import { useMutation, useQueryClient } from '@tanstack/react-query';
import { useNostr } from '@nostrify/react';
import { useCurrentUser } from '@/hooks/useCurrentUser';
import {
  MEMBERSHIP_LABEL_NAMESPACE,
  MEMBERSHIP_LABEL_VALUE,
  type MemberVisibility,
} from '@/lib/types';

interface AttestParams {
  /** Kind of the collective profile being joined. */
  kind: number;
  /** Founder pubkey (author of the collective profile). */
  founderPubkey: string;
  /** d-tag identifier of the collective profile. */
  identifier: string;
  /** Collective display name (stored in content for readability). */
  collectiveName?: string;
  /** Relay hint for the referenced collective. */
  relayHint?: string;
  /** Opt-in visibility choice — defaults to 'public' if omitted. */
  visibility?: MemberVisibility;
}

/**
 * Publish a NIP-32 membership attestation (kind 1985) confirming that the
 * logged-in user is a member of the given collective. Signed with the user's
 * OWN key, so the confirmation cannot be forged by the collective.
 */
export function useConfirmMembership() {
  const { nostr } = useNostr();
  const { user } = useCurrentUser();
  const queryClient = useQueryClient();

  return useMutation({
    mutationFn: async ({
      kind,
      founderPubkey,
      identifier,
      collectiveName,
      relayHint,
      visibility = 'public',
    }: AttestParams) => {
      if (!user) throw new Error('You must be logged in to confirm membership');

      const address = `${kind}:${founderPubkey}:${identifier}`;
      const aTag = relayHint ? ['a', address, relayHint] : ['a', address];

      const tags: string[][] = [
        ['L', MEMBERSHIP_LABEL_NAMESPACE],
        ['l', MEMBERSHIP_LABEL_VALUE, MEMBERSHIP_LABEL_NAMESPACE],
        aTag,
        ['p', founderPubkey],
        ['visibility', visibility],
        ['alt', `Skate collective membership confirmation for ${collectiveName ?? address}`],
      ];

      const event = await user.signer.signEvent({
        kind: 1985,
        content: collectiveName
          ? `I'm a member of ${collectiveName}`
          : 'Confirmed collective membership',
        tags,
        created_at: Math.floor(Date.now() / 1000),
      });

      await nostr.event(event, { signal: AbortSignal.timeout(15000) });
      return event;
    },
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: ['collective-members'] });
    },
  });
}