#define _POSIX_C_SOURCE 200809L

#include "kd_image.h"

#include <stdio.h>
#include <X11/Xutil.h>

typedef struct KDTestImageHandle {
    XImage *ximage;
    GC clip_mask_gc;
    Pixmap clip_mask;
} KDTestImageHandle;

int main(int argc, char **argv)
{
    Display *display;
    struct nk_image image;
    KDTestImageHandle *handle;
    Visual *visual;
    unsigned long first_pixel;
    unsigned long second_pixel;

    if (argc != 3) {
        (void)fprintf(stderr, "Usage: %s red-green-p3.ppm red-green-p6.ppm\n", argv[0]);
        return 2;
    }
    display = XOpenDisplay(NULL);
    if (display == NULL) {
        (void)fprintf(stderr, "Could not open DISPLAY.\n");
        return 2;
    }
    image = kd_ppm_load(display, DefaultScreen(display), argv[1], 20U, 20U);
    if (image.handle.ptr == NULL || image.w != 2U || image.h != 1U) {
        (void)fprintf(stderr, "P3 image failed to load.\n");
        XCloseDisplay(display);
        return 1;
    }
    handle = (KDTestImageHandle *)image.handle.ptr;
    visual = DefaultVisual(display, DefaultScreen(display));
    first_pixel = XGetPixel(handle->ximage, 0, 0);
    second_pixel = XGetPixel(handle->ximage, 1, 0);
    if ((first_pixel & visual->red_mask) == 0UL ||
        (first_pixel & visual->green_mask) != 0UL ||
        (second_pixel & visual->green_mask) == 0UL ||
        (second_pixel & visual->red_mask) != 0UL) {
        (void)fprintf(stderr, "P3 pixel colors were incorrect.\n");
        kd_ppm_free(&image);
        XCloseDisplay(display);
        return 1;
    }
    kd_ppm_free(&image);
    image = kd_ppm_load(display, DefaultScreen(display), argv[2], 20U, 20U);
    if (image.handle.ptr == NULL || image.w != 2U || image.h != 1U) {
        (void)fprintf(stderr, "P6 image failed to load.\n");
        XCloseDisplay(display);
        return 1;
    }
    kd_ppm_free(&image);
    XCloseDisplay(display);
    (void)puts("PASS: P3/P6 PPM decoding and XImage pixels");
    return 0;
}