import type { Place } from "./types";

const DAYS = ["sun", "mon", "tue", "wed", "thu", "fri", "sat"] as const;

export function isOpenNow(place: Place): boolean | null {
  const oh = (place.details as Record<string, unknown>)?.openHours as
    Record<string, [string, string]> | undefined;
  if (!oh) return null;

  const now = new Date();
  const day = DAYS[now.getDay()];
  const range = oh[day];
  if (!range) return null;

  const [openStr, closeStr] = range;
  const mins = now.getHours() * 60 + now.getMinutes();
  const openMins = parseTime(openStr);
  const closeMins = parseTime(closeStr);

  if (openMins === 0 && closeMins === 1440) return true;

  return mins >= openMins && mins < closeMins;
}

function parseTime(t: string): number {
  const [h, m] = t.split(":").map(Number);
  return h * 60 + m;
}