// DeploymentView.tsx — 增强只读详情看板（对标 Kuboard）
// 作者: Logan <admin@attacker.club>
import { useState, Fragment } from 'react';
import { useNavigate } from 'react-router-dom';
import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
import { Button } from '@/components/ui/button';
import { Badge } from '@/components/ui/badge';
import {
  Table, TableBody, TableCell, TableHead, TableHeader, TableRow,
} from '@/components/ui/table';
import {
  Clock, Cpu, MemoryStick, HardDrive, Network, Activity,
  RotateCcw, FileCode, Server, Container, History, ChevronDown, ChevronRight,
} from 'lucide-react';
import { kubernetesApi } from '@/services/api';
import { useToast } from '@/hooks/use-toast';
import {
  formatK8sTime, formatDuration, elapsedSeconds, statusColor, STATUS_COLORS,
} from './k8s-yaml-utils';

interface PodItem { name: string; namespace?: string; status?: string; node_name?: string; node?: string; ip?: string; pod_ip?: string; restart_count?: number; age?: string; created_at?: string; start_time?: string; containers?: any[]; image?: string; images?: string[]; }

interface ReplicaSetItem { name: string; namespace?: string; replicas?: number; ready_replicas?: number; available_replicas?: number; image?: string; revision?: number; status?: string; created_at?: string; controlled?: boolean; owner_deployment?: string; }

interface DeploymentViewProps {
  clusterCode: string;
  namespace: string;
  deployment: any;
  pods: PodItem[];
  replicaSets: ReplicaSetItem[];
  revisions: any[];
  onRefresh: () => void;
  onShowPodLogs: (pod: PodItem) => void;
  onShowPodTerminal: (pod: PodItem) => void;
  onShowPodYaml: (pod: PodItem) => void;
}

/** 计算 Pod 从调度到就绪的各阶段耗时（基于条件时间线，兼容扁平字段） */
function getPodTimeline(pod: PodItem) {
  const cond: any[] = (pod as any).conditions || (pod as any).pod_conditions || [];
  const find = (t: string) => cond.find((c: any) => (c.type || c.Type) === t);
  const scheduled = find('PodScheduled') || {};
  const initialized = find('Initialized') || {};
  const ready = find('Ready') || {};
  const containersReady = find('ContainersReady') || {};
  const ts = (c: any) => c?.lastTransitionTime || c?.LastTransitionTime || c?.last_transition_time;
  return {
    scheduled: ts(scheduled),
    initialized: ts(initialized),
    containersReady: ts(containersReady),
    ready: ts(ready),
    startTime: pod.start_time || (pod as any).startTime,
  };
}

function StatCard({ label, value, sub, color }: { label: string; value: React.ReactNode; sub?: string; color?: string }) {
  return (
    <Card className="bg-slate-900 border-slate-800">
      <CardContent className="p-3">
        <p className="text-xs text-slate-500">{label}</p>
        <p className="text-base font-bold mt-0.5" style={{ color: color || '#e2e8f0' }}>{value}</p>
        {sub && <p className="text-[10px] text-slate-600 mt-0.5">{sub}</p>}
      </CardContent>
    </Card>
  );
}

export function DeploymentView({
  clusterCode, namespace, deployment, pods, replicaSets, revisions,
  onRefresh, onShowPodLogs, onShowPodTerminal, onShowPodYaml,
}: DeploymentViewProps) {
  const navigate = useNavigate();
  const { toast } = useToast();
  const [expandedPod, setExpandedPod] = useState<string | null>(null);
  const [rollbackLoading, setRollbackLoading] = useState<number | null>(null);

  const ready = deployment.ready_replicas || deployment.readyReplicas || 0;
  const total = deployment.replicas || 0;
  const available = deployment.available_replicas || deployment.availableReplicas || 0;
  const updated = deployment.updated_replicas || deployment.updatedReplicas || 0;
  const isHealthy = ready === total && total > 0;

  const createdAt = deployment.created_at || deployment.creationTimestamp || deployment.created_at;
  const updatedAt = deployment.updated_at || deployment.last_updated;

  const handleRollback = async (rev: any) => {
    const revision = rev.revision ?? rev.revision_number ?? rev.number;
    if (!confirm(`确认回滚到修订版本 #${revision}？\n镜像: ${rev.image || '-'}`)) return;
    setRollbackLoading(revision);
    try {
      await kubernetesApi.rollbackDeployment(clusterCode, namespace, deployment.name, Number(revision));
      toast({ title: '回滚指令已下发', description: `正在回滚到 revision #${revision}` });
      onRefresh();
    } catch (e: any) {
      toast({ title: '回滚失败', description: e?.message || String(e), variant: 'destructive' });
    } finally { setRollbackLoading(null); }
  };

  const nodeClick = (nodeName: string | undefined) => {
    if (!nodeName) return;
    navigate(`/kubernetes/${clusterCode}`);
  };

  return (
    <div className="space-y-4">
      {/* ============ 1. 状态总览 ============ */}
      <div className="grid grid-cols-2 md:grid-cols-4 lg:grid-cols-6 gap-3">
        <StatCard label="副本就绪" value={`${ready}/${total}`} color={isHealthy ? STATUS_COLORS.green : STATUS_COLORS.orange} sub={isHealthy ? '全部就绪' : '部分未就绪'} />
        <StatCard label="可用副本" value={available} color={STATUS_COLORS.blue} />
        <StatCard label="已更新副本" value={updated} color={STATUS_COLORS.green} />
        <StatCard label="策略" value={deployment.strategy || 'RollingUpdate'} color="#94a3b8" />
        <StatCard label="创建时间" value={<span className="text-xs">{formatK8sTime(createdAt)}</span>} color="#94a3b8" />
        <StatCard label="更新时间" value={<span className="text-xs">{formatK8sTime(updatedAt)}</span>} color="#94a3b8" />
      </div>

      {/* ============ 2. 容器详情（CPU/内存/镜像/端口） ============ */}
      <Card className="bg-slate-900 border-slate-800">
        <CardHeader className="pb-3">
          <CardTitle className="text-sm text-slate-200 flex items-center gap-2"><Container className="h-4 w-4 text-blue-400" />容器模板（Pod Template）</CardTitle>
        </CardHeader>
        <CardContent className="pt-0">
          <ContainersTable deployment={deployment} />
        </CardContent>
      </Card>

      {/* ============ 3. Pod 状态时间线 + 详情列表 ============ */}
      <Card className="bg-slate-900 border-slate-800">
        <CardHeader className="pb-3">
          <CardTitle className="text-sm text-slate-200 flex items-center gap-2">
            <Activity className="h-4 w-4 text-emerald-400" />Pod 实例 ({pods.length})
          </CardTitle>
        </CardHeader>
        <CardContent className="p-0">
          <Table>
            <TableHeader>
              <TableRow className="border-slate-800 hover:bg-transparent">
                <TableHead className="text-slate-400 w-8"></TableHead>
                <TableHead className="text-slate-400">Pod 名称</TableHead>
                <TableHead className="text-slate-400">状态</TableHead>
                <TableHead className="text-slate-400">所在节点</TableHead>
                <TableHead className="text-slate-400">Pod IP</TableHead>
                <TableHead className="text-slate-400">重启</TableHead>
                <TableHead className="text-slate-400">调度→就绪</TableHead>
                <TableHead className="text-slate-400">启动时间</TableHead>
                <TableHead className="text-slate-400">操作</TableHead>
              </TableRow>
            </TableHeader>
            <TableBody>
              {pods.length === 0 ? (
                <TableRow><TableCell colSpan={9} className="text-center text-slate-500 py-8">暂无 Pod</TableCell></TableRow>
              ) : pods.map((pod) => {
                const tl = getPodTimeline(pod);
                const schedToReady = elapsedSeconds(tl.scheduled, tl.ready);
                const expanded = expandedPod === pod.name;
                const nodeName = pod.node_name || pod.node;
                return (
                  <Fragment key={pod.name}>
                    <TableRow className="border-slate-800 hover:bg-slate-800/30">
                      <TableCell>
                        <Button variant="ghost" size="icon" className="h-6 w-6 text-slate-500" onClick={() => setExpandedPod(expanded ? null : pod.name)}>
                          {expanded ? <ChevronDown className="h-3.5 w-3.5" /> : <ChevronRight className="h-3.5 w-3.5" />}
                        </Button>
                      </TableCell>
                      <TableCell className="font-medium text-slate-200">{pod.name}</TableCell>
                      <TableCell>
                        <Badge style={{ background: `${statusColor(pod.status)}22`, color: statusColor(pod.status), border: `1px solid ${statusColor(pod.status)}44` }}>
                          {pod.status || 'Unknown'}
                        </Badge>
                      </TableCell>
                      <TableCell>
                        <button className="text-sm text-blue-400 hover:underline inline-flex items-center gap-1" onClick={() => nodeClick(nodeName)} title="跳转节点详情">
                          <Server className="h-3 w-3" />{nodeName || '-'}
                        </button>
                      </TableCell>
                      <TableCell className="text-sm text-slate-400 font-mono">{pod.ip || pod.pod_ip || '-'}</TableCell>
                      <TableCell className={(pod.restart_count || 0) > 0 ? 'text-yellow-400' : 'text-slate-500'}>{pod.restart_count || 0}</TableCell>
                      <TableCell className="text-xs text-slate-400">{formatDuration(schedToReady)}</TableCell>
                      <TableCell className="text-xs text-slate-500">{formatK8sTime(tl.startTime || pod.created_at)}</TableCell>
                      <TableCell>
                        <div className="flex items-center gap-0.5">
                          <Button variant="ghost" size="icon" className="h-7 w-7 text-slate-400 hover:text-blue-400" title="日志" onClick={() => onShowPodLogs(pod)}><FileCode className="h-3.5 w-3.5" /></Button>
                          <Button variant="ghost" size="icon" className="h-7 w-7 text-slate-400 hover:text-emerald-400" title="终端" onClick={() => onShowPodTerminal(pod)}><Container className="h-3.5 w-3.5" /></Button>
                          <Button variant="ghost" size="icon" className="h-7 w-7 text-slate-400 hover:text-amber-400" title="YAML" onClick={() => onShowPodYaml(pod)}><FileCode className="h-3.5 w-3.5" /></Button>
                        </div>
                      </TableCell>
                    </TableRow>
                    {expanded && (
                      <TableRow className="border-slate-800 bg-slate-950/40">
                        <TableCell colSpan={9} className="p-4">
                          <PodTimeline pod={pod} />
                        </TableCell>
                      </TableRow>
                    )}
                  </Fragment>
                );
              })}
            </TableBody>
          </Table>
        </CardContent>
      </Card>

      {/* ============ 4. 历史版本（可回滚） ============ */}
      <Card className="bg-slate-900 border-slate-800">
        <CardHeader className="pb-3">
          <CardTitle className="text-sm text-slate-200 flex items-center gap-2"><History className="h-4 w-4 text-purple-400" />历史版本（Revision / Rollout）</CardTitle>
        </CardHeader>
        <CardContent className="p-0">
          <Table>
            <TableHeader>
              <TableRow className="border-slate-800 hover:bg-transparent">
                <TableHead className="text-slate-400">Revision</TableHead>
                <TableHead className="text-slate-400">镜像</TableHead>
                <TableHead className="text-slate-400">状态</TableHead>
                <TableHead className="text-slate-400">更新时间</TableHead>
                <TableHead className="text-slate-400">操作</TableHead>
              </TableRow>
            </TableHeader>
            <TableBody>
              {revisions.length === 0 ? (
                <TableRow><TableCell colSpan={5} className="text-center text-slate-500 py-6 text-xs">后端 /revisions 接口尚未就绪，等待后端联调</TableCell></TableRow>
              ) : revisions.map((rev, idx) => {
                const revision = rev.revision ?? rev.revision_number ?? rev.number ?? idx + 1;
                const isLatest = idx === 0;
                return (
                  <TableRow key={revision} className="border-slate-800 hover:bg-slate-800/30">
                    <TableCell className="font-mono text-slate-200">#{revision}</TableCell>
                    <TableCell className="text-xs font-mono text-slate-400 max-w-[280px] truncate">{rev.image || rev.images?.[0] || '-'}</TableCell>
                    <TableCell>
                      {isLatest
                        ? <Badge className="bg-emerald-500/20 text-emerald-400 border-emerald-500/30">当前</Badge>
                        : <Badge className="bg-slate-700/40 text-slate-400 border-slate-600">历史</Badge>}
                    </TableCell>
                    <TableCell className="text-xs text-slate-500">{formatK8sTime(rev.created_at || rev.time)}</TableCell>
                    <TableCell>
                      <Button variant="ghost" size="sm" className="h-7 text-amber-400 hover:text-amber-300 disabled:opacity-40"
                        disabled={isLatest || rollbackLoading !== null}
                        onClick={() => handleRollback(rev)}>
                        {rollbackLoading === revision ? '回滚中...' : <><RotateCcw className="h-3 w-3 mr-1" />回滚</>}
                      </Button>
                    </TableCell>
                  </TableRow>
                );
              })}
            </TableBody>
          </Table>
        </CardContent>
      </Card>

      {/* ============ 5. ReplicaSet 列表 ============ */}
      <Card className="bg-slate-900 border-slate-800">
        <CardHeader className="pb-3">
          <CardTitle className="text-sm text-slate-200 flex items-center gap-2"><Container className="h-4 w-4 text-cyan-400" />ReplicaSet 列表 ({replicaSets.length})</CardTitle>
        </CardHeader>
        <CardContent className="p-0">
          <Table>
            <TableHeader>
              <TableRow className="border-slate-800 hover:bg-transparent">
                <TableHead className="text-slate-400">名称</TableHead>
                <TableHead className="text-slate-400">副本</TableHead>
                <TableHead className="text-slate-400">镜像</TableHead>
                <TableHead className="text-slate-400">Revision</TableHead>
                <TableHead className="text-slate-400">状态</TableHead>
                <TableHead className="text-slate-400">创建时间</TableHead>
              </TableRow>
            </TableHeader>
            <TableBody>
              {replicaSets.length === 0 ? (
                <TableRow><TableCell colSpan={6} className="text-center text-slate-500 py-6 text-xs">后端 /replicasets 接口尚未就绪，等待后端联调</TableCell></TableRow>
              ) : replicaSets.map((rs) => {
                const r: any = rs;
                const rsReady = r.ready_replicas ?? r.readyReplicas ?? 0;
                const rsTotal = r.replicas ?? 0;
                const ok = rsReady === rsTotal && rsTotal > 0;
                return (
                  <TableRow key={r.name} className="border-slate-800 hover:bg-slate-800/30">
                    <TableCell className="font-medium text-slate-200">
                      {r.name}
                      {r.controlled && <Badge variant="outline" className="ml-2 border-emerald-700 text-emerald-400 text-[10px]">当前</Badge>}
                    </TableCell>
                    <TableCell className="text-slate-300">{rsReady}/{rsTotal}</TableCell>
                    <TableCell className="text-xs font-mono text-slate-400 max-w-[240px] truncate">{r.image || '-'}</TableCell>
                    <TableCell className="text-xs text-slate-400 font-mono">#{r.revision || '-'}</TableCell>
                    <TableCell>
                      <Badge style={{ background: `${ok ? STATUS_COLORS.green : STATUS_COLORS.orange}22`, color: ok ? STATUS_COLORS.green : STATUS_COLORS.orange, border: `1px solid ${ok ? STATUS_COLORS.green : STATUS_COLORS.orange}44` }}>
                        {r.status || (ok ? 'Ready' : 'Updating')}
                      </Badge>
                    </TableCell>
                    <TableCell className="text-xs text-slate-500">{formatK8sTime(r.created_at)}</TableCell>
                  </TableRow>
                );
              })}
            </TableBody>
          </Table>
        </CardContent>
      </Card>
    </div>
  );
}

// ============ 容器模板表（镜像/端口/资源/探针） ============
function ContainersTable({ deployment }: { deployment: any }) {
  const containers: any[] = deployment.containers || deployment.container_specs || deployment.spec_containers || [];
  if (containers.length === 0) {
    return <p className="text-xs text-slate-500 py-3">无容器详情数据（扁平字段缺少 containers，可查看 YAML）</p>;
  }
  return (
    <div className="space-y-3">
      {containers.map((c, idx) => {
        const cpuReq = c.resources?.requests?.cpu || c.cpu_request;
        const cpuLim = c.resources?.limits?.cpu || c.cpu_limit;
        const memReq = c.resources?.requests?.memory || c.memory_request;
        const memLim = c.resources?.limits?.memory || c.memory_limit;
        const ports: any[] = c.ports || c.container_ports || [];
        return (
          <div key={idx} className="border border-slate-800 rounded-lg p-3 bg-slate-950/30">
            <div className="flex items-center justify-between mb-2">
              <div className="flex items-center gap-2">
                <Container className="h-4 w-4 text-blue-400" />
                <span className="text-sm font-semibold text-slate-200">{c.name || `container-${idx}`}</span>
              </div>
              <code className="text-[11px] text-slate-400 font-mono truncate max-w-[400px]">{c.image}</code>
            </div>
            <div className="grid grid-cols-2 md:grid-cols-4 gap-2 text-xs">
              <div className="flex items-center gap-1.5 text-slate-400">
                <Cpu className="h-3.5 w-3.5 text-amber-400" />
                <span>CPU: <span className="text-slate-200 font-mono">{cpuReq || '-'}/{cpuLim || '-'}</span></span>
              </div>
              <div className="flex items-center gap-1.5 text-slate-400">
                <MemoryStick className="h-3.5 w-3.5 text-purple-400" />
                <span>内存: <span className="text-slate-200 font-mono">{memReq || '-'}/{memLim || '-'}</span></span>
              </div>
              <div className="flex items-center gap-1.5 text-slate-400">
                <Network className="h-3.5 w-3.5 text-cyan-400" />
                <span>端口: <span className="text-slate-200 font-mono">{ports.map((p: any) => typeof p === 'object' ? (p.containerPort || p.port) : p).join(', ') || '-'}</span></span>
              </div>
              <div className="flex items-center gap-1.5 text-slate-400">
                <HardDrive className="h-3.5 w-3.5 text-emerald-400" />
                <span>挂载: <span className="text-slate-200 font-mono">{(c.volume_mounts || c.volumeMounts || []).length || 0}</span></span>
              </div>
            </div>
            {/* 探针 */}
            <div className="mt-2 flex flex-wrap gap-3 text-[11px] text-slate-500">
              {c.liveness_probe || c.livenessProbe ? (
                <span className="text-emerald-500">● 存活探针</span>
              ) : <span className="text-slate-700">○ 无存活探针</span>}
              {c.readiness_probe || c.readinessProbe ? (
                <span className="text-blue-500">● 就绪探针</span>
              ) : <span className="text-slate-700">○ 无就绪探针</span>}
              {c.startup_probe || c.startupProbe ? (
                <span className="text-purple-500">● 启动探针</span>
              ) : null}
            </div>
          </div>
        );
      })}
    </div>
  );
}

// ============ Pod 状态时间线（调度→初始化→容器就绪→就绪） ============
function PodTimeline({ pod }: { pod: PodItem }) {
  const tl = getPodTimeline(pod);
  const stages = [
    { label: '调度', ts: tl.scheduled, color: STATUS_COLORS.blue },
    { label: '初始化', ts: tl.initialized, color: STATUS_COLORS.orange },
    { label: '容器就绪', ts: tl.containersReady, color: STATUS_COLORS.green },
    { label: 'Pod 就绪', ts: tl.ready, color: STATUS_COLORS.green },
  ];
  return (
    <div>
      <p className="text-xs text-slate-400 mb-2 flex items-center gap-1"><Clock className="h-3 w-3" />状态时间线</p>
      <div className="flex items-center gap-1 overflow-x-auto pb-1">
        {stages.map((s, i) => {
          const prev = stages[i - 1];
          const dur = elapsedSeconds(prev?.ts, s.ts);
          return (
            <div key={s.label} className="flex items-center">
              <div className="flex flex-col items-center min-w-[80px]">
                <div className="h-2.5 w-2.5 rounded-full" style={{ background: s.ts ? s.color : '#334155' }} />
                <span className="text-[10px] mt-1 font-medium" style={{ color: s.ts ? s.color : '#475569' }}>{s.label}</span>
                <span className="text-[9px] text-slate-600">{s.ts ? formatK8sTime(s.ts) : '-'}</span>
              </div>
              {i < stages.length - 1 && (
                <div className="flex flex-col items-center mx-1 min-w-[40px]">
                  <div className="h-0.5 w-10" style={{ background: '#334155' }} />
                  <span className="text-[9px] text-slate-600 mt-0.5">{dur != null ? formatDuration(dur) : ''}</span>
                </div>
              )}
            </div>
          );
        })}
      </div>
    </div>
  );
}