import { useState } from 'react'
import { useQuery, useQueryClient } from '@tanstack/react-query'
import { Card, Row, Col, Progress, Table, Tag, Typography, Button, Space, Tooltip, App } from 'antd'
import { CloudServerOutlined, ReloadOutlined, CopyOutlined, GlobalOutlined } from '@ant-design/icons'
import { getServerMetrics, type ServerInfo, type ProcessInfo } from '@/services/server-api'

const { Text, Title } = Typography

function CopyTag({ text, icon, color }: { text: string; icon?: React.ReactNode; color?: string }) {
  const { message } = App.useApp()
  return (
    <Tag color={color || 'default'} style={{ cursor: 'pointer' }}
      onClick={async () => {
        try { await navigator.clipboard.writeText(text); message.success(`已复制: ${text}`) }
        catch { message.error('复制失败') }
      }}>
      {icon}{text} <CopyOutlined style={{ fontSize: 10 }} />
    </Tag>
  )
}

function ServerCard({ server }: { server: ServerInfo }) {
  const cpuColor = server.cpu.usagePercent > 80 ? '#ff4d4f' : server.cpu.usagePercent > 50 ? '#faad14' : '#52c41a'
  const memColor = server.memory.percent > 80 ? '#ff4d4f' : server.memory.percent > 50 ? '#faad14' : '#52c41a'

  return (
    <Card title={<Space><CloudServerOutlined />{server.name}<Tag color="blue">{server.role}</Tag></Space>} style={{ height: '100%' }}>
      {/* IP & domains — fixed height */}
      <div style={{ marginBottom: 12, height: 54, overflow: 'hidden' }}>
        <Space wrap size={[4, 4]}>
          <CopyTag text={server.network.publicIp} icon="🌐 " color="cyan" />
          <CopyTag text={server.network.privateIp} icon="🔒 " />
          {server.network.domains.map(d => (
            <CopyTag key={d} text={d} icon={<GlobalOutlined style={{ marginRight: 2 }} />} color="blue" />
          ))}
        </Space>
      </div>

      {/* Metrics — fixed height grid */}
      <div style={{ marginBottom: 10, minHeight: 72 }}>
        <Row gutter={[16, 8]}>
          <Col span={8}>
            <Text type="secondary" style={{ fontSize: 11 }}>CPU · {server.cpu.cores}核</Text>
            <Progress percent={server.cpu.usagePercent} strokeColor={cpuColor} size="small" format={p => `${p}%`} />
          </Col>
          <Col span={8}>
            <Text type="secondary" style={{ fontSize: 11 }}>内存 {server.memory.percent}%</Text>
            <Progress percent={server.memory.percent} strokeColor={memColor} size="small" />
            <Text style={{ fontSize: 10 }} type="secondary">{server.memory.used}/{server.memory.total}</Text>
          </Col>
          <Col span={8}>
            <Text type="secondary" style={{ fontSize: 11, marginBottom: 2 }}>磁盘</Text>
            {(server.disks || []).map(d => (
              <div key={d.mount} style={{ marginBottom: 2, display: 'flex', alignItems: 'center', gap: 4 }}>
                <Text style={{ fontSize: 10, width: 32 }} type="secondary">{d.mount}</Text>
                <Progress percent={d.percent} size="small" strokeColor={d.percent > 80 ? '#ff4d4f' : '#1677ff'} style={{ flex: 1, margin: 0 }} />
                <Text style={{ fontSize: 10, whiteSpace: 'nowrap' }}>{d.used}</Text>
              </div>
            ))}
          </Col>
        </Row>
      </div>

      {/* Uptime */}
      <div style={{ marginBottom: 12, minHeight: 22 }}>
        <Text style={{ fontSize: 14, fontWeight: 500 }}>🕐 {server.uptime}</Text>
      </div>

      {/* Process table — fixed height */}
      <Table
        dataSource={server.processes || []}
        rowKey="pid" size="small" pagination={false}
        
        style={{ marginTop: 0 }}
        columns={[
          { title: '进程', dataIndex: 'name', width: 110, ellipsis: true, render: (name: string, r: ProcessInfo) => (
            <Tooltip title={r.desc ? `${r.desc}\n${r.command}` : r.command}><span>{name}</span></Tooltip>
          )},
          { title: '说明', dataIndex: 'desc', width: 90, ellipsis: true, render: (d: string) => <Text type="secondary" style={{ fontSize: 12 }}>{d || '-'}</Text> },
          { title: 'CPU', dataIndex: 'cpu', width: 50 },
          { title: 'MEM', dataIndex: 'mem', width: 50 },
        ]}
        locale={{ emptyText: '暂无' }}
      />
    </Card>
  )
}

function ServersContent() {
  const qc = useQueryClient()
  const [refreshing, setRefreshing] = useState(false)

  const { data } = useQuery({
    queryKey: ['servers', 'metrics'],
    queryFn: getServerMetrics,
    staleTime: 30_000,
  })

  const handleRefresh = async () => {
    setRefreshing(true)
    await qc.invalidateQueries({ queryKey: ['servers', 'metrics'] })
    setTimeout(() => setRefreshing(false), 800)
  }

  return (
    <div>
      <div style={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', marginBottom: 16 }}>
        <Title level={5} style={{ margin: 0 }}><CloudServerOutlined /> 服务器运维</Title>
        <Button icon={<ReloadOutlined spin={refreshing} />} onClick={handleRefresh} loading={refreshing}>刷新</Button>
      </div>
      <Row gutter={[16, 16]}>
        {(data?.servers || []).map(s => (
          <Col xs={24} lg={12} key={s.hostname}>
            <ServerCard server={s} />
          </Col>
        ))}
      </Row>
    </div>
  )
}

export default function ServersPage() {
  return <App><ServersContent /></App>
}