/*
 * z64
 *
 * This program is free software; you can redistribute it and/
 * or modify it under the terms of the GNU General Public Li-
 * cence as published by the Free Software Foundation; either
 * version 2 of the Licence, or any later version.
 *
 * This program is distributed in the hope that it will be use-
 * ful, but WITHOUT ANY WARRANTY; without even the implied war-
 * ranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public Licence for more details.
 *
 * You should have received a copy of the GNU General Public
 * Licence along with this program; if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
 * USA.
 *
**/

#include "Gfx #1.3.h"
#include "rdp.h"
#include "rgl.h"

char rgl_cwd[512];

int rglReadSettings()
{
  FILE * fp;
  char line[512];
  char section[256];
  char key[256];
  int value;
  int i, ignore = 0;
  char rom[21];

#ifdef WIN32
  if (!rgl_cwd[0]) {
    getcwd(rgl_cwd, 512-32);
    LOG("getcwd = '%s'\n", rgl_cwd);
  }
  sprintf(line, "%s/Plugin/z64gl.conf", rgl_cwd);
  fp = fopen(line, "r");
#else
  char configName[PATH_MAX];

  strcpy(rgl_cwd, ".");
  strcpy(configName, g_ConfigDir);
  strcat(configName, "z64gl.conf");
  fp = fopen(configName, "r");
#endif

  if (!fp) {
    LOGERROR("Couldn't open z64gl config file\n");
    return -1;
  }

  for (i=0; i<20; i++)
    rom[i] = gfx.HEADER[(32+i)^3];
  rom[20] = 0;

  i = strlen(rom);
  while (i > 0 && rom[i-1] == ' ')
    rom[--i] = 0;
  LOG("rom name '%s'\n", rom);
  
  section[0] = 0;
  while (fgets(line, 255, fp)) {
    int l = strlen(line);
    char * e;
    if (l > 0 && line[l-1] == '\n') {
      line[l-1] = 0;
      l--;
    }

    if (line[0] == '#')
      continue;
    else if (sscanf(line, "[%21c]", section) == 1) {
      for (i=0; i<21; i++)
        if (section[i] == ']') {
          section[i] = 0;
          break;
        }
      LOG("section '%s'\n", section);
      ignore = strcmp(section, rom) && strcmp(section, "override");
    } else if (ignore)
      continue;
    
    if (sscanf(line , " %s = %d ", key, &value) == 2) {
      LOG("key '%s' value %d\n", key, value);
      if (!strcmp(key, "res_x"))
        rglSettings.resX = value;
      else if (!strcmp(key, "res_y"))
        rglSettings.resY = value;
      else if (!strcmp(key, "fs_res_x"))
        rglSettings.fsResX = value;
      else if (!strcmp(key, "fs_res_y"))
        rglSettings.fsResY = value;
      else if (!strcmp(key, "hires_fb"))
        rglSettings.hiresFb = value;
      else if (!strcmp(key, "fb_info"))
        rglSettings.fbInfo = value;
      else if (!strcmp(key, "force_swap"))
        rglSettings.forceSwap = value;
      else if (!strcmp(key, "threaded"))
        rglSettings.threaded = value;
      else if (!strcmp(key, "async"))
        rglSettings.async = value;
      else if (!strcmp(key, "no_npot_fbos"))
        rglSettings.noNpotFbos = value;
      else if (!strcmp(key, "lowres"))
        rglSettings.lowres = value;
      else
        LOGERROR("Unknown config key '%s'\n", key);
    }
  }

  fclose(fp);

  return 0;
}