// **********************************************************************
//
// Copyright (c) 2003-2014 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************

#ifndef ICE_IP_ENDPOINT_I_H
#define ICE_IP_ENDPOINT_I_H

#include <IceUtil/Config.h>
#include <IceUtil/Shared.h>
#include <IceUtil/Thread.h>
#include <IceUtil/Monitor.h>
#include <Ice/IPEndpointIF.h>
#include <Ice/EndpointI.h>
#include <Ice/Network.h>
#include <Ice/ProtocolInstanceF.h>
#include <Ice/ObserverHelper.h>

#ifndef ICE_OS_WINRT
#   include <deque>
#endif

namespace IceInternal
{

class ICE_API IPEndpointInfoI : public Ice::IPEndpointInfo
{
public:

    IPEndpointInfoI(const EndpointIPtr&);
    virtual ~IPEndpointInfoI();

    virtual Ice::Short type() const;
    virtual bool datagram() const;
    virtual bool secure() const;

private:

    const EndpointIPtr _endpoint;
};

class ICE_API IPEndpointI : public EndpointI
{
public:

    virtual Ice::EndpointInfoPtr getInfo() const;
    virtual Ice::Short type() const;
    virtual const std::string& protocol() const;
    virtual void streamWrite(BasicStream*) const;

    virtual const std::string& connectionId() const;
    virtual EndpointIPtr connectionId(const ::std::string&) const;

    virtual std::vector<ConnectorPtr> connectors(Ice::EndpointSelectionType) const;
    virtual void connectors_async(Ice::EndpointSelectionType, const EndpointI_connectorsPtr&) const;
    virtual std::vector<EndpointIPtr> expand() const;
    virtual bool equivalent(const EndpointIPtr&) const;
    virtual ::Ice::Int hash() const;
    virtual std::string options() const;

    virtual bool operator==(const Ice::LocalObject&) const;
    virtual bool operator<(const Ice::LocalObject&) const;

    virtual std::vector<ConnectorPtr> connectors(const std::vector<Address>&, const NetworkProxyPtr&) const;
    const std::string& host() const;
    int port() const;

    virtual void streamWriteImpl(BasicStream*) const;
    virtual void hashInit(Ice::Int&) const;
    virtual void fillEndpointInfo(Ice::IPEndpointInfo*) const;

    using EndpointI::connectors;
    using EndpointI::connectionId;

    void initWithOptions(std::vector<std::string>&, bool);

protected:

    friend class EndpointHostResolver;

    virtual bool checkOption(const std::string&, const std::string&, const std::string&);

    virtual ConnectorPtr createConnector(const Address& address, const NetworkProxyPtr&) const = 0;
    virtual IPEndpointIPtr createEndpoint(const std::string&, int, const std::string&) const = 0;

    IPEndpointI(const ProtocolInstancePtr&, const std::string&, int, const std::string&);
    IPEndpointI(const ProtocolInstancePtr&);
    IPEndpointI(const ProtocolInstancePtr&, BasicStream*);

    const ProtocolInstancePtr _instance;
    const std::string _host;
    const int _port;
    const std::string _connectionId;
    
private:

    mutable bool _hashInitialized;
    mutable Ice::Int _hashValue;
};

#ifndef ICE_OS_WINRT
class ICE_API EndpointHostResolver : public IceUtil::Thread, public IceUtil::Monitor<IceUtil::Mutex>
#else
class ICE_API EndpointHostResolver : public IceUtil::Shared
#endif
{
public:

    EndpointHostResolver(const InstancePtr&);

    std::vector<ConnectorPtr> resolve(const std::string&, int, Ice::EndpointSelectionType, const IPEndpointIPtr&);
    void resolve(const std::string&, int, Ice::EndpointSelectionType, const IPEndpointIPtr&,
                 const EndpointI_connectorsPtr&);
    void destroy();

    virtual void run();
    void updateObserver();

private:

#ifndef ICE_OS_WINRT
    struct ResolveEntry
    {
        std::string host;
        int port;
        Ice::EndpointSelectionType selType;
        IPEndpointIPtr endpoint;
        EndpointI_connectorsPtr callback;
        Ice::Instrumentation::ObserverPtr observer;
    };

    const InstancePtr _instance;
    const IceInternal::ProtocolSupport _protocol;
    const bool _preferIPv6;
    bool _destroyed;
    std::deque<ResolveEntry> _queue;
    ObserverHelperT<Ice::Instrumentation::ThreadObserver> _observer;
#else
    const InstancePtr _instance;
#endif
};

inline bool operator==(const IPEndpointI& l, const IPEndpointI& r)
{
    return static_cast<const ::Ice::LocalObject&>(l) == static_cast<const ::Ice::LocalObject&>(r);
}

inline bool operator<(const IPEndpointI& l, const IPEndpointI& r)
{
    return static_cast<const ::Ice::LocalObject&>(l) < static_cast<const ::Ice::LocalObject&>(r);
}

}

#endif