85 lines
2.5 KiB
Haskell
85 lines
2.5 KiB
Haskell
module Main where
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import System.Posix.Directory ( getWorkingDirectory )
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import System.Directory ( pathIsSymbolicLink
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, doesFileExist
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, getFileSize
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, doesDirectoryExist )
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import Data.Functor ( (<&>) )
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import Control.Monad ( filterM )
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import System.Directory.Extra ( listContents )
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import Brick
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import Graphics.Vty
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import Data.List.Extra
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import qualified Data.Ord
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listNonSymFiles :: FilePath -> IO [FilePath]
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listNonSymFiles dir = filterM (fmap not . pathIsSymbolicLink) =<< filterM doesFileExist =<< listContents dir
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listNonSymDirectories :: FilePath -> IO [FilePath]
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listNonSymDirectories dir = filterM (fmap not . pathIsSymbolicLink) =<< filterM doesDirectoryExist =<< listContents dir
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getSizeSubpaths :: FilePath -> IO [(FilePath, Integer)]
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getSizeSubpaths x = do
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sub <- listNonSymDirectories x
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subby <- mapM (\y -> (y,) . sum . map snd <$> getSizeSubpaths y) sub
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local <- listNonSymFiles x >>= (\y -> mapM getFileSize y <&> zip y)
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pure $ sortOn (Data.Ord.Down . snd) $ local ++ subby
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data AppS = AppS
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{
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_appCWD :: FilePath
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, _appCursor :: Int
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, _appFocus :: Maybe FilePath
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, _appSubFiles :: [(FilePath, Integer)]
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}
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data ScrollDirection where
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SUp :: ScrollDirection
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SDown :: ScrollDirection
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ui :: Widget ()
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ui = viewport () Vertical $ str "Svamp är gott"
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app :: App () e ()
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app =
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App { appDraw = const [ui]
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, appHandleEvent = resizeOrQuit
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, appStartEvent = pure ()
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, appAttrMap = const $ attrMap (white `on` blue) []
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, appChooseCursor = neverShowCursor
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}
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sizeDir :: AppS -> IO AppS
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sizeDir s = do
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subFiles <- getSizeSubpaths $ _appCWD s
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pure $ s {_appSubFiles = subFiles}
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changeDir :: AppS -> FilePath -> IO AppS
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changeDir so f =
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let s = so {
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_appCWD = f
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, _appSubFiles = []
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} in
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sizeDir s
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scroll :: ScrollDirection -> AppS -> AppS
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scroll d s = s {
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_appCursor = newCursor
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, _appFocus = maybeNewPath
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}
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where cursor =
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_appCursor s +
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case d of
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SUp -> (-1)
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SDown -> 1
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newCursor = max 0 (min ((-) 1 . length $ _appSubFiles s) cursor)
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maybeNewPath = fst <$> _appSubFiles s !? newCursor
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main :: IO ()
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main = do
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a <- getWorkingDirectory
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print =<< getSizeSubpaths a
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defaultMain app ()
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