import { useState, useEffect } from 'react';
import { useTranslation } from 'react-i18next';
import { Plus, Pencil, Trash2, RefreshCw, GitBranch, Container, Globe, Settings2 } from 'lucide-react';
import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import { Badge } from '@/components/ui/badge';
import { PageShell } from '@/components/layout/PageShell';
import { ContentPanel } from '@/components/layout/ContentPanel';
import { PageEmpty } from '@/components/layout/PageEmpty';

import { useSearchParams } from 'react-router-dom';
import BuildNodesManager from './BuildNodesManager';
import { Label } from '@/components/ui/label';
import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/select';
import { Dialog, DialogContent, DialogHeader, DialogTitle } from '@/components/ui/dialog';
import { toast } from 'sonner';
import { useConfirm } from '@/components/ui/confirm-dialog';
import { deployApi } from '@/api';
import CredentialFormDialog from './CredentialFormDialog';
import ToolConfigTab from './ToolConfigTab';
import type { JsonData } from '@/types/common';

interface Repo {
  id: number; name: string; description: string; url: string;
  auth_type: string; credential_id: number | null; enabled: boolean;
  created_by: string; updated_at: string;
}
interface Registry {
  id: number; name: string; description: string; registry_url: string; namespace: string;
  auth_type: string; credential_id: number | null; enabled: boolean;
  created_by: string; updated_at: string;
}
interface Environment {
  id: number; name: string; display_name: string; type: string; color: string;
  sort_order: number; description: string; enabled: boolean;
}

function EnvFormDialog({ open, onClose, onSaved, editData }: { open: boolean; onClose: () => void; onSaved: () => void; editData: Environment | null }) {
  const { t } = useTranslation();
  const [name, setName] = useState('');
  const [displayName, setDisplayName] = useState('');
  const [envType, setEnvType] = useState('development');
  const [color, setColor] = useState('#3B82F6');
  const [description, setDescription] = useState('');
  const [sortOrder, setSortOrder] = useState(50);
  const [submitting, setSubmitting] = useState(false);

  useEffect(() => {
    if (editData) {
      setName(editData.name);
      setDisplayName(editData.display_name);
      setEnvType(editData.type);
      setColor(editData.color);
      setDescription(editData.description || '');
      setSortOrder(editData.sort_order);
    } else {
      setName(''); setDisplayName(''); setEnvType('development'); setColor('#3B82F6'); setDescription(''); setSortOrder(50);
    }
  }, [editData, open]);

  const handleSubmit = async () => {
    if (!name.trim() || !displayName.trim()) { toast.error(t('deploy.form.nameRequired')); return; }
    setSubmitting(true);
    try {
      if (editData) await deployApi.updateEnvironment(editData.id, { name, display_name: displayName, type: envType, color, sort_order: sortOrder, description });
      else await deployApi.createEnvironment({ name, display_name: displayName, type: envType, color, sort_order: sortOrder, description });
      toast.success(editData ? t('deploy.toast.updated') : t('deploy.toast.created'));
      onSaved();
      onClose();
    } catch { toast.error(t('deploy.toast.operationFailed')); }
    finally { setSubmitting(false); }
  };

  return (
    <Dialog open={open} onOpenChange={onClose}>
      <DialogContent>
        <DialogHeader><DialogTitle>{editData ? t('deploy.env.editEnv') : t('deploy.env.addEnv')}</DialogTitle></DialogHeader>
        <div className="space-y-3">
          <div className="space-y-1"><Label>{t('deploy.env.envLabel')}</Label><Input value={name} onChange={e => setName(e.target.value)} placeholder="production" /></div>
          <div className="space-y-1"><Label>{t('deploy.table.displayName')}</Label><Input value={displayName} onChange={e => setDisplayName(e.target.value)} placeholder={t('deploy.env.prodEnv')} /></div>
          <div className="space-y-1"><Label>{t('deploy.env.envType')}</Label>
            <Select value={envType} onValueChange={setEnvType}>
              <SelectTrigger><SelectValue /></SelectTrigger>
              <SelectContent>
                <SelectItem value="production">{t('deploy.env.prodEnv')}</SelectItem>
                <SelectItem value="staging">{t('deploy.env.staging')}</SelectItem>
                <SelectItem value="testing">{t('deploy.env.testEnv')}</SelectItem>
                <SelectItem value="development">{t('deploy.env.devEnv')}</SelectItem>
              </SelectContent>
            </Select>
          </div>
          <div className="space-y-1"><Label>{t('deploy.table.color')}</Label><Input value={color} onChange={e => setColor(e.target.value)} type="color" className="w-16 h-9 p-1" /></div>
          <div className="space-y-1"><Label>{t('deploy.table.sortOrder')}</Label><Input value={sortOrder} onChange={e => setSortOrder(Number(e.target.value))} type="number" /></div>
          <div className="space-y-1"><Label>{t('deploy.form.desc')}</Label><Input value={description} onChange={e => setDescription(e.target.value)} placeholder={t('common.optional')} /></div>
        </div>
        <div className="flex justify-end gap-2 mt-4">
          <Button variant="outline" onClick={onClose}>{t('common.cancel')}</Button>
          <Button onClick={handleSubmit} disabled={submitting}>{submitting ? '...' : editData ? t('common.save') : t('common.create')}</Button>
        </div>
      </DialogContent>
    </Dialog>
  );
}

const CONFIG_TABS = ['repos', 'registries', 'environments', 'tools', 'build-nodes'] as const;

export default function DeployCredentials() {
  const { t } = useTranslation();
  const _confirm = useConfirm();
  const [searchParams] = useSearchParams();
  const tabFromUrl = searchParams.get('tab');
  const [repos, setRepos] = useState<Repo[]>([]);
  const [registries, setRegistries] = useState<Registry[]>([]);
  const [environments, setEnvironments] = useState<Environment[]>([]);
  const [loading, setLoading] = useState(false);
  const [editorOpen, setEditorOpen] = useState(false);
  const [editType, setEditType] = useState<'repo' | 'registry'>('repo');
  const [editingId, setEditingId] = useState<number | null>(null);
  const [envDialogOpen, setEnvDialogOpen] = useState(false);
  const [editEnv, setEditEnv] = useState<Environment | null>(null);
  const [activeTab, setActiveTab] = useState(
    tabFromUrl && (CONFIG_TABS as readonly string[]).includes(tabFromUrl) ? tabFromUrl : 'repos',
  );

  const fetchAll = async () => {
    setLoading(true);
    try {
      const [rR, rReg, rEnv] = await Promise.all([deployApi.getRepos(), deployApi.getRegistries(), deployApi.getEnvironments()]);
      setRepos((rR as JsonData)?.list || []);
      setRegistries((rReg as JsonData)?.list || []);
      setEnvironments((rEnv as JsonData)?.list || []);
    } catch { toast.error(t('deploy.toast.getDataFailed')); }
    finally { setLoading(false); }
  };

  // eslint-disable-next-line react-hooks/exhaustive-deps
  useEffect(() => { fetchAll(); }, []);

  const handleDelete = async (type: 'repo' | 'registry' | 'env', item: JsonData) => {
    const ok = await _confirm({ title: t('common.delete'), description: t('deploy.toast.deleteConfirm', { name: item.name || item.display_name }), confirmText: t('common.delete'), variant: 'destructive' });
    if (!ok) return;
    try {
      if (type === 'repo') await deployApi.deleteRepo(item.id);
      else if (type === 'registry') await deployApi.deleteRegistry(item.id);
      else await deployApi.deleteEnvironment(item.id);
      toast.success(t('deploy.toast.deleted'));
      fetchAll();
    } catch { toast.error(t('deploy.toast.deleteFailed')); }
  };

  const envTypeLabel: Record<string, string> = { production: t('deploy.env.production'), staging: t('deploy.env.staging'), testing: t('deploy.env.testing'), development: t('deploy.env.development') };

  const pageTabs = [
    { id: 'repos', label: t('deploy.credForm.gitRepo'), badge: repos.length || undefined },
    { id: 'registries', label: t('deploy.credForm.imageRegistry'), badge: registries.length || undefined },
    { id: 'environments', label: t('deploy.label.envManage'), badge: environments.length || undefined },
    { id: 'build-nodes', label: t('deploy.deployNav.buildNodes') },
    { id: 'tools', label: t('deploy.tool.title') },
  ];

  return (
    <PageShell
      variant="list"
      title={t('deploy.label.releaseConfig')}
      subtitle={t('deploy.credForm.pageSubtitle')}
      icon={<Settings2 className="h-5 w-5" />}
      loading={loading}
      tabs={pageTabs}
      activeTab={activeTab}
      onTabChange={setActiveTab}
      actions={activeTab === 'build-nodes' ? undefined : (
        <>
          <Button variant="outline" size="sm" className="dg-btn-secondary" onClick={fetchAll}>
            <RefreshCw className="w-4 h-4 mr-1" />{t('common.refresh')}
          </Button>
          <Button size="sm" className="dg-btn-primary" onClick={() => { setEditType('repo'); setEditingId(null); setEditorOpen(true); }}>
            <Plus className="w-4 h-4 mr-1" />{t('deploy.credForm.newRepo')}
          </Button>
          <Button size="sm" variant="secondary" onClick={() => { setEditType('registry'); setEditingId(null); setEditorOpen(true); }}>
            <Plus className="w-4 h-4 mr-1" />{t('deploy.credForm.newRegistry')}
          </Button>
        </>
      )}
      contentClassName="space-y-4"
    >
      {activeTab === 'repos' && (
        repos.length === 0 ? (
          <PageEmpty icon={<GitBranch className="h-10 w-10" />} title={t('deploy.credForm.noRepo')} />
        ) : (
          <ContentPanel noPadding>
            <div className="overflow-hidden">
              <table className="w-full text-sm">
                <thead className="bg-[var(--dg-bg-tertiary)] border-b border-[var(--dg-border)]">
                  <tr>
                    <th className="px-3 py-2 text-left font-medium text-[var(--dg-text-secondary)]">{t('deploy.table.name')}</th>
                    <th className="px-3 py-2 text-left font-medium text-[var(--dg-text-secondary)] hidden md:table-cell">{t('deploy.table.repoUrl')}</th>
                    <th className="px-3 py-2 text-left font-medium text-[var(--dg-text-secondary)]">{t('deploy.cred.authMethod')}</th>
                    <th className="px-3 py-2 text-left font-medium text-[var(--dg-text-secondary)]">{t('deploy.table.status')}</th>
                    <th className="px-3 py-2 text-right font-medium text-[var(--dg-text-secondary)]">{t('common.actions')}</th>
                  </tr>
                </thead>
                <tbody>
                  {repos.map(r => (
                    <tr key={r.id} className="border-b border-[var(--dg-border)] hover:bg-[var(--dg-bg-tertiary)]/50">
                      <td className="px-3 py-2 font-medium text-[var(--dg-text-primary)]">{r.name}</td>
                      <td className="px-3 py-2 text-[var(--dg-text-secondary)] hidden md:table-cell font-mono text-xs max-w-[300px] truncate">{r.url}</td>
                      <td className="px-3 py-2"><Badge variant="outline" className="text-xs">{r.auth_type}</Badge></td>
                      <td className="px-3 py-2">
                        <Badge className={r.enabled ? 'bg-emerald-500/20 dg-text-green border-emerald-500/30' : 'bg-[var(--dg-bg-active)]/20 dg-text-secondary border-[var(--dg-border)]'}>{r.enabled ? t('common.enable') : t('common.disable')}</Badge>
                      </td>
                      <td className="px-3 py-2 text-right">
                        <div className="flex justify-end gap-1">
                          <Button variant="ghost" size="icon" className="h-7 w-7" onClick={() => { setEditType('repo'); setEditingId(r.id); setEditorOpen(true); }}><Pencil className="w-3.5 h-3.5" /></Button>
                          <Button variant="ghost" size="icon" className="h-7 w-7 text-red-500" onClick={() => handleDelete('repo', r)}><Trash2 className="w-3.5 h-3.5" /></Button>
                        </div>
                      </td>
                    </tr>
                  ))}
                </tbody>
              </table>
            </div>
          </ContentPanel>
        )
      )}

      {activeTab === 'registries' && (
        registries.length === 0 ? (
          <PageEmpty icon={<Container className="h-10 w-10" />} title={t('deploy.credForm.noRegistry')} />
        ) : (
          <ContentPanel noPadding>
            <div className="overflow-hidden">
              <table className="w-full text-sm">
                <thead className="bg-[var(--dg-bg-tertiary)] border-b border-[var(--dg-border)]">
                  <tr>
                    <th className="px-3 py-2 text-left font-medium text-[var(--dg-text-secondary)]">{t('deploy.table.name')}</th>
                    <th className="px-3 py-2 text-left font-medium text-[var(--dg-text-secondary)] hidden md:table-cell">Registry URL</th>
                    <th className="px-3 py-2 text-left font-medium text-[var(--dg-text-secondary)] hidden sm:table-cell">{t('deploy.credForm.namespace')}</th>
                    <th className="px-3 py-2 text-left font-medium text-[var(--dg-text-secondary)]">{t('deploy.cred.authMethod')}</th>
                    <th className="px-3 py-2 text-left font-medium text-[var(--dg-text-secondary)]">{t('deploy.table.status')}</th>
                    <th className="px-3 py-2 text-right font-medium text-[var(--dg-text-secondary)]">{t('common.actions')}</th>
                  </tr>
                </thead>
                <tbody>
                  {registries.map(r => (
                    <tr key={r.id} className="border-b border-[var(--dg-border)] hover:bg-[var(--dg-bg-tertiary)]/50">
                      <td className="px-3 py-2 font-medium text-[var(--dg-text-primary)]">{r.name}</td>
                      <td className="px-3 py-2 text-[var(--dg-text-secondary)] hidden md:table-cell font-mono text-xs max-w-[250px] truncate">{r.registry_url}</td>
                      <td className="px-3 py-2 text-[var(--dg-text-secondary)] hidden sm:table-cell">{r.namespace || '-'}</td>
                      <td className="px-3 py-2"><Badge variant="outline" className="text-xs">{r.auth_type}</Badge></td>
                      <td className="px-3 py-2">
                        <Badge className={r.enabled ? 'bg-emerald-500/20 dg-text-green border-emerald-500/30' : 'bg-[var(--dg-bg-active)]/20 dg-text-secondary border-[var(--dg-border)]'}>{r.enabled ? t('common.enable') : t('common.disable')}</Badge>
                      </td>
                      <td className="px-3 py-2 text-right">
                        <div className="flex justify-end gap-1">
                          <Button variant="ghost" size="icon" className="h-7 w-7" onClick={() => { setEditType('registry'); setEditingId(r.id); setEditorOpen(true); }}><Pencil className="w-3.5 h-3.5" /></Button>
                          <Button variant="ghost" size="icon" className="h-7 w-7 text-red-500" onClick={() => handleDelete('registry', r)}><Trash2 className="w-3.5 h-3.5" /></Button>
                        </div>
                      </td>
                    </tr>
                  ))}
                </tbody>
              </table>
            </div>
          </ContentPanel>
        )
      )}

      {activeTab === 'environments' && (
        <>
          <div className="flex items-center justify-end mb-3">
            <Button size="sm" className="dg-btn-primary" onClick={() => { setEditEnv(null); setEnvDialogOpen(true); }}>
              <Plus className="w-4 h-4 mr-1" />{t("common.newEnv")}
            </Button>
          </div>
          {environments.length === 0 ? (
            <PageEmpty
              icon={<Globe className="h-10 w-10" />}
              title={t('deploy.noEnvConfig')}
              description={t('deploy.clickEnvConfigHint')}
              action={(
                <Button size="sm" onClick={() => { setEditEnv(null); setEnvDialogOpen(true); }}>
                  <Plus className="w-4 h-4 mr-1" />{t("common.newEnv")}
                </Button>
              )}
            />
          ) : (
            <ContentPanel noPadding>
              <div className="overflow-hidden">
              <table className="w-full text-sm">
                <thead className="bg-[var(--dg-bg-tertiary)] border-b border-[var(--dg-border)]">
                  <tr>
                    <th className="px-3 py-2 text-left font-medium text-[var(--dg-text-secondary)]">{t("common.envLabel")}</th>
                    <th className="px-3 py-2 text-left font-medium text-[var(--dg-text-secondary)]">{t("common.displayName")}</th>
                    <th className="px-3 py-2 text-left font-medium text-[var(--dg-text-secondary)]">{t("common.type")}</th>
                    <th className="px-3 py-2 text-left font-medium text-[var(--dg-text-secondary)]">{t("common.color")}</th>
                    <th className="px-3 py-2 text-left font-medium text-[var(--dg-text-secondary)]">{t("common.sort")}</th>
                    <th className="px-3 py-2 text-left font-medium text-[var(--dg-text-secondary)]">{t("common.status")}</th>
                    <th className="px-3 py-2 text-right font-medium text-[var(--dg-text-secondary)]">{t("common.actions")}</th>
                  </tr>
                </thead>
                <tbody>
                  {environments.map(env => (
                    <tr key={env.id} className="border-b border-[var(--dg-border)] hover:bg-[var(--dg-bg-tertiary)]/50">
                      <td className="px-3 py-2 font-mono text-xs font-medium text-[var(--dg-text-primary)]">{env.name}</td>
                      <td className="px-3 py-2 text-[var(--dg-text-primary)]">
                        <span className="flex items-center gap-1.5">
                          <span className="w-2.5 h-2.5 rounded-full inline-block" style={{ backgroundColor: env.color }} />
                          {env.display_name}
                        </span>
                      </td>
                      <td className="px-3 py-2"><Badge variant="secondary" className="text-xs">{envTypeLabel[env.type] || env.type}</Badge></td>
                      <td className="px-3 py-2"><div className="w-6 h-6 rounded border" style={{ backgroundColor: env.color }} /></td>
                      <td className="px-3 py-2 text-[var(--dg-text-secondary)]">{env.sort_order}</td>
                      <td className="px-3 py-2">
                        <Badge className={env.enabled ? 'bg-emerald-500/20 dg-text-green border-emerald-500/30' : 'bg-[var(--dg-bg-active)]/20 dg-text-secondary border-[var(--dg-border)]'}>{env.enabled ? '启用' : '禁用'}</Badge>
                      </td>
                      <td className="px-3 py-2 text-right">
                        <div className="flex justify-end gap-1">
                          <Button variant="ghost" size="icon" className="h-7 w-7" onClick={() => { setEditEnv(env); setEnvDialogOpen(true); }}><Pencil className="w-3.5 h-3.5" /></Button>
                          <Button variant="ghost" size="icon" className="h-7 w-7 text-red-500" onClick={() => handleDelete('env', env)}><Trash2 className="w-3.5 h-3.5" /></Button>
                        </div>
                      </td>
                    </tr>
                  ))}
                </tbody>
              </table>
              </div>
            </ContentPanel>
          )}
        </>
      )}

      {activeTab === 'build-nodes' && <BuildNodesManager embedded />}

      {activeTab === 'tools' && <ToolConfigTab />}

      <CredentialFormDialog
        open={editorOpen} onOpenChange={setEditorOpen} type={editType} editId={editingId}
        repos={repos} registries={registries} onSave={fetchAll}
      />

      <EnvFormDialog open={envDialogOpen} onClose={() => setEnvDialogOpen(false)} onSaved={fetchAll} editData={editEnv} />
    </PageShell>
  );
}