// IAEngine: 2D Game Engine by IA
// Copyright (C) 2025 IASoft (PVT) LTD (oss@iasoft.dev)
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

#pragma once

#include <IAEngine/Base.hpp>

#include <SDL3/SDL.h>

namespace ia::iae
{
    class InputManager
    {
        public:
        struct KeyboardGamePadMapping
        {
            IN InputKey AxisLeft;
            IN InputKey AxisRight; 
            IN InputKey AxisDown;
            IN InputKey AxisUp;
            IN InputKey ButtonA; 
            IN InputKey ButtonB;
            IN InputKey ButtonC; 
            IN InputKey ButtonD;
        };

      public:
        STATIC VOID SwitchModeToText();
        STATIC VOID SwitchModeToAction();

        STATIC BOOL IsPointerDown();
        STATIC Vec2 GetPointerPosition();

        STATIC BOOL IsPointerDown(IN CONST Vec2& start, IN CONST Vec2& end);
        STATIC BOOL DidPointerClick(IN CONST Vec2& start, IN CONST Vec2& end);
        STATIC BOOL DidPointerClick(IN CONST Vec2& center, IN FLOAT32 radius);
        STATIC BOOL IsPointerDown(IN CONST Vec2& center, IN FLOAT32 radius);

        STATIC BOOL IsKeyDown(IN InputKey key);
        STATIC BOOL WasKeyPressed(IN InputKey key);
        STATIC BOOL WasKeyReleased(IN InputKey key);

        STATIC VOID SetupOnScreenGamePad();
        STATIC VOID SetupKeyboardGamePad(IN CONST KeyboardGamePadMapping& mapping);

        STATIC BOOL GetButtonA();
        STATIC BOOL GetButtonB();
        STATIC BOOL GetButtonC();
        STATIC BOOL GetButtonD();
        STATIC INT16 GetVerticalAxis();
        STATIC INT16 GetHorizontalAxis();
        STATIC IVec2 GetDirectionalInput();

        STATIC VOID SetButtonA(IN BOOL value);
        STATIC VOID SetButtonB(IN BOOL value);
        STATIC VOID SetButtonC(IN BOOL value);
        STATIC VOID SetButtonD(IN BOOL value);
        STATIC VOID SetVerticalAxis(IN INT16 value);
        STATIC VOID SetHorizontalAxis(IN INT16 value);

      private:
        STATIC BOOL s_buttonA;
        STATIC BOOL s_buttonB;
        STATIC BOOL s_buttonC;
        STATIC BOOL s_buttonD;
        STATIC INT16 s_verticalAxis;
        STATIC INT16 s_horizontalAxis;
        STATIC BOOL s_keys[256];
        STATIC BOOL s_prevKeys[256];
        STATIC BOOL s_pointerState;
        STATIC BOOL s_pointerPrevState;
        STATIC Vec2 s_pointerPosition;
        STATIC BOOL s_onScreenGamePadEnabled;
        STATIC BOOL s_keyboardGamePadEnabled;
        STATIC KeyboardGamePadMapping s_keyboardGamePadMapping;

    private:
        STATIC VOID Initialize();
        STATIC VOID Terminate();

        STATIC VOID Draw();
        STATIC VOID Update();

        STATIC VOID OnSDLEvent(IN SDL_Event *event);

        friend class Engine;
        friend class __Internal_Engine;
    };
} // namespace ia::iae