import { useQuery } from '@tanstack/react-query';
import { MARKETPLACE_ITEM_KIND, parseMarketplaceItem, type MarketplaceItem } from '@/lib/types';
import { useSkateRelays } from '@/hooks/useSkateRelays';
import { useAdminModeration, filterAdminHidden } from '@/hooks/useAdminModeration';

const STALE_TIME = 5 * 60 * 1000;  // 5 min
const GC_TIME    = 30 * 60 * 1000; // 30 min
const TIMEOUT    = 8000;

export function useMarketplaceItems(limit = 100, options: { includeHidden?: boolean } = {}) {
  const { includeHidden = false } = options;
  const { querySkateContent, getQueryKeySuffix } = useSkateRelays();
  const hidden = useAdminModeration();

  return useQuery({
    queryKey: ['marketplace-items', limit, getQueryKeySuffix()],
    // `includeHidden`: admin tooling only (review queue + undo).
    select: (items: MarketplaceItem[]) =>
      includeHidden ? items : filterAdminHidden(items, MARKETPLACE_ITEM_KIND, hidden),
    queryFn: async () => {
      const signal = AbortSignal.timeout(TIMEOUT);

      const events = await querySkateContent(
        [
          {
            kinds: [MARKETPLACE_ITEM_KIND],
            '#t': ['skateboarding'],
            limit,
          },
        ],
        { signal, requireAny: true }
      );

      const items: MarketplaceItem[] = [];
      for (const event of events) {
        // Skip showcase-only Stash items (public gear that is NOT for sale):
        // they belong on the profile's public Stash, not the sellable marketplace.
        const isShowcaseOnly = event.tags.some((t) => t[0] === 'showcase' && t[1] === 'true');
        if (isShowcaseOnly) continue;
        const item = parseMarketplaceItem(event);
        if (item) items.push(item);
      }

      return items.sort((a, b) => b.createdAt - a.createdAt);
    },
    staleTime: STALE_TIME,
    gcTime: GC_TIME,
    refetchOnMount: true,
  });
}

export function useMarketplaceAtSpot(spotPubkey: string, spotIdentifier: string, limit = 20) {
  const { querySkateContent, getQueryKeySuffix } = useSkateRelays();
  const hidden = useAdminModeration();

  return useQuery({
    queryKey: ['marketplace-at-spot', spotPubkey, spotIdentifier, getQueryKeySuffix()],
    select: (items: MarketplaceItem[]) => filterAdminHidden(items, MARKETPLACE_ITEM_KIND, hidden),
    queryFn: async () => {
      const signal = AbortSignal.timeout(TIMEOUT);

      const spotRef = `30818:${spotPubkey}:${spotIdentifier}`;

      const events = await querySkateContent(
        [
          {
            kinds: [MARKETPLACE_ITEM_KIND],
            '#a': [spotRef],
            '#t': ['skateboarding'],
            limit,
          },
        ],
        { signal }
      );

      const items: MarketplaceItem[] = [];
      for (const event of events) {
        const isShowcaseOnly = event.tags.some((t) => t[0] === 'showcase' && t[1] === 'true');
        if (isShowcaseOnly) continue;
        const item = parseMarketplaceItem(event);
        if (item && (!item.status || item.status === 'active')) {
          items.push(item);
        }
      }

      return items.sort((a, b) => b.createdAt - a.createdAt);
    },
    enabled: !!spotPubkey && !!spotIdentifier,
    staleTime: STALE_TIME,
    gcTime: GC_TIME,
    refetchOnMount: true,
  });
}

/** Fetch a single marketplace listing by author + `d` (including sold/inactive). */
export function useMarketplaceItem(pubkey?: string, identifier?: string) {
  const { querySkateContent, getQueryKeySuffix } = useSkateRelays();

  return useQuery({
    queryKey: ['marketplace-item', pubkey, identifier, getQueryKeySuffix()],
    enabled: !!pubkey && !!identifier,
    staleTime: STALE_TIME,
    gcTime: GC_TIME,
    queryFn: async (): Promise<MarketplaceItem | null> => {
      if (!pubkey || !identifier) return null;
      const signal = AbortSignal.timeout(TIMEOUT);
      const events = await querySkateContent(
        [{ kinds: [MARKETPLACE_ITEM_KIND], authors: [pubkey], '#d': [identifier], limit: 5 }],
        { signal },
      );
      const newest = [...events].sort((a, b) => b.created_at - a.created_at)[0];
      return newest ? parseMarketplaceItem(newest) : null;
    },
  });
}