import type { PondView } from '@dorfteich/shared';
import { useQuery } from '@tanstack/react-query';
import { useTranslation } from 'react-i18next';
import { useParams } from 'react-router-dom';

import { useAuth } from '../auth/auth-context';
import { SettingsLayout } from '../components/SettingsLayout';
import { ApiOptInSetting } from '../api-tokens/ApiOptInSetting';
import { CommentPolicySetting } from '../comments/CommentPolicySetting';
import { WatchToggle } from '../watches/WatchToggle';
import { FormError } from '../components/forms';
import { AppearanceManager } from '../fonts/AppearanceManager';
import { LabelManager } from '../labels/LabelManager';
import { PhantomPagesView } from '../links/PhantomPagesView';
import { AccessRulesManager } from '../access/AccessRulesManager';
import { EffectivePermissionsInspector } from '../access/EffectivePermissionsInspector';
import { PondFileManager } from '../files/PondFileManager';
import { apiGet } from '../lib/api';
import { VaultImportSection } from '../import/VaultImportSection';
import { SidebarViewSetting } from '../layout/SidebarViewSetting';
import { MemberManager } from '../members/MemberManager';
import { DeletePondSection } from '../ponds/DeletePondSection';
import { PondPluginSettings } from '../plugins/PondPluginSettings';

import { useDocumentTitle } from '../lib/use-document-title';
/**
 * Pond settings (issues #44/#54). Hosts the 'Members' and 'Labels' sections;
 * future pond-level configuration (fonts, etc.) joins it here. Member
 * management is Pond-Admin-gated in the api (the MemberManager shows the list
 * to any member and hides the controls otherwise); label management needs
 * modify rights. The sidebar links here for the pond owner (Site Admins and
 * other members can still navigate directly).
 */
export function PondSettingsPage(): React.JSX.Element {
  const { t } = useTranslation('labels');
  const { t: tLinks } = useTranslation('links');
  const { t: tMembers } = useTranslation('members');
  const { t: tErrors } = useTranslation('errors');
  const { t: tFiles } = useTranslation('files');
  const { t: tExport } = useTranslation('export');
  const { t: tComments } = useTranslation('comments');
  const { t: tApiTokens } = useTranslation('apiTokens');
  const { t: tFont } = useTranslation('font');
  const { t: tCommon } = useTranslation();
  const { t: tImport } = useTranslation('import');
  const { pondSlug = '' } = useParams<{ pondSlug: string }>();
  const { user } = useAuth();

  const pond = useQuery({
    queryKey: ['pond', pondSlug],
    queryFn: () => apiGet<PondView>(`/ponds/${pondSlug}`),
  });
  useDocumentTitle(tCommon('settings:title'), pond.data?.name);

  if (pond.error) return <FormError error={pond.error} />;
  if (!pond.data) return <></>;

  const canModify = Boolean(user && (user.isSiteAdmin || user.id === pond.data.ownerId));

  return (
    <div className="pond-settings-page">
      <div className="pond-settings-page__header">
        <h1>{pond.data.name}</h1>
        <WatchToggle targetType="pond" targetId={pond.data.id} variant="icon" />
      </div>
      <SettingsLayout>
        <section>
          <h2>{tMembers('title')}</h2>
          <MemberManager pondId={pond.data.id} />
        </section>
        <AccessRulesManager pondId={pond.data.id} />
        <EffectivePermissionsInspector pondId={pond.data.id} />
        <section>
          <h2>{t('settings.title')}</h2>
          {canModify ? (
            <LabelManager pondId={pond.data.id} />
          ) : (
            <p className="form-banner form-banner--error" role="alert">
              {tErrors('forbidden')}
            </p>
          )}
        </section>
        {canModify && (
          <section>
            <h2>{tLinks('missing.title')}</h2>
            <PhantomPagesView pondId={pond.data.id} pondSlug={pondSlug} />
          </section>
        )}
        {canModify && (
          <section>
            <h2>{tImport('vault.title')}</h2>
            <VaultImportSection pondId={pond.data.id} pondSlug={pondSlug} />
          </section>
        )}
        {canModify && (
          <section>
            <h2>{tFiles('manager.title')}</h2>
            <PondFileManager pondId={pond.data.id} />
          </section>
        )}
        {canModify && (
          <section className="appearance-section">
            <h2>{tFont('heading')}</h2>
            <AppearanceManager
              pondId={pond.data.id}
              pondSlug={pondSlug}
              fonts={pond.data.settings.fonts}
            />
          </section>
        )}
        {canModify && <PondPluginSettings pondId={pond.data.id} />}
        {canModify && (
          <section>
            <h2>{tCommon('layout.sidebar.view.defaultTitle')}</h2>
            <SidebarViewSetting
              pondId={pond.data.id}
              pondSlug={pondSlug}
              value={pond.data.settings.sidebarView}
            />
          </section>
        )}
        {canModify && (
          <section>
            <h2>{tComments('policy.title')}</h2>
            <CommentPolicySetting
              pondId={pond.data.id}
              pondSlug={pondSlug}
              value={pond.data.settings.commentPolicy}
            />
          </section>
        )}
        {canModify && (
          <section>
            <h2>{tApiTokens('pond.title')}</h2>
            <ApiOptInSetting
              pondId={pond.data.id}
              pondSlug={pondSlug}
              value={pond.data.settings.apiEnabled}
              mcpValue={pond.data.settings.mcpEnabled}
            />
          </section>
        )}
        <section className="pond-export">
          <h2>{tExport('pond.heading')}</h2>
          <p className="pond-export__hint">{tExport('pond.hint')}</p>
          <a
            className="button"
            href={`/api/v1/ponds/${pond.data.id}/export/markdown`}
            download={`${pond.data.slug}.zip`}
          >
            {tExport('pond.zip')}
          </a>
        </section>
        {canModify && pond.data.type === 'shared' && (
          <DeletePondSection pondId={pond.data.id} pondName={pond.data.name} />
        )}
      </SettingsLayout>
    </div>
  );
}