#include <SDL2/SDL_events.h>
#include <SDL2/SDL_pixels.h>
#include <SDL2/SDL_rect.h>
#include <SDL2/SDL_stdinc.h>
#include <SDL2/SDL_surface.h>
#include <SDL2/SDL_timer.h>
#include <SDL2/SDL_video.h>
#include <stdio.h>
#include <stdlib.h>
#include <SDL2/SDL.h>

int main()
{
  FILE *in = stdin;
  char *pthroway = calloc(1000, sizeof(char));
  // read first line (specifier P3 or P6 - ignore here)
  fgets(pthroway, 1000, in);
  // read second line (comment)
  fgets(pthroway, 1000, in);
  // read third line (dimensions: width / height)
  char *pdimensions = calloc(1000, sizeof(char));
  fgets(pdimensions, 1000, in);
  free(pthroway);

  int width = -1;
  int height = -1;
  sscanf(pdimensions, "%d %d\n", &width, &height);
  free(pdimensions);

  printf("width=%d, height=%d\n", width, height);

  SDL_Window * pwindow = SDL_CreateWindow("Image Viewer", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, width, height, 0);
  SDL_Surface *psurface = SDL_GetWindowSurface(pwindow);


  SDL_Rect pixel = (SDL_Rect){0, 0, 1, 1};
  Uint32 color = 0;
  for (int y = 0; y < height; y++) {
    for (int x = 0; x < width; x++) {
      Uint8 r, g, b;
      r = (char) getchar();
      g = (char) getchar();
      b = (char) getchar();
      color = SDL_MapRGB(psurface->format, r, g, b);
      pixel.x = x;
      pixel.y = y;
      SDL_FillRect(psurface, &pixel, color);
    }
  }
  SDL_UpdateWindowSurface(pwindow);

  int app_running = 1;
  while (app_running) {
    SDL_Event event;
    while (SDL_PollEvent(&event)) {
      if (event.type == SDL_QUIT) {
        app_running = 0;
      }
    }
    SDL_Delay(100);
  }

  return EXIT_SUCCESS;
}