroll={{ x: 1200 }}
        />
      </Card>

      {/* 日志详情抽屉 */}
      <Drawer
        title="日志详情"
        placement="right"
        width={600}
        open={drawerVisible}
        onClose={() => setDrawerVisible(false)}
      >
        {selectedLog && (
          <div>
            <div style={{ marginBottom: 16 }}>
              <strong>时间:</strong>
              <div style={{ marginTop: 4, color: '#595959' }}>{selectedLog.timestamp}</div>
            </div>

            <div style={{ marginBottom: 16 }}>
              <strong>级别:</strong>
              <div style={{ marginTop: 4 }}>
                <Tag color={getLevelColor(selectedLog.level)}>{selectedLog.level}</Tag>
              </div>
            </div>

            <div style={{ marginBottom: 16 }}>
              <strong>服务:</strong>
              <div style={{ marginTop: 4, color: '#595959' }}>{selectedLog.service}</div>
            </div>

            {selectedLog.user && (
              <div style={{ marginBottom: 16 }}>
                <strong>用户:</strong>
                <div style={{ marginTop: 4, color: '#595959' }}>{selectedLog.user}</div>
              </div>
            )}

            <div style={{ marginBottom: 16 }}>
              <strong>操作:</strong>
              <div style={{ marginTop: 4, color: '#595959' }}>{selectedLog.action}</div>
            </div>

            <div style={{ marginBottom: 16 }}>
              <strong>详细信息:</strong>
              <div
                style={{
                  marginTop: 4,
                  padding: 12,
                  background: '#f5f5f5',
                  borderRadius: 4,
                  color: '#595959',
                  whiteSpace: 'pre-wrap',
                }}
              >
                {selectedLog.details}
              </div>
            </div>

            {selectedLog.ip && (
              <div style={{ marginBottom: 16 }}>
                <strong>IP 地址:</strong>
                <div style={{ marginTop: 4, color: '#595959' }}>{selectedLog.ip}</div>
              </div>
            )}

            {selectedLog.request_id && (
              <div style={{ marginBottom: 16 }}>
                <strong>Request ID:</strong>
                <div style={{ marginTop: 4, fontFamily: 'monospace', color: '#595959' }}>
                  {selectedLog.request_id}
                </div>
              </div>
            )}
          </div>
        )}
      </Drawer>
    </div>
  );
};

export default LogViewer;

export const Component = LogViewer;