import { useQuery, useQueryClient } from '@tanstack/react-query'
import { Table, Card, Row, Col, Statistic, Button, Typography, Tabs } from 'antd'
import { ReloadOutlined, DashboardOutlined, CloudOutlined, NodeIndexOutlined } from '@ant-design/icons'
import { metricsAPI } from '@/api'
import dayjs from 'dayjs'

const { Title } = Typography

function MetricsPage() {
  const qc = useQueryClient()

  const { data: overview } = useQuery({ queryKey: ['metrics', 'overview'], queryFn: () => metricsAPI.overview(), staleTime: 10_000 })
  const { data: top } = useQuery({ queryKey: ['metrics', 'top'], queryFn: () => metricsAPI.top(), staleTime: 10_000 })
  const { data: recent } = useQuery({ queryKey: ['metrics', 'recent'], queryFn: () => metricsAPI.recent(), staleTime: 5_000 })
  const { data: ai } = useQuery({ queryKey: ['metrics', 'ai'], queryFn: () => metricsAPI.ai(), staleTime: 10_000 })
  const { data: worker } = useQuery({ queryKey: ['metrics', 'worker'], queryFn: () => metricsAPI.worker(), staleTime: 10_000 })

  const topCols = [
    { title: '接口', dataIndex: 'path', width: 300, ellipsis: true },
    { title: '方法', dataIndex: 'method', width: 70 },
    { title: '调用', dataIndex: 'calls', width: 70, align: 'center' as const },
    { title: '平均耗时', dataIndex: 'avgDuration', width: 100, align: 'center' as const, render: (v: number) => <span style={{ color: v > 1000 ? '#ff4d4f' : v > 500 ? '#faad14' : '#52c41a' }}>{v}ms</span> },
  ]

  const recentCols = [
    { title: '时间', dataIndex: 'createdAt', width: 140, render: (d: string) => dayjs(d).format('HH:mm:ss') },
    { title: '接口', dataIndex: 'path', ellipsis: true },
    { title: '方法', dataIndex: 'method', width: 60 },
    { title: '状态', dataIndex: 'statusCode', width: 60, render: (v: number) => <span style={{ color: v >= 400 ? '#ff4d4f' : '#52c41a' }}>{v}</span> },
    { title: '耗时', dataIndex: 'duration', width: 70, align: 'center' as const, render: (v: number) => `${v}ms` },
  ]

  const aiProviderCols = [
    { title: 'Provider', dataIndex: 'name', width: 120 },
    { title: '调用量', dataIndex: 'calls', width: 80, align: 'center' as const },
    { title: '平均耗时', dataIndex: 'avgLatencyMs', width: 100, align: 'center' as const, render: (v: number) => <span style={{ color: v > 5000 ? '#ff4d4f' : v > 2000 ? '#faad14' : '#52c41a' }}>{v}ms</span> },
    { title: '失败率', dataIndex: 'failureRate', width: 80, align: 'center' as const },
    { title: '成本', dataIndex: 'totalCost', width: 80, align: 'center' as const, render: (v: string) => `$${v}` },
  ]

  const workerCols = [
    { title: '队列', dataIndex: 'name', width: 160 },
    { title: '总任务', dataIndex: 'total', width: 80, align: 'center' as const },
    { title: '完成', dataIndex: 'completed', width: 80, align: 'center' as const },
    { title: '失败', dataIndex: 'failed', width: 80, align: 'center' as const, render: (v: number) => v > 0 ? <span style={{ color: '#ff4d4f' }}>{v}</span> : <span>0</span> },
    { title: '成功率', dataIndex: 'successRate', width: 80, align: 'center' as const },
  ]

  return (
    <div>
      <div style={{ display: 'flex', justifyContent: 'space-between', marginBottom: 16 }}>
        <Title level={5} style={{ margin: 0 }}><DashboardOutlined /> 接口监控</Title>
        <Button icon={<ReloadOutlined />} onClick={() => qc.invalidateQueries({ queryKey: ['metrics'] })}>刷新</Button>
      </div>

      <Row gutter={[16, 16]} style={{ marginBottom: 16 }}>
        <Col span={6}><Card size="small"><Statistic title="今日调用" value={overview?.todayCalls || 0} /></Card></Col>
        <Col span={6}><Card size="small"><Statistic title="平均耗时" value={overview?.avgDuration || 0} suffix="ms" valueStyle={{ color: (overview?.avgDuration || 0) > 500 ? '#ff4d4f' : '#52c41a' }} /></Card></Col>
        <Col span={6}><Card size="small"><Statistic title="错误数" value={overview?.errorCount || 0} valueStyle={{ color: (overview?.errorCount || 0) > 0 ? '#ff4d4f' : '#52c41a' }} /></Card></Col>
        <Col span={6}><Card size="small"><Statistic title="总调用" value={overview?.total || 0} /></Card></Col>
      </Row>

      <Tabs items={[
        {
          key: 'api', label: 'API 性能',
          children: (
            <Row gutter={[16, 16]}>
              <Col span={12}>
                <Card size="small" title="耗时排行"><Table dataSource={top || []} columns={topCols} rowKey="path" pagination={false} size="small" /></Card>
              </Col>
              <Col span={12}>
                <Card size="small" title="最近请求"><Table dataSource={recent || []} columns={recentCols} rowKey="id" pagination={false} size="small" /></Card>
              </Col>
            </Row>
          ),
        },
        {
          key: 'ai', label: <><CloudOutlined /> AI 性能</>,
          children: (
            <>
              <Row gutter={[16, 16]} style={{ marginBottom: 16 }}>
                <Col span={6}><Card size="small"><Statistic title="AI 总调用" value={ai?.totalCalls || 0} suffix={` / ${ai?.days || 7}d`} /></Card></Col>
                <Col span={6}><Card size="small"><Statistic title="Provider 数" value={ai?.providers?.length || 0} /></Card></Col>
                <Col span={6}><Card size="small"><Statistic title="模型数" value={ai?.models?.length || 0} /></Card></Col>
                <Col span={6}><Card size="small"><Statistic title="平均耗时" value={ai?.providers?.[0]?.avgLatencyMs || 0} suffix="ms" /></Card></Col>
              </Row>
              <Row gutter={[16, 16]}>
                <Col span={12}>
                  <Card size="small" title="按 Provider"><Table dataSource={ai?.providers || []} columns={aiProviderCols} rowKey="name" pagination={false} size="small" /></Card>
                </Col>
                <Col span={12}>
                  <Card size="small" title="按模型"><Table dataSource={ai?.models || []} columns={aiProviderCols} rowKey="name" pagination={false} size="small" /></Card>
                </Col>
              </Row>
            </>
          ),
        },
        {
          key: 'worker', label: <><NodeIndexOutlined /> Worker 性能</>,
          children: (
            <>
              <Row gutter={[16, 16]} style={{ marginBottom: 16 }}>
                <Col span={6}><Card size="small"><Statistic title="任务总数" value={worker?.totalTasks || 0} suffix={` / ${worker?.days || 7}d`} /></Card></Col>
                <Col span={6}><Card size="small"><Statistic title="队列数" value={worker?.queues?.length || 0} /></Card></Col>
                <Col span={6}><Card size="small"><Statistic title="成功率" value={worker?.queues?.[0]?.successRate || '0%'} /></Card></Col>
                <Col span={6}><Card size="small"><Statistic title="失败" value={worker?.queues?.reduce((s: number, q: any) => s + q.failed, 0) || 0} valueStyle={{ color: '#ff4d4f' }} /></Card></Col>
              </Row>
              <Card size="small" title="按队列">
                <Table dataSource={worker?.queues || []} columns={workerCols} rowKey="name" pagination={false} size="small" />
              </Card>
            </>
          ),
        },
      ]} />
    </div>
  )
}

export default MetricsPage