{-# LANGUAGE OverloadedStrings #-}

--------------------------------------------------------------------------------
-- | Functions for formatting and spawning shell commands

module XMonad.Internal.Shell
  ( fmtCmd
  , spawnCmd
  , doubleQuote
  , singleQuote
  , skip
  , (#!&&)
  , (#!||)
  , (#!|)
  , (#!>>)
  ) where

import           Control.Monad.IO.Class

import qualified RIO.Text                as T

import           XMonad.Internal.Process

--------------------------------------------------------------------------------
-- | Opening subshell

spawnCmd :: MonadIO m => FilePath -> [T.Text] -> m ()
spawnCmd cmd args = spawn $ T.unpack $ fmtCmd cmd args

--------------------------------------------------------------------------------
-- | Formatting commands

fmtCmd :: FilePath -> [T.Text] -> T.Text
fmtCmd cmd args = T.unwords $ T.pack cmd : args

op :: T.Text -> T.Text -> T.Text -> T.Text
op a x b = T.unwords [a, x, b]

(#!&&) :: T.Text -> T.Text -> T.Text
cmdA #!&& cmdB = op cmdA "&&" cmdB

infixr 0 #!&&

(#!|) :: T.Text -> T.Text -> T.Text
cmdA #!| cmdB = op cmdA "|" cmdB

infixr 0 #!|

(#!||) :: T.Text -> T.Text -> T.Text
cmdA #!|| cmdB = op cmdA "||" cmdB

infixr 0 #!||

(#!>>) :: T.Text -> T.Text -> T.Text
cmdA #!>> cmdB = op cmdA ";" cmdB

infixr 0 #!>>

doubleQuote :: T.Text -> T.Text
doubleQuote s = T.concat ["\"", s, "\""]

singleQuote :: T.Text -> T.Text
singleQuote s = T.concat ["'", s, "'"]

skip :: Monad m => m ()
skip = return ()