{-# LANGUAGE CPP #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE TypeApplications #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE TemplateHaskell #-}
{-# LANGUAGE QuasiQuotes #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE DuplicateRecordFields #-}
{-# LANGUAGE RankNTypes #-}
module GHCup.OptParse.Config where
import GHCup.Errors
import GHCup.Types
import GHCup.Utils
import GHCup.Prelude
import GHCup.Prelude.Logger
import GHCup.Prelude.String.QQ
import GHCup.OptParse.Common
#if !MIN_VERSION_base(4,13,0)
import Control.Monad.Fail ( MonadFail )
#endif
import Control.Exception ( displayException )
import Control.Monad.Reader
import Control.Monad.Trans.Resource
import Data.Functor
import Data.Maybe
import Haskus.Utils.Variant.Excepts
import Options.Applicative hiding ( style, ParseError )
import Options.Applicative.Help.Pretty ( text )
import Prelude hiding ( appendFile )
import System.Exit
import URI.ByteString hiding ( uriParser )
import qualified Data.Text as T
import qualified Data.ByteString.UTF8 as UTF8
import qualified Data.Yaml.Aeson as Y
import Control.Exception.Safe (MonadMask)
----------------
--[ Commands ]--
----------------
data ConfigCommand
= ShowConfig
| SetConfig String (Maybe String)
| InitConfig
| AddReleaseChannel Bool URI
---------------
--[ Parsers ]--
---------------
configP :: Parser ConfigCommand
configP = subparser
( command "init" initP
<> command "set" setP -- [set] KEY VALUE at help lhs
<> command "show" showP
<> command "add-release-channel" addP
)
<|> argsP -- add show for a single option
<|> pure ShowConfig
where
initP = info (pure InitConfig) (progDesc "Write default config to ~/.ghcup/config.yaml")
showP = info (pure ShowConfig) (progDesc "Show current config (default)")
setP = info argsP (progDesc "Set config KEY to VALUE (or specify as single json value)" <> footerDoc (Just $ text configSetFooter))
argsP = SetConfig <$> argument str (metavar "<JSON_VALUE | YAML_KEY>") <*> optional (argument str (metavar "YAML_VALUE"))
addP = info (AddReleaseChannel <$> switch (long "force" <> help "Delete existing entry (if any) and append instead of failing") <*> argument (eitherReader uriParser) (metavar "URI" <> completer fileUri))
(progDesc "Add a release channel from a URI")
--------------
--[ Footer ]--
--------------
configFooter :: String
configFooter = [s|Examples:
# show current config
ghcup config
# initialize config
ghcup config init
# set <key> <value> configuration pair
ghcup config set <key> <value>|]
configSetFooter :: String
configSetFooter = [s|Examples:
# disable caching
ghcup config set cache false
# switch downloader to wget
ghcup config set downloader Wget
# set mirror for ghcup metadata
ghcup config set '{url-source: { OwnSource: "<url>"}}'|]
-----------------
--[ Utilities ]--
-----------------
formatConfig :: UserSettings -> String
formatConfig = UTF8.toString . Y.encode
updateSettings :: UserSettings -> UserSettings -> UserSettings
updateSettings usl usr =
let cache' = uCache usl <|> uCache usr
metaCache' = uMetaCache usl <|> uMetaCache usr
metaMode' = uMetaMode usl <|> uMetaMode usr
noVerify' = uNoVerify usl <|> uNoVerify usr
verbose' = uVerbose usl <|> uVerbose usr
keepDirs' = uKeepDirs usl <|> uKeepDirs usr
downloader' = uDownloader usl <|> uDownloader usr
urlSource' = uUrlSource usl <|> uUrlSource usr
noNetwork' = uNoNetwork usl <|> uNoNetwork usr
gpgSetting' = uGPGSetting usl <|> uGPGSetting usr
platformOverride' = uPlatformOverride usl <|> uPlatformOverride usr
mirrors' = uMirrors usl <|> uMirrors usr
in UserSettings cache' metaCache' metaMode' noVerify' verbose' keepDirs' downloader' (updateKeyBindings (uKeyBindings usl) (uKeyBindings usr)) urlSource' noNetwork' gpgSetting' platformOverride' mirrors'
where
updateKeyBindings :: Maybe UserKeyBindings -> Maybe UserKeyBindings -> Maybe UserKeyBindings
updateKeyBindings Nothing Nothing = Nothing
updateKeyBindings (Just kbl) Nothing = Just kbl
updateKeyBindings Nothing (Just kbr) = Just kbr
updateKeyBindings (Just kbl) (Just kbr) =
Just $ UserKeyBindings {
kUp = kUp kbl <|> kUp kbr
, kDown = kDown kbl <|> kDown kbr
, kQuit = kQuit kbl <|> kQuit kbr
, kInstall = kInstall kbl <|> kInstall kbr
, kUninstall = kUninstall kbl <|> kUninstall kbr
, kSet = kSet kbl <|> kSet kbr
, kChangelog = kChangelog kbl <|> kChangelog kbr
, kShowAll = kShowAll kbl <|> kShowAll kbr
, kShowAllTools = kShowAllTools kbl <|> kShowAllTools kbr
}
------------------
--[ Entrypoint ]--
------------------
data Duplicate = Duplicate -- ^ there is a duplicate somewhere in the middle
| NoDuplicate -- ^ there is no duplicate
| DuplicateLast -- ^ there's a duplicate, but it's the last element
config :: forall m. ( Monad m
, MonadMask m
, MonadUnliftIO m
, MonadFail m
)
=> ConfigCommand
-> Settings
-> UserSettings
-> KeyBindings
-> (ReaderT LeanAppState m () -> m ())
-> m ExitCode
config configCommand settings userConf keybindings runLogger = case configCommand of
InitConfig -> do
path <- getConfigFilePath
liftIO $ writeFile path $ formatConfig $ fromSettings settings (Just keybindings)
runLogger $ logDebug $ "config.yaml initialized at " <> T.pack path
pure ExitSuccess
ShowConfig -> do
liftIO $ putStrLn $ formatConfig $ fromSettings settings (Just keybindings)
pure ExitSuccess
(SetConfig k mv) -> do
r <- runE @'[JSONError, ParseError] $ do
case mv of
Just "" ->
throwE $ ParseError "Empty values are not allowed"
Nothing -> do
usersettings <- decodeSettings k
lift $ doConfig usersettings
pure ()
Just v -> do
usersettings <- decodeSettings (k <> ": " <> v <> "\n")
lift $ doConfig usersettings
pure ()
case r of
VRight _ -> pure ExitSuccess
VLeft (V (JSONDecodeError e)) -> do
runLogger $ logError $ "Error decoding config: " <> T.pack e
pure $ ExitFailure 65
VLeft _ -> pure $ ExitFailure 65
AddReleaseChannel force uri -> do
r <- runE @'[DuplicateReleaseChannel] $ do
case urlSource settings of
AddSource xs -> do
case checkDuplicate xs (Right uri) of
Duplicate
| not force -> throwE (DuplicateReleaseChannel uri)
DuplicateLast -> pure ()
_ -> lift $ doConfig (defaultUserSettings { uUrlSource = Just $ AddSource (appendUnique xs (Right uri)) })
GHCupURL -> do
lift $ doConfig (defaultUserSettings { uUrlSource = Just $ AddSource [Right uri] })
pure ()
OwnSource xs -> do
case checkDuplicate xs (Right uri) of
Duplicate
| not force -> throwE (DuplicateReleaseChannel uri)
DuplicateLast -> pure ()
_ -> lift $ doConfig (defaultUserSettings { uUrlSource = Just $ OwnSource (appendUnique xs (Right uri)) })
OwnSpec spec -> do
lift $ doConfig (defaultUserSettings { uUrlSource = Just $ OwnSource [Left spec, Right uri] })
pure ()
case r of
VRight _ -> do
pure ExitSuccess
VLeft e -> do
runLogger $ logError $ T.pack $ prettyHFError e
pure $ ExitFailure 15
where
checkDuplicate :: Eq a => [a] -> a -> Duplicate
checkDuplicate xs a
| last xs == a = DuplicateLast
| a `elem` xs = Duplicate
| otherwise = NoDuplicate
-- appends the element to the end of the list, but also removes it from the existing list
appendUnique :: Eq a => [a] -> a -> [a]
appendUnique xs' e = go xs'
where
go [] = [e]
go (x:xs)
| x == e = go xs -- skip
| otherwise = x : go xs
doConfig :: MonadIO m => UserSettings -> m ()
doConfig usersettings = do
let settings' = updateSettings usersettings userConf
path <- liftIO getConfigFilePath
liftIO $ writeFile path $ formatConfig $ settings'
runLogger $ logDebug $ T.pack $ show settings'
pure ()
decodeSettings = lE' (JSONDecodeError . displayException) . Y.decodeEither' . UTF8.fromString