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module Daffm.Event where
import Brick (suspendAndResume')
import qualified Brick.Main as M
import qualified Brick.Types as T
import qualified Brick.Widgets.Edit as Editor
import qualified Brick.Widgets.List as L
import Control.Monad.State (MonadIO (liftIO), MonadState, get, gets, modify, put)
import Daffm.State (cacheDirPosition, loadDirInAppState)
import Daffm.Types (AppState (..), FileInfo (..), FileType (..), FocusTarget (FocusCmdline, FocusMain))
import Data.Vector ((!?))
import qualified Graphics.Vty as V
import System.FilePath (takeDirectory)
import System.Process (callProcess)
type AppEvent = T.EventM FocusTarget AppState
modifyM :: (MonadState s m) => (s -> m s) -> m ()
modifyM f = get >>= f >>= put
appEvent :: T.BrickEvent FocusTarget e -> AppEvent ()
appEvent brickevent@(T.VtyEvent event) = do
focusTarget <- gets stateFocusTarget
case (focusTarget, event) of
(FocusCmdline, V.EvKey V.KEsc []) -> modify (\st -> st {stateFocusTarget = FocusMain})
(FocusMain, V.EvKey (V.KChar ':') []) -> modify (\st -> st {stateFocusTarget = FocusCmdline})
(FocusMain, V.EvKey (V.KChar 'q') []) -> M.halt
(FocusMain, V.EvKey (V.KChar 'l') []) -> openSelectedFile
(FocusMain, V.EvKey (V.KChar 'h') []) -> goBackToParentDir
(FocusMain, V.EvKey V.KEnter []) -> openSelectedFile
(FocusMain, V.EvKey V.KBS []) -> goBackToParentDir
(FocusMain, _) -> do
files <- gets stateFiles
newFiles <- T.nestEventM' files (L.handleListEventVi L.handleListEvent event)
modify (\appState -> appState {stateFiles = newFiles})
(FocusCmdline, _) -> do
editor <- gets stateCmdlineEditor
newEditor <- T.nestEventM' editor (Editor.handleEditorEvent brickevent)
modify (\appState -> appState {stateCmdlineEditor = newEditor})
modify cacheDirPosition
appEvent _ = pure ()
openSelectedFile :: AppEvent ()
openSelectedFile = do
AppState {stateFiles, stateCwd} <- get
let indexM = L.listSelected stateFiles
let files = L.listElements stateFiles
case indexM >>= (files !?) of
Just (FileInfo {filePath, fileType = Directory}) ->
modifyM (liftIO . loadDirInAppState filePath stateCwd)
Just (FileInfo {filePath, fileType}) -> do
suspendAndResume' $ do
putStrLn $ "Opening " <> show fileType <> ": " <> filePath
callProcess "nvim" [filePath]
pure ()
Nothing -> pure ()
pure ()
goBackToParentDir :: AppEvent ()
goBackToParentDir = do
dir <- gets stateParentDir
modifyM (liftIO . loadDirInAppState dir (takeDirectory dir))
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