import { jsonError } from '@/lib/server/http';
import { requireAuthenticatedSession } from '@/lib/server/auth-session';
import { withStore } from '@/lib/server/store';

type Context = {
  params: Promise<{ id: string }>;
};

export async function DELETE(_request: Request, context: Context) {
  const { session, response } = await requireAuthenticatedSession();
  if (response) {
    return response;
  }

  const userId = session.user.id;
  const { id } = await context.params;
  const numericId = Number(id);

  if (!Number.isInteger(numericId) || numericId <= 0) {
    return jsonError('Invalid watchlist id', 400);
  }

  let removed = false;

  await withStore((store) => {
    const next = store.watchlist.filter((item) => !(item.id === numericId && item.user_id === userId));
    removed = next.length !== store.watchlist.length;
    store.watchlist = next;
  });

  if (!removed) {
    return jsonError('Watchlist item not found', 404);
  }

  return Response.json({ success: true });
}