import dayjs, { Dayjs, ManipulateType, OpUnitType } from 'dayjs';

export const dateFormat = (date: string | Dayjs, format: string, locale = 'de'): string => {
  const d = dayjs.utc(date).tz('Europe/Berlin');

  return d.locale(locale).format(format);
};

export const dateDE = (date: string | Dayjs): string => {
  const d = dayjs.utc(date).tz('Europe/Berlin');

  return d.format('DD.MM.YYYY');
};

export const toDate = (date: string): Dayjs => {
  return dayjs.utc(date).tz('Europe/Berlin');
};

export const dateAdd = (date: string | Dayjs, unit: ManipulateType, value: number): Dayjs => {
  return dayjs.utc(date).tz('Europe/Berlin').add(value, unit);
};

export const startOf = (date: string | Dayjs, unit: OpUnitType): Dayjs => {
  return dayjs.utc(date).tz('Europe/Berlin').startOf(unit);
};

export const getAge = (birthDateStr: string): number => {
  const birthDate = dayjs(birthDateStr);
  const age = dayjs().diff(birthDate, 'year');

  return age;
};

export const getAgeFrom = (birthDateStr: string, from: string): number => {
  const birthDate = dayjs(birthDateStr);
  const fromDate = dayjs(from);
  const age = dayjs(fromDate).diff(birthDate, 'year');

  return age;
};