#if !defined(RESIP_DialogEventHandler_HXX)
#define RESIP_DialogEventHandler_HXX

#include "resip/dum/DialogEventInfo.hxx"
#include "resip/dum/InviteSessionHandler.hxx"

namespace resip
{

class DialogEvent
{
public:
   DialogEvent() = default;
   DialogEvent(const DialogEvent&) = default;
   DialogEvent(DialogEvent&&) = default;
   virtual ~DialogEvent() = default;

   DialogEvent& operator=(const DialogEvent&) = delete;
   DialogEvent& operator=(DialogEvent&&) = delete;

   enum DialogEventType
   {
      DialogEventType_Trying,
      DialogEventType_Proceeding,
      DialogEventType_Early,
      DialogEventType_Confirmed,
      DialogEventType_Terminated,
      DialogEventType_MultipleEvents
   };
   virtual DialogEventType getType() const = 0;
};

class TryingDialogEvent : public DialogEvent
{
public:
   TryingDialogEvent(const DialogEventInfo& info, const SipMessage& initialInvite)
      : mEventInfo(info), mInitialInvite(initialInvite)
   {}
   TryingDialogEvent(const TryingDialogEvent& rhs)
      : mEventInfo(rhs.mEventInfo), mInitialInvite(rhs.mInitialInvite)
   {}

   const DialogEventInfo& getEventInfo() const noexcept { return mEventInfo; }
   const SipMessage& getInitialInvite() const noexcept { return mInitialInvite; }
   DialogEventType getType() const override { return DialogEvent::DialogEventType_Trying; }

private:
   DialogEventInfo mEventInfo;
   SipMessage mInitialInvite;
};

class ProceedingDialogEvent : public DialogEvent
{
public:
   explicit ProceedingDialogEvent(const DialogEventInfo& info) 
      : mEventInfo(info)
   {}
   ProceedingDialogEvent(const ProceedingDialogEvent& rhs)
      : mEventInfo(rhs.mEventInfo)
   {}

   const DialogEventInfo& getEventInfo() const noexcept { return mEventInfo; }
   DialogEventType getType() const override { return DialogEvent::DialogEventType_Proceeding; }

private:
   DialogEventInfo mEventInfo;
};

class EarlyDialogEvent : public DialogEvent
{
public:
   explicit EarlyDialogEvent(const DialogEventInfo& info)
      : mEventInfo(info)
   {}
   EarlyDialogEvent(const EarlyDialogEvent& rhs)
      : mEventInfo(rhs.mEventInfo)
   {
   }

   const DialogEventInfo& getEventInfo() const noexcept { return mEventInfo; }
   DialogEventType getType() const override { return DialogEvent::DialogEventType_Early; }

private:
   DialogEventInfo mEventInfo;
};

class ConfirmedDialogEvent : public DialogEvent
{
public:
   explicit ConfirmedDialogEvent(const DialogEventInfo& info) 
      : mEventInfo(info)
   {}
   ConfirmedDialogEvent(const ConfirmedDialogEvent& rhs)
      : mEventInfo(rhs.mEventInfo)
   {}

   const DialogEventInfo& getEventInfo() const noexcept { return mEventInfo; }
   DialogEventType getType() const override { return DialogEvent::DialogEventType_Confirmed; }

private:
   DialogEventInfo mEventInfo;
};

class TerminatedDialogEvent : public DialogEvent
{
public:
   TerminatedDialogEvent(const DialogEventInfo& info, InviteSessionHandler::TerminatedReason reason, int code)
      : mEventInfo(info), mReason(reason), mCode(code)
   {}
   TerminatedDialogEvent(const TerminatedDialogEvent& rhs)
      : mEventInfo(rhs.mEventInfo), mReason(rhs.mReason), mCode(rhs.mCode)
   {}

   const DialogEventInfo& getEventInfo() const noexcept { return mEventInfo; }
   InviteSessionHandler::TerminatedReason getTerminatedReason() const noexcept { return mReason; }
   int getResponseCode() const noexcept { return mCode; }
   DialogEventType getType() const override { return DialogEvent::DialogEventType_Terminated; }

private:
   DialogEventInfo mEventInfo;
   InviteSessionHandler::TerminatedReason mReason;
   int mCode;
};

class MultipleEventDialogEvent : public DialogEvent
{
public:
   typedef std::vector<std::shared_ptr<DialogEvent>> EventVector;
   explicit MultipleEventDialogEvent(EventVector& events) 
      : mEvents(events)
   {}
   MultipleEventDialogEvent(const MultipleEventDialogEvent& rhs)
      : mEvents(rhs.mEvents)
   {}

   const EventVector& getEvents() const noexcept { return mEvents; }
   DialogEventType getType() const override { return DialogEvent::DialogEventType_MultipleEvents; }

private:
   EventVector mEvents;
};

class DialogEventHandler
{
   public:   
      virtual ~DialogEventHandler() = default;
      virtual void onTrying(const TryingDialogEvent& evt)=0;
      virtual void onProceeding(const ProceedingDialogEvent& evt)=0;
      virtual void onEarly(const EarlyDialogEvent& evt)=0;
      virtual void onConfirmed(const ConfirmedDialogEvent& evt)=0; 
      virtual void onTerminated(const TerminatedDialogEvent& evt)=0;
      virtual void onMultipleEvents(const MultipleEventDialogEvent& evt)=0;
};
      

}

#endif

/* ====================================================================
 * The Vovida Software License, Version 1.0 
 * 
 * Copyright (c) 2000 Vovida Networks, Inc.  All rights reserved.
 * 
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 * ====================================================================
 * 
 * This software consists of voluntary contributions made by Vovida
 * Networks, Inc. and many individuals on behalf of Vovida Networks,
 * Inc.  For more information on Vovida Networks, Inc., please see
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