{-# LANGUAGE CPP #-} {-# LANGUAGE DataKinds #-} {-# LANGUAGE FlexibleContexts #-} {-# LANGUAGE OverloadedStrings #-} {-# LANGUAGE TypeApplications #-} {-# LANGUAGE RankNTypes #-} {-# LANGUAGE ViewPatterns #-} {-# OPTIONS_GHC -Wno-unused-record-wildcards #-} {-# OPTIONS_GHC -Wno-unused-matches #-} {-# LANGUAGE FlexibleInstances #-} {-# LANGUAGE MultiParamTypeClasses #-} {-# LANGUAGE TemplateHaskell #-} {-# LANGUAGE BangPatterns #-} {-# LANGUAGE ViewPatterns #-} module BrickMain where import GHCup import GHCup.Download import GHCup.Errors import GHCup.Types.Optics ( getDirs, getPlatformReq ) import GHCup.Types hiding ( LeanAppState(..) ) import GHCup.Utils import GHCup.OptParse.Common (logGHCPostRm) import GHCup.Prelude ( decUTF8Safe ) import GHCup.Prelude.Logger import GHCup.Prelude.Process import GHCup.Prompts import Brick ( BrickEvent(VtyEvent, MouseDown), App(..), Padding(Max, Pad), AttrMap, EventM, Size(..), Widget(..), ViewportType (Vertical), (<+>), (<=>)) import qualified Brick import Brick.Widgets.Border ( hBorder, borderWithLabel) import Brick.Widgets.Border.Style ( unicode ) import Brick.Widgets.Center ( center, centerLayer ) import qualified Brick.Widgets.List as L import Brick.Focus (FocusRing) import qualified Brick.Focus as F import Control.Applicative 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.Function ( (&), on) import Data.List import Data.Maybe import Data.IORef (IORef, readIORef, newIORef, writeIORef, modifyIORef) import Data.Vector ( Vector ) import Data.Versions hiding (Lens') import Haskus.Utils.Variant.Excepts import Prelude hiding ( appendFile ) import System.Exit import System.IO.Unsafe import System.Process ( system ) import Text.PrettyPrint.HughesPJClass ( prettyShow ) import URI.ByteString import qualified Data.Text as T import qualified Data.Text.Lazy.Builder as B import qualified Data.Text.Lazy as L import qualified Graphics.Vty as Vty import qualified Data.Vector as V import System.Environment (getExecutablePath) #if !IS_WINDOWS import GHCup.Prelude.File import System.FilePath import qualified System.Posix.Process as SPP #endif import Optics.TH (makeLenses, makeLensesFor) import Optics.State (use) import Optics.State.Operators ( (.=), (%=), (<%=)) import Optics.Operators ((.~), (^.), (%~)) import Optics.Getter (view) import Optics.Lens (Lens', lens, toLensVL) {- Brick's widget: It is a FocusRing over many list's. Each list contains the information for each tool. Each list has an internal name (for Brick's runtime) and a label which we can use in rendering. This data-structure helps to reuse Brick.Widget.List and to navegate easily across Consider this code as private. GenericSectionList should not be used directly as the FocusRing should be align with the Vector containing the elements, otherwise you'd be focusing on a non-existent widget with unknown result (In theory the code is safe unless you have an empty section list). - To build a SectionList use the safe constructor sectionList - To access sections use the lens provider sectionL and the name of the section you'd like to access - You can modify Brick.Widget.List.GenericList within GenericSectionList via sectionL but do not modify the vector length -} data GenericSectionList n t e = GenericSectionList { sectionListFocusRing :: FocusRing n -- ^ The FocusRing for all sections , sectionListElements :: !(Vector (L.GenericList n t e)) -- ^ A key-value vector , sectionListName :: n -- ^ The section list name } makeLensesFor [("sectionListFocusRing", "sectionListFocusRingL"), ("sectionListElements", "sectionListElementsL"), ("sectionListName", "sectionListNameL")] ''GenericSectionList type SectionList n e = GenericSectionList n V.Vector e -- | Build a SectionList from nonempty list. If empty we could not defined sectionL lenses. sectionList :: Foldable t => n -- The name of the section list -> [(n, t e)] -- a list of tuples (section name, collection of elements) -> Int -> GenericSectionList n t e sectionList name elements height = GenericSectionList { sectionListFocusRing = F.focusRing [section_name | (section_name, _) <- elements] , sectionListElements = V.fromList [L.list section_name els height | (section_name, els) <- elements] , sectionListName = name } -- | This lens constructor, takes a name and looks if a section has such a name. -- Used to dispatch events to sections. It is a partial function only meant to -- be used with the FocusRing inside GenericSectionList sectionL :: Eq n => n -> Lens' (GenericSectionList n t e) (L.GenericList n t e) sectionL section_name = lens g s where is_section_name = (== section_name) . L.listName g section_list = let elms = section_list ^. sectionListElementsL zeroth = elms V.! 0 -- TODO: This crashes for empty vectors. in fromMaybe zeroth (V.find is_section_name elms) s gl@(GenericSectionList _ elms _) list = case V.findIndex is_section_name elms of Nothing -> gl Just i -> let new_elms = V.update elms (V.fromList [(i, list)]) in gl & sectionListElementsL .~ new_elms moveDown :: (L.Splittable t, Ord n, Foldable t) => EventM n (GenericSectionList n t e) () moveDown = do ring <- use sectionListFocusRingL case F.focusGetCurrent ring of Nothing -> pure () Just l -> do -- If it is the last element, move to the first element of the next focus; else, just handle regular list event. current_list <- use (sectionL l) let current_idx = L.listSelected current_list list_length = current_list & length if current_idx == Just (list_length - 1) then do new_focus <- sectionListFocusRingL <%= F.focusNext case F.focusGetCurrent new_focus of Nothing -> pure () -- |- Optic.Zoom.zoom doesn't typecheck but Lens.Micro.Mtl.zoom does. It is re-exported by Brick Just new_l -> Brick.zoom (toLensVL $ sectionL new_l) (Brick.modify L.listMoveToBeginning) else Brick.zoom (toLensVL $ sectionL l) $ Brick.modify L.listMoveDown moveUp :: (L.Splittable t, Ord n, Foldable t) => EventM n (GenericSectionList n t e) () moveUp = do ring <- use sectionListFocusRingL case F.focusGetCurrent ring of Nothing -> pure () Just l -> do -- If it is the first element, move to the last element of the prev focus; else, just handle regular list event. current_list <- use (sectionL l) let current_idx = L.listSelected current_list if current_idx == Just 0 then do new_focus <- sectionListFocusRingL <%= F.focusPrev case F.focusGetCurrent new_focus of Nothing -> pure () Just new_l -> Brick.zoom (toLensVL $ sectionL new_l) (Brick.modify L.listMoveToEnd) else Brick.zoom (toLensVL $ sectionL l) $ Brick.modify L.listMoveUp -- | Handle events for list cursor movement. Events handled are: -- -- * Up (up arrow key). If first element of section, then jump prev section -- * Down (down arrow key). If last element of section, then jump next section -- * Page Up (PgUp) -- * Page Down (PgDown) -- * Go to next section (Tab) -- * Go to prev section (BackTab) handleGenericListEvent :: (Foldable t, L.Splittable t, Ord n) => BrickEvent n a -> EventM n (GenericSectionList n t e) () handleGenericListEvent (VtyEvent (Vty.EvResize _ _)) = pure () handleGenericListEvent (VtyEvent (Vty.EvKey (Vty.KChar '\t') [])) = sectionListFocusRingL %= F.focusNext handleGenericListEvent (VtyEvent (Vty.EvKey Vty.KBackTab [])) = sectionListFocusRingL %= F.focusPrev handleGenericListEvent (MouseDown _ Vty.BScrollDown _ _) = moveDown handleGenericListEvent (MouseDown _ Vty.BScrollUp _ _) = moveUp handleGenericListEvent (VtyEvent (Vty.EvKey Vty.KDown [])) = moveDown handleGenericListEvent (VtyEvent (Vty.EvKey Vty.KUp [])) = moveUp handleGenericListEvent (VtyEvent ev) = do ring <- use sectionListFocusRingL case F.focusGetCurrent ring of Nothing -> pure () Just l -> Brick.zoom (toLensVL $ sectionL l) $ L.handleListEvent ev handleGenericListEvent _ = pure () -- This re-uses Brick.Widget.List.renderList renderSectionList :: forall n t e . (Traversable t, Ord n, Show n, Eq n, L.Splittable t, Semigroup (t e)) => (Bool -> e -> Widget n) -- ^ Rendering function of the list element, True for the selected element -> Bool -- ^ Whether the section list has focus -> GenericSectionList n t e -- ^ The section list to render -> Widget n renderSectionList renderElem sectionFocus ge@(GenericSectionList focus elms slName) = Brick.Widget Brick.Greedy Brick.Greedy $ Brick.render $ Brick.viewport slName Brick.Vertical $ V.ifoldl' (\(!accWidget) !i list -> let hasFocusList = sectionIsFocused list makeVisible = if hasFocusList then Brick.visibleRegion (Brick.Location (c, r)) (1, 1) else id appendBorder = if i == 0 then id else (hBorder <=>) newWidget = appendBorder (makeVisible $ renderInnerList hasFocusList list) in accWidget <=> newWidget ) Brick.emptyWidget elms where -- A section is focused if the whole thing is focused, and the inner list has focus sectionIsFocused :: L.GenericList n t e -> Bool sectionIsFocused l = sectionFocus && (Just (L.listName l) == F.focusGetCurrent focus) renderInnerList :: Bool -> L.GenericList n t e -> Widget n renderInnerList hasFocus l = Brick.vLimit (length l) $ L.renderList (\b -> renderElem (b && hasFocus)) hasFocus l -- compute the location to focus on within the active section (c, r) :: (Int, Int) = case sectionListSelectedElement ge of Nothing -> (0, 0) Just (selElIx, _) -> (0, selElIx) -- | Equivalent to listSelectedElement sectionListSelectedElement :: (Eq n, L.Splittable t, Traversable t, Semigroup (t e)) => GenericSectionList n t e -> Maybe (Int, e) sectionListSelectedElement generic_section_list = do current_focus <- generic_section_list ^. sectionListFocusRingL & F.focusGetCurrent let current_section = generic_section_list ^. sectionL current_focus L.listSelectedElement current_section {- Brick app data structures. In this section we define the state, the widgets and the core data structures which we will be using for the brick app. -} data Name = AllTools -- The main list widget | Singular Tool -- The particular list for each tool | KeyInfoBox -- The text box widget with action informacion | TutorialBox -- The tutorial widget deriving (Eq, Ord, Show) data Mode = Navigation | KeyInfo | Tutorial deriving (Eq, Show, Ord) installedSign :: String #if IS_WINDOWS installedSign = "I " #else installedSign = "✓ " #endif setSign :: String #if IS_WINDOWS setSign = "IS" #else setSign = "✔✔" #endif notInstalledSign :: String #if IS_WINDOWS notInstalledSign = "X " #else notInstalledSign = "✗ " #endif data BrickData = BrickData { _lr :: [ListResult] } deriving Show makeLenses ''BrickData data BrickSettings = BrickSettings { _showAllVersions :: Bool} --deriving Show makeLenses ''BrickSettings type BrickInternalState = SectionList Name ListResult data BrickState = BrickState { _appData :: BrickData , _appSettings :: BrickSettings , _appState :: BrickInternalState , _appKeys :: KeyBindings , _mode :: Mode } --deriving Show makeLenses ''BrickState app :: AttrMap -> AttrMap -> App BrickState () Name app attrs dimAttrs = App { appDraw = drawUI dimAttrs , appHandleEvent = eventHandler , appStartEvent = return () , appAttrMap = const attrs , appChooseCursor = Brick.showFirstCursor } {- Drawing. The section for creating our widgets. -} showKey :: Vty.Key -> String showKey (Vty.KChar c) = [c] showKey Vty.KUp = "↑" showKey Vty.KDown = "↓" showKey key = tail (show key) showMod :: Vty.Modifier -> String showMod = tail . show drawNavigation :: AttrMap -> BrickState -> Widget Name drawNavigation dimAttrs BrickState{ _appSettings = as@BrickSettings{}, ..} = Brick.padBottom Max ( Brick.withBorderStyle unicode $ borderWithLabel (Brick.str "GHCup") (center (header <=> hBorder <=> renderList' _appState)) ) <=> footer where footer = Brick.withAttr helpAttr . Brick.txtWrap . T.pack . foldr1 (\x y -> x <> " " <> y) . fmap (\(KeyCombination key mods, s, _) -> intercalate "+" (showKey key : (showMod <$> mods)) <> ":" <> s as) $ keyHandlers _appKeys header = minHSize 2 Brick.emptyWidget <+> Brick.padLeft (Pad 2) (minHSize 6 $ Brick.str "Tool") <+> minHSize 15 (Brick.str "Version") <+> Brick.padLeft (Pad 1) (minHSize 25 $ Brick.str "Tags") <+> Brick.padLeft (Pad 5) (Brick.str "Notes") renderList' bis = let allElements = V.concatMap L.listElements $ sectionListElements bis minTagSize = V.maximum $ V.map (length . intercalate "," . fmap tagToString . lTag) allElements minVerSize = V.maximum $ V.map (\ListResult{..} -> T.length $ tVerToText (GHCTargetVersion lCross lVer)) allElements in Brick.withDefAttr L.listAttr $ renderSectionList (renderItem minTagSize minVerSize) True bis renderItem minTagSize minVerSize b listResult@ListResult{lTag = lTag', ..} = let marks = if | lSet -> (Brick.withAttr setAttr $ Brick.str setSign) | lInstalled -> (Brick.withAttr installedAttr $ Brick.str installedSign) | otherwise -> (Brick.withAttr notInstalledAttr $ Brick.str notInstalledSign) 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 = Brick.updateAttrMap (const dimAttrs) . Brick.withAttr (Brick.attrName "no-bindist") | otherwise = id hooray | elem Latest lTag' && not lInstalled = Brick.withAttr hoorayAttr | otherwise = id in hooray $ dim ( marks <+> Brick.padLeft (Pad 2) ( minHSize 6 (printTool lTool) ) <+> minHSize minVerSize (Brick.str ver) <+> (let l = catMaybes . fmap printTag $ sort lTag' in Brick.padLeft (Pad 1) $ minHSize minTagSize $ if null l then Brick.emptyWidget else foldr1 (\x y -> x <+> Brick.str "," <+> y) l ) <+> Brick.padLeft (Pad 5) ( let notes = printNotes listResult in if null notes then Brick.emptyWidget else foldr1 (\x y -> x <+> Brick.str "," <+> y) notes ) <+> Brick.vLimit 1 (Brick.fill ' ') ) printTag Recommended = Just $ Brick.withAttr recommendedAttr $ Brick.str "recommended" printTag Latest = Just $ Brick.withAttr latestAttr $ Brick.str "latest" printTag Prerelease = Just $ Brick.withAttr prereleaseAttr $ Brick.str "prerelease" printTag Nightly = Just $ Brick.withAttr nightlyAttr $ Brick.str "nightly" printTag (Base pvp'') = Just $ Brick.str ("base-" ++ T.unpack (prettyPVP pvp'')) printTag Old = Nothing printTag LatestPrerelease = Just $ Brick.withAttr latestPrereleaseAttr $ Brick.str "latest-prerelease" printTag LatestNightly = Just $ Brick.withAttr latestNightlyAttr $ Brick.str "latest-nightly" printTag (UnknownTag t) = Just $ Brick.str t printTool Cabal = Brick.str "cabal" printTool GHC = Brick.str "GHC" printTool GHCup = Brick.str "GHCup" printTool HLS = Brick.str "HLS" printTool Stack = Brick.str "Stack" printNotes ListResult {..} = (if hlsPowered then [Brick.withAttr hlsPoweredAttr $ Brick.str "hls-powered"] else mempty ) ++ (if lStray then [Brick.withAttr strayAttr $ Brick.str "stray"] else mempty) ++ (case lReleaseDay of Nothing -> mempty Just d -> [Brick.withAttr dayAttr $ Brick.str (show d)]) minHSize s' = Brick.hLimit s' . Brick.vLimit 1 . (<+> Brick.fill ' ') drawTutorial :: Widget Name drawTutorial = let mkTextBox = Brick.hLimitPercent 70 . Brick.vBox . fmap (Brick.padRight Brick.Max) txt_separator = hBorder <+> Brick.str " o " <+> hBorder in centerLayer $ Brick.hLimitPercent 75 $ Brick.vLimitPercent 50 $ Brick.withBorderStyle unicode $ borderWithLabel (Brick.txt "Tutorial") $ Brick.vBox (fmap center [ mkTextBox [Brick.txtWrap "GHCup is a distribution channel for Haskell's tools."] , txt_separator , mkTextBox [ Brick.hBox [ Brick.txt "This symbol " , Brick.withAttr installedAttr (Brick.str installedSign) , Brick.txtWrap " means that the tool is installed but not in used" ] , Brick.hBox [ Brick.txt "This symbol " , Brick.withAttr setAttr (Brick.str setSign) , Brick.txtWrap " means that the tool is installed and in used" ] , Brick.hBox [ Brick.txt "This symbol " , Brick.withAttr notInstalledAttr (Brick.str notInstalledSign) , Brick.txt " means that the tool isn't installed" ] ] , txt_separator , mkTextBox [ Brick.hBox [ Brick.withAttr recommendedAttr $ Brick.str "recommended" , Brick.txtWrap " tag is based on community adoption, known bugs, etc... So It makes this version the least experimental" ] , Brick.hBox [ Brick.withAttr latestAttr $ Brick.str "latest" , Brick.txtWrap " tag is for the latest distributed version of the tool" ] , Brick.hBox [ Brick.withAttr latestAttr $ Brick.str "hls-powered" , Brick.txt " denotes the compiler version supported by the currently set (" , Brick.withAttr setAttr (Brick.str setSign) , Brick.txt ") hls" ] , Brick.txtWrap "base-X.Y.Z.W tag is the minimun version of the base package admited in such ghc version" ] , Brick.txt " " ]) <=> Brick.padRight Brick.Max (Brick.txt "Press q to exit the tutorial") drawKeyInfo :: KeyBindings -> Widget Name drawKeyInfo KeyBindings {..} = let mkTextBox = Brick.hLimitPercent 70 . Brick.vBox . fmap (Brick.padRight Brick.Max) keyToWidget (KeyCombination key mods) = Brick.str $ intercalate "+" (showKey key : (showMod <$> mods)) in centerLayer $ Brick.hLimitPercent 75 $ Brick.vLimitPercent 50 $ Brick.withBorderStyle unicode $ borderWithLabel (Brick.txt "Key Actions") $ Brick.vBox [ center $ mkTextBox [ Brick.hBox [ Brick.txt "Press " , keyToWidget bUp, Brick.txt " and ", keyToWidget bDown , Brick.txtWrap " to navigate the list of tools" ] , Brick.hBox [ Brick.txt "Press " , keyToWidget bInstall , Brick.txtWrap " to install the selected tool. Notice, you may need to set it as default afterwards" ] , Brick.hBox [ Brick.txt "Press " , keyToWidget bSet , Brick.txtWrap " to set a tool as the one for use" ] , Brick.hBox [ Brick.txt "Press " , keyToWidget bUninstall , Brick.txtWrap " to uninstall a tool" ] , Brick.hBox [ Brick.txt "Press " , keyToWidget bChangelog , Brick.txtWrap " to open the tool's changelog. It will open a web browser" ] , Brick.hBox [ Brick.txt "Press " , keyToWidget bShowAllVersions , Brick.txtWrap " to show older version of each tool" ] ] ] <=> Brick.hBox [Brick.txt "Press q to return to Navigation" <+> Brick.padRight Brick.Max (Brick.txt " ") <+> Brick.txt "Press Enter to go to the Tutorial"] drawUI :: AttrMap -> BrickState -> [Widget Name] drawUI dimAttrs st = let navg = drawNavigation dimAttrs st in case st ^. mode of Navigation -> [navg] Tutorial -> [drawTutorial, navg] KeyInfo -> [drawKeyInfo (st ^. appKeys), navg] {- Attributes -} defaultAttributes :: Bool -> AttrMap defaultAttributes no_color = Brick.attrMap Vty.defAttr [ (L.listSelectedFocusedAttr , Vty.defAttr `withBackColor` Vty.blue) , (L.listSelectedAttr , Vty.defAttr) , (notInstalledAttr , Vty.defAttr `withForeColor` Vty.red) , (setAttr , Vty.defAttr `withForeColor` Vty.green) , (installedAttr , Vty.defAttr `withForeColor` Vty.green) , (recommendedAttr , Vty.defAttr `withForeColor` Vty.green) , (hlsPoweredAttr , Vty.defAttr `withForeColor` Vty.green) , (latestAttr , Vty.defAttr `withForeColor` Vty.yellow) , (latestPrereleaseAttr , Vty.defAttr `withForeColor` Vty.red) , (latestNightlyAttr , Vty.defAttr `withForeColor` Vty.red) , (prereleaseAttr , Vty.defAttr `withForeColor` Vty.red) , (nightlyAttr , Vty.defAttr `withForeColor` Vty.red) , (compiledAttr , Vty.defAttr `withForeColor` Vty.blue) , (strayAttr , Vty.defAttr `withForeColor` Vty.blue) , (dayAttr , Vty.defAttr `withForeColor` Vty.blue) , (helpAttr , Vty.defAttr `withStyle` Vty.italic) , (hoorayAttr , 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 notInstalledAttr, setAttr, installedAttr, recommendedAttr, hlsPoweredAttr:: Brick.AttrName latestAttr, latestPrereleaseAttr, latestNightlyAttr, prereleaseAttr, nightlyAttr:: Brick.AttrName compiledAttr, strayAttr, dayAttr, helpAttr, hoorayAttr:: Brick.AttrName notInstalledAttr = Brick.attrName "not-installed" setAttr = Brick.attrName "set" installedAttr = Brick.attrName "installed" recommendedAttr = Brick.attrName "recommended" hlsPoweredAttr = Brick.attrName "hls-powered" latestAttr = Brick.attrName "latest" latestPrereleaseAttr = Brick.attrName "latest-prerelease" latestNightlyAttr = Brick.attrName "latest-nightly" prereleaseAttr = Brick.attrName "prerelease" nightlyAttr = Brick.attrName "nightly" compiledAttr = Brick.attrName "compiled" strayAttr = Brick.attrName "stray" dayAttr = Brick.attrName "day" helpAttr = Brick.attrName "help" hoorayAttr = Brick.attrName "hooray" dimAttributes :: Bool -> AttrMap dimAttributes no_color = Brick.attrMap (Vty.defAttr `Vty.withStyle` Vty.dim) [ (Brick.attrName "active" , Vty.defAttr `withBackColor` Vty.blue) -- has no effect ?? , (Brick.attrName "no-bindist", Vty.defAttr `Vty.withStyle` Vty.dim) ] where withBackColor | no_color = \attr _ -> attr `Vty.withStyle` Vty.reverseVideo | otherwise = Vty.withBackColor {- Handlers -} keyHandlers :: KeyBindings -> [ ( KeyCombination , BrickSettings -> String , EventM Name BrickState () ) ] keyHandlers KeyBindings {..} = [ (bQuit, const "Quit" , Brick.halt) , (bInstall, const "Install" , withIOAction install') , (bUninstall, const "Uninstall", withIOAction del') , (bSet, const "Set" , withIOAction set') , (bChangelog, const "ChangeLog", withIOAction changelog') , ( bShowAllVersions , \BrickSettings {..} -> if _showAllVersions then "Don't show all versions" else "Show all versions" , hideShowHandler' (not . _showAllVersions) ) , (bUp, const "Up", Brick.zoom (toLensVL appState) moveUp) , (bDown, const "Down", Brick.zoom (toLensVL appState) moveDown) , (KeyCombination (Vty.KChar 'h') [], const "help", mode .= KeyInfo) ] where --hideShowHandler' :: (BrickSettings -> Bool) -> (BrickSettings -> Bool) -> m () hideShowHandler' f = do app_settings <- use appSettings let vers = f app_settings newAppSettings = app_settings & showAllVersions .~ vers ad <- use appData current_app_state <- use appState appSettings .= newAppSettings appState .= constructList ad newAppSettings (Just current_app_state) tutorialHandler :: BrickEvent Name e -> EventM Name BrickState () tutorialHandler ev = case ev of VtyEvent (Vty.EvKey (Vty.KChar 'q') _ ) -> mode .= Navigation _ -> pure () keyInfoHandler :: BrickEvent Name e -> EventM Name BrickState () keyInfoHandler ev = do case ev of VtyEvent (Vty.EvKey (Vty.KChar 'q') _ ) -> mode .= Navigation VtyEvent (Vty.EvKey Vty.KEnter _ ) -> mode .= Tutorial _ -> pure () navigationHandler :: BrickEvent Name e -> EventM Name BrickState () navigationHandler ev = do AppState { keyBindings = kb } <- liftIO $ readIORef settings' case ev of inner_event@(VtyEvent (Vty.EvKey key _)) -> case find (\(key', _, _) -> key' == KeyCombination key []) (keyHandlers kb) of Nothing -> void $ Brick.zoom (toLensVL appState) $ handleGenericListEvent inner_event Just (_, _, handler) -> handler inner_event -> Brick.zoom (toLensVL appState) $ handleGenericListEvent inner_event eventHandler :: BrickEvent Name e -> EventM Name BrickState () eventHandler ev = do m <- use mode case m of KeyInfo -> keyInfoHandler ev Tutorial -> tutorialHandler ev Navigation -> navigationHandler ev {- Core Logic. This section defines the IO actions we can execute within the Brick App: - Install - Set - UnInstall - Launch the Changelog -} -- | 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 :: (Ord n, Eq n) => ( (Int, ListResult) -> ReaderT AppState IO (Either String a)) -> EventM n BrickState () withIOAction action = do as <- Brick.get case sectionListSelectedElement (view appState as) of Nothing -> pure () Just (curr_ix, e) -> do Brick.suspendAndResume $ do settings <- readIORef settings' flip runReaderT settings $ action (curr_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 , _mode = Navigation } constructList :: BrickData -> BrickSettings -> Maybe BrickInternalState -> BrickInternalState constructList appD settings = replaceLR (filterVisible (_showAllVersions settings)) (_lr appD) -- | Focus on the tool section and the predicate which matches. If no result matches, focus on index 0 selectBy :: Tool -> (ListResult -> Bool) -> BrickInternalState -> BrickInternalState selectBy tool predicate internal_state = let new_focus = F.focusSetCurrent (Singular tool) (view sectionListFocusRingL internal_state) tool_lens = sectionL (Singular tool) in internal_state & sectionListFocusRingL .~ new_focus & tool_lens %~ L.listMoveTo 0 -- We move to 0 first & tool_lens %~ L.listFindBy predicate -- The lookup by the predicate. -- | Select the latests GHC tool selectLatest :: BrickInternalState -> BrickInternalState selectLatest = selectBy GHC (elem Latest . 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 list_result s = let oldElem = s >>= sectionListSelectedElement -- Maybe (Int, e) newVec = [(Singular $ lTool (head g), V.fromList g) | g <- groupBy ((==) `on` lTool ) (filter filterF list_result)] newSectionList = sectionList AllTools newVec 1 in case oldElem of Just (_, el) -> selectBy (lTool el) (toolEqual el) newSectionList Nothing -> selectLatest newSectionList where toolEqual e1 e2 = lTool e1 == lTool e2 && lVer e1 == lVer e2 && lCross e1 == lCross e2 filterVisible :: Bool -> ListResult -> Bool filterVisible v e | lInstalled e = True | v , Nightly `notElem` lTag e = True | not v , Old `notElem` lTag e , Nightly `notElem` lTag e = True | otherwise = (Old `notElem` lTag e) && (Nightly `notElem` lTag e) install' :: (MonadReader AppState m, MonadIO m, MonadThrow m, MonadFail m, MonadMask m, MonadUnliftIO m, Alternative m) => (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 , ContentLengthError , GPGError , DownloadFailed , DirNotEmpty , NoUpdate , TarDirDoesNotExist , FileAlreadyExistsError , ProcessError , ToolShadowed , UninstallFailed , MergeFileTreeError , NoCompatiblePlatform , GHCup.Errors.ParseError , UnsupportedSetupCombo , DistroNotFound , NoCompatibleArch ] run (do ce <- liftIO $ fmap (either (const Nothing) Just) $ try @_ @SomeException $ getExecutablePath >>= canonicalizePath dirs <- lift getDirs case lTool of GHC -> do let vi = getVersionInfo (GHCTargetVersion lCross lVer) GHC dls liftE $ installGHCBin (GHCTargetVersion lCross lVer) GHCupInternal False [] $> (vi, dirs, ce) Cabal -> do let vi = getVersionInfo (GHCTargetVersion lCross 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 (GHCTargetVersion lCross lVer) HLS dls liftE $ installHLSBin lVer GHCupInternal False $> (vi, dirs, ce) Stack -> do let vi = getVersionInfo (GHCTargetVersion lCross 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 #if !IS_WINDOWS 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 #else logInfo "Please restart 'ghcup' for the changes to take effect" #endif _ -> 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 $ prettyHFError e <> "\n" <> "Also check the logs in ~/.ghcup/logs" set' :: (MonadReader AppState m, MonadIO m, MonadThrow m, MonadFail m, MonadMask m, MonadUnliftIO m, Alternative m) => (Int, ListResult) -> m (Either String ()) set' input@(_, ListResult {..}) = do settings <- liftIO $ readIORef settings' let run = flip runReaderT settings . runResourceT . runE @'[ AlreadyInstalled , ArchiveResult , UnknownArchive , FileDoesNotExistError , CopyError , NoDownload , NotInstalled , BuildFailed , TagNotFound , DigestError , ContentLengthError , GPGError , DownloadFailed , DirNotEmpty , NoUpdate , TarDirDoesNotExist , FileAlreadyExistsError , ProcessError , ToolShadowed , UninstallFailed , MergeFileTreeError , NoCompatiblePlatform , GHCup.Errors.ParseError , UnsupportedSetupCombo , DistroNotFound , NoCompatibleArch ] 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 -> do promptAnswer <- getUserPromptResponse "Switching GHCup versions is not supported.\nDo you want to install the latest version? [Y/N]: " case promptAnswer of PromptYes -> do void $ liftE $ upgradeGHCup Nothing False False PromptNo -> pure () ) >>= \case VRight _ -> pure $ Right () VLeft e -> case e of (V (NotInstalled tool _)) -> do promptAnswer <- getUserPromptResponse userPrompt case promptAnswer of PromptYes -> do res <- install' input case res of (Left err) -> pure $ Left err (Right _) -> do logInfo "Setting now..." set' input PromptNo -> pure $ Left (prettyHFError e) where userPrompt = L.toStrict . B.toLazyText . B.fromString $ "This Version of " <> show tool <> " you are trying to set is not installed.\n" <> "Would you like to install it first? [Y/N]: " _ -> pure $ Left (prettyHFError e) del' :: (MonadReader AppState m, MonadIO m, MonadFail m, MonadMask m, MonadUnliftIO m) => (Int, ListResult) -> m (Either String ()) del' (_, ListResult {..}) = do AppState { ghcupInfo = GHCupInfo { _ghcupDownloads = dls }} <- ask let run = runE @'[NotInstalled, UninstallFailed] run (do let vi = getVersionInfo (GHCTargetVersion lCross 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 when (lTool == GHC) $ logGHCPostRm (mkTVer lVer) forM_ (_viPostRemove =<< vi) $ \msg -> logInfo msg pure $ Right () VLeft e -> pure $ Left (prettyHFError e) changelog' :: (MonadReader AppState m, MonadIO m) => (Int, ListResult) -> m (Either String ()) changelog' (_, ListResult {..}) = do AppState { pfreq, ghcupInfo = GHCupInfo { _ghcupDownloads = dls }} <- ask case getChangeLog dls lTool (ToolVersion lVer) of Nothing -> pure $ Left $ "Could not find ChangeLog for " <> prettyShow lTool <> ", version " <> T.unpack (prettyVer lVer) Just uri -> do case _rPlatform pfreq of Darwin -> exec "open" [T.unpack $ decUTF8Safe $ serializeURIRef' uri] Nothing Nothing Linux _ -> exec "xdg-open" [T.unpack $ decUTF8Safe $ serializeURIRef' uri] Nothing Nothing FreeBSD -> exec "xdg-open" [T.unpack $ decUTF8Safe $ serializeURIRef' uri] Nothing Nothing Windows -> do let args = "start \"\" " ++ (T.unpack $ decUTF8Safe $ serializeURIRef' uri) c <- liftIO $ system $ args case c of (ExitFailure xi) -> pure $ Left $ NonZeroExit xi "cmd.exe" [args] ExitSuccess -> pure $ Right () >>= \case Right _ -> pure $ Right () Left e -> pure $ Left $ prettyHFError 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 Nothing) (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 -> Brick.defaultMain (app (defaultAttributes (noColor $ settings s)) (dimAttributes (noColor $ settings s))) (BrickState ad defaultAppSettings (constructList ad defaultAppSettings Nothing) (keyBindings (s :: AppState)) Navigation ) $> () Left e -> do flip runReaderT s $ logError $ "Error building app state: " <> T.pack (show e) exitWith $ ExitFailure 2 defaultAppSettings :: BrickSettings defaultAppSettings = BrickSettings { _showAllVersions = False} getGHCupInfo :: IO (Either String GHCupInfo) getGHCupInfo = do settings <- readIORef settings' r <- flip runReaderT settings . runE @'[DigestError, ContentLengthError, GPGError, JSONError , DownloadFailed , FileDoesNotExistError, StackPlatformDetectError] $ do pfreq <- lift getPlatformReq liftE $ getDownloadsF pfreq case r of VRight a -> pure $ Right a VLeft e -> pure $ Left (prettyHFError 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 [] False True (Nothing, Nothing) pure $ BrickData (reverse lV)