effectful-cli (empty) → 0.1.0.0
raw patch · 14 files changed
+1324/−0 lines, 14 filesdep +basedep +effectfuldep +effectful-cli
Dependencies added: base, effectful, effectful-cli, effectful-core, hs-opentelemetry-api, hs-opentelemetry-instrumentation-monad-logger, hspec, http-client-effectful, megaparsec, monad-logger, optparse-applicative, table-layout, text, time, uuid
Files
- LICENSE +674/−0
- README.md +13/−0
- effectful-cli.cabal +69/−0
- src/Data/CLI/Args.hs +64/−0
- src/Data/CLI/Class.hs +19/−0
- src/Data/CLI/Impl.hs +78/−0
- src/Data/Error/CLI.hs +20/−0
- src/Effectful/CLI.hs +20/−0
- src/Effectful/CLI/Conc.hs +53/−0
- src/Effectful/CLI/IO.hs +111/−0
- src/Effectful/CLI/Sleep.hs +39/−0
- src/Effectful/CLI/Time.hs +35/−0
- src/Effectful/Logger.hs +62/−0
- test/Spec.hs +67/−0
+ LICENSE view
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+ README.md view
@@ -0,0 +1,13 @@+# effectful-cli++Small helpers for writing CLIs with [effectful](https://hackage.haskell.org/package/effectful):+effect constraints, concurrency, prompts, sleep/time, optparse-applicative helpers and a+[monad-logger](https://hackage.haskell.org/package/monad-logger) bridge (stderr or OpenTelemetry).++Port of the private `polysemy-cli` package to effectful.++## Build++```sh+stack build --test+```
+ effectful-cli.cabal view
@@ -0,0 +1,69 @@+cabal-version: 1.12++-- This file has been generated from package.yaml by hpack version 0.39.6.+--+-- see: https://github.com/sol/hpack++name: effectful-cli+version: 0.1.0.0+synopsis: CLI helpers for the effectful ecosystem+description: Please see the README.+category: CLI+author: drlkf+maintainer: drlkf <drlkf@drlkf.net>+copyright: 2026 drlkf+license: GPL-3+license-file: LICENSE+build-type: Simple+extra-source-files:+ README.md++library+ exposed-modules:+ Data.CLI.Args+ Data.CLI.Class+ Data.CLI.Impl+ Data.Error.CLI+ Effectful.CLI+ Effectful.CLI.Conc+ Effectful.CLI.IO+ Effectful.CLI.Sleep+ Effectful.CLI.Time+ Effectful.Logger+ other-modules:+ Paths_effectful_cli+ hs-source-dirs:+ src+ ghc-options: -Wall -Wextra -Wcompat -Widentities -Wincomplete-record-updates -Wincomplete-uni-patterns -Wmissing-export-lists -Wmissing-home-modules -Wpartial-fields -Wredundant-constraints+ build-depends:+ base >=4.20 && <4.22+ , effectful >=2.6.1 && <2.8+ , effectful-core >=2.6.1 && <2.8+ , hs-opentelemetry-api ==1.0.*+ , hs-opentelemetry-instrumentation-monad-logger ==1.0.*+ , http-client-effectful ==1.0.*+ , megaparsec ==9.7.*+ , monad-logger >=0.3.42 && <0.4+ , optparse-applicative >=0.18.1 && <0.20+ , table-layout ==1.0.*+ , text ==2.1.*+ , time >=1.12.2 && <1.15+ , uuid >=1.3.16 && <1.4+ default-language: GHC2021++test-suite effectful-cli-test+ type: exitcode-stdio-1.0+ main-is: Spec.hs+ other-modules:+ Paths_effectful_cli+ hs-source-dirs:+ test+ ghc-options: -Wall -Wextra -Wcompat -Widentities -Wincomplete-record-updates -Wincomplete-uni-patterns -Wmissing-export-lists -Wmissing-home-modules -Wpartial-fields -Wredundant-constraints -threaded -rtsopts -with-rtsopts=-N+ build-depends:+ base >=4.20 && <4.22+ , effectful+ , effectful-cli+ , hspec ==2.11.*+ , megaparsec+ , optparse-applicative+ default-language: GHC2021
+ src/Data/CLI/Args.hs view
@@ -0,0 +1,64 @@+module Data.CLI.Args (+ CLIArgs (..),+ getLogLevel,+ showVersion,+ versionOrCommand,+ argParser,+) where++import Control.Monad.Logger (LogLevel (..))+import Data.List (intercalate)+import Data.Maybe (fromMaybe)+import Options.Applicative++-- | @since 0.1.0.0+data CLIArgs c = CLIArgs+ { _logLevel :: Maybe LogLevel+ , _debug :: Bool+ , _autoAccept :: Bool+ , _autoDecline :: Bool+ , _config :: Maybe FilePath+ , _command :: Either () c+ }++logLevels :: [(String, LogLevel)]+logLevels =+ [("debug", LevelDebug), ("info", LevelInfo), ("warn", LevelWarn), ("error", LevelError)]++-- | @since 0.1.0.0+getLogLevel :: CLIArgs c -> LogLevel+getLogLevel a = fromMaybe (if _debug a then LevelDebug else LevelInfo) (_logLevel a)++-- | @since 0.1.0.0+showVersion :: String -> IO ()+showVersion = putStrLn++-- | @since 0.1.0.0+versionOrCommand :: String -> CLIArgs c -> (c -> IO ()) -> IO ()+versionOrCommand v a run = either (const (showVersion v)) run (_command a)++-- | @since 0.1.0.0+argParser :: Parser c -> Parser (CLIArgs c)+argParser cmdParser =+ CLIArgs+ <$> optional+ ( option+ (maybeReader (`lookup` logLevels))+ ( short 'l'+ <> long "log-level"+ <> metavar "LEVEL"+ <> help ("Log level: " <> intercalate ", " (fmap fst logLevels))+ )+ )+ <*> switch (short 'd' <> long "debug" <> help "Enable debug output (overruled by -l)")+ <*> switch (short 'y' <> long "yes" <> help "Auto-accept all prompts")+ <*> switch (short 'n' <> long "no" <> help "Auto-decline all prompts (overrides -y/--yes)")+ <*> optional+ ( strOption+ (short 'c' <> long "config" <> metavar "PATH" <> help "Path to the configuration file")+ )+ <*> ( Left+ <$> flag' () (short 'v' <> long "version" <> help "display version information")+ <|> Right+ <$> cmdParser+ )
+ src/Data/CLI/Class.hs view
@@ -0,0 +1,19 @@+{-# LANGUAGE FunctionalDependencies #-}++module Data.CLI.Class (+ CLIConfig (..),+ Command (..),+) where++import Effectful (Eff)+import Effectful.CLI (CLIEffects)+import Options.Applicative (Parser)++class CLIConfig a where+ autoAccept, autoDecline :: a -> Bool++class Command c e a | a -> c e where+ cmdname :: a -> String+ doc :: a -> String+ parser :: a -> Parser a+ runner :: CLIEffects c e es => a -> Eff es ()
+ src/Data/CLI/Impl.hs view
@@ -0,0 +1,78 @@+module Data.CLI.Impl (+ unboundEnumError,+ fromParsec,+ argOrOpt,+ noArgs,+ forceSwitch,+ noopSwitch,+ uuidArg,+ mkCommand,+ mkCommands,+ usage,+) where++import Data.Bifunctor (first)+import Data.CLI.Class (Command (..))+import Data.Char (toUpper)+import Data.List (sortOn)+import Data.UUID (UUID)+import Data.UUID qualified as UUID+import Data.Void (Void)+import Options.Applicative+import Text.Megaparsec (Parsec, eof, errorBundlePretty, runParser)+import Text.Printf (printf)++-- | @since 0.1.0.0+unboundEnumError :: String -> a+unboundEnumError name = error (printf "%s.Enum: succ invoked on maxBound" name)++-- | @since 0.1.0.0+fromParsec :: String -> Parsec Void String a -> ReadM a+fromParsec name p = eitherReader (first errorBundlePretty . runParser (p <* eof) name)++-- | @since 0.1.0.0+argOrOpt+ :: String+ -> Char+ -> String+ -> Either (Parsec Void String a) (ReadM a)+ -> [String]+ -> Parser a+argOrOpt name c h p cs =+ argument r (metavar var <> completeWith cs)+ <|> option r (short c <> long name <> help h <> metavar var <> completeWith cs)+ where+ var = fmap toUpper name+ r = either (fromParsec name) id p++-- | @since 0.1.0.0+noArgs :: a -> Parser a+noArgs = pure++-- | @since 0.1.0.0+forceSwitch :: Parser Bool+forceSwitch = switch (short 'f' <> long "force" <> help "force unsafe behavior")++-- | @since 0.1.0.0+noopSwitch :: Parser Bool+noopSwitch = switch (short 'n' <> long "noop" <> help "do not perform any real action")++-- | @since 0.1.0.0+uuidArg :: Parser UUID+uuidArg = argOrOpt "uuid" 'u' "target uuid" (Right (maybeReader UUID.fromString)) []++-- | @since 0.1.0.0+mkCommand :: Command c e a => a -> Mod CommandFields a+mkCommand a = command (cmdname a) (info (parser a) (progDesc (doc a)))++-- | @since 0.1.0.0+mkCommands+ :: Bounded a => Command c e a => Command c e b => Enum a => (a -> b) -> Mod CommandFields b+mkCommands f = foldMap (mkCommand . f) (sortOn cmdname [minBound ..])++-- | @since 0.1.0.0+usage :: String -> String -> String -> Parser a -> ParserInfo a+usage name version hdr p =+ info+ (p <**> helper)+ (fullDesc <> progDesc hdr <> header (printf "%s - %s - version %s" name hdr version))
+ src/Data/Error/CLI.hs view
@@ -0,0 +1,20 @@+module Data.Error.CLI (+ CLIError (..),+ displayCLIError,+) where++-- | @since 0.1.0.0+data CLIError+ = InputError String+ | NotFoundError String+ | NotImplemented String+ | UserCanceled (Maybe String)+ deriving (Eq, Show)++-- | @since 0.1.0.0+displayCLIError :: CLIError -> String+displayCLIError (InputError s) = "input error: " <> s+displayCLIError (NotFoundError s) = "not found: " <> s+displayCLIError (NotImplemented s) = "not implemented: " <> s+displayCLIError (UserCanceled Nothing) = "user canceled"+displayCLIError (UserCanceled (Just s)) = "user canceled: " <> s
+ src/Effectful/CLI.hs view
@@ -0,0 +1,20 @@+module Effectful.CLI (+ CLIEffects,+) where++import Data.Error.CLI (CLIError)+import Effectful (IOE, (:>))+import Effectful.Error.Static (Error)+import Effectful.HttpClient (HttpClient)+import Effectful.Logger (Logger)+import Effectful.Reader.Static (Reader)++-- | @since 0.1.0.0+type CLIEffects c e es =+ ( IOE :> es+ , Reader c :> es+ , Error CLIError :> es+ , Error e :> es+ , Logger :> es+ , HttpClient :> es+ )
+ src/Effectful/CLI/Conc.hs view
@@ -0,0 +1,53 @@+module Effectful.CLI.Conc (+ concurrently,+ concurrently_,+ runConcurrently,+ runConcurrently_,+ mapConcurrently,+ mapConcurrently_,+ forConcurrently,+ forConcurrently_,+ batchConcurrently,+ batchConcurrently_,+ batchConcurrentlyWithIndex,+ batchConcurrentlyWithIndex_,+) where++import Effectful (Eff, (:>))+import Effectful.Concurrent.Async (+ Concurrent,+ concurrently,+ concurrently_,+ forConcurrently,+ forConcurrently_,+ mapConcurrently,+ mapConcurrently_,+ pooledMapConcurrentlyN,+ pooledMapConcurrentlyN_,+ )++-- | @since 0.1.0.0+runConcurrently :: Concurrent :> es => Traversable t => t (Eff es a) -> Eff es (t a)+runConcurrently = mapConcurrently id++-- | @since 0.1.0.0+runConcurrently_ :: Concurrent :> es => Foldable t => t (Eff es a) -> Eff es ()+runConcurrently_ = mapConcurrently_ id++-- | @since 0.1.0.0+batchConcurrently :: Concurrent :> es => Int -> (a -> Eff es b) -> [a] -> Eff es [b]+batchConcurrently = pooledMapConcurrentlyN++-- | @since 0.1.0.0+batchConcurrently_ :: Concurrent :> es => Int -> (a -> Eff es b) -> [a] -> Eff es ()+batchConcurrently_ = pooledMapConcurrentlyN_++-- | @since 0.1.0.0+batchConcurrentlyWithIndex+ :: Concurrent :> es => Int -> (Int -> a -> Eff es b) -> [a] -> Eff es [b]+batchConcurrentlyWithIndex n f = batchConcurrently n (uncurry f) . zip [1 ..]++-- | @since 0.1.0.0+batchConcurrentlyWithIndex_+ :: Concurrent :> es => Int -> (Int -> a -> Eff es b) -> [a] -> Eff es ()+batchConcurrentlyWithIndex_ n f = batchConcurrently_ n (uncurry f) . zip [1 ..]
+ src/Effectful/CLI/IO.hs view
@@ -0,0 +1,111 @@+{-# LANGUAGE AllowAmbiguousTypes #-}++module Effectful.CLI.IO (+ printOutput,+ printOutputLn,+ printError,+ printLines,+ prompt,+ prompt',+ askForConfirm,+ withConfirm,+ autoOpen,+ chooseItem,+ resolveIndex,+) where++import Control.Monad (unless, void, when)+import Data.CLI.Class (CLIConfig (..))+import Data.Error.CLI (CLIError (..))+import Data.Functor (($>))+import Data.Maybe (fromMaybe)+import Data.Void (Void)+import Effectful (Eff, IOE, liftIO, (:>))+import Effectful.Error.Static (Error, throwError)+import Effectful.Process (Process, callProcess)+import Effectful.Reader.Static (Reader, ask)+import System.IO (hFlush, hPutStr, stderr)+import Text.Layout.Table (columnHeaderTableS, def, rowsG, tableString, titlesH, unicodeS)+import Text.Megaparsec (Parsec, eof, errorBundlePretty, runParser, (<|>))+import Text.Megaparsec.Char (string')+import Text.Megaparsec.Char.Lexer (decimal, signed)+import Text.Printf (printf)++-- | @since 0.1.0.0+printOutput :: IOE :> es => String -> Eff es ()+printOutput = liftIO . putStr++-- | @since 0.1.0.0+printOutputLn :: IOE :> es => String -> Eff es ()+printOutputLn = liftIO . putStrLn++-- | @since 0.1.0.0+printError :: IOE :> es => String -> Eff es ()+printError = liftIO . hPutStr stderr++-- | @since 0.1.0.0+printLines :: IOE :> es => [String] -> Eff es ()+printLines = printOutput . unlines++-- | @since 0.1.0.0+prompt :: IOE :> es => Maybe String -> Eff es String+prompt p = liftIO $ do+ hPutStr stderr (fromMaybe "" p <> "> ")+ hFlush stderr+ getLine++-- | @since 0.1.0.0+prompt'+ :: Error CLIError :> es => IOE :> es => Maybe String -> Parsec Void String a -> Eff es a+prompt' p parser =+ prompt p+ >>= either (throwError . InputError . errorBundlePretty) pure . runParser parser "prompt"++-- | @since 0.1.0.0+askForConfirm :: Error CLIError :> es => IOE :> es => Eff es Bool+askForConfirm = prompt' (Just "proceed ?") yesOrNo+ where+ yes = void (string' "y" <|> string' "yes") <|> eof+ yesOrNo = (yes $> True) <|> pure False++-- | Ambiguous in @c@: call as @withConfirm @MyConfig@.+--+-- @since 0.1.0.0+withConfirm+ :: forall c es a+ . CLIConfig c => Error CLIError :> es => IOE :> es => Reader c :> es => Eff es a -> Eff es a+withConfirm action = do+ c <- ask @c+ when (autoDecline c) $ throwError (UserCanceled (Just "auto-declined"))+ unless (autoAccept c) $ do+ ok <- askForConfirm+ unless ok $ throwError (UserCanceled Nothing)+ action++-- | @since 0.1.0.0+autoOpen :: Process :> es => String -> Eff es ()+autoOpen arg = callProcess "xdg-open" [arg]++-- | @since 0.1.0.0+chooseItem+ :: Error CLIError :> es+ => IOE :> es+ => String -> [String] -> (a -> [String]) -> [a] -> Eff es a+chooseItem name _ _ [] = throwError (NotFoundError ("no item found for " <> name))+chooseItem _ _ _ [x] = pure x+chooseItem name headers row xs = do+ let hs = "#" : headers+ rows = zipWith (\i x -> show i : row x) [1 :: Int ..] xs+ printOutputLn+ (tableString (columnHeaderTableS (fmap (const def) hs) unicodeS (titlesH hs) [rowsG rows]))+ i <- prompt' (Just name) (signed (pure ()) decimal)+ either throwError (pure . (xs !!)) (resolveIndex (length xs) i)++-- | Turn a 1-based (or negative, from the end) user index into a 0-based one.+--+-- @since 0.1.0.0+resolveIndex :: Int -> Int -> Either CLIError Int+resolveIndex len i+ | i >= 1 && i <= len = Right (i - 1)+ | i <= -1 && i >= -len = Right (len + i)+ | otherwise = Left (InputError (printf "index %d out of bounds" i))
+ src/Effectful/CLI/Sleep.hs view
@@ -0,0 +1,39 @@+module Effectful.CLI.Sleep (+ msleep,+ sleep,+ sleepUntil,+) where++import Control.Concurrent (threadDelay)+import Control.Monad.Logger (logDebugN, logInfoN)+import Data.Text qualified as T+import Data.Time (+ LocalTime,+ defaultTimeLocale,+ diffLocalTime,+ formatTime,+ nominalDiffTimeToSeconds,+ )+import Effectful (Eff, IOE, liftIO, (:>))+import Effectful.CLI.Time (getLocalTime)+import Effectful.Logger (Logger)+import Text.Printf (printf)++-- | @since 0.1.0.0+msleep :: IOE :> es => Logger :> es => Int -> Eff es ()+msleep n = do+ logDebugN (T.pack (printf "sleeping for %dms" n))+ liftIO (threadDelay (n * 1000))++-- | @since 0.1.0.0+sleep :: IOE :> es => Logger :> es => Int -> Eff es ()+sleep n = do+ logDebugN (T.pack (printf "sleeping for %ds" n))+ liftIO (threadDelay (n * 1000000))++-- | @since 0.1.0.0+sleepUntil :: IOE :> es => Logger :> es => LocalTime -> Eff es ()+sleepUntil t = do+ logInfoN (T.pack ("sleeping until " <> formatTime defaultTimeLocale "%R" t))+ now <- getLocalTime+ sleep . ceiling . nominalDiffTimeToSeconds $ diffLocalTime t now
+ src/Effectful/CLI/Time.hs view
@@ -0,0 +1,35 @@+module Effectful.CLI.Time (+ getLocalTimeIO,+ getBeginningOfDayIO,+ getBeginningOfWeekIO,+ getLocalTime,+ getBeginningOfDay,+ getBeginningOfWeek,+) where++import Data.Time+import Effectful (Eff, IOE, liftIO, (:>))++-- | @since 0.1.0.0+getLocalTimeIO :: IO LocalTime+getLocalTimeIO = utcToLocalTime <$> getCurrentTimeZone <*> getCurrentTime++-- | @since 0.1.0.0+getBeginningOfDayIO :: IO UTCTime+getBeginningOfDayIO = (\now -> now{utctDayTime = 0}) <$> getCurrentTime++-- | @since 0.1.0.0+getBeginningOfWeekIO :: IO UTCTime+getBeginningOfWeekIO = (\now -> UTCTime (weekFirstDay Monday (utctDay now)) 0) <$> getCurrentTime++-- | @since 0.1.0.0+getLocalTime :: IOE :> es => Eff es LocalTime+getLocalTime = liftIO getLocalTimeIO++-- | @since 0.1.0.0+getBeginningOfDay :: IOE :> es => Eff es UTCTime+getBeginningOfDay = liftIO getBeginningOfDayIO++-- | @since 0.1.0.0+getBeginningOfWeek :: IOE :> es => Eff es UTCTime+getBeginningOfWeek = liftIO getBeginningOfWeekIO
+ src/Effectful/Logger.hs view
@@ -0,0 +1,62 @@+{-# LANGUAGE DataKinds #-}+{-# LANGUAGE TypeFamilies #-}+{-# LANGUAGE UndecidableInstances #-}+{-# OPTIONS_GHC -Wno-orphans #-}++-- | monad-logger bridge: a static effect holding a log callback, plus a+-- 'MonadLogger' instance for 'Eff' so the usual @logInfoN@ etc. work.+module Effectful.Logger (+ Logger,+ LogFunc,+ runLogger,+ runStderrLogger,+ runOTelLogger,+) where++import Control.Monad.Logger (+ Loc,+ LogLevel,+ LogSource,+ LogStr,+ MonadLogger (..),+ defaultOutput,+ toLogStr,+ )+import Effectful (Dispatch (..), DispatchOf, Eff, Effect, IOE, (:>))+import Effectful.Dispatch.Static (+ SideEffects (..),+ StaticRep,+ evalStaticRep,+ getStaticRep,+ unsafeEff_,+ )+import OpenTelemetry.Instrumentation.MonadLogger qualified as OTel+import OpenTelemetry.Log.Core qualified as OTel+import System.IO (stderr)++-- | @since 0.1.0.0+type LogFunc = Loc -> LogSource -> LogLevel -> LogStr -> IO ()++-- | @since 0.1.0.0+data Logger :: Effect++type instance DispatchOf Logger = Static WithSideEffects++newtype instance StaticRep Logger = Logger LogFunc++-- | @since 0.1.0.0+runLogger :: IOE :> es => LogFunc -> Eff (Logger : es) a -> Eff es a+runLogger = evalStaticRep . Logger++-- | @since 0.1.0.0+runStderrLogger :: IOE :> es => Eff (Logger : es) a -> Eff es a+runStderrLogger = runLogger (defaultOutput stderr)++-- | @since 0.1.0.0+runOTelLogger :: IOE :> es => OTel.Logger -> Eff (Logger : es) a -> Eff es a+runOTelLogger = runLogger . OTel.makeOTelLogCallback++instance Logger :> es => MonadLogger (Eff es) where+ monadLoggerLog loc src lvl msg = do+ Logger f <- getStaticRep+ unsafeEff_ $ f loc src lvl (toLogStr msg)
+ test/Spec.hs view
@@ -0,0 +1,67 @@+import Data.CLI.Impl (fromParsec)+import Data.Error.CLI (CLIError (..), displayCLIError)+import Effectful (runEff)+import Effectful.CLI.Conc (batchConcurrentlyWithIndex)+import Effectful.CLI.IO (resolveIndex)+import Effectful.Concurrent (runConcurrent)+import Options.Applicative+import Test.Hspec+import Text.Megaparsec.Char (string)++isInputError :: Either CLIError a -> Bool+isInputError (Left (InputError _)) = True+isInputError _ = False++main :: IO ()+main = hspec $ do+ describe "batchConcurrentlyWithIndex" $ do+ let xs = "abcde"+ expected = zip [1 ..] xs+ run n = runEff . runConcurrent $ batchConcurrentlyWithIndex n (curry pure) xs++ it "pairs 1-based indices with elements" $+ run 10 `shouldReturn` expected++ it "works with a batch smaller than the list" $+ run 2 `shouldReturn` expected++ describe "resolveIndex" $ do+ let len = 4+ it "resolves positive bounds" $ do+ resolveIndex len 1 `shouldBe` Right 0+ resolveIndex len len `shouldBe` Right (len - 1)++ it "resolves negative bounds" $ do+ resolveIndex len (-1) `shouldBe` Right (len - 1)+ resolveIndex len (-len) `shouldBe` Right 0++ it "rejects out of bounds" $+ fmap (isInputError . resolveIndex len) [0, len + 1, -(len + 1)]+ `shouldBe` [True, True, True]++ describe "displayCLIError"+ $ it "renders every constructor"+ $ fmap+ displayCLIError+ [ InputError "a"+ , NotFoundError "b"+ , NotImplemented "c"+ , UserCanceled Nothing+ , UserCanceled (Just "d")+ ]+ `shouldBe` [ "input error: a"+ , "not found: b"+ , "not implemented: c"+ , "user canceled"+ , "user canceled: d"+ ]++ describe "fromParsec" $ do+ let p = info (argument (fromParsec "word" (string "ok")) mempty) mempty+ parse = getParseResult . execParserPure defaultPrefs p++ it "accepts a valid input" $+ parse ["ok"] `shouldBe` Just "ok"++ it "rejects an invalid input" $+ parse ["ko"] `shouldBe` Nothing