// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef REMOTING_PROTOCOL_CONNECTION_TO_HOST_H_
#define REMOTING_PROTOCOL_CONNECTION_TO_HOST_H_

#include <string>

#include "base/ref_counted.h"
#include "base/scoped_ptr.h"
#include "remoting/proto/internal.pb.h"
#include "remoting/protocol/host_stub.h"
#include "remoting/protocol/input_stub.h"

namespace remoting {
namespace protocol {

class ClientStub;
class SessionConfig;
class VideoStub;

class ConnectionToHost {
 public:
  class HostEventCallback {
   public:
    virtual ~HostEventCallback() {}

    // Called when the network connection is opened.
    virtual void OnConnectionOpened(ConnectionToHost* conn) = 0;

    // Called when the network connection is closed.
    virtual void OnConnectionClosed(ConnectionToHost* conn) = 0;

    // Called when the network connection has failed.
    virtual void OnConnectionFailed(ConnectionToHost* conn) = 0;
  };

  virtual ~ConnectionToHost();

  // TODO(ajwong): We need to generalize this API.
  virtual void Connect(const std::string& username,
                       const std::string& auth_token,
                       const std::string& host_jid,
                       HostEventCallback* event_callback,
                       ClientStub* client_stub,
                       VideoStub* video_stub) = 0;
  virtual void Disconnect() = 0;

  virtual const SessionConfig* config() = 0;

  virtual InputStub* input_stub();

  virtual HostStub* host_stub();

 protected:
  ConnectionToHost();

 //private: TODO(garykac). Merge jingle_connection_to_host up into this class
  // and then make these private again.
  ////////////////////////////////////////////////////////////////////////////
  // User input event channel interface

  // Stub for sending input event messages to the host.
  scoped_ptr<InputStub> input_stub_;

  ////////////////////////////////////////////////////////////////////////////
  // Protocol control channel interface

  // Stub for sending control messages to the host.
  scoped_ptr<HostStub> host_stub_;

  // Stub for receiving control messages from the host.
  ClientStub* client_stub_;

  ////////////////////////////////////////////////////////////////////////////
  // Video channel interface

  // Stub for receiving video packets from the host.
  VideoStub* video_stub_;

 private:
  DISALLOW_COPY_AND_ASSIGN(ConnectionToHost);
};

}  // namespace protocol
}  // namespace remoting

#endif  // REMOTING_PROTOCOL_CONNECTION_TO_HOST_H_