#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <unistd.h>
#include <raylib.h>

#define FILENAME_INPUT  "./res/spotlight.frag"
#define FILENAME_OUTPUT "./build/spotlight.frag.c"

int
main (int argc, char *argv[])
{
  remove (FILENAME_OUTPUT);

  int fd = open (FILENAME_INPUT, O_RDONLY);
  if (fd == -1) {
    perror ("open");
    return EXIT_FAILURE;
  }

  struct stat sb;
  if (fstat (fd, &sb) == -1) {
    perror ("fstat");
    close (fd);
    return EXIT_FAILURE;
  }

  void *mapped = mmap (NULL, sb.st_size, PROT_READ, MAP_PRIVATE, fd, 0);
  if (mapped == MAP_FAILED) {
    perror ("mmap");
    close (fd);
    return EXIT_FAILURE;
  }

  if (!ExportDataAsCode (mapped, sb.st_size, FILENAME_OUTPUT)) {
    perror ("raylib");
    close (fd);
    return EXIT_FAILURE;
  }

  if (munmap (mapped, sb.st_size) == -1)
    perror ("munmap");
  close (fd);

  if (chmod (FILENAME_OUTPUT, S_IRUSR | S_IRGRP | S_IROTH) == -1) {
    perror ("chmod");
    return EXIT_FAILURE;
  }

  return EXIT_SUCCESS;
}