import { useQueryClient } from '@tanstack/react-query';
import { useNostrPublish } from '@/hooks/useNostrPublish';
import { useCurrentUser } from '@/hooks/useCurrentUser';
import { MARKETPLACE_ITEM_KIND } from '@/lib/types';
import type { NostrEvent } from '@nostrify/nostrify';

/**
 * Flip a NIP-99 gear listing's status (active ⇄ sold).
 *
 * A listing (kind 30402) is addressable, so re-publishing REPLACES the whole
 * tag set. We therefore start from the original event's tags and change ONLY
 * the `status` tag — every other tag (title, price, images, size, spot `a`
 * ref, geohash, expiration, published_at, category `t` tags…) is carried
 * through untouched. Rebuilding from scratch here would wipe the listing's
 * photos and price, so we deliberately don't.
 */
export function useMarkListingSold() {
  const { mutateAsync: createEvent, isPending } = useNostrPublish();
  const { user } = useCurrentUser();
  const queryClient = useQueryClient();

  const mutate = async ({
    event,
    status,
  }: {
    /** The original listing event. */
    event: NostrEvent;
    /** New status — 'sold' to mark sold, 'active' to relist. */
    status: 'sold' | 'active';
  }) => {
    if (!user) throw new Error('You must be logged in.');
    if (user.pubkey !== event.pubkey) throw new Error('You can only update your own listing.');
    if (event.kind !== MARKETPLACE_ITEM_KIND) throw new Error('Not a gear listing.');

    // Preserve every tag except `status`, then set the new status.
    const tags = event.tags.filter(([name]) => name !== 'status');
    tags.push(['status', status]);

    await createEvent({
      kind: MARKETPLACE_ITEM_KIND,
      content: event.content,
      tags,
    });

    // Refresh marketplace + seller views so the badge updates immediately.
    queryClient.invalidateQueries();
  };

  return { markSold: (event: NostrEvent) => mutate({ event, status: 'sold' }),
           relist: (event: NostrEvent) => mutate({ event, status: 'active' }),
           isPending };
}