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|
-- |
-- Copyright : (c) 2015 Egor Tensin <Egor.Tensin@gmail.com>
-- License : MIT
-- Maintainer : Egor.Tensin@gmail.com
-- Stability : experimental
-- Portability : Windows-only
module Main (main) where
import Control.Monad (void)
import Control.Monad.Trans.Except (runExceptT)
import System.IO.Error (ioError)
import Options.Applicative
import qualified WindowsEnv
import Utils.Prompt
import Utils.PromptMessage
data Options = Options
{ optYes :: Bool
, optGlobal :: Bool
, optName :: WindowsEnv.VarName
, optValue :: WindowsEnv.VarValue
} deriving (Eq, Show)
optionParser :: Parser Options
optionParser = Options
<$> optYesDesc
<*> optGlobalDesc
<*> optNameDesc
<*> optValueDesc
where
optYesDesc = switch
$ long "yes" <> short 'y'
<> help "Skip confirmation prompt"
optGlobalDesc = switch
$ long "global" <> short 'g'
<> help "Set for all users"
optNameDesc = argument str
$ metavar "NAME"
<> help "Variable name"
optValueDesc = argument str
$ metavar "VALUE"
<> help "Variable value"
main :: IO ()
main = execParser parser >>= setEnv
where
parser = info (helper <*> optionParser) $
fullDesc <> progDesc "Define environment variables"
setEnv :: Options -> IO ()
setEnv options = runExceptT doSetEnv >>= either ioError return
where
varName = optName options
varValue = optValue options
forAllUsers = optGlobal options
profile
| forAllUsers = WindowsEnv.AllUsers
| otherwise = WindowsEnv.CurrentUser
skipPrompt = optYes options
promptAnd
| skipPrompt = withoutPrompt
| otherwise = withPrompt $ newMessage profile varName varValue
engrave = WindowsEnv.engraveForce profile varName varValue
doSetEnv = void $ promptAnd engrave
|
