/* GNU Mailutils -- a suite of utilities for electronic mail
   Copyright (C) 1999-2021 Free Software Foundation, Inc.

   GNU Mailutils 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, or (at your option)
   any later version.

   GNU Mailutils 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 GNU Mailutils.  If not, see <http://www.gnu.org/licenses/>. */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include <sys/types.h>
#include <sys/stat.h>

#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>

#include <mailutils/address.h>
#include <mailutils/debug.h>
#include <mailutils/errno.h>
#include <mailutils/list.h>
#include <mailutils/mailer.h>
#include <mailutils/message.h>
#include <mailutils/registrar.h>
#include <mailutils/stream.h>

const char USAGE[] =
"usage: mailer [-hd] [-m mailer] [-f from] [to]..."
 ;
const char HELP[] =
"  -h    print this helpful message\n"
"  -m    a mailer URL (default is \"sendmail:\")\n"
"  -f    the envelope from address (default is from user environment)\n"
"  to    a list of envelope to addresses (default is from message)\n"
"\n"
"An RFC2822 formatted message is read from stdin and delivered using\n"
"the mailer.\n"
 ;

int
main (int argc, char *argv[])
{
  int opt;
  int optdebug = 0;
  char *optmailer = "sendmail:";
  char *optfrom = 0;

  mu_stream_t in = 0;
  mu_message_t msg = 0;
  mu_mailer_t mailer = 0;
  mu_address_t from = 0;
  mu_address_t to = 0;

  while ((opt = getopt (argc, argv, "hdm:f:")) != -1)
    {
      switch (opt)
        {
        case 'h':
          printf ("%s\n%s", USAGE, HELP);
          return 0;
          
        case 'd':
          optdebug++;
          break;
          
        case 'm':
          optmailer = optarg;
          break;
          
        case 'f':
          optfrom = optarg;
          break;

        default:
          fprintf (stderr, "%s\n", USAGE);
          exit (1);
        }
    }

  /* Register mailers. */
  mu_registrar_record (mu_smtp_record);
  mu_registrar_record (mu_sendmail_record);

  if (optfrom)
    {
      MU_ASSERT (mu_address_create (&from, optfrom));
    }

  if (argv[optind])
    {
      char **av = argv + optind;

      MU_ASSERT (mu_address_createv (&to, (const char **) av, -1));
    }

  MU_ASSERT (mu_stdio_stream_create (&in, MU_STDIN_FD, MU_STREAM_SEEK));
  MU_ASSERT (mu_message_create (&msg, NULL));
  MU_ASSERT (mu_message_set_stream (msg, in, NULL));
  MU_ASSERT (mu_mailer_create (&mailer, optmailer));

  mu_debug_set_category_level (MU_DEBCAT_MAILER, 
                               MU_DEBUG_LEVEL_UPTO (MU_DEBUG_PROT));

  MU_ASSERT (mu_mailer_open (mailer, 0));

  MU_ASSERT (mu_mailer_send_message (mailer, msg, from, to));

  return 0;
}