#ifndef GNUPLOT_HPP_
#define GNUPLOT_HPP_
/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
// Name        : Log
// Author      : Avi
// Revision    : $Revision: #2 $ 
//
// Copyright 2009-2020 ECMWF.
// This software is licensed under the terms of the Apache Licence version 2.0 
// which can be obtained at http://www.apache.org/licenses/LICENSE-2.0. 
// In applying this licence, ECMWF does not waive the privileges and immunities 
// granted to it by virtue of its status as an intergovernmental organisation 
// nor does it submit to any jurisdiction. 
//
// Description :
/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
#include <string>
#include <boost/core/noncopyable.hpp>
#include "Host.hpp"

namespace ecf {

class Gnuplot : private boost::noncopyable {
public:

   Gnuplot( const std::string& log_file,
            const std::string& host,
            const std::string& port,
            size_t no_of_suites_to_plot = 5
            );

   /// parse the log file and show gnuplot of server load
   /// Include the suite most contributing to the load
   /// generates two files
   ///    o <host>.<port>.gnuplot.dat
   ///    o <host>.<port>.gnuplot.script
  void show_server_load() const;

private:
  std::string log_file_;
  Host        host_;
  std::string port_;
  size_t no_of_suites_to_plot_;

private:

   struct SuiteLoad {
      explicit SuiteLoad(const std::string& name) : suite_name_(name),  request_per_second_(1), total_request_per_second_(1) {}

      std::string suite_name_;
      size_t      request_per_second_;
      size_t      total_request_per_second_;
   };

   /// Returns that path to file created by this function.
   /// The create file is to be used by gnuplot to show the server load.
   ///  Can throw exceptions
   std::string create_gnuplot_file(
            std::vector<SuiteLoad>& suite_vec,
            const std::string& input_data) const;

   /// returns the path to the gnuplot script
   std::string create_gnuplot_script(
            const std::string& path_to_file,
            const std::vector<SuiteLoad>& suite_vec,
            size_t no_of_suites_to_plot,
            const std::string& script) const;

   static bool extract_suite_path(
            const std::string& line,
            bool child_cmd,
            std::vector<SuiteLoad>& suite_vec,
            size_t& column_index   // 0 based
            );
};
}

#endif
