import std/cmdline
import std/parseopt
import std/strutils

type TimeOrTicks = object
  isTime: bool
  isTicks: bool

type Time = object
  seconds: int = 0
  minutes: int = 0 
  hours: int = 0
  days: int = 0

proc convertToTicks(time: var Time): int =
  time.hours += time.days * 24
  time.minutes += time.hours * 60
  time.seconds += time.minutes * 60

  time.seconds * 20

proc convertToTime(ticks: var int): Time =
  # Note that here div is used for integer division specifically
  const secondsInHour = 3600
  
  ticks = ticks div 20
  var days = ticks div (24 * secondsInHour)

  ticks = ticks mod (24 * secondsInHour)
  var hours = ticks div secondsInHour

  ticks = ticks mod secondsInHour
  var minutes = ticks div 60

  ticks = ticks mod 60
  var seconds = ticks

  Time(seconds: seconds, minutes: minutes, hours: hours, days: days)

when isMainModule:
  var params = commandLineParams()
  var p = initOptParser(params)

  var check = TimeOrTicks()
  var time = Time()
  var ticks = 0

  while true:
    p.next()
    case p.kind
    of cmdEnd: break
    of cmdArgument: continue
    of cmdShortOption, cmdLongOption:
      case p.key
      of "t":
        if check.isTime:
          quit("Cannot convert ticks while converting time")
        ticks = parseInt(p.val)
        check.isTicks = true
      of "s":
        if check.isTicks:
          quit("Cannot convert time while converting ticks")
        time.seconds = parseInt(p.val)
        check.isTime = true
      of "m":
        if check.isTicks:
          quit("Cannot convert time while converting ticks")
        time.minutes = parseInt(p.val)
        check.isTime = true
      of "h":
        if check.isTicks:
          quit("Cannot convert time while converting ticks")
        time.hours = parseInt(p.val)
        check.isTime = true
      of "d":
        if check.isTicks:
          quit("Cannot convert time while converting ticks")
        time.days = parseInt(p.val)
        check.isTime = true

  if check.isTime:
    var result = convertToTicks(time)
    echo "Ticks: ", result
  else:
    var result = convertToTime(ticks)
    echo "Days: ", result.days, "\nHours: ", result.hours, "\nMinutes: ", result.minutes, "\nSeconds: ", result.seconds