/sipsorcery-core/SIPSorcery.AppServer.DialPlan/DialPlanApps/GoogleVoiceUserAgent.cs

//-----------------------------------------------------------------------------

// Filename: GoogleVoiceUserAgent.cs

//

// Description: A wrapper for the Google Voice call application to allow it to

// work the same way as a standard SIP call and be used in dial strings.

// 

// History:

// 22 Jan 2011	    Aaron Clauson	    Created.

//

// License: 

// This software is licensed under the BSD License http://www.opensource.org/licenses/bsd-license.php

//

// Copyright (c) 2011 Aaron Clauson (aaron@sipsorcery.com), SIP Sorcery Ltd, Hobart (www.sipsorcery.com)

// All rights reserved.

//

// Redistribution and use in source and binary forms, with or without modification, are permitted provided that 

// the following conditions are met:

//

// Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 

// Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following 

// disclaimer in the documentation and/or other materials provided with the distribution. Neither the name of SIP Sorcery Ltd. 

// nor the names of its contributors may be used to endorse or promote products derived from this software without specific 

// prior written permission. 

//

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, 

// BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 

// IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 

// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 

// OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 

// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 

// POSSIBILITY OF SUCH DAMAGE.

//-----------------------------------------------------------------------------



using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using SIPSorcery.SIP;

using SIPSorcery.SIP.App;

using SIPSorcery.Sys;

using log4net;



namespace SIPSorcery.AppServer.DialPlan

{

    public class GoogleVoiceUserAgent : ISIPClientUserAgent

    {

        private const int MAX_CALLBACK_WAIT_TIME = 60;  // The maximum time that the callback will be waited for. Generally the call would be cancelled before this anyway.



        private static ILog logger = AppState.logger;



        public string Owner { get; set ;}

        public string AdminMemberId { get; set; }

        public UACInviteTransaction ServerTransaction { get; set; }

        public SIPDialogue SIPDialogue { get; set; }

        public SIPCallDescriptor CallDescriptor { get; set; }

        public bool IsUACAnswered { get; set; }



        public event SIPCallResponseDelegate CallTrying;

        public event SIPCallResponseDelegate CallRinging;

        public event SIPCallResponseDelegate CallAnswered;

        public event SIPCallFailedDelegate CallFailed;



        private GoogleVoiceCall m_googleVoiceCall;



        public GoogleVoiceUserAgent(
            SIPTransport sipTransport,
            ISIPCallManager callManager,
            SIPMonitorLogDelegate logDelegate,
            string username,
            string adminMemberId,
            SIPEndPoint outboundProxy)
        {

            Owner = username;

            AdminMemberId = adminMemberId;

            m_googleVoiceCall = new GoogleVoiceCall(sipTransport, callManager, logDelegate, username, adminMemberId, outboundProxy);

            m_googleVoiceCall.CallProgress += new CallProgressDelegate(CallProgress);

        }



        private void CallProgress(SIPResponseStatusCodesEnum progressStatus, string reasonPhrase, string[] customHeaders, string progressContentType, string progressBody, ISIPClientUserAgent uac)

        {

            SIPResponse progressResponse = new SIPResponse(progressStatus, reasonPhrase, null);

            CallRinging(this, progressResponse);

        }



        public void Call(SIPCallDescriptor descriptor)

        {

            try

            {

                CallDescriptor = descriptor;

                SIPURI destinationURI = SIPURI.ParseSIPURIRelaxed(descriptor.Uri);

                SIPDialogue = m_googleVoiceCall.InitiateCall(descriptor.Username, descriptor.Password, descriptor.CallbackNumber, destinationURI.User, descriptor.CallbackPattern, descriptor.CallbackPhoneType, MAX_CALLBACK_WAIT_TIME, descriptor.ContentType, descriptor.Content);



                if (SIPDialogue != null)

                {

                    CallAnswered(this, null);

                }

                else

                {

                    CallFailed(this, "Google Voice call failed.");

                }

            }

            catch (Exception excp)

            {

                logger.Error("Exception GoogleVoiceCallAgent Call. " + excp.Message);

                CallFailed(this, excp.Message);

            }

        }



        public void Cancel()

        {

            m_googleVoiceCall.ClientCallTerminated(CallCancelCause.Unknown);

        }



        public void Update(CRMHeaders crmHeaders)

        {

            throw new NotImplementedException();

        }

    }

}