/* GNU Mailutils -- a suite of utilities for electronic mail
   Copyright (C) 2010-2012, 2014-2017 Free Software Foundation, Inc.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 3 of the License, or (at your option) any later version.

   This library 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General
   Public License along with this library.  If not, see
   <http://www.gnu.org/licenses/>. */

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

#include <mailutils/errno.h>
#include <mailutils/stream.h>
#include <mailutils/sys/imap.h>

int
mu_imap_logout (mu_imap_t imap)
{
  int status;
  
  if (imap == NULL)
    return EINVAL;
  if (!imap->io)
    return MU_ERR_NO_TRANSPORT;
  if (imap->session_state == MU_IMAP_SESSION_INIT)
    return MU_ERR_SEQ;

  switch (imap->client_state)
    {
    case MU_IMAP_CLIENT_READY:
      status = _mu_imap_tag_next (imap);
      MU_IMAP_CHECK_EAGAIN (imap, status);
      status = mu_imapio_printf (imap->io, "%s LOGOUT\r\n",
				 imap->tag_str); 
      MU_IMAP_CHECK_EAGAIN (imap, status);
      MU_IMAP_FCLR (imap, MU_IMAP_RESP);
      imap->client_state = MU_IMAP_CLIENT_LOGOUT_RX;

    case MU_IMAP_CLIENT_LOGOUT_RX:
      status = _mu_imap_response (imap, NULL, NULL);
      MU_IMAP_CHECK_EAGAIN (imap, status);
      imap->client_state = MU_IMAP_CLIENT_READY;
      imap->session_state = MU_IMAP_SESSION_INIT;
      break;

    default:
      status = EINPROGRESS;
    }
  return status;
}
      
