using System;
using System.Net;
using System.Net.Sockets;
using SipComponent.Linx;

namespace SipComponent
{
    /// <summary>
    /// A implementation of the abstract SipClientClass, for Linx (as opose to Simoco)
    /// </summary>
    public class SipClientClassLinx : SipClientClass
    {

        #region Fields

        private LinxSipMessageGenerator _sipMessageGenerator = new LinxSipMessageGenerator();

        #endregion

        /// <summary>
        /// Gets or sets a value indicating if the Asterisk server confirms sms
        /// <para>Default value is false</para>
        /// </summary>
        public bool SmsConfirmationFromServer
        {
            get { return base._smsConfirmationFromServer; }
            set { base._smsConfirmationFromServer = value; }
        }

        // constructor
        /// <summary>
        /// Constructor for the SipClientClassLinx
        /// </summary>
        /// <param name="asteriskIP">domain name, name or IP address of sip server</param>
        /// <param name="asteriskSipPort">port number of the sip server</param>
        /// <param name="localSipPort">port number of the local computer used for sip protocol</param>
        /// <param name="userName">user name on the sip server</param>
        /// <param name="password">password on the sip server</param>
        /// <param name="registrationInterval">interval to send sip registration requests. Value is in seconds</param>
        /// <param name="bufferMiliseconds">Miliseconds for the buffer that stores the received voice packets</param>
        /// <param name="requestTimeout">Number of ms to wait before the sip request times out</param>
        /// <param name="localIpAddress">Local Ip adress. If not specified, the class will search for a local ip on the same network with the sip server ip</param>
        public SipClientClassLinx(string asteriskIP, int asteriskSipPort, int localSipPort, string userName, string password, int registrationInterval, 
            int bufferMiliseconds, int requestTimeout, string localIpAddress = null) :
            base(asteriskIP, asteriskSipPort, localSipPort, userName, password, registrationInterval, bufferMiliseconds, requestTimeout, localIpAddress, false)
        {
            
        }

        #region Public Methods

        /// <summary>
        /// Sends a Sip Invite command to an user
        /// </summary>
        /// <param name="idToInvite">The sip id of the user</param>
        /// <param name="typeOfCall">Type of call: full duplex or half duplex</param>
        public void SendInvite(string idToInvite, TypeOfCall typeOfCall)
        {
            base.Invite(idToInvite, typeOfCall);
        }

        /// <summary>
        /// Method used to send Gps Request to a Linx device
        /// </summary>
        /// <param name="idToRequestGps">The sip id to send the gps request</param>
        /// <param name="seqID">The sequence id</param>
        public void SendGPSRequest(string idToRequestGps, string seqID)
        {
            base.SendLinxGpsRequest(idToRequestGps, seqID);
        }

        /// <summary>
        /// Method used to acknowledge an emergency alarm sent by a Linx device
        /// </summary>
        /// <param name="linxID">The sip id of the Linx device</param>
        public void AcknowledgeEmergencyAlarm(string linxID)
        {
            base.AcknowledgeLinxEmergencyAlarm(linxID);
        }


        /// <summary>
        /// Method used to start sending PTT Requests to a sip id
        /// </summary>
        /// <param name="sipID">The sip ID to send PTT Requests</param>
        public new void RequestPTT(string sipID)
        {
            base.RequestPTT(sipID);
        }

        /// <summary>
        /// Method used to check if you received PTT Grant from the specified user
        /// </summary>
        /// <param name="sipIDinDialogWith">The sip id of the user</param>
        /// <returns>True if you received ptt Grant, else false</returns>
        public new bool PTTGrantReceived(string sipIDinDialogWith)
        {
            return base.PTTGrantReceived(sipIDinDialogWith);
        }

        /// <summary>
        /// Method used to send End PTT to a sip id
        /// </summary>
        /// <param name="sipID">The sip id to send End PTT</param>
        public new void EndPTT(string sipID)
        {
            base.EndPTT(sipID);
        }

        /// <summary>
        /// Accepts a PTT Request from an user
        /// </summary>
        /// <param name="idToGrantPTT">The sip ID of the user</param>
        public new void GrantPTT(string idToGrantPTT)
        {
            base.GrantPTT(idToGrantPTT);
        }

        /// <summary>
        /// Method used to send Deny when you receive a PTT Request 
        /// </summary>
        /// <param name="idToDenyPTT">The sip ID sending PTT Request</param>
        public new void DenyPTT(string idToDenyPTT)
        {
            base.DenyPTT(idToDenyPTT);
        }

        #endregion

        #region Abstract Implementation


        internal override RTPListener2 CreateRTPListener(UdpClient udpClient, bool startAliveTimer, int bufferMiliseconds, 
            int sipIDinDialogWith, bool isGroupCall, TypeOfCall typeOfCall)
        {
            return new RTPListener2(udpClient, startAliveTimer, bufferMiliseconds, sipIDinDialogWith, isGroupCall, typeOfCall);
        }

        internal override RTPSender2 CreateRTPSender(UdpClient udpClient, int audioBitrate, IPEndPoint iPEndPoint, int v1, int v2, bool initiatedByMe, TypeOfCall typeOfCall, RtpCallType halfDuplexCallType = RtpCallType.Private)
        {
            return new RTPSender2(udpClient, audioBitrate, iPEndPoint, v1, v2, initiatedByMe, typeOfCall);
        }

        internal override SipMessageGenerator SipMessageGenerator
        {
            get
            {
                return _sipMessageGenerator;
            }
        }

        #endregion

        #region Events
        private object lockerGpsReportReceived = new object();
        /// <summary>
        /// Occurs when a GPS report is received from a Linx device
        /// </summary>
        public event EventHandler<LinxGpsDataEventArgs> GpsReportReceived
        {
            add
            {
                lock (lockerGpsReportReceived)
                {
                    base.LinxGpsReportReceived += value;
                }
            }
            remove
            {
                lock (lockerGpsReportReceived)
                {
                    base.LinxGpsReportReceived -= value;
                }
            }
        }

        private object lockerAlarmReceived = new object();
        /// <summary>
        /// Occurs when an emergency alarm is received from a Linx device
        /// </summary>
        public event EventHandler<LinxEmergencyAlarmReceivedEventArgs> EmergencyAlarmReceived
        {
            add
            {
                lock (lockerAlarmReceived)
                {
                    base.LinxEmergencyAlarmReceived += value;
                }
            }
            remove
            {
                lock (lockerAlarmReceived)
                {
                    base.LinxEmergencyAlarmReceived -= value;
                }
            }
        }

        private object lockerPttRequestReceived = new object();
        /// <summary>
        /// Occurs when you receive a PTT request
        /// </summary>
        public new event EventHandler<PTTrequestEventArgs> PTTrequestReceived
        {
            add
            {
                lock (lockerPttRequestReceived)
                {
                    base.PTTrequestReceived += value;
                }
            }
            remove
            {
                lock (lockerPttRequestReceived)
                {
                    base.PTTrequestReceived -= value;
                }
            }
        }


        private object lockerPTTrequestFailed = new object();
        /// <summary>
        /// Ocurs when you send the maximum number of PTT requests and you do not receive an answer
        /// </summary>
        public new event EventHandler<SipEventArgs> PTTrequestFailed
        {
            add
            {
                lock (lockerPTTrequestFailed)
                {
                    base.PTTrequestFailed += value;
                }
            }
            remove
            {
                lock (lockerPTTrequestFailed)
                {
                    base.PTTrequestFailed -= value;
                }
            }
        }

        private object lockerPTTrequestGranted = new object();
        /// <summary>
        /// Occurs when your PTT request is accepted
        /// </summary>
        public new event EventHandler<SipInfoEventArgs> PTTrequestGranted
        {
            add
            {
                lock (lockerPTTrequestGranted)
                {
                    base.PTTrequestGranted += value;
                }
            }
            remove
            {
                lock (lockerPTTrequestGranted)
                {
                    base.PTTrequestGranted -= value;
                }
            }
        }

        private object lockerPTTrequestDenied = new object();
        /// <summary>
        /// Ocurs when your PTT request is denied
        /// </summary>
        public new event EventHandler<SipEventArgs> PTTrequestDenied
        {
            add
            {
                lock (lockerPTTrequestDenied)
                {
                    base.PTTrequestDenied += value;
                }
            }
            remove
            {
                lock (lockerPTTrequestDenied)
                {
                    base.PTTrequestDenied -= value;
                }
            }
        }

        private object lockerPTTStartReceived = new object();
        /// <summary>
        /// Occurs when you receive a PTT Start packet
        /// </summary>
        public new event EventHandler<RtpEventArgs> PTTStartReceived
        {
            add
            {
                lock (lockerPTTStartReceived)
                {
                    base.PTTStartReceived += value;
                }
            }
            remove
            {
                lock (lockerPTTStartReceived)
                {
                    base.PTTStartReceived -= value;
                }
            }
        }

        private object lockerPTTEndReceived = new object();
        /// <summary>
        /// Occurs when you receive a PTT End packet
        /// </summary>
        public new event EventHandler<RtpEventArgs> PTTEndReceived
        {
            add
            {
                lock (lockerPTTEndReceived)
                {
                    base.PTTEndReceived += value;
                }
            }
            remove
            {
                lock (lockerPTTEndReceived)
                {
                    base.PTTEndReceived -= value;
                }
            }
        }


        private object lockerArsReceived = new object();
        /// <summary>
        /// Occurs when an Ars command is received from a Linx device
        /// </summary>
        public event EventHandler<Linx.ArsReceivedEventArgs> ArsReceived
        {
            add
            {
                lock (lockerArsReceived)
                {
                    base.LinxArsReceived += value;
                }
            }
            remove
            {
                lock (lockerArsReceived)
                {
                    base.LinxArsReceived -= value;
                }
            }
        }


        #endregion
    }
}