structure Input =
struct
  type window = MLton.Pointer.t

  (* Constants. *)
  val (PRESS, _) =
    _symbol "PRESS" public : ( unit -> int ) * ( int -> unit );
  val PRESS = PRESS ()

  val (REPEAT, _) =
    _symbol "REPEAT" public : ( unit -> int ) * ( int -> unit );
  val REPEAT = REPEAT ()

  val (RELEASE, _) =
    _symbol "RELEASE" public : ( unit -> int ) * ( int -> unit );
  val RELEASE = RELEASE ()

  val exportFramebufferSizeCallback =
    _export "mltonFramebufferSizeCallback" public : (int * int -> unit) -> unit;
  val setFramebufferSizeCallback =
    _import "setFramebufferSizeCallback" public : window -> unit;

  val exportCharCallback =
    _export "mltonCharCallback" public : (Word32.word -> unit) -> unit;
  val setCharCallback =
    _import "setCharCallback" public : window -> unit;

  val exportKeyCallback =
    _export "mltonKeyCallback" public : (int * int * int * int -> unit) -> unit;
  val setKeyCallback =
    _import "setKeyCallback" public : window -> unit;

  val (KEY_ESC, _) =
    _symbol "KEY_ESC" public : ( unit -> int ) * ( int -> unit );
  val KEY_ESC = KEY_ESC ()
  val (KEY_ENTER, _) =
    _symbol "KEY_ENTER" public : ( unit -> int ) * ( int -> unit );
  val KEY_ENTER = KEY_ENTER ()
  val (KEY_BACKSPACE, _) =
    _symbol "KEY_BACKSPACE" public : ( unit -> int ) * ( int -> unit );
  val KEY_BACKSPACE = KEY_BACKSPACE ()

  val (KEY_ARROW_LEFT, _) =
    _symbol "KEY_ARROW_LEFT" public : ( unit -> int ) * ( int -> unit );
  val KEY_ARROW_LEFT = KEY_ARROW_LEFT ()
  val (KEY_ARROW_UP, _) =
    _symbol "KEY_ARROW_UP" public : ( unit -> int ) * ( int -> unit );
  val KEY_ARROW_UP = KEY_ARROW_UP ()
  val (KEY_ARROW_RIGHT, _) =
    _symbol "KEY_ARROW_RIGHT" public : ( unit -> int ) * ( int -> unit );
  val KEY_ARROW_RIGHT = KEY_ARROW_RIGHT ()
  val (KEY_ARROW_DOWN, _) =
    _symbol "KEY_ARROW_DOWN" public : ( unit -> int ) * ( int -> unit );
  val KEY_ARROW_DOWN = KEY_ARROW_DOWN ()

  (* gamepad bindings below *)
  val getGamepadState =
    _import "getGamepadState" public : int -> int;

  val getLeftJoystickXAxisState =
    _import "getLeftJoystickXAxisState" public : unit -> Real32.real;
  val getLeftJoystickYAxisState =
    _import "getLeftJoystickYAxisState" public : unit -> Real32.real;

  val isCrossButtonPressed =
    _import "isCrossButtonPressed" public : unit -> int;
  val isCircleButtonPressed =
    _import "isCircleButtonPressed" public : unit -> int;
  val isSquareButtonPressed =
    _import "isSquareButtonPressed" public : unit -> int;
  val isTriangleButtonPressed =
    _import "isTriangleButtonPressed" public : unit -> int;
  val isR1ButtonPressed =
    _import "isR1ButtonPressed" public : unit -> int;
  val isL1ButtonPressed =
    _import "isL1ButtonPressed" public : unit -> int;

  val isDpadUpButtonPressed =
    _import "isDpadUpButtonPressed" public : unit -> int;
  val isDpadDownButtonPressed =
    _import "isDpadDownButtonPressed" public : unit -> int;
  val isDpadLeftButtonPressed =
    _import "isDpadLeftButtonPressed" public : unit -> int;
  val isDpadRightButtonPressed =
    _import "isDpadRightButtonPressed" public : unit -> int;

  val getR2State =
    _import "getR2State" public : unit -> Real32.real;
  val getL2State =
    _import "getL2State" public : unit -> Real32.real;
end