import { DoseStatus } from '../types';

export interface DoseStatusParams {
  takenAt?: string;
  snoozedUntil?: string;
  scheduledTime: Date;
  now: Date;
}

export const determineDoseStatus = ({
  takenAt,
  snoozedUntil,
  scheduledTime,
  now,
}: DoseStatusParams): DoseStatus => {
  if (takenAt) {
    return DoseStatus.TAKEN;
  }

  if (snoozedUntil) {
    const snoozeTime = new Date(snoozedUntil);
    if (!Number.isNaN(snoozeTime.getTime())) {
      if (snoozeTime.getTime() > now.getTime()) {
        return DoseStatus.SNOOZED;
      }
      return DoseStatus.UPCOMING;
    }
  }

  if (scheduledTime.getTime() < now.getTime()) {
    return DoseStatus.MISSED;
  }

  return DoseStatus.UPCOMING;
};