/* Copyright (C) 2025 awy <awy@awy.one>

   stmemory is free software: you can redistribute it and/or
   modify it under the terms of the GNU General Public License
   as published by the Free Software Foundation,
   either version 3 of the License, or (at your option) any later version.

   stmemory is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
   General Public License for more details.

   You should have received a copy of the GNU General Public
   License along with stmemory. If not, see
   <https://www.gnu.org/licenses/>. */

#include <stdio.h>

// TODO: Memory hogs on left click using signals

int
main(void)
{
  FILE *meminfo;
  char buff[100];
  long memtotal, memavail = 0;

  meminfo = fopen("/proc/meminfo", "r");

  if (meminfo == NULL) {
    puts("Error opening file");
    return 1;
  }

  fgets(buff, sizeof(buff), meminfo);
  sscanf(buff + 9, "%ld", &memtotal);

  fgets(buff, sizeof(buff), meminfo);
  fgets(buff, sizeof(buff), meminfo);
  sscanf(buff + 13, "%ld", &memavail);

  printf("%ldMB", (memtotal - memavail) / 1024 );

  fclose(meminfo);

  return 0;
}