#include <Windows.h>
static bool Running;

LRESULT CALLBACK MainWindowCallback(HWND Window,
    UINT Message,
    WPARAM wParam,
    LPARAM lParam)
{
    LRESULT Result = 0;
    switch (Message)
    {
    case WM_SIZE:
    {
                    OutputDebugString("WM_SIZE\n");
    } break;

    case WM_DESTROY:
    {
                       Running = false;
                       OutputDebugString("WM_DESTROY\n");
    } break;

    case WM_CLOSE:
    {
                     Running = false;
                     OutputDebugString("WM_CLOSE\n");
    } break;

    case WM_ACTIVATEAPP:
    {

                           OutputDebugString("WM_ACTIVATEAPP\n");
    } break;
    case WM_PAINT:
    {
                     PAINTSTRUCT Paint;
                     HDC DeviceContext = BeginPaint(Window, &Paint);
                     int x = Paint.rcPaint.left;
                     int y = Paint.rcPaint.top;
                     int Width = Paint.rcPaint.right - Paint.rcPaint.left;
                     int Height = Paint.rcPaint.bottom - Paint.rcPaint.top;
                     static DWORD Operation = WHITENESS;
                     PatBlt(DeviceContext, x, y, Width, Height, Operation);
                     if (Operation == WHITENESS)
                     {
                         Operation = BLACKNESS;
                     }
                     else{
                         Operation = WHITENESS;
                     }
                     EndPaint(Window, &Paint);

    } break;

    default:
    {
               //OutputDebugString("DEFAULT\n")
               Result = DefWindowProc(Window, Message, wParam, lParam);

    } break;
    }
    return(Result);
}


int CALLBACK WinMain(HINSTANCE Instance,
    HINSTANCE hPrevInstance,
    LPSTR lpCmdLine,
    int nCmdShow)
{

    WNDCLASS WindowClass = {};

    WindowClass.style = CS_OWNDC | CS_HREDRAW | CS_VREDRAW;
    WindowClass.lpfnWndProc = MainWindowCallback;
    WindowClass.hInstance = Instance;
    //WindowClass.hIcon;
    WindowClass.lpszClassName = "BitterProjectWindowClass";

    if (RegisterClass(&WindowClass)){
        HWND WindowHandle = CreateWindowEx(0,
            WindowClass.lpszClassName,
            "BitterProject",
            WS_OVERLAPPEDWINDOW | WS_VISIBLE,
            CW_USEDEFAULT,
            CW_USEDEFAULT,
            CW_USEDEFAULT,
            CW_USEDEFAULT,
            0,
            0,
            Instance,
            0);
        if (WindowHandle)
        {
            MSG Message;
            Running = true;
            while (Running)
            {
                BOOL MessageResult = GetMessage(&Message, 0, 0, 0);
                if (MessageResult > 0)
                {
                    TranslateMessage(&Message);
                    DispatchMessage(&Message);
                }
                else{
                    break;
                }

            }


        }
        else
        {
            OutputDebugString("Window handle didn't get sent properly i don't know");
        }
    }
    else {
        OutputDebugString("Window somehow didn't get created. Shit i don't know.");
    }


    return(0);
}