    {-# LANGUAGE NoImplicitPrelude #-}
    {-# LANGUAGE OverloadedStrings #-}
    {-# LANGUAGE ScopedTypeVariables #-}
    {-# LANGUAGE CPP #-}

    module Pantry.HPack
        (
         hpack
        , hpackVersion
        ) where

    import RIO
    import RIO.Process
    import Pantry.Types
    import qualified Data.ByteString.Lazy.Char8 as BL
    import qualified Hpack
    import qualified Hpack.Config as Hpack
    import Data.Char (isSpace, isDigit)
    import Path (Path, Abs, toFilePath, Dir, (</>), filename, parseRelFile)
    import Path.IO (doesFileExist)

    hpackVersion
      :: (HasPantryConfig env, HasLogFunc env, HasProcessContext env)
      => RIO env Version
    hpackVersion :: RIO env Version
    hpackVersion = do
      HpackExecutable
    he <- Getting HpackExecutable env HpackExecutable
    -> RIO env HpackExecutable
    forall s (m :: * -> *) a. MonadReader s m => Getting a s a -> m a
    view (Getting HpackExecutable env HpackExecutable
     -> RIO env HpackExecutable)
    -> Getting HpackExecutable env HpackExecutable
    -> RIO env HpackExecutable
    forall a b. (a -> b) -> a -> b
    $ (PantryConfig -> Const HpackExecutable PantryConfig)
    -> env -> Const HpackExecutable env
    forall env. HasPantryConfig env => Lens' env PantryConfig
    pantryConfigL((PantryConfig -> Const HpackExecutable PantryConfig)
     -> env -> Const HpackExecutable env)
    -> ((HpackExecutable -> Const HpackExecutable HpackExecutable)
        -> PantryConfig -> Const HpackExecutable PantryConfig)
    -> Getting HpackExecutable env HpackExecutable
    forall b c a. (b -> c) -> (a -> b) -> a -> c
    .(PantryConfig -> HpackExecutable)
    -> SimpleGetter PantryConfig HpackExecutable
    forall s a. (s -> a) -> SimpleGetter s a
    to PantryConfig -> HpackExecutable
    pcHpackExecutable
      case HpackExecutable
    he of
        HpackBundled -> do
                     let String
    bundledHpackVersion :: String = VERSION_hpack
                     String -> RIO env Version
    forall (m :: * -> *). MonadThrow m => String -> m Version
    parseVersionThrowing String
    bundledHpackVersion
        HpackCommand command :: String
    command -> do
                     String
    version <- ByteString -> String
    BL.unpack (ByteString -> String) -> RIO env ByteString -> RIO env String
    forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
    <$> String
    -> [String]
    -> (ProcessConfig () () () -> RIO env ByteString)
    -> RIO env ByteString
    forall env (m :: * -> *) a.
    (HasProcessContext env, HasLogFunc env, MonadReader env m,
     MonadIO m, HasCallStack) =>
    String -> [String] -> (ProcessConfig () () () -> m a) -> m a
    proc String
    command ["--version"] ProcessConfig () () () -> RIO env ByteString
    forall (m :: * -> *) stdin stdoutIgnored stderr.
    MonadIO m =>
    ProcessConfig stdin stdoutIgnored stderr -> m ByteString
    readProcessStdout_
                     let version' :: String
    version' = (Char -> Bool) -> String -> String
    forall a. (a -> Bool) -> [a] -> [a]
    dropWhile (Bool -> Bool
    not (Bool -> Bool) -> (Char -> Bool) -> Char -> Bool
    forall b c a. (b -> c) -> (a -> b) -> a -> c
    . Char -> Bool
    isDigit) String
    version
                         version'' :: String
    version'' = (Char -> Bool) -> String -> String
    forall a. (a -> Bool) -> [a] -> [a]
    filter (Bool -> Bool
    not (Bool -> Bool) -> (Char -> Bool) -> Char -> Bool
    forall b c a. (b -> c) -> (a -> b) -> a -> c
    . Char -> Bool
    isSpace) String
    version'
                     String -> RIO env Version
    forall (m :: * -> *). MonadThrow m => String -> m Version
    parseVersionThrowing String
    version''

    -- | Generate .cabal file from package.yaml, if necessary.
    hpack
      :: (HasPantryConfig env, HasLogFunc env, HasProcessContext env)
      => Path Abs Dir
      -> RIO env ()
    hpack :: Path Abs Dir -> RIO env ()
    hpack pkgDir :: Path Abs Dir
    pkgDir = do
        Path Rel File
    packageConfigRelFile <- String -> RIO env (Path Rel File)
    forall (m :: * -> *). MonadThrow m => String -> m (Path Rel File)
    parseRelFile String
    Hpack.packageConfig
        let hpackFile :: Path Abs File
    hpackFile = Path Abs Dir
    pkgDir Path Abs Dir -> Path Rel File -> Path Abs File
    forall b t. Path b Dir -> Path Rel t -> Path b t
    Path.</> Path Rel File
    packageConfigRelFile
        RIO env Bool -> RIO env () -> RIO env ()
    forall (m :: * -> *). Monad m => m Bool -> m () -> m ()
    whenM (Path Abs File -> RIO env Bool
    forall (m :: * -> *) b. MonadIO m => Path b File -> m Bool
    doesFileExist Path Abs File
    hpackFile) (RIO env () -> RIO env ()) -> RIO env () -> RIO env ()
    forall a b. (a -> b) -> a -> b
    $ do
            Utf8Builder -> RIO env ()
    forall (m :: * -> *) env.
    (MonadIO m, MonadReader env m, HasLogFunc env, HasCallStack) =>
    Utf8Builder -> m ()
    logDebug (Utf8Builder -> RIO env ()) -> Utf8Builder -> RIO env ()
    forall a b. (a -> b) -> a -> b
    $ "Running hpack on " Utf8Builder -> Utf8Builder -> Utf8Builder
    forall a. Semigroup a => a -> a -> a
    <> String -> Utf8Builder
    forall a. IsString a => String -> a
    fromString (Path Abs File -> String
    forall b t. Path b t -> String
    toFilePath Path Abs File
    hpackFile)

            HpackExecutable
    he <- Getting HpackExecutable env HpackExecutable
    -> RIO env HpackExecutable
    forall s (m :: * -> *) a. MonadReader s m => Getting a s a -> m a
    view (Getting HpackExecutable env HpackExecutable
     -> RIO env HpackExecutable)
    -> Getting HpackExecutable env HpackExecutable
    -> RIO env HpackExecutable
    forall a b. (a -> b) -> a -> b
    $ (PantryConfig -> Const HpackExecutable PantryConfig)
    -> env -> Const HpackExecutable env
    forall env. HasPantryConfig env => Lens' env PantryConfig
    pantryConfigL((PantryConfig -> Const HpackExecutable PantryConfig)
     -> env -> Const HpackExecutable env)
    -> ((HpackExecutable -> Const HpackExecutable HpackExecutable)
        -> PantryConfig -> Const HpackExecutable PantryConfig)
    -> Getting HpackExecutable env HpackExecutable
    forall b c a. (b -> c) -> (a -> b) -> a -> c
    .(PantryConfig -> HpackExecutable)
    -> SimpleGetter PantryConfig HpackExecutable
    forall s a. (s -> a) -> SimpleGetter s a
    to PantryConfig -> HpackExecutable
    pcHpackExecutable
            case HpackExecutable
    he of
                HpackBundled -> do
                    Result
    r <- IO Result -> RIO env Result
    forall (m :: * -> *) a. MonadIO m => IO a -> m a
    liftIO (IO Result -> RIO env Result) -> IO Result -> RIO env Result
    forall a b. (a -> b) -> a -> b
    $ Options -> IO Result
    Hpack.hpackResult (Options -> IO Result) -> Options -> IO Result
    forall a b. (a -> b) -> a -> b
    $ ProgramName -> Options -> Options
    Hpack.setProgramName "stack" (Options -> Options) -> Options -> Options
    forall a b. (a -> b) -> a -> b
    $ String -> Options -> Options
    Hpack.setTarget (Path Abs File -> String
    forall b t. Path b t -> String
    toFilePath Path Abs File
    hpackFile) Options
    Hpack.defaultOptions
                    [String] -> (String -> RIO env ()) -> RIO env ()
    forall (t :: * -> *) (m :: * -> *) a b.
    (Foldable t, Monad m) =>
    t a -> (a -> m b) -> m ()
    forM_ (Result -> [String]
    Hpack.resultWarnings Result
    r) (Utf8Builder -> RIO env ()
    forall (m :: * -> *) env.
    (MonadIO m, MonadReader env m, HasLogFunc env, HasCallStack) =>
    Utf8Builder -> m ()
    logWarn (Utf8Builder -> RIO env ())
    -> (String -> Utf8Builder) -> String -> RIO env ()
    forall b c a. (b -> c) -> (a -> b) -> a -> c
    . String -> Utf8Builder
    forall a. IsString a => String -> a
    fromString)
                    let cabalFile :: Utf8Builder
    cabalFile = String -> Utf8Builder
    forall a. IsString a => String -> a
    fromString (String -> Utf8Builder)
    -> (Result -> String) -> Result -> Utf8Builder
    forall b c a. (b -> c) -> (a -> b) -> a -> c
    . Result -> String
    Hpack.resultCabalFile (Result -> Utf8Builder) -> Result -> Utf8Builder
    forall a b. (a -> b) -> a -> b
    $ Result
    r
                    case Result -> Status
    Hpack.resultStatus Result
    r of
                        Hpack.Generated -> Utf8Builder -> RIO env ()
    forall (m :: * -> *) env.
    (MonadIO m, MonadReader env m, HasLogFunc env, HasCallStack) =>
    Utf8Builder -> m ()
    logDebug (Utf8Builder -> RIO env ()) -> Utf8Builder -> RIO env ()
    forall a b. (a -> b) -> a -> b
    $ "hpack generated a modified version of " Utf8Builder -> Utf8Builder -> Utf8Builder
    forall a. Semigroup a => a -> a -> a
    <> Utf8Builder
    cabalFile
                        Hpack.OutputUnchanged -> Utf8Builder -> RIO env ()
    forall (m :: * -> *) env.
    (MonadIO m, MonadReader env m, HasLogFunc env, HasCallStack) =>
    Utf8Builder -> m ()
    logDebug (Utf8Builder -> RIO env ()) -> Utf8Builder -> RIO env ()
    forall a b. (a -> b) -> a -> b
    $ "hpack output unchanged in " Utf8Builder -> Utf8Builder -> Utf8Builder
    forall a. Semigroup a => a -> a -> a
    <> Utf8Builder
    cabalFile
                        Hpack.AlreadyGeneratedByNewerHpack -> Utf8Builder -> RIO env ()
    forall (m :: * -> *) env.
    (MonadIO m, MonadReader env m, HasLogFunc env, HasCallStack) =>
    Utf8Builder -> m ()
    logWarn (Utf8Builder -> RIO env ()) -> Utf8Builder -> RIO env ()
    forall a b. (a -> b) -> a -> b
    $
                            Utf8Builder
    cabalFile Utf8Builder -> Utf8Builder -> Utf8Builder
    forall a. Semigroup a => a -> a -> a
    <>
                            " was generated with a newer version of hpack,\n" Utf8Builder -> Utf8Builder -> Utf8Builder
    forall a. Semigroup a => a -> a -> a
    <>
                            "please upgrade and try again."
                        Hpack.ExistingCabalFileWasModifiedManually -> Utf8Builder -> RIO env ()
    forall (m :: * -> *) env.
    (MonadIO m, MonadReader env m, HasLogFunc env, HasCallStack) =>
    Utf8Builder -> m ()
    logWarn (Utf8Builder -> RIO env ()) -> Utf8Builder -> RIO env ()
    forall a b. (a -> b) -> a -> b
    $
                            Utf8Builder
    cabalFile Utf8Builder -> Utf8Builder -> Utf8Builder
    forall a. Semigroup a => a -> a -> a
    <>
                            " was modified manually. Ignoring " Utf8Builder -> Utf8Builder -> Utf8Builder
    forall a. Semigroup a => a -> a -> a
    <>
                            String -> Utf8Builder
    forall a. IsString a => String -> a
    fromString (Path Abs File -> String
    forall b t. Path b t -> String
    toFilePath Path Abs File
    hpackFile) Utf8Builder -> Utf8Builder -> Utf8Builder
    forall a. Semigroup a => a -> a -> a
    <>
                            " in favor of the cabal file.\nIf you want to use the " Utf8Builder -> Utf8Builder -> Utf8Builder
    forall a. Semigroup a => a -> a -> a
    <>
                            String -> Utf8Builder
    forall a. IsString a => String -> a
    fromString (Path Rel File -> String
    forall b t. Path b t -> String
    toFilePath (Path Abs File -> Path Rel File
    forall b. Path b File -> Path Rel File
    filename Path Abs File
    hpackFile)) Utf8Builder -> Utf8Builder -> Utf8Builder
    forall a. Semigroup a => a -> a -> a
    <>
                            " file instead of the cabal file,\n" Utf8Builder -> Utf8Builder -> Utf8Builder
    forall a. Semigroup a => a -> a -> a
    <>
                            "then please delete the cabal file."
                HpackCommand command :: String
    command ->
                    String -> RIO env () -> RIO env ()
    forall env (m :: * -> *) a.
    (HasProcessContext env, MonadReader env m, MonadIO m) =>
    String -> m a -> m a
    withWorkingDir (Path Abs Dir -> String
    forall b t. Path b t -> String
    toFilePath Path Abs Dir
    pkgDir) (RIO env () -> RIO env ()) -> RIO env () -> RIO env ()
    forall a b. (a -> b) -> a -> b
    $
                    String
    -> [String] -> (ProcessConfig () () () -> RIO env ()) -> RIO env ()
    forall env (m :: * -> *) a.
    (HasProcessContext env, HasLogFunc env, MonadReader env m,
     MonadIO m, HasCallStack) =>
    String -> [String] -> (ProcessConfig () () () -> m a) -> m a
    proc String
    command [] ProcessConfig () () () -> RIO env ()
    forall (m :: * -> *) stdin stdout stderr.
    MonadIO m =>
    ProcessConfig stdin stdout stderr -> m ()
    runProcess_