/* 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 "token.h"
 #include "user.h"

 #include "sys_fstream.h"

 
 namespace
 {

 class user_token_supplier_impl : public user_token_supplier_ifc

 {
 private:

     fstreams fstreams_;

 public:

     user_token_supplier_impl (fstreams &fstreams) :
         fstreams_(fstreams) {}

     std::string token (user &user)
     {

         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());

     }
 };

 }

 user_token_supplier user_token_supplier::create (fstreams &fstreams)

 {

     return user_token_supplier (user_token_supplier::delegate

                                 (new user_token_supplier_impl (fstreams)));

 }