ghcup-hs/app/ghcup/GHCup/OptParse/Nuke.hs

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2021-10-15 20:24:23 +00:00
{-# LANGUAGE CPP #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE TypeApplications #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE DuplicateRecordFields #-}
{-# LANGUAGE RankNTypes #-}
module GHCup.OptParse.Nuke where
import GHCup
import GHCup.Errors
import GHCup.Types
import GHCup.Utils.Logger
#if !MIN_VERSION_base(4,13,0)
import Control.Monad.Fail ( MonadFail )
#endif
import Control.Monad.Reader
import Control.Monad.Trans.Resource
import Data.Maybe
import Haskus.Utils.Variant.Excepts
import Options.Applicative hiding ( style )
import Prelude hiding ( appendFile )
import System.Exit
import Text.PrettyPrint.HughesPJClass ( prettyShow )
import qualified Data.Text as T
import Control.Exception.Safe (MonadMask)
import Control.DeepSeq
import Control.Exception
import Control.Concurrent (threadDelay)
---------------------------
--[ Effect interpreters ]--
---------------------------
type NukeEffects = '[ NotInstalled ]
runNuke :: AppState
-> Excepts NukeEffects (ReaderT AppState m) a
-> m (VEither NukeEffects a)
runNuke s' =
flip runReaderT s' . runE @NukeEffects
------------------
--[ Entrypoint ]--
------------------
nuke :: ( Monad m
, MonadMask m
, MonadUnliftIO m
, MonadFail m
)
=> IO AppState
-> (ReaderT LeanAppState m () -> m ())
-> m ExitCode
nuke appState runLogger = do
s' <- liftIO appState
void $ liftIO $ evaluate $ force s'
runNuke s' (do
lift $ logWarn "WARNING: This will remove GHCup and all installed components from your system."
lift $ logWarn "Waiting 10 seconds before commencing, if you want to cancel it, now would be the time."
liftIO $ threadDelay 10000000 -- wait 10s
lift $ logInfo "Initiating Nuclear Sequence 🚀🚀🚀"
lift $ logInfo "Nuking in 3...2...1"
lInstalled <- lift $ listVersions Nothing (Just ListInstalled)
forM_ lInstalled (liftE . rmTool)
lift rmGhcupDirs
) >>= \case
VRight leftOverFiles
| null leftOverFiles -> do
runLogger $ logInfo "Nuclear Annihilation complete!"
pure ExitSuccess
| otherwise -> do
runLogger $ logError "These Files have survived Nuclear Annihilation, you may remove them manually."
liftIO $ forM_ leftOverFiles putStrLn
pure ExitSuccess
VLeft e -> do
runLogger $ logError $ T.pack $ prettyShow e
pure $ ExitFailure 15