/*

 * send.c

 *

 * Copyrigth (C) 2010 Nicolas Cornu <nicolas.cornu@ensi-bourges.fr>

 *

 * This program 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 2 of the License, or (at

 * your option) any later version.

 *

 * This program 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 this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307

 * USA

 */

#include <glib.h>

#include <loudmouth/loudmouth.h>

#include <mcabber/xmpp_helper.h>

#include <mcabber/xmpp_defines.h>

#include <jingle/jingle.h>

#include <jingle/sessions.h>

#include <jingle/send.h>

void jingle_send_session_terminate(JingleNode *jn, const gchar *reason)

{

  LmMessage *r;

  JingleNode *reply = g_new0(JingleNode, 1);

  JingleAckHandle *ackhandle;

  reply->action = JINGLE_SESSION_TERMINATE;

  reply->sid = jn->sid;

  r = lm_message_from_jinglenode(reply, lm_message_get_from(jn->message));

  if (r == NULL) return;

  if (reason != NULL) { 

    // TODO check reason 

    lm_message_node_add_child(err, reason, NULL);

  }

  ackhandle = g_new0(JingleAckHandle, 1);

  ackhandle->callback = NULL;

  ackhandle->user_data = NULL;

  lm_connection_send_with_reply(lconnection, r,

                                jingle_new_ack_handler(ackhandle), NULL);

  lm_message_unref(r);

}

void jingle_send_session_accept(JingleNode *jn)

{

  JingleNode accept = {0};

  JingleSession* sess;

  JingleContent *cn;

  GSList *child = NULL;

  JingleAppFuncs *appfuncs;

  JingleTransportFuncs *transfuncs;

  gconstpointer description, transport;

  const gchar *xmlns;

  GError *err = NULL;

  JingleAckHandle *ackhandle;

  accept.action = JINGLE_SESSION_ACCEPT;

  accept.responder = g_strdup_printf("%s/%s",

                                     lm_connection_get_jid(lconnection),

                                     settings_opt_get("resource"));

  accept.sid = jn->sid;

  accept.content = NULL;

  sess = session_new(jn);

  for (child = jn->content; child; child = child->next) {

    cn = (JingleContent *)(child->data);

    xmlns = lm_message_node_get_attribute(cn->description, "xmlns");

    appfuncs = jingle_get_appfuncs(xmlns);

    if (appfuncs == NULL) continue;

    xmlns = lm_message_node_get_attribute(cn->transport, "xmlns");

    transfuncs = jingle_get_transportfuncs(xmlns);

    if (appfuncs == NULL) continue;

    description = appfuncs->check(cn, &err);

    if (description == NULL || err != NULL) continue;

    transport = transfuncs->check(cn, &err);

    if (transport == NULL || err != NULL) continue;

    session_add_content(sess, cn, JINGLE_SESSION_STATE_ACTIVE);

    accept.content = g_slist_append(accept.content, cn);

  }

  if(g_slist_length(sess->content) == 0) {

    jingle_send_session_terminate(jn, "unsupported-applications");

    session_delete(sess);

    return;

  }

  if (g_slist_length(accept.content) <= 0) return;

  accept.message = lm_message_from_jinglenode(&accept,

                                              lm_message_get_from(jn->message));

  if (accept.message) {

    ackhandle = g_new0(JingleAckHandle, 1);

    ackhandle->callback = NULL;

    ackhandle->user_data = NULL;

    lm_connection_send_with_reply(lconnection, accept.message,

                                  jingle_new_ack_handler(ackhandle), NULL);

    lm_message_unref(accept.message);

  }

}