import { fromKstInput, kstFields } from '../../src/ui/time.ts';
import { THREADS } from '../../src/constants/threads.ts';

export function nextRunAt(now: Date, completedDate?: string): Date {
  const date = kstFields(now).date;
  const today = fromKstInput(date, THREADS.scheduleHourKst * 60);
  if (completedDate === date) {
    const tomorrow = new Date(+fromKstInput(date, 12 * 60) + 86_400_000);
    return fromKstInput(kstFields(tomorrow).date, THREADS.scheduleHourKst * 60);
  }
  return +now < +today ? today : now;
}