#include "../helpers.h"

namespace esp32lua {
namespace bindings {
namespace {

int getButtons(lua_State* state) {
  pushStrings(state, Runtime::from(state)->buttons().buttons());
  return 1;
}

int isAnyPressed(lua_State* state) {
  lua_pushboolean(state, Runtime::from(state)->buttons().isAnyPressed());
  return 1;
}

int isPressed(lua_State* state) {
  const std::string button = checkString(state, 1);
  lua_pushboolean(state, Runtime::from(state)->buttons().isPressed(button));
  return 1;
}

int wasPressed(lua_State* state) {
  const std::string button = checkString(state, 1);
  lua_pushboolean(state, Runtime::from(state)->buttons().wasPressed(button));
  return 1;
}

int wasReleased(lua_State* state) {
  const std::string button = checkString(state, 1);
  lua_pushboolean(state, Runtime::from(state)->buttons().wasReleased(button));
  return 1;
}

// @lua-module buttons ButtonsLib
// @lua-preamble ---@alias Button "up"|"down"|"left"|"right"|"confirm"|"back"
// @lua-preamble
// @lua-preamble -- Roles, not physical buttons: a device maps whatever hardware
// it has onto them, and
// @lua-preamble -- up/down/left/right are the directions tree.moveFocus already
// takes.
const luaL_Reg FUNCTIONS[] = {
    // ---Returns the roles this device reports, so an app can label only the
    // actions it has.
    // @return Button[]
    {"getAll", getButtons},
    // ---Whether any button is held.
    // @return boolean
    {"isAnyPressed", isAnyPressed},
    // ---Whether a button is held.
    // @param button Button
    // @return boolean
    {"isPressed", isPressed},
    // ---Whether a button went down since the last poll.
    // @param button Button
    // @return boolean
    {"wasPressed", wasPressed},
    // ---Whether a button came up since the last poll.
    // @param button Button
    // @return boolean
    {"wasReleased", wasReleased},
    {nullptr, nullptr},
};

} // namespace

void registerButtons(lua_State* state) {
  luaL_newlib(state, FUNCTIONS);
  lua_setglobal(state, "buttons");
}

} // namespace bindings
} // namespace esp32lua

// @lua-app ButtonHandlers
// @lua-preamble -- What an app implements to see buttons, composed into its own
// class:
// @lua-preamble --
// @lua-preamble --   ---@class MenuApp : App, ButtonHandlers
// ---Fired when a button goes down.
// @param button Button
// @lua-fn onButtonDown?
// ---Fired when a button comes up.
// @param button Button
// @lua-fn onButtonUp?
// ---Tap alias, fired on release like a click, after onButtonUp.
// @param button Button
// @lua-fn onButton?