type AnilistDate = {
  year: number;
  month: number;
  day: number;
};

const convertDateStringToAniList = (date: string): AnilistDate => {
  if (date === "") {
    return {
      year: 0,
      month: 0,
      day: 0,
    };
  }
  const re = /^([0-9]{4})-([0-9]{2})-([0-9]{2})/;
  const newDate = re.exec(date);
  if (newDate === null) {
    return {
      year: 0,
      month: 0,
      day: 0,
    };
  }
  return {
    year: Number(newDate[1]),
    month: Number(newDate[2]),
    day: Number(newDate[3]),
  };
};

const convertDateToAniList = (date: Date | null): AnilistDate => {
  if (date === null) {
    return {
      year: 0,
      month: 0,
      day: 0,
    };
  }
  return {
    year: Number(date.getFullYear()),
    month: Number(date.getMonth()) + 1,
    day: Number(date.getDate()),
  };
};

export { convertDateStringToAniList, convertDateToAniList };