import { useQuery } from '@tanstack/react-query';
import { useNostr } from '@nostrify/react';

import { useCurrentUser } from './useCurrentUser';
import { onlyVerified } from '@/lib/verifyEvents';
import {
  HOUSE_TRUST_PROVIDER,
  NIP85_PROVIDER_LIST_KIND,
  NIP85_USER_ASSERTION_KIND,
  parseProviderDesignation,
  resolveProvider,
  type TrustProvider,
} from '@/lib/nip85';

/**
 * The trust provider currently in effect for the viewer: the one named in their
 * own kind-10040 designation, or the house provider when there is no
 * designation. Read-only — publishing a designation is a separate step.
 */
export function useTrustProvider() {
  const { nostr } = useNostr();
  const { user } = useCurrentUser();
  const pubkey = user?.pubkey;

  return useQuery({
    queryKey: ['trust-provider', pubkey],
    enabled: !!pubkey,
    staleTime: 5 * 60 * 1000,
    queryFn: async (c): Promise<TrustProvider> => {
      if (!pubkey) return HOUSE_TRUST_PROVIDER;
      const signal = AbortSignal.any([c.signal, AbortSignal.timeout(8000)]);
      const events = onlyVerified(await nostr.query(
        [{ kinds: [NIP85_PROVIDER_LIST_KIND], authors: [pubkey], limit: 1 }],
        { signal },
      ));
      const designation = parseProviderDesignation(events[0]);
      return resolveProvider(designation, NIP85_USER_ASSERTION_KIND, 'rank', HOUSE_TRUST_PROVIDER);
    },
  });
}