(function exposeAvailability(root, factory) {
  const api = factory();
  if (typeof module === "object" && module.exports) module.exports = api;
  if (root) root.ValleyAvailability = api;
})(typeof window === "undefined" ? globalThis : window, () => {
  const weatherFor = entry => {
    if (!String(entry.id || "").startsWith("fish-")) return null;
    const detail = String(entry.meta || "").toLowerCase();
    if (detail.includes("rain")) return "Rain";
    if (detail.includes("sunny")) return "Sun";
    return null;
  };

  const classify = (entry, { checked, chooseGroupComplete, season }) => {
    const seasons = Array.isArray(entry.seasons) ? entry.seasons : [];
    const seasonal = seasons.length > 0;
    const inSeason = seasons.includes(season);
    const availableNow = !seasonal || inSeason;
    const needed = !checked && !chooseGroupComplete;
    return {
      checked,
      needed,
      seasonal,
      inSeason,
      availableNow,
      seasonExclusive: needed && inSeason && seasons.length === 1,
      weather: weatherFor(entry),
      seasons
    };
  };

  const matchesFilter = (status, filter) => {
    if (filter === "open") return status.needed;
    if (filter === "now") return status.needed && status.availableNow;
    if (filter === "exclusive") return status.seasonExclusive;
    if (filter === "weather") return status.needed && status.availableNow && Boolean(status.weather);
    return true;
  };

  return { classify, matchesFilter, weatherFor };
});