import { useQuery } from '@tanstack/react-query';
import { useSkateRelays } from '@/hooks/useSkateRelays';
import {
  SKATE_CREW_KIND,
  CALENDAR_EVENT_KIND,
  parseSkateEvent,
  type SkateEvent,
} from '@/lib/types';

/**
 * Events hosted BY a crew — calendar events (kind 31923) carrying an `a` tag
 * that points back at the crew coordinate (`35006:pubkey:d`).
 *
 * This powers the "Hosted by [crew]" link on events and the crew's own
 * "Upcoming jams" list. Crew-hosted events close the Crews ↔ Events ↔ Zaps loop.
 */
export function useCrewEvents(crewPubkey?: string, crewIdentifier?: string, limit = 30) {
  const { querySkateContent, getQueryKeySuffix } = useSkateRelays();
  const crewCoord =
    crewPubkey && crewIdentifier
      ? `${SKATE_CREW_KIND}:${crewPubkey}:${crewIdentifier}`
      : '';

  return useQuery({
    queryKey: ['crew-events', crewCoord, getQueryKeySuffix()],
    enabled: !!crewCoord,
    staleTime: 60 * 1000,
    gcTime: 30 * 60 * 1000,
    queryFn: async () => {
      const signal = AbortSignal.timeout(10000);
      const events = await querySkateContent(
        [{ kinds: [CALENDAR_EVENT_KIND], '#a': [crewCoord], limit }],
        { signal },
      );

      const parsed: SkateEvent[] = [];
      for (const ev of events) {
        const skateEvent = parseSkateEvent(ev);
        // Guard against loose relay matches — the `a` tag must be present.
        const hasCrewRef = ev.tags.some(([t, v]) => t === 'a' && v === crewCoord);
        if (skateEvent && hasCrewRef) parsed.push(skateEvent);
      }

      // Soonest upcoming first, then past.
      const now = Math.floor(Date.now() / 1000);
      return parsed.sort((a, b) => {
        const aFuture = a.start >= now ? 0 : 1;
        const bFuture = b.start >= now ? 0 : 1;
        if (aFuture !== bFuture) return aFuture - bFuture;
        return a.start - b.start;
      });
    },
  });
}