#include <unistd.h> /* getopt */

#include <confuse.h>

#include <string.h> // for strcat

int main(int argc, char *argv[])

{

  char *input;

  char *output;

  char *jobid;

  char curopt;

  distren_t distren;

  distren_job_t distren_job;

  input = NULL;

  output = NULL;

  while(-1 != (curopt = getopt(argc, argv, "i:o:h")))

    {

      if(curopt == ':')

	{

	  fprintf(stderr, "-%c: is missing an argument\n", optopt);

	  return 1;

	}

      else if(curopt == '?')

	{

	  fprintf(stderr, "-%c: invalid option specified\n", optopt);

	  return 1;

	}

      else if(curopt == 'h')

	{

	  fprintf(stderr, "Usage: %s -i <inputfile> -o <outputfile>\n", argv[0]);

	  fprintf(stderr, "\t-i\tSpecifies the input file\n\

\t-o\tSpecifies the output file\n\

\t-h\tShows this help message\n");

	  //  don't return here because options_init will have an overall

	  //  options help page

	}

      else if(curopt == 'i')

	 //  TODO: is strdup good or bad? what about

	 //  the idea that all libs should allow plugging different

	 //  malloc/free implementations in?

	input = strdup(optarg);

      else if(curopt == 'o')

	output = strdup(optarg);

    }

     // give this error after the general arguments parsing so that

     // the general help from options_init can have effect

  if(!input

     || !output)

    {

      fprintf(stderr, "Input and output files must be specified\n");

      return 1;

    }

  fprintf(stderr, "reading from %s\nwriting to %s\n", input, output);

  if(distren_init_mf(&distren, &malloc, &free))

    {

      fprintf(stderr, "error initializing distren handle\n");

      return 1;

    }

  if(distren_submit_file(distren, &distren_job, input))

    {

      fprintf(stderr, "error submitting file\n");

      return 1;

    }

  if(distren_job_getid(distren_job, &jobid))

    {

      fprintf(stderr, "error retrieving job id\n");

      return 1;

    }

  fprintf(stdout, "jobid: %s\n", jobid);

  if(distren_job_retrieve_file(distren_job, output))

    {

      fprintf(stderr, "error retrieving output file\n");

      return 1;

    }

  // if these following lines fail, it'll be reported as a core dump ;-)

  distren_job_free(distren_job);

  distren_free(distren);

 return 0;

};