/* Copyright (C) CJ Affiliate
  *
  * You may use, distribute and modify this code under  the

  * terms of the  GNU General Public License version 2  or

  * later.
  *
  * You should have received a copy of the license with this
  * file. If not, you will find a copy in the "LICENSE" file
  * at https://github.com/cjdev/dual-control.
  */
 

 #include <string>
 #include <vector>
 #include <memory>

 #include <fstream>

 #include <iostream>
 #include <functional>

 #include "token.h"
 #include "user.h"

 #include "sys_fstream.h"

 
 namespace
 {

 class tokens_impl : public tokens_ifc

 {
 private:

     fstreams fstreams_;

 public:

     tokens_impl (const fstreams &fstreams) :

         fstreams_ (fstreams) {}

     std::string token (const user &user) const override

     {

         const std::string file_path (user.home_directory() + "/.dual_control");

         std::vector<char> line (7);

         fstreams::pstream stream (fstreams_.open_fstream (file_path));

         if (!stream->good()) {

             return "";
         }
 

         stream->getline (line.data(), line.size());
         return std::string (line.data());

     }

     void save (const user &user, const std::string &token) const override

     {
         std::string file_path (user.home_directory() + "/.dual_control");
         fstreams::postream stream (fstreams_.open_ofstream (file_path,
                                    std::ios_base::trunc));

         *stream << token << std::endl;

     }

 };

 }

 tokens tokens::create (const fstreams &fstreams)

 {

     return tokens (tokens::delegate

                    (new tokens_impl (fstreams)));

 }