#include <X11/Xlib.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>

int main() {
    Display *display;
    Window window;
    int screen;
    GC gc;
    XEvent event;

    display = XOpenDisplay(NULL);
    if (display == NULL) {
        fprintf(stderr, "Unable to open X display\n");
        exit(1);
    }

    screen = DefaultScreen(display);
    window = XCreateSimpleWindow(display, RootWindow(display, screen), 10, 10, 800, 600, 1,
                                 BlackPixel(display, screen), WhitePixel(display, screen));

    XSelectInput(display, window, ExposureMask | KeyPressMask);
    XMapWindow(display, window);

    gc = XCreateGC(display, window, 0, NULL);
    XSetForeground(display, gc, BlackPixel(display, screen));

    XGetWindowAttributes(display, window, &attributes);
        *width = attributes.width;
        *height = attributes.height;
    
    int width = 800;
    int height = 600;
    int depth = DefaultDepth(display, screen);
    
    // Create a pixel buffer
    uint32_t* pixel_buffer = (uint32_t*)malloc(width * height * sizeof(uint32_t));
    if (pixel_buffer == NULL) {
        fprintf(stderr, "Unable to allocate pixel buffer\n");
        exit(1);
    }

    // Initialize pixel buffer (example: fill with blue color)
    for (int y = 0; y < height; y++) {
        for (int x = 0; x < width; x++) {
            pixel_buffer[y * width + x] = 0x0000FF; // Blue color
        }
    }

    // Create an XImage
    XImage *image = XCreateImage(display, DefaultVisual(display, screen), depth, ZPixmap, 0,
                                 (char *)pixel_buffer, width, height, 32, 0);

    while(1) {
        XNextEvent(display, &event);

        if (event.type == Expose) {
            XPutImage(display, window, gc, image, 0, 0, 0, 0, width, height);
        }
    }

    XDestroyImage(image);
    XFreeGC(display, gc);
    XDestroyWindow(display, window);
    XCloseDisplay(display);

    return 0;
}