4 files changed, 25 insertions, 29 deletions
diff --git a/src/Chelleport/AppShell.hs b/src/Chelleport/AppShell.hs
index 2e95a85..d48e06b 100644
--- a/src/Chelleport/AppShell.hs
+++ b/src/Chelleport/AppShell.hs
@@ -20,13 +20,13 @@ instance (MonadIO m) => MonadAppShell (AppM m) where
   hideWindow = asks ctxWindow >>= SDL.hideWindow
   showWindow = asks ctxWindow >>= SDL.showWindow
   shutdownApp = do
-    DrawContext {ctxRenderer = renderer, ctxWindow = window, ctxX11Display = x11Display} <- ask
-    SDL.destroyRenderer renderer
-    SDL.destroyWindow window
+    ctx <- ask
+    SDL.destroyRenderer $ ctxRenderer ctx
+    SDL.destroyWindow $ ctxWindow ctx
     releaseMouseButton
     SDL.quit
     liftIO $ do
-      X11.closeDisplay x11Display
+      X11.closeDisplay $ ctxX11Display ctx
       exitSuccess
 
 type Update m state appAction = state -> appAction -> m (state, Maybe appAction)
diff --git a/src/Chelleport/AppState.hs b/src/Chelleport/AppState.hs
index 7687257..697e9c4 100644
--- a/src/Chelleport/AppState.hs
+++ b/src/Chelleport/AppState.hs
@@ -7,7 +7,7 @@ import Chelleport.KeySequence (findMatchPosition, generateGrid, nextChars, toKey
 import Chelleport.OCR (MonadOCR (captureScreenshot), getWordsInImage)
 import Chelleport.Types
 import Chelleport.Utils (cIntToInt, clamp, intToCInt, isEmpty, itemAt)
-import Control.Monad (forM_)
+import Control.Monad (replicateM_)
 import Data.Char (toLower)
 import Data.List (isInfixOf)
 import Data.Maybe (fromMaybe, isJust)
@@ -25,9 +25,7 @@ update :: (MonadAppShell m, MonadDraw m, MonadControl m, MonadOCR m) => State ->
 -- Chain clicks
 update state (ChainMouseClick btn) = do
   hideWindow
-  let count = case stateRepetition state of 0 -> 1; n -> n
-  forM_ [1 .. count] $ \_ -> do
-    clickMouseButton btn
+  replicateM_ (stateRepetition state) $ clickMouseButton btn
   showWindow
   pure (state {stateRepetition = 1}, Just ResetKeys)
 
@@ -90,7 +88,7 @@ update state (IncrementHighlightIndex n) = do
 -- Move mouse incrementally
 update state (IncrementMouseCursor (incX, incY)) = do
   (curX, curY) <- getMousePointerPosition
-  let count = case stateRepetition state of 0 -> 1; n -> n
+  let count = stateRepetition state
   let pos = (cIntToInt curX + count * incX, cIntToInt curY + count * incY)
   pure (state {stateRepetition = 1}, Just $ MoveMousePosition pos)
 
@@ -159,14 +157,12 @@ update state ShutdownApp = do
 -- Trigger click
 update state (TriggerMouseClick btn) = do
   hideWindow
-  let count = case stateRepetition state of 0 -> 1; n -> n
-  forM_ [1 .. count] $ \_ -> do
-    clickMouseButton btn
+  replicateM_ (stateRepetition state) $ clickMouseButton btn
   pure (state {stateRepetition = 1}, Just ShutdownApp)
 
 -- Set repetition count
 update state (UpdateRepetition count) = do
-  pure (state {stateRepetition = count}, Nothing)
+  pure (state {stateRepetition = max 1 count}, Nothing)
 
 -- Set/unset whether shift is pressed
 update state (UpdateShiftState shiftPressed) =
diff --git a/src/Chelleport/Control.hs b/src/Chelleport/Control.hs
index e7bd418..a7c475f 100644
--- a/src/Chelleport/Control.hs
+++ b/src/Chelleport/Control.hs
@@ -1,6 +1,6 @@
 module Chelleport.Control where
 
-import Chelleport.KeySequence (isKeycodeDigit, isValidKey)
+import Chelleport.KeySequence (isAlphabetic, isKeycodeDigit)
 import Chelleport.Types
 import Chelleport.Utils
 import Control.Concurrent (threadDelay)
@@ -91,8 +91,8 @@ shift ev = SDL.keyModifierLeftShift (keyModifier ev) || SDL.keyModifierRightShif
 anyDigit :: SDL.KeyboardEventData -> Bool
 anyDigit = isKeycodeDigit . eventToKeycode
 
-anyAlphanumeric :: SDL.KeyboardEventData -> Bool
-anyAlphanumeric = isValidKey . eventToKeycode
+anyAlphabetic :: SDL.KeyboardEventData -> Bool
+anyAlphabetic = isAlphabetic . eventToKeycode
 
 hjklDirection :: Char -> Direction
 hjklDirection = \case
diff --git a/src/Chelleport/KeySequence.hs b/src/Chelleport/KeySequence.hs
index fd8eaa7..70d56e2 100644
--- a/src/Chelleport/KeySequence.hs
+++ b/src/Chelleport/KeySequence.hs
@@ -14,8 +14,8 @@ nextChars keySequence cells =
     [] -> Nothing
     _ -> Just nextCharactersInSequence
   where
-    matches = concatMap (filter $ isPrefixOf keySequence) cells
     nextCharactersInSequence = uniq $ concatMap (take 1 . drop (length keySequence)) matches
+    matches = concatMap (filter $ isPrefixOf keySequence) cells
 
 findMatchPosition :: KeySequence -> KeyGrid -> Maybe (Int, Int)
 findMatchPosition keySequence = findWithIndex searchRows 0
@@ -23,16 +23,16 @@ findMatchPosition keySequence = findWithIndex searchRows 0
     searchRows = fmap fst . findWithIndex searchInRow 0
     searchInRow = guard . (== keySequence)
 
-isValidKey :: SDL.Keycode -> Bool
-isValidKey = (`Map.member` keycodeCharMapping)
+isAlphabetic :: SDL.Keycode -> Bool
+isAlphabetic = (`Map.member` keycodeCharMapping)
 
 -- Linear Congruential Generator
 lcg :: Int -> Int
-lcg seed = (a * seed + c) `mod` fromIntegral m
+lcg seed = (multiplier * seed + increment) `mod` modulus
   where
-    a = 1664525
-    c = 1013904223
-    m = (2 :: Integer) ^ (32 :: Integer)
+    multiplier = 1664525
+    increment = 1013904223
+    modulus = fromIntegral $ (2 :: Integer) ^ (32 :: Integer)
 
 getIndexRounded :: Int -> [a] -> a
 getIndexRounded i ls = ls !! (i `mod` length ls)
@@ -54,6 +54,12 @@ generateGrid seed (rows, columns) hintKeys
 toKeyChar :: SDL.Keycode -> Maybe Char
 toKeyChar = (`Map.lookup` keycodeCharMapping)
 
+keycodeToInt :: SDL.Keycode -> Maybe Int
+keycodeToInt = (`elemIndex` digitKeycodes)
+
+isKeycodeDigit :: SDL.Keycode -> Bool
+isKeycodeDigit = isJust . keycodeToInt
+
 keycodeCharMapping :: Map.Map SDL.Keycode Char
 keycodeCharMapping =
   Map.fromList
@@ -85,12 +91,6 @@ keycodeCharMapping =
       (SDL.KeycodeZ, 'Z')
     ]
 
-keycodeToInt :: SDL.Keycode -> Maybe Int
-keycodeToInt = (`elemIndex` digitKeycodes)
-
-isKeycodeDigit :: SDL.Keycode -> Bool
-isKeycodeDigit = isJust . keycodeToInt
-
 digitKeycodes :: [SDL.Keycode]
 digitKeycodes =
   [ SDL.Keycode0,