#include <stdio.h>
//for use of exit()
#include <stdlib.h>
//for use of libconfig
#include <libconfig.h>

int main(int argc, char *argv[]) {
  fprintf(stdout,"main() Started...\n");

  /*read command line*/
  if (argc > 1){
    printf("main() argv[1]: %s\n", argv[1]);
  }else{
    fprintf(stderr, "Usage: %s <path to config file>\n", argv[0]);
    exit(1);
  }

  config_t cfg;
  const char *str;
  int port;

  /*initialise new and EMPTY config*/
  config_init(&cfg);

  /* Read the file. If there is an error, report it and exit. */
  /*TODO Make sure argv is a valid file name!*/
  if(! config_read_file(&cfg, argv[1]))
  {
    fprintf(stderr, "%s:%d - %s\n", config_error_file(&cfg),
            config_error_line(&cfg), config_error_text(&cfg));
    /*destroy config, BUT NOT the structure*/
    config_destroy(&cfg);
    return(EXIT_FAILURE);
  }

  /*lookup db string*/
  if(config_lookup_string(&cfg, "pq.db", &str)){
    printf("db: %s\n", str);
  }else{
    fprintf(stderr, "No 'db' setting in configuration file.\n");
  }

  /*lookup port int*/
  if(config_lookup_int(&cfg, "pq.port", &port)){
    printf("port: %d\n", port);
  }else{
    fprintf(stderr, "No 'port' setting in configuration file.\n");
  }

  config_destroy(&cfg);
  fprintf(stdout,"main() Done.\n");
  return(EXIT_SUCCESS);
}