// $Id$
//-----------------------------------------------------------------------
//       The GSI Online Offline Object Oriented (Go4) Project
//         Experiment Data Processing at EE department, GSI
//-----------------------------------------------------------------------
// Copyright (C) 2000- GSI Helmholtzzentrum fuer Schwerionenforschung GmbH
//                     Planckstr. 1, 64291 Darmstadt, Germany
// Contact:            http://go4.gsi.de
//-----------------------------------------------------------------------
// This software can be used under the license agreements as stated
// in Go4License.txt file which is part of the distribution.
//-----------------------------------------------------------------------

#ifndef TGO4OBJCLIENT_H
#define TGO4OBJCLIENT_H

#include "TNamed.h"

class TGo4AnalysisObjectNames;
class TGo4Socket;
class TBuffer;

/**
 * Client for the go4 object server delivering root objects.
 * @author J. Adamczewski
 * @since 17-Jan-2003
 */

class TGo4ObjClient : public TNamed {
   public:

      TGo4ObjClient();

      TGo4ObjClient(const char *clientname,
                    const char *base = nullptr,
                    const char *passwd = nullptr,
                    const char *host = nullptr,
                    Int_t port = 0);

      virtual ~TGo4ObjClient();

      /**  Get nameslist object from client.
        *  basename, password,host and portnumber may be specified at any time new
        * if left out (default), the previously stored values are used */
      TGo4AnalysisObjectNames *RequestNamesList(const char *base = nullptr,
                                                const char *passwd = nullptr,
                                                const char *host = nullptr,
                                                Int_t port = 0);

       /**  Get object by name from client.
        *  basename, password, host and portnumber may be specified at any time new
        * if left out (default), the previously stored values are used */
      TObject *RequestObject(const char *objectname,
                             const char *base = nullptr,
                             const char *passwd = nullptr,
                             const char *host = nullptr,
                             Int_t port = 0);

      void SetBase(const char *serverbase) { fxServerName = serverbase; }
      void SetPasswd(const char *serverpasswd) { fxServerPass = serverpasswd; }
      void SetHost(const char *serverhost) { fxHostname = serverhost; }
      void SetPort(Int_t port) { fiPort = port; }

      const char *GetBase() const { return fxServerName.Data(); }
      const char *GetPasswd() const { return fxServerPass.Data(); }
      const char *GetHost() const { return fxHostname.Data(); }
      Int_t GetPort() const { return fiPort; }

   protected:

      /**  Send (command) string to server. Command may be just name of requested object*/
      void SendCommand(const char *com);

      /**  Receive root object streamed from server */
      TObject *ReceiveObject();

   private:

      /**  contains api basename */
      TString fxServerName;

      /**  contains api password */
      TString fxServerPass;

      /**  hostname of the server to connect to */
      TString fxHostname;

      /**  serversocket port number */
      Int_t fiPort{0};

      /**  transport socket for connection to server */
      TGo4Socket  *fxTransport{nullptr}; //!

      /**  Set server parameters if necessary */
      void SetParms(const char *base, const char *passwd,
                    const char *host, Int_t port);

      Int_t ConnectServer();

      Int_t DisconnectServer();

      /**  Receive root buffer containing requested object */
      TBuffer *ReceiveBuffer();

   ClassDefOverride(TGo4ObjClient,1)
};

#endif