/**
 * Copyright (c) 2025 Dominic Masters
 * 
 * This software is released under the MIT License.
 * https://opensource.org/licenses/MIT
 */

#pragma once
#include "script/scriptcontext.h"
#include "input/input.h"
#include "script/scriptstruct.h"

int moduleInputBind(lua_State *L) {
  assertNotNull(L, "Lua state cannot be NULL");

  // Requires action and button.
  if(!lua_isstring(L, 1)) {
    luaL_error(L, "inputBind: Expected button name as first argument");
    return 0;
  }

  // Expect action ID
  if(!lua_isinteger(L, 2)) {
    luaL_error(L, "inputBind: Expected action ID as second argument");
    return 0;
  }

  const char_t *strBtn = lua_tostring(L, 1);
  const inputaction_t action = (inputaction_t)lua_tointeger(L, 2);

  // Validate action
  if(action < INPUT_ACTION_NULL || action >= INPUT_ACTION_COUNT) {
    luaL_error(L, "inputBind: Invalid action ID %d", (int)action);
    return 0;
  }

  // Get button by name
  inputbutton_t btn = inputButtonGetByName(strBtn);
  if(btn.type == INPUT_BUTTON_TYPE_NONE) {
    printf("inputBind: Unknown button name '%s'\n", strBtn);
    return 0;
  }

  inputBind(btn, action);
  return 0;
}

void moduleInputEventGetter(
  const scriptcontext_t *context,
  const char_t *key,
  const void *structPtr,
  scriptvalue_t *outValue
) {
  if(stringCompare(key, "action") == 0) {
    outValue->type = SCRIPT_VALUE_TYPE_INT;
    outValue->value.intValue = ((const inputevent_t*)structPtr)->action;
    return;
  }
}

void moduleInput(scriptcontext_t *context) {
  assertNotNull(context, "Script context cannot be NULL");

  // Setup enums.
  scriptContextExec(context, INPUT_ACTION_SCRIPT);

  // Input values.
  scriptContextExec(context,
    #if INPUT_KEYBOARD == 1
      "INPUT_KEYBOARD = true\n"
    #endif
    #if INPUT_GAMEPAD == 1
      "INPUT_GAMEPAD = true\n"
    #endif
    #if INPUT_SDL2 == 1
      "INPUT_SDL2 = true\n"
    #endif
  );

  // Script structure
  scriptStructRegister(
    context,
    "input_mt",
    &moduleInputEventGetter,
    NULL
  );

  // Events
  scriptContextRegPointer(context,"INPUT_EVENT_PRESSED",&INPUT.eventPressed);
  scriptContextRegPointer(context,"INPUT_EVENT_RELEASED",&INPUT.eventReleased);

  // Bind methods
  scriptContextRegFunc(context, "inputBind", moduleInputBind);
}