module Interface.CommandKeys ( setupCommandKeyMode,
                               setupCommandKeyShiftBrick,
                               setupCommandKeyRotateBrick,
                               setupCommandKeyPauseResumeGame                             
                             )

where

import Core.Game
import Interface.KeyEvents
import Interface.WindowUpdate

import Control.Monad.State
import Control.Concurrent
import Graphics.UI.Gtk
import Graphics.UI.Gtk.Gdk.Events
import qualified Data.Set as Set; import Data.Set (Set)
import Data.IORef;

-------------------------------------------------------------------------------------------------------------------------
-- Setting up of keys which are:
-- > mode selection (once forever),
-- > shifting the brick (repeatable),
-- > rotating the brick (once),
-- > pausing/resuming game (once)

setupCommandKeyMode :: String -> Window -> DrawingArea -> IORef (Bool) -> (DrawingArea -> Window -> IO ()) -> IO ()
setupCommandKeyMode chrString window drawArea modeSelectedIORef mode
  = do onKeyPress window $ \Key { eventKeyName = key } -> 
         do when (key == chrString) $
              do selected <- readIORef modeSelectedIORef
                 unless (selected) $
                   do writeIORef modeSelectedIORef True
                      mode drawArea window
            return False
       return ()

setupCommandKeyShiftBrick :: String -> Window -> DrawingArea -> State Game Bool -> MVar Game -> IO ()
setupCommandKeyShiftBrick chrString window drawArea move gameMVar
  = do onKeyPress window $ \Key { eventKeyName = key } ->
         do when (key == chrString) $
              do updateWindowWithPlayerAction drawArea gameMVar move
            return False
       return ()

setupCommandKeyRotateBrick :: String -> Window -> DrawingArea -> State Game Bool -> MVar Game -> IORef (Set String) -> IO ()
setupCommandKeyRotateBrick chrString window drawArea move gameMVar keysIORef
  = do onKeyPress window $ onKeyDownEvent drawArea chrString keysIORef $ updateWindowWithPlayerAction drawArea gameMVar move
       onKeyRelease window $ onKeyUpEvent drawArea chrString keysIORef
       return ()

setupCommandKeyPauseResumeGame :: String -> Window -> DrawingArea -> State Game Bool -> MVar Game -> IORef (Set String) -> IO ()
setupCommandKeyPauseResumeGame chrString window drawArea move gameMVar keysIORef 
  = do onKeyPress window $ onKeyDownEvent drawArea chrString keysIORef $ updateWindowWithPlayerAction drawArea gameMVar move
       onKeyRelease window $ onKeyUpEvent drawArea chrString keysIORef
       return ()