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48aee1e76c
ghcup-hs/app/ghcup/BrickMain.hs
Julian Ospald 48aee1e76c
[WIP] Prototype of recording installed files 
This also installs makefile based build system via DESTDIR
into a temporary directory and then merges it into the filesystem.
2022-05-13 00:46:47 +02:00

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{-# LANGUAGE CPP #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE TypeApplications #-}
{-# LANGUAGE RankNTypes #-}
module BrickMain where
import GHCup
import GHCup.Download
import GHCup.Errors
import GHCup.Types.Optics ( getDirs )
import GHCup.Types hiding ( LeanAppState(..) )
import GHCup.Utils
import GHCup.Utils.Logger
import GHCup.Utils.Prelude ( decUTF8Safe )
import GHCup.Utils.File
import Brick
import Brick.Widgets.Border
import Brick.Widgets.Border.Style
import Brick.Widgets.Center
import Brick.Widgets.List ( listSelectedFocusedAttr
, listSelectedAttr
, listAttr
)
import Codec.Archive
import Control.Exception.Safe
#if !MIN_VERSION_base(4,13,0)
import Control.Monad.Fail ( MonadFail )
#endif
import Control.Monad.Reader
import Control.Monad.Trans.Except
import Control.Monad.Trans.Resource
import Data.Bool
import Data.Functor
import Data.List
import Data.Maybe
import Data.IORef
import Data.Vector ( Vector
, (!?)
)
import Data.Versions hiding ( str )
import Haskus.Utils.Variant.Excepts
import Prelude hiding ( appendFile )
import System.Directory ( canonicalizePath )
import System.FilePath
import System.Exit
import System.IO.Unsafe
import Text.PrettyPrint.HughesPJClass ( prettyShow )
import URI.ByteString
import qualified Data.Text as T
import qualified Graphics.Vty as Vty
import qualified Data.Vector as V
import System.Environment (getExecutablePath)
import qualified System.Posix.Process as SPP
hiddenTools :: [Tool]
hiddenTools = []
data BrickData = BrickData
{ lr :: [ListResult]
}
deriving Show
data BrickSettings = BrickSettings
{ showAllVersions :: Bool
, showAllTools :: Bool
}
deriving Show
data BrickInternalState = BrickInternalState
{ clr :: Vector ListResult
, ix :: Int
}
deriving Show
data BrickState = BrickState
{ appData :: BrickData
, appSettings :: BrickSettings
, appState :: BrickInternalState
, appKeys :: KeyBindings
}
deriving Show
keyHandlers :: KeyBindings
-> [ ( Vty.Key
, BrickSettings -> String
, BrickState -> EventM n (Next BrickState)
)
]
keyHandlers KeyBindings {..} =
[ (bQuit, const "Quit" , halt)
, (bInstall, const "Install" , withIOAction install')
, (bUninstall, const "Uninstall", withIOAction del')
, (bSet, const "Set" , withIOAction ((liftIO .) . set'))
, (bChangelog, const "ChangeLog", withIOAction changelog')
, ( bShowAllVersions
, \BrickSettings {..} ->
if showAllVersions then "Don't show all versions" else "Show all versions"
, hideShowHandler (not . showAllVersions) showAllTools
)
, ( bShowAllTools
, \BrickSettings {..} ->
if showAllTools then "Don't show all tools" else "Show all tools"
, hideShowHandler showAllVersions (not . showAllTools)
)
, (bUp, const "Up", \BrickState {..} -> continue BrickState{ appState = moveCursor 1 appState Up, .. })
, (bDown, const "Down", \BrickState {..} -> continue BrickState{ appState = moveCursor 1 appState Down, .. })
]
where
hideShowHandler f p BrickState{..} =
let newAppSettings = appSettings { showAllVersions = f appSettings , showAllTools = p appSettings }
newInternalState = constructList appData newAppSettings (Just appState)
in continue (BrickState appData newAppSettings newInternalState appKeys)
showKey :: Vty.Key -> String
showKey (Vty.KChar c) = [c]
showKey Vty.KUp = "↑"
showKey Vty.KDown = "↓"
showKey key = tail (show key)
ui :: AttrMap -> BrickState -> Widget String
ui dimAttrs BrickState{ appSettings = as@BrickSettings{}, ..}
= padBottom Max
( withBorderStyle unicode
$ borderWithLabel (str "GHCup")
(center (header <=> hBorder <=> renderList' appState))
)
<=> footer
where
footer =
withAttr "help"
. txtWrap
. T.pack
. foldr1 (\x y -> x <> " " <> y)
. fmap (\(key, s, _) -> showKey key <> ":" <> s as)
$ keyHandlers appKeys
header =
minHSize 2 emptyWidget
<+> padLeft (Pad 2) (minHSize 6 $ str "Tool")
<+> minHSize 15 (str "Version")
<+> padLeft (Pad 1) (minHSize 25 $ str "Tags")
<+> padLeft (Pad 5) (str "Notes")
renderList' = withDefAttr listAttr . drawListElements renderItem True
renderItem _ b listResult@ListResult{..} =
let marks = if
| lSet -> (withAttr "set" $ str "✔✔")
| lInstalled -> (withAttr "installed" $ str "✓ ")
| otherwise -> (withAttr "not-installed" $ str "✗ ")
ver = case lCross of
Nothing -> T.unpack . prettyVer $ lVer
Just c -> T.unpack (c <> "-" <> prettyVer lVer)
dim
| lNoBindist && not lInstalled
&& not b -- TODO: overloading dim and active ignores active
-- so we hack around it here
= updateAttrMap (const dimAttrs) . withAttr "no-bindist"
| otherwise = id
hooray
| elem Latest lTag && not lInstalled =
withAttr "hooray"
| otherwise = id
active = if b then putCursor "GHCup" (Location (0,0)) . forceAttr "active" else id
in hooray $ active $ dim
( marks
<+> padLeft (Pad 2)
( minHSize 6
(printTool lTool)
)
<+> minHSize 15 (str ver)
<+> (let l = catMaybes . fmap printTag $ sort lTag
in padLeft (Pad 1) $ minHSize 25 $ if null l
then emptyWidget
else foldr1 (\x y -> x <+> str "," <+> y) l
)
<+> padLeft (Pad 5)
( let notes = printNotes listResult
in if null notes
then emptyWidget
else foldr1 (\x y -> x <+> str "," <+> y) notes
)
<+> vLimit 1 (fill ' ')
)
printTag Recommended = Just $ withAttr "recommended" $ str "recommended"
printTag Latest = Just $ withAttr "latest" $ str "latest"
printTag Prerelease = Just $ withAttr "prerelease" $ str "prerelease"
printTag (Base pvp'') = Just $ str ("base-" ++ T.unpack (prettyPVP pvp''))
printTag Old = Nothing
printTag (UnknownTag t) = Just $ str t
printTool Cabal = str "cabal"
printTool GHC = str "GHC"
printTool GHCup = str "GHCup"
printTool HLS = str "HLS"
printTool Stack = str "Stack"
printNotes ListResult {..} =
(if hlsPowered then [withAttr "hls-powered" $ str "hls-powered"] else mempty
)
++ (if fromSrc then [withAttr "compiled" $ str "compiled"] else mempty)
++ (if lStray then [withAttr "stray" $ str "stray"] else mempty)
-- | Draws the list elements.
--
-- Evaluates the underlying container up to, and a bit beyond, the
-- selected element. The exact amount depends on available height
-- for drawing and 'listItemHeight'. At most, it will evaluate up to
-- element @(i + h + 1)@ where @i@ is the selected index and @h@ is the
-- available height.
drawListElements :: (Int -> Bool -> ListResult -> Widget String)
-> Bool
-> BrickInternalState
-> Widget String
drawListElements drawElem foc is@(BrickInternalState clr _) =
Widget Greedy Greedy $
let
es = clr
listSelected = fmap fst $ listSelectedElement' is
drawnElements = flip V.imap es $ \i' e ->
let addSeparator w = case es !? (i' - 1) of
Just e' | lTool e' /= lTool e ->
hBorder <=> w
_ -> w
isSelected = Just i' == listSelected
elemWidget = drawElem i' isSelected e
selItemAttr = if foc
then withDefAttr listSelectedFocusedAttr
else withDefAttr listSelectedAttr
makeVisible = if isSelected then visible . selItemAttr else id
in addSeparator $ makeVisible elemWidget
in render
$ viewport "GHCup" Vertical
$ vBox
$ V.toList drawnElements
minHSize :: Int -> Widget n -> Widget n
minHSize s' = hLimit s' . vLimit 1 . (<+> fill ' ')
app :: AttrMap -> AttrMap -> App BrickState e String
app attrs dimAttrs =
App { appDraw = \st -> [ui dimAttrs st]
, appHandleEvent = eventHandler
, appStartEvent = return
, appAttrMap = const attrs
, appChooseCursor = showFirstCursor
}
defaultAttributes :: Bool -> AttrMap
defaultAttributes no_color = attrMap
Vty.defAttr
[ ("active" , Vty.defAttr `withBackColor` Vty.blue)
, ("not-installed", Vty.defAttr `withForeColor` Vty.red)
, ("set" , Vty.defAttr `withForeColor` Vty.green)
, ("installed" , Vty.defAttr `withForeColor` Vty.green)
, ("recommended" , Vty.defAttr `withForeColor` Vty.green)
, ("hls-powered" , Vty.defAttr `withForeColor` Vty.green)
, ("latest" , Vty.defAttr `withForeColor` Vty.yellow)
, ("prerelease" , Vty.defAttr `withForeColor` Vty.red)
, ("compiled" , Vty.defAttr `withForeColor` Vty.blue)
, ("stray" , Vty.defAttr `withForeColor` Vty.blue)
, ("help" , Vty.defAttr `withStyle` Vty.italic)
, ("hooray" , Vty.defAttr `withForeColor` Vty.brightWhite)
]
where
withForeColor | no_color = const
| otherwise = Vty.withForeColor
withBackColor | no_color = \attr _ -> attr `Vty.withStyle` Vty.reverseVideo
| otherwise = Vty.withBackColor
withStyle = Vty.withStyle
dimAttributes :: Bool -> AttrMap
dimAttributes no_color = attrMap
(Vty.defAttr `Vty.withStyle` Vty.dim)
[ ("active" , Vty.defAttr `withBackColor` Vty.blue) -- has no effect ??
, ("no-bindist", Vty.defAttr `Vty.withStyle` Vty.dim)
]
where
withBackColor | no_color = \attr _ -> attr `Vty.withStyle` Vty.reverseVideo
| otherwise = Vty.withBackColor
eventHandler :: BrickState -> BrickEvent n e -> EventM n (Next BrickState)
eventHandler st@BrickState{..} ev = do
AppState { keyBindings = kb } <- liftIO $ readIORef settings'
case ev of
(MouseDown _ Vty.BScrollUp _ _) ->
continue (BrickState { appState = moveCursor 1 appState Up, .. })
(MouseDown _ Vty.BScrollDown _ _) ->
continue (BrickState { appState = moveCursor 1 appState Down, .. })
(VtyEvent (Vty.EvResize _ _)) -> continue st
(VtyEvent (Vty.EvKey Vty.KUp _)) ->
continue BrickState{ appState = moveCursor 1 appState Up, .. }
(VtyEvent (Vty.EvKey Vty.KDown _)) ->
continue BrickState{ appState = moveCursor 1 appState Down, .. }
(VtyEvent (Vty.EvKey key _)) ->
case find (\(key', _, _) -> key' == key) (keyHandlers kb) of
Nothing -> continue st
Just (_, _, handler) -> handler st
_ -> continue st
moveCursor :: Int -> BrickInternalState -> Direction -> BrickInternalState
moveCursor steps ais@BrickInternalState{..} direction =
let newIx = if direction == Down then ix + steps else ix - steps
in case clr !? newIx of
Just _ -> BrickInternalState { ix = newIx, .. }
Nothing -> ais
-- | Suspend the current UI and run an IO action in terminal. If the
-- IO action returns a Left value, then it's thrown as userError.
withIOAction :: (BrickState
-> (Int, ListResult)
-> ReaderT AppState IO (Either String a))
-> BrickState
-> EventM n (Next BrickState)
withIOAction action as = case listSelectedElement' (appState as) of
Nothing -> continue as
Just (ix, e) -> do
suspendAndResume $ do
settings <- readIORef settings'
flip runReaderT settings $ action as (ix, e) >>= \case
Left err -> liftIO $ putStrLn ("Error: " <> err)
Right _ -> liftIO $ putStrLn "Success"
getAppData Nothing >>= \case
Right data' -> do
putStrLn "Press enter to continue"
_ <- getLine
pure (updateList data' as)
Left err -> throwIO $ userError err
-- | Update app data and list internal state based on new evidence.
-- This synchronises @BrickInternalState@ with @BrickData@
-- and @BrickSettings@.
updateList :: BrickData -> BrickState -> BrickState
updateList appD BrickState{..} =
let newInternalState = constructList appD appSettings (Just appState)
in BrickState { appState = newInternalState
, appData = appD
, appSettings = appSettings
, appKeys = appKeys
}
constructList :: BrickData
-> BrickSettings
-> Maybe BrickInternalState
-> BrickInternalState
constructList appD appSettings =
replaceLR (filterVisible (showAllVersions appSettings)
(showAllTools appSettings))
(lr appD)
listSelectedElement' :: BrickInternalState -> Maybe (Int, ListResult)
listSelectedElement' BrickInternalState{..} = fmap (ix, ) $ clr !? ix
selectLatest :: Vector ListResult -> Int
selectLatest = fromMaybe 0 . V.findIndex (\ListResult {..} -> lTool == GHC && Latest `elem` lTag)
-- | Replace the @appState@ or construct it based on a filter function
-- and a new @[ListResult]@ evidence.
-- When passed an existing @appState@, tries to keep the selected element.
replaceLR :: (ListResult -> Bool)
-> [ListResult]
-> Maybe BrickInternalState
-> BrickInternalState
replaceLR filterF lr s =
let oldElem = s >>= listSelectedElement'
newVec = V.fromList . filter filterF $ lr
newSelected =
case oldElem >>= \(_, oldE) -> V.findIndex (toolEqual oldE) newVec of
Just ix -> ix
Nothing -> selectLatest newVec
in BrickInternalState newVec newSelected
where
toolEqual e1 e2 =
lTool e1 == lTool e2 && lVer e1 == lVer e2 && lCross e1 == lCross e2
filterVisible :: Bool -> Bool -> ListResult -> Bool
filterVisible v t e | lInstalled e = True
| v
, not t
, lTool e `notElem` hiddenTools = True
| not v
, t
, Old `notElem` lTag e = True
| v
, t = True
| otherwise = (Old `notElem` lTag e) &&
(lTool e `notElem` hiddenTools)
install' :: (MonadReader AppState m, MonadIO m, MonadThrow m, MonadFail m, MonadMask m, MonadUnliftIO m)
=> BrickState
-> (Int, ListResult)
-> m (Either String ())
install' _ (_, ListResult {..}) = do
AppState { ghcupInfo = GHCupInfo { _ghcupDownloads = dls }} <- ask
let run =
runResourceT
. runE
@'[ AlreadyInstalled
, ArchiveResult
, UnknownArchive
, FileDoesNotExistError
, CopyError
, NoDownload
, NotInstalled
, BuildFailed
, TagNotFound
, DigestError
, GPGError
, DownloadFailed
, DirNotEmpty
, NoUpdate
, TarDirDoesNotExist
, FileAlreadyExistsError
, ProcessError
, GHCupShadowed
, UninstallFailed
]
run (do
ce <- liftIO $ fmap (either (const Nothing) Just) $
try @_ @SomeException $ getExecutablePath >>= canonicalizePath
dirs <- lift getDirs
case lTool of
GHC -> do
let vi = getVersionInfo lVer GHC dls
liftE $ installGHCBin lVer GHCupInternal False $> (vi, dirs, ce)
Cabal -> do
let vi = getVersionInfo lVer Cabal dls
liftE $ installCabalBin lVer GHCupInternal False $> (vi, dirs, ce)
GHCup -> do
let vi = snd <$> getLatest dls GHCup
liftE $ upgradeGHCup Nothing False False $> (vi, dirs, ce)
HLS -> do
let vi = getVersionInfo lVer HLS dls
liftE $ installHLSBin lVer GHCupInternal False $> (vi, dirs, ce)
Stack -> do
let vi = getVersionInfo lVer Stack dls
liftE $ installStackBin lVer GHCupInternal False $> (vi, dirs, ce)
)
>>= \case
VRight (vi, Dirs{..}, Just ce) -> do
forM_ (_viPostInstall =<< vi) $ \msg -> logInfo msg
case lTool of
GHCup -> do
up <- liftIO $ fmap (either (const Nothing) Just)
$ try @_ @SomeException $ canonicalizePath (binDir </> "ghcup" <.> exeExt)
when ((normalise <$> up) == Just (normalise ce)) $
-- TODO: track cli arguments of previous invocation
liftIO $ SPP.executeFile ce False ["tui"] Nothing
logInfo "Please restart 'ghcup' for the changes to take effect"
_ -> pure ()
pure $ Right ()
VRight (vi, _, _) -> do
forM_ (_viPostInstall =<< vi) $ \msg -> logInfo msg
logInfo "Please restart 'ghcup' for the changes to take effect"
pure $ Right ()
VLeft (V (AlreadyInstalled _ _)) -> pure $ Right ()
VLeft (V NoUpdate) -> pure $ Right ()
VLeft e -> pure $ Left $ prettyShow e <> "\n"
<> "Also check the logs in ~/.ghcup/logs"
set' :: BrickState -> (Int, ListResult) -> IO (Either String ())
set' _ (_, ListResult {..}) = do
settings <- readIORef settings'
let run =
flip runReaderT settings
. runE @'[FileDoesNotExistError , NotInstalled , TagNotFound]
run (do
case lTool of
GHC -> liftE $ setGHC (GHCTargetVersion lCross lVer) SetGHCOnly Nothing $> ()
Cabal -> liftE $ setCabal lVer $> ()
HLS -> liftE $ setHLS lVer SetHLSOnly Nothing $> ()
Stack -> liftE $ setStack lVer $> ()
GHCup -> pure ()
)
>>= \case
VRight _ -> pure $ Right ()
VLeft e -> pure $ Left (prettyShow e)
del' :: (MonadReader AppState m, MonadIO m, MonadFail m, MonadMask m, MonadUnliftIO m)
=> BrickState
-> (Int, ListResult)
-> m (Either String ())
del' _ (_, ListResult {..}) = do
AppState { ghcupInfo = GHCupInfo { _ghcupDownloads = dls }} <- ask
let run = runE @'[NotInstalled, UninstallFailed]
run (do
let vi = getVersionInfo lVer lTool dls
case lTool of
GHC -> liftE $ rmGHCVer (GHCTargetVersion lCross lVer) $> vi
Cabal -> liftE $ rmCabalVer lVer $> vi
HLS -> liftE $ rmHLSVer lVer $> vi
Stack -> liftE $ rmStackVer lVer $> vi
GHCup -> pure Nothing
)
>>= \case
VRight vi -> do
forM_ (_viPostRemove =<< vi) $ \msg ->
logInfo msg
pure $ Right ()
VLeft e -> pure $ Left (prettyShow e)
changelog' :: (MonadReader AppState m, MonadIO m)
=> BrickState
-> (Int, ListResult)
-> m (Either String ())
changelog' _ (_, ListResult {..}) = do
AppState { pfreq, ghcupInfo = GHCupInfo { _ghcupDownloads = dls }} <- ask
case getChangeLog dls lTool (Left lVer) of
Nothing -> pure $ Left $
"Could not find ChangeLog for " <> prettyShow lTool <> ", version " <> T.unpack (prettyVer lVer)
Just uri -> do
let cmd = case _rPlatform pfreq of
Darwin -> "open"
Linux _ -> "xdg-open"
FreeBSD -> "xdg-open"
Windows -> "start"
exec cmd [T.unpack $ decUTF8Safe $ serializeURIRef' uri] Nothing Nothing >>= \case
Right _ -> pure $ Right ()
Left e -> pure $ Left $ prettyShow e
settings' :: IORef AppState
{-# NOINLINE settings' #-}
settings' = unsafePerformIO $ do
dirs <- getAllDirs
let loggerConfig = LoggerConfig { lcPrintDebug = False
, consoleOutter = \_ -> pure ()
, fileOutter = \_ -> pure ()
, fancyColors = True
}
newIORef $ AppState defaultSettings
dirs
defaultKeyBindings
(GHCupInfo mempty mempty mempty)
(PlatformRequest A_64 Darwin Nothing)
loggerConfig
brickMain :: AppState
-> IO ()
brickMain s = do
writeIORef settings' s
eAppData <- getAppData (Just $ ghcupInfo s)
case eAppData of
Right ad ->
defaultMain
(app (defaultAttributes (noColor $ settings s)) (dimAttributes (noColor $ settings s)))
(BrickState ad
defaultAppSettings
(constructList ad defaultAppSettings Nothing)
(keyBindings (s :: AppState))
)
$> ()
Left e -> do
flip runReaderT s $ logError $ "Error building app state: " <> T.pack (show e)
exitWith $ ExitFailure 2
defaultAppSettings :: BrickSettings
defaultAppSettings = BrickSettings { showAllVersions = False, showAllTools = False }
getGHCupInfo :: IO (Either String GHCupInfo)
getGHCupInfo = do
settings <- readIORef settings'
r <-
flip runReaderT settings
. runE @'[DigestError, GPGError, JSONError , DownloadFailed , FileDoesNotExistError]
$ liftE getDownloadsF
case r of
VRight a -> pure $ Right a
VLeft e -> pure $ Left (prettyShow e)
getAppData :: Maybe GHCupInfo
-> IO (Either String BrickData)
getAppData mgi = runExceptT $ do
r <- ExceptT $ maybe getGHCupInfo (pure . Right) mgi
liftIO $ modifyIORef settings' (\s -> s { ghcupInfo = r })
settings <- liftIO $ readIORef settings'
flip runReaderT settings $ do
lV <- listVersions Nothing Nothing
pure $ BrickData (reverse lV)
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