/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/* vim:set et ts=4 sts=4 sw=4 cin: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef nsFtpControlConnection_h___

#define nsFtpControlConnection_h___

#include "nsCOMPtr.h"

#include "nsISocketTransport.h"

#include "nsIAsyncInputStream.h"

#include "nsAutoPtr.h"

#include "nsString.h"

#include "mozilla/Attributes.h"

class nsIOutputStream;

class nsIProxyInfo;

class nsITransportEventSink;

class nsFtpControlConnectionListener : public nsISupports {

 public:

  /**

   * Called when a chunk of data arrives on the control connection.

   * @param data

   *        The new data or null if an error occurred.

   * @param dataLen

   *        The data length in bytes.

   */

  virtual void OnControlDataAvailable(const char* data, uint32_t dataLen) = 0;

  /**

   * Called when an error occurs on the control connection.

   * @param status

   *        A failure code providing more info about the error.

   */

  virtual void OnControlError(nsresult status) = 0;

};

class nsFtpControlConnection final : public nsIInputStreamCallback {

  ~nsFtpControlConnection();

 public:

  NS_DECL_ISUPPORTS

  NS_DECL_NSIINPUTSTREAMCALLBACK

  nsFtpControlConnection(const nsACString& host, uint32_t port);

  nsresult Connect(nsIProxyInfo* proxyInfo, nsITransportEventSink* eventSink);

  nsresult Disconnect(nsresult status);

  nsresult Write(const nsACString& command);

  bool IsAlive();

  nsITransport* Transport() { return mSocket; }

  /**

   * Call this function to be notified asynchronously when there is data

   * available for the socket.  The listener passed to this method replaces

   * any existing listener, and the listener can be null to disconnect the

   * previous listener.

   */

  nsresult WaitData(nsFtpControlConnectionListener* listener);

  uint32_t mServerType;  // what kind of server is it.

  nsString mPassword;

  int32_t mSuspendedWrite;

  nsCString mPwd;

  uint32_t mSessionId;

  bool mUseUTF8;

 private:

  nsCString mHost;

  uint32_t mPort;

  nsCOMPtr<nsISocketTransport> mSocket;

  nsCOMPtr<nsIOutputStream> mSocketOutput;

  nsCOMPtr<nsIAsyncInputStream> mSocketInput;

  RefPtr<nsFtpControlConnectionListener> mListener;

};

#endif