/*
 * Copyright (C) 2002-2003 Fhg Fokus
 * Copyright (C) 2006 iptego GmbH
 *
 * This file is part of SEMS, a free SIP media server.
 *
 * SEMS 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.
 *
 * For a license to use the sems software under conditions
 * other than those described here, or to purchase support for this
 * software, please contact iptel.org by e-mail at the following addresses:
 *    info@iptel.org
 *
 * SEMS 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 "AnnounceAuth.h"
#include "AmConfig.h"
#include "AmUtils.h"

#include "sems.h"
#include "log.h"

#include "ampi/UACAuthAPI.h"
#include "AmUAC.h"
#include "AmPlugIn.h"

#define MOD_NAME "announce_auth"

EXPORT_SESSION_FACTORY(AnnounceAuthFactory,MOD_NAME);

string AnnounceAuthFactory::AnnouncePath;
string AnnounceAuthFactory::AnnounceFile;

AnnounceAuthFactory::AnnounceAuthFactory(const string& _app_name)
  : AmSessionFactory(_app_name)
{
}

int AnnounceAuthFactory::onLoad()
{
  AmConfigReader cfg;
  if(cfg.loadFile(AmConfig::ModConfigPath + string(MOD_NAME ".conf")))
    return -1;

  // get application specific global parameters
  configureModule(cfg);

  AnnouncePath = cfg.getParameter("announce_path",ANNOUNCE_PATH);
  if( !AnnouncePath.empty() 
      && AnnouncePath[AnnouncePath.length()-1] != '/' )
    AnnouncePath += "/";

  AnnounceFile = cfg.getParameter("default_announce",ANNOUNCE_FILE);

  string announce_file = AnnouncePath + AnnounceFile;
  if(!file_exists(announce_file)){
    ERROR("default file for ann_b2b module does not exist ('%s').\n",
	  announce_file.c_str());
    return -1;
  }


  auth_realm = cfg.getParameter("auth_realm", "");
  auth_user  = cfg.getParameter("auth_user",  "");
  auth_pwd   = cfg.getParameter("auth_pwd", "");

  dialer.set_dial(cfg.getParameter("dial_ruri","default ruri"),
		  cfg.getParameter("dial_from","default from"),
		  cfg.getParameter("dial_fromuri","default fromuri"),
		  cfg.getParameter("dial_to","default to"));

  dialer.start();

  return 0;
}

AmSession* AnnounceAuthFactory::onInvite(const AmSipRequest& req, const string& app_name,
					 const map<string,string>& app_params)
{
  string announce_path = AnnouncePath;
  string announce_file = announce_path + req.domain 
    + "/" + req.user + ".wav";

  DBG("trying '%s'\n",announce_file.c_str());
  if(file_exists(announce_file))
    goto end;

  announce_file = announce_path + req.user + ".wav";
  DBG("trying '%s'\n",announce_file.c_str());
  if(file_exists(announce_file))
    goto end;

  announce_file = AnnouncePath + AnnounceFile;
    
 end:
  AnnounceAuthDialog* dlg =
    new AnnounceAuthDialog(announce_file,auth_realm, auth_user, auth_pwd);

  AmUACAuth::enable(dlg);

  return dlg;
}

AnnounceAuthDialog::AnnounceAuthDialog(const string& filename,
				       const string& auth_realm,
				       const string& auth_user,
				       const string& auth_pwd)
  : filename(filename), credentials(auth_realm, auth_user, auth_pwd)
{
}

UACAuthCred* AnnounceAuthDialog::getCredentials() {
  return &credentials;
}

AnnounceAuthDialog::~AnnounceAuthDialog()
{
}

void AnnounceAuthDialog::onSessionStart()
{
  DBG("AnnounceAuthDialog::onSessionStart\n");
  startSession();

  AmSession::onSessionStart();
}

void AnnounceAuthDialog::startSession()
{
  // disable DTMF detection - don't use DTMF here
  setDtmfDetectionEnabled(false);

  if(wav_file.open(filename,AmAudioFile::Read))
    throw string("AnnounceAuthDialog::onSessionStart: Cannot open file\n");
    
  setOutput(&wav_file);
}

void AnnounceAuthDialog::onBye(const AmSipRequest& req)
{
  DBG("onBye: stopSession\n");
  setStopped();
}


void AnnounceAuthDialog::process(AmEvent* event)
{

  AmAudioEvent* audio_event = dynamic_cast<AmAudioEvent*>(event);
  if(audio_event && (audio_event->event_id == AmAudioEvent::cleared)){
    dlg->bye();
    setStopped();
    return;
  }

  AmSession::process(event);
}

void DialerThread::set_dial(const string& r, const string& f, 
			    const string& fu, const string& t) {
  r_uri = r;
  from = f;
  from_uri = fu;
  to = t;
}

void DialerThread::run() {
  sleep(15); // wait for sems to completely start up
  while (!is_stopped()) {		
    DBG("dialing...");
    AmUAC::dialout("blibla", "announce_auth", 
		   r_uri, from, from_uri, to);
    // every 10 minutes
    sleep(100);

  } 
}

void DialerThread::on_stop() {
  DBG("stopping...\n");
}