#include <stdio.h>
#include <string.h>

typedef struct configuration {
  int n;
  double north;
  double east;
  double south;
  double west;
  double init_value;
  double threshold;
} configuration;

int load_config(configuration *config) {
  char property[100];
  char *value;
  FILE *fp;

  fp = fopen("jacobi.conf", "r");
  if (fp == NULL) {
    perror("Error opening file jacobi.conf");
    return 1;
  }
  while (fgets(property, 100, fp) != NULL) {
    if (property[0] == '\n' || property[0] == '#') {
      /* Skip empty lines and comments */
      continue;
    }
    value = strchr(property, ' ');
    if (value == NULL) {
      fclose(fp);
      perror("Error reading file jacobi.conf");
      return 1;
    }
    value[0] = '\0';
    value += sizeof(char);
    value[strlen(value) - 1] = '\0';
    if (strcmp(property, "N") == 0) {
      sscanf(value, "%d", &(config->n));
    } else if (strcmp(property, "NORTH") == 0) {
      sscanf(value, "%lf", &(config->north));
    } else if (strcmp(property, "EAST") == 0) {
      sscanf(value, "%lf", &(config->east));
    } else if (strcmp(property, "SOUTH") == 0) {
      sscanf(value, "%lf", &(config->south));
    } else if (strcmp(property, "WEST") == 0) {
      sscanf(value, "%lf", &(config->west));
    } else if (strcmp(property, "INIT_VALUE") == 0) {
      sscanf(value, "%lf", &(config->init_value));
    } else if (strcmp(property, "THRESHOLD") == 0) {
      sscanf(value, "%lf", &(config->threshold));
    } else {
      printf("Unknown property %s\n", property);
    }
  }
  fclose(fp);
  return 0;
}