import { memo, useEffect, useState } from 'react'
import { Link } from 'react-router'
import { Play, Square, RotateCw, Trash2, Terminal, ExternalLink, Pencil, Rocket } from 'lucide-react'
import { Button } from '@/components/ui/button'
import { StatusBadge } from '@/components/StatusBadge'
import { deploymentApi } from '@/api'
import { ResourceCard } from '@/components/ResourceCard'
import type { LokiDeployment } from '@/types'

/** 部署目标展示：优先集群，其次主机 */
const getTargetLabel = (d: LokiDeployment) => {
  if (d.cluster) return `集群：${d.cluster.name}`
  if (d.host) return `主机：${d.host.name}`
  return '未知'
}

interface DeploymentCardProps {
  deployment: LokiDeployment
  /** 部署/重启进行中的部署 ID（按钮 loading 态） */
  operating: number | null
  onDeploy: (id: number) => void
  onStop: (id: number) => void
  onRestart: (id: number) => void
  onDelete: (d: LokiDeployment) => void
  onViewLogs: (d: LokiDeployment) => void
  onEditRetention: (d: LokiDeployment) => void
}

/** 部署卡片 — 列表项展示与操作入口（部署/停止/重启/日志/访问/删除） */
export const DeploymentCard = memo(function DeploymentCard({
  deployment: d,
  operating,
  onDeploy,
  onStop,
  onRestart,
  onDelete,
  onViewLogs,
  onEditRetention,
}: DeploymentCardProps) {
  // Loki 就绪探测(运行中时经数据源代理 /ready)
  const [ready, setReady] = useState<boolean | null>(null)
  useEffect(() => {
    if (d.status !== 'running') return
    let cancelled = false
    deploymentApi
      .ready(d.id)
      .then((r) => {
        if (!cancelled) setReady(r.ready)
      })
      .catch(() => {
        if (!cancelled) setReady(false)
      })
    return () => {
      cancelled = true
    }
  }, [d.id, d.status])

  const isDeploying = d.status === 'deploying'
  const isBusy = operating === d.id
  const canDeploy = d.status === 'pending' || d.status === 'failed' || d.status === 'stopped'

  return (
    <ResourceCard
      icon={Rocket}
      iconClassName={d.status === 'running' ? 'text-success' : d.status === 'failed' ? 'text-destructive' : 'text-muted-foreground'}
      title={d.name}
      titleExtra={
        d.status === 'running' && ready !== null ? (
          <span
            className={`w-2 h-2 rounded-full shrink-0 ${ready ? 'bg-success' : 'bg-destructive'}`}
            title={ready ? 'Loki 就绪' : 'Loki 未就绪'}
          />
        ) : undefined
      }
      badges={<StatusBadge status={d.status} />}
      description={d.description || d.uuid}
      fields={[
        { label: '方式', value: d.mode === 'host-docker' ? '主机 Docker' : d.mode === 'k8s-yaml' ? 'Kubernetes' : d.mode },
        { label: '版本', value: d.version },
        { label: '目标', value: getTargetLabel(d) },
        ...(d.mode !== 'host-docker' ? [
          { label: '命名空间', value: d.namespace || 'log' },
          { label: '副本', value: `${d.replicas} · 保留 ${d.retentionDays || 30} 天` },
        ] : [{ label: '保留', value: `${d.retentionDays || 30} 天` }]),
        { label: '存储', value: d.storageConfig?.name || '本地' },
        ...(d.endpoint ? [{ label: '访问', value: (
          <span className="text-primary">{d.endpoint.replace(/^https?:\/\//, '')}</span>
        ), title: d.endpoint }] : []),
        ...(d.grafanaEnabled && d.grafanaEndpoint ? [{ label: 'Grafana', value: (
          <a href={d.grafanaEndpoint} target="_blank" rel="noopener noreferrer" className="text-primary hover:underline" title={`${d.grafanaEndpoint}(admin/admin)`}>
            {d.grafanaEndpoint.replace(/^https?:\/\//, '')}
          </a>
        ) }] : []),
      ]}
      message={
        d.statusMessage ||
        (d.status === 'running'
          ? '提示：到「日志查询 → 数据源」关联 Loki 后即可查询；跨集群/公网访问需先为 Loki 配置 Ingress 域名。'
          : undefined)
      }
      actions={
        <>
          <Button variant="outline" size="sm" className="text-xs" onClick={() => onEditRetention(d)} disabled={isDeploying || isBusy}>
            <Pencil className="size-3 mr-1" />配置
          </Button>
          {canDeploy ? (
            <Button variant="outline" size="sm" className="flex-1 text-xs bg-success/10 text-primary hover:bg-success/20 border-success/30" onClick={() => onDeploy(d.id)} disabled={isBusy}>
              <Play className="size-3 mr-1" />{isBusy ? '部署中...' : '部署'}
            </Button>
          ) : isDeploying ? (
            <Button variant="outline" size="sm" className="flex-1 text-xs" disabled>
              <RotateCw className="size-3 mr-1 animate-spin" />部署中...
            </Button>
          ) : (
            <>
              <Button variant="outline" size="sm" className="flex-1 text-xs" onClick={() => onStop(d.id)}>
                <Square className="size-3 mr-1" />停止
              </Button>
              <Button variant="outline" size="sm" className="flex-1 text-xs" onClick={() => onRestart(d.id)} disabled={isBusy}>
                <RotateCw className={`size-3 mr-1 ${isBusy ? 'animate-spin' : ''}`} />重启
              </Button>
            </>
          )}
          {d.status === 'running' && (
            <>
              <Button variant="outline" size="sm" className="text-xs" asChild>
                <Link to="/logs">日志查询</Link>
              </Button>
              <Button variant="outline" size="sm" className="text-xs" asChild>
                <Link to="/collectors">采集器</Link>
              </Button>
            </>
          )}
          <Button variant="outline" size="sm" className="text-xs" onClick={() => onViewLogs(d)}>
            <Terminal className="size-3 mr-1" />日志
          </Button>
          {d.endpoint && (
            <Button variant="outline" size="sm" className="text-xs text-primary hover:text-primary/80" onClick={() => window.open(d.endpoint, '_blank', 'noopener,noreferrer')} title="浏览器访问">
              <ExternalLink className="size-3" />
            </Button>
          )}
          <Button variant="outline" size="sm" aria-label={`删除部署 ${d.name}`} className="text-destructive hover:text-destructive hover:bg-destructive/10" onClick={() => onDelete(d)}>
            <Trash2 className="size-3.5" />
          </Button>
        </>
      }
    />
  )
})