/* eslint-disable @typescript-eslint/no-explicit-any */
import { useState, useEffect, useCallback, useMemo } from 'react';
import { useParams, useNavigate, useLocation } from 'react-router-dom';
import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import {
  Select, SelectContent, SelectItem, SelectTrigger, SelectValue,
} from '@/components/ui/select';
import {
  Table, TableBody, TableCell, TableHead, TableHeader, TableRow,
} from '@/components/ui/table';
import { RefreshCw, Search, Loader2, Download, Upload, Plus } from 'lucide-react';
import { YamlViewer } from './YamlViewer';
import { ResourceVisualEditor } from './ResourceVisualEditor';
import { YamlImportDialog } from './YamlImportDialog';
import { PodExecTerminal } from './PodExecTerminal';
import { PodFileBrowser } from './PodFileBrowser';
import { PodDetailDialog } from './PodDetailDialog';
import {
  RESOURCE_CONFIG, VISUAL_RESOURCE_TYPES, DEPLOYMENT_LIST_TYPES,
  EXPORT_YAML_TYPES, BULK_EXPORT_TYPES,
  type ResourceType,
} from './namespace-resource-config';
import { kubernetesApi } from '@/api';
import { useToast } from '@/hooks/use-toast';
import { useConfirm } from '@/components/ui/confirm-dialog';
import { PageShell } from '@/components/layout/PageShell';
import { ContentPanel } from '@/components/layout/ContentPanel';
import i18n from '@/i18n';

export default function NamespaceResourcePage() {
  const { clusterCode, namespace } = useParams<{ clusterCode: string; namespace: string }>();
  const location = useLocation();
  const navigate = useNavigate();
  const { toast } = useToast();
  const confirm = useConfirm();
  const type = useMemo<ResourceType>(() => {
    const segments = location.pathname.split('/');
    const last = segments[segments.length - 1];
    if (last && RESOURCE_CONFIG[last as ResourceType]) return last as ResourceType;
    if (segments.length >= 2) {
      const secondLast = segments[segments.length - 2];
      if (secondLast && RESOURCE_CONFIG[secondLast as ResourceType]) return secondLast as ResourceType;
    }
    return 'deployments';
  }, [location.pathname]);
  const config = RESOURCE_CONFIG[type];

  const [clusters, setClusters] = useState<any[]>([]);
  const [namespaces, setNamespaces] = useState<string[]>([]);
  const [data, setData] = useState<any[]>([]);
  const [loading, setLoading] = useState(false);
  const [search, setSearch] = useState('');
  const [yamlItem, setYamlItem] = useState<{resource: string; name: string; editMode?: boolean} | null>(null);
  const [visualItem, setVisualItem] = useState<{ resource: string; name: string; isCreate?: boolean } | null>(null);
  const [showYamlImport, setShowYamlImport] = useState(false);

  const [terminalPod, setTerminalPod] = useState<any>(null);
  const [fileBrowserPod, setFileBrowserPod] = useState<any>(null);
  const [podDetail, setPodDetail] = useState<any>(null);

  useEffect(() => {
    kubernetesApi.getClusters().then((res: any) => {
      const list = res?.list || [];
      setClusters(list);
      if (!clusterCode && list.length > 0) {
        const firstCode = list[0].code || String(list[0].id);
        navigate(`/kubernetes/${firstCode}/namespace/${namespace || 'default'}/${type}`, { replace: true });
      }
    }).catch(() => setClusters([]));
  // eslint-disable-next-line react-hooks/exhaustive-deps
  }, []);

  useEffect(() => {
    if (!clusterCode) return;
    kubernetesApi.getNamespaces(clusterCode).then((res: any) => {
      const nsList: string[] = Array.isArray(res) ? res : (res?.list || res?.data || []);
      setNamespaces(nsList);
      if (!namespace && nsList.length > 0) {
        navigate(`/kubernetes/${clusterCode}/namespace/${nsList[0]}/${type}`, { replace: true });
      }
    }).catch(() => setNamespaces([]));
  // eslint-disable-next-line react-hooks/exhaustive-deps
  }, [clusterCode]);

  const loadData = useCallback(async () => {
    if (!clusterCode || !namespace) return;
    setLoading(true);
    try {
      let res: Record<string, any> = [];
      switch (type) {
        case 'deployments': res = await kubernetesApi.getNamespaceDeployments(clusterCode, namespace).catch(() => []); break;
        case 'pods': res = await kubernetesApi.getNamespacePods(clusterCode, namespace).catch(() => []); break;
        case 'services': res = await kubernetesApi.getNamespaceServices(clusterCode, namespace).catch(() => []); break;
        case 'ingresses': res = await kubernetesApi.getNamespaceIngresses(clusterCode, namespace).catch(() => []); break;
        case 'configmaps': res = await kubernetesApi.getNamespaceConfigMaps(clusterCode, namespace).catch(() => []); break;
        case 'secrets': res = await kubernetesApi.getNamespaceSecrets(clusterCode, namespace).catch(() => []); break;
        case 'hpas': res = await kubernetesApi.getHPAs(clusterCode, namespace).catch(() => []); break;
        case 'cronjobs': res = await kubernetesApi.getCronJobs(clusterCode, namespace).catch(() => []); break;
        case 'pvcs': res = await kubernetesApi.getPVCs(clusterCode, namespace).catch(() => []); break;
        case 'statefulsets': res = await kubernetesApi.getStatefulSets(clusterCode, namespace).catch(() => []); break;
        case 'daemonsets': res = await kubernetesApi.getDaemonSets(clusterCode, namespace).catch(() => []); break;
        case 'serviceaccounts': res = await kubernetesApi.getServiceAccounts(clusterCode, namespace).catch(() => []); break;
        case 'roles': res = await kubernetesApi.getRoles(clusterCode, namespace).catch(() => []); break;
        case 'rolebindings': res = await kubernetesApi.getRoleBindings(clusterCode, namespace).catch(() => []); break;
      }
      setData(Array.isArray(res) ? res : (res?.list || res?.data || []));
    } catch { setData([]); } finally { setLoading(false); }
  }, [clusterCode, namespace, type]);

  useEffect(() => { loadData(); }, [loadData]);

  const filtered = data.filter((d: any) => (d.name || '').toLowerCase().includes(search.toLowerCase()));

  const handleDetail = (item: any) => {
    if (type === 'deployments') {
      navigate(`/kubernetes/${clusterCode}/namespace/${namespace}/workload/view/Deployment/${item.name}`);
    } else if (type === 'statefulsets') {
      navigate(`/kubernetes/${clusterCode}/namespace/${namespace}/workload/view/StatefulSet/${item.name}`);
    } else if (type === 'daemonsets') {
      navigate(`/kubernetes/${clusterCode}/namespace/${namespace}/workload/view/DaemonSet/${item.name}`);
    }
  };

  const handleYaml = (name: string) => setYamlItem({ resource: type, name });
  // 网络/配置/存储走可视化编辑器，YAML 作为高级入口 // Logan.Li
  const handleEdit = (name: string) => {
    if (VISUAL_RESOURCE_TYPES.includes(type)) {
      setVisualItem({ resource: type, name });
    } else {
      setYamlItem({ resource: type, name, editMode: true });
    }
  };
  const handleCreate = () => {
    if (type === 'deployments') {
      navigate(`/kubernetes/${clusterCode}/namespace/${namespace}/workload/edit/Deployment/_create`);
      return;
    }
    setVisualItem({ resource: type, name: '', isCreate: true });
  };
  const handleExportCSV = () => kubernetesApi.exportAsCSV(`${type}-${clusterCode}-${namespace}.csv`, filtered);
  const handleExportJSON = () => kubernetesApi.exportAsJSON(`${type}-${clusterCode}-${namespace}.json`, filtered);
  const handleExportYaml = async () => {
    if (!clusterCode || !namespace) return;
    try {
      await kubernetesApi.exportNamespaceResources(clusterCode, namespace);
      toast({ title: i18n.t('common.exportComplete'), description: i18n.t('k8s.toast.yamlDownloadStarted', { namespace }) });
    } catch (e) {
      toast({ title: i18n.t('kubernetes.msg.exportFailed'), description: (e as Error)?.message || String(e), variant: 'destructive' });
    }
  };

  // Pod 删除 // Logan.Li
  const handleDeletePod = async (p: any) => {
    const ok = await confirm({
      title: i18n.t('kubernetes.pod.deletePod'),
      description: i18n.t('k8s.namespaceResource.delete1') + (p.name || '') + i18n.t('k8s.namespaceResource.actions'),
      confirmText: i18n.t('kubernetes.storage.delete2'),
    });
    if (!ok) return;
    try {
      await kubernetesApi.deletePod(clusterCode || '', namespace || '', p.name);
      toast({ title: i18n.t('kubernetes.msg.podDeleted') });
      loadData();
    } catch (e) {
      toast({ title: i18n.t('kubernetes.msg.deleteFailed2'), description: (e as any)?.message || String(e), variant: 'destructive' });
    }
  };

  if (!config) return <div className="text-[var(--dg-text-secondary)] p-8 text-center">未知资源类型: {type}</div>;

  const searchToolbar = (
    <div className="relative w-56 flex-1 min-w-[200px] max-w-xs">
      <Search className="absolute left-3 top-1/2 -translate-y-1/2 h-4 w-4 dg-text-muted" />
      <Input placeholder={i18n.t('kubernetes.namespaceResource.searchPlaceholder')} value={search} onChange={(e) => setSearch(e.target.value)} className="pl-9 h-9 dg-input" />
    </div>
  );

  const ResourceIcon = config.icon;
  const subtitleParts = [clusterCode, namespace].filter(Boolean);
  const pageSubtitle = subtitleParts.length > 0
    ? `${subtitleParts.join(' / ')} · ${config.subtitle}`
    : config.subtitle;

  return (
    <PageShell
      variant="list"
      title={config.title}
      subtitle={pageSubtitle}
      icon={<ResourceIcon className="h-5 w-5" />}
      actions={(
        <>
          <Select value={clusterCode || ''} onValueChange={(v) => navigate(`/kubernetes/${v}/namespace/${namespace || 'default'}/${type}`)}>
            <SelectTrigger className="w-48 h-9 dg-input"><SelectValue placeholder={i18n.t('kubernetes.topology.selectCluster')} /></SelectTrigger>
            <SelectContent>{clusters.map((c) => <SelectItem key={c.id} value={c.code || String(c.id)}>{c.name}</SelectItem>)}</SelectContent>
          </Select>
          <Select value={namespace || ''} onValueChange={(v) => navigate(`/kubernetes/${clusterCode}/namespace/${v}/${type}`)}>
            <SelectTrigger className="w-40 h-9 dg-input"><SelectValue placeholder={i18n.t('kubernetes.namespace.title')} /></SelectTrigger>
            <SelectContent className="max-h-[300px]">{namespaces.map((ns) => <SelectItem key={ns} value={ns}>{ns}</SelectItem>)}</SelectContent>
          </Select>
          <Button variant="outline" size="sm" className="dg-btn-secondary" onClick={loadData} disabled={loading}>
            <RefreshCw className={`h-4 w-4 mr-1 ${loading ? 'animate-spin' : ''}`} />
            刷新
          </Button>
          {BULK_EXPORT_TYPES.includes(type) && (
            <>
              <Button variant="outline" size="sm" className="dg-btn-secondary text-xs" onClick={handleExportCSV} title={i18n.t('k8s.nsResourcePage.exportCsv')}>
                <Download className="h-3 w-3 mr-1" />CSV
              </Button>
              <Button variant="outline" size="sm" className="dg-btn-secondary text-xs" onClick={handleExportJSON} title={i18n.t('k8s.nsResourcePage.exportJson')}>
                <Download className="h-3 w-3 mr-1" />JSON
              </Button>
            </>
          )}
          {EXPORT_YAML_TYPES.includes(type) && (
            <Button variant="outline" size="sm" className="dg-btn-secondary text-xs" onClick={handleExportYaml} title={i18n.t('k8s.nsResourcePage.exportYaml')}>
              <Download className="h-3 w-3 mr-1" />导出YAML
            </Button>
          )}
          {(VISUAL_RESOURCE_TYPES.includes(type) || DEPLOYMENT_LIST_TYPES.includes(type)) && (
            <>
              <Button variant="outline" size="sm" className="dg-btn-secondary text-xs" onClick={() => setShowYamlImport(true)}>
                <Upload className="h-3 w-3 mr-1" />导入
              </Button>
              <Button size="sm" className="dg-btn-primary text-xs" onClick={handleCreate}>
                <Plus className="h-3 w-3 mr-1" />新建
              </Button>
            </>
          )}
        </>
      )}
    >
      {yamlItem && (
        <YamlViewer
          clusterCode={clusterCode || ''}
          namespace={namespace || ''}
          resource={yamlItem.resource}
          name={yamlItem.name}
          onClose={() => setYamlItem(null)}
          onSaved={loadData}
          autoEdit={yamlItem.editMode === true}
        />
      )}
      {showYamlImport && (
        <YamlImportDialog
          clusterCode={clusterCode || ''}
          onClose={() => setShowYamlImport(false)}
          onApplied={loadData}
        />
      )}
      {visualItem && (
        <ResourceVisualEditor
          clusterCode={clusterCode || ''}
          namespace={namespace || ''}
          resource={visualItem.resource}
          name={visualItem.name}
          isCreate={visualItem.isCreate}
          onClose={() => setVisualItem(null)}
          onSaved={loadData}
        />
      )}

      <ContentPanel toolbar={searchToolbar}>
          <Table>
            <TableHeader><TableRow className="border-[var(--dg-border)] hover:bg-transparent">{config.columns.map((col) => <TableHead key={col} className="text-[var(--dg-text-secondary)]">{col}</TableHead>)}</TableRow></TableHeader>
            <TableBody>
              {loading ? (
                <TableRow><TableCell colSpan={config.columns.length} className="text-center text-[var(--dg-text-muted)] py-12"><Loader2 className="h-5 w-5 animate-spin mx-auto mb-2" /> {i18n.t('monitor.logPanel.logResults.loading')} </TableCell></TableRow>
              ) : filtered.length === 0 ? (
                <TableRow><TableCell colSpan={config.columns.length} className="text-center text-[var(--dg-text-muted)] py-12"><config.icon className="h-8 w-8 mx-auto mb-2 opacity-50" />暂无 {config.title}</TableCell></TableRow>
              ) : (
                filtered.map((item) => config.renderRow(item, { clusterCode: clusterCode || '', namespace: namespace || '', onDetail: handleDetail, onYaml: handleYaml, onEdit: handleEdit, onTerminal: (p: any) => setTerminalPod(p), onFileBrowser: (p: any) => setFileBrowserPod(p), onDeletePod: handleDeletePod, onPodDetail: (p: any) => setPodDetail(p) }))
              )}
            </TableBody>
          </Table>
      </ContentPanel>

      {/* ============ Pod 终端 ============ */}
      <PodExecTerminal
        open={!!terminalPod}
        onOpenChange={(open) => { if (!open) setTerminalPod(null); }}
        clusterId={clusters[0]?.id || clusters[0]?.code || clusterCode || ''}
        namespace={namespace || ''}
        podName={terminalPod?.name || ''}
        containers={(terminalPod?.containers || []).map((c: any) => c.name).filter(Boolean)}
      />
      {/* ============ Pod 文件浏览器 ============ */}
      <PodFileBrowser
        open={!!fileBrowserPod}
        onOpenChange={(open) => { if (!open) setFileBrowserPod(null); }}
        clusterCode={clusterCode || ''}
        namespace={namespace || ''}
        podName={fileBrowserPod?.name || ''}
        containers={(fileBrowserPod?.containers || []).map((c: any) => c.name).filter(Boolean)}
      />
      {/* ============ Pod 详情弹窗 ============ */}
      <PodDetailDialog pod={podDetail} onClose={() => setPodDetail(null)} />
    </PageShell>
  );
}