/**
 * I3cstat prints a configurable status bar for the i3 window manager
 * Copyright (C) 2022 Aaron Ball <nullspoon@oper.io>
 * 
 * This program 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.
 * 
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#include "config_mem.h"

void config_mem_init(struct node* n) {
  n->data = NULL;
  n->type = CTYPE_MEM;
  n->loadfunc = &config_mem_load;
  n->loadkey = &load_mem_key;
}

int _meminfo_read(struct _meminfo* minfo) {
  FILE* fd;
  char buf[64];
  fd = fopen("/proc/meminfo", "r");
  if(!fd)
    return -1;
  while(fgets(buf, 64, fd) != NULL) {
    if(strncmp(buf, "MemTotal: ", 10) == 0)
      sscanf(buf, "MemTotal: %ld kB", &minfo->total);
    else if(strncmp(buf, "MemFree: ", 9) == 0)
      sscanf(buf, "MemFree: %ld", &minfo->free);
    else if(strncmp(buf, "MemAvailable: ", 14) == 0)
      sscanf(buf, "MemAvailable: %ld ", &minfo->available);
    else if(strncmp(buf, "Buffers: ", 9) == 0)
      sscanf(buf, "Buffers: %ld ", &minfo->buffers);
    else if(strncmp(buf, "Cached: ", 8) == 0)
      sscanf(buf, "Cached: %ld ", &minfo->cached);
    else if(strncmp(buf, "SwapCached: ", 12) == 0)
      sscanf(buf, "SwapCached: %ld ", &minfo->swapcached);
  }
  fclose(fd);
  return 0;
}

void load_mem_key(struct node* n, char* key, char* val) {
}

int config_mem_load(struct node* n) {
  struct _meminfo minfo;
  long used;
  int percent;

  _meminfo_read(&minfo);
  used = minfo.total - minfo.free - minfo.buffers - minfo.cached;
  percent = used * 100 / minfo.total;

  if(percent < 20) {
    strcpy(n->color, C_GREEN);
  } else if(percent < 40) {
    strcpy(n->color, C_YELLOW);
  } else if(percent < 60) {
    strcpy(n->color, C_ORANGE);
  } else {
    strcpy(n->color, C_RED);
  }
  strcpy(n->label_color, C_LGREY);

  if(strcmp(n->display, "bar") == 0) {
    print_bar(n->width, (double)used / minfo.total, n->text);
  } else {
    sprintf(n->text, "%02d%%", percent);
  }

  return 0;
}