import { T_CoreArgs, T_IntervalUnit, T_Rule } from '@/helpers/types/lib'
import { INTERVAL_UNITS } from '@/helpers/constants/commons'

export const POSTPONERS: Record<
  T_CoreArgs['direction'],
  Record<T_IntervalUnit, (start: T_CoreArgs['start'], interval: T_Rule['portion']) => void>
> = {
  backward: {
    [INTERVAL_UNITS.millisecond]: (date, interval) => date.setTime(date.getTime() - interval),
    [INTERVAL_UNITS.minute]: (date, interval) => date.setMinutes(date.getMinutes() - interval),
    [INTERVAL_UNITS.hour]: (date, interval) => date.setHours(date.getHours() - interval),
    [INTERVAL_UNITS.day]: (date, interval) => date.setDate(date.getDate() - interval),
    [INTERVAL_UNITS.week]: (date, interval) => date.setDate(date.getDate() - interval * 7),
    [INTERVAL_UNITS.month]: (date, interval) => date.setMonth(date.getMonth() - interval),
    [INTERVAL_UNITS.year]: (date, interval) => date.setFullYear(date.getFullYear() - interval),
  },
  forward: {
    [INTERVAL_UNITS.millisecond]: (date, interval) => date.setTime(date.getTime() + interval),
    [INTERVAL_UNITS.minute]: (date, interval) => date.setMinutes(date.getMinutes() + interval),
    [INTERVAL_UNITS.hour]: (date, interval) => date.setHours(date.getHours() + interval),
    [INTERVAL_UNITS.day]: (date, interval) => date.setDate(date.getDate() + interval),
    [INTERVAL_UNITS.week]: (date, interval) => date.setDate(date.getDate() + interval * 7),
    [INTERVAL_UNITS.month]: (date, interval) => date.setMonth(date.getMonth() + interval),
    [INTERVAL_UNITS.year]: (date, interval) => date.setFullYear(date.getFullYear() + interval),
  },
}