#!/usr/bin/env stack
--stack --install-ghc runghc

module ArgParse (parse_args) where

-- Here we will service arguments passed to the program in the simplest manner
-- possible.

import System.Environment
import System.Exit
import Pomodoro (worker)
import Clock    (countdown)

main = parse_args

parse_args = getArgs >>= parse

parse ["-h"] = usage   >> exit
parse ["-v"] = version >> exit
parse ["--session"] = worker
parse []     = countdown
parse _      = putStrLn "Invalid argument." >> usage >> exit

usage   = putStrLn "Usage: monadoro [-vh] [--session]"
version = putStrLn "Monadoro 2.1.2"
exit    = exitWith ExitSuccess
die     = exitWith (ExitFailure 1)