#include <string>
 #include <vector>
 
 #include "installer.h"
 #include "token.h"
 #include "sys_unistd.h"
 #include "user.h"
 
 namespace {
 
 class impl : public installer_ifc {
     private:
         tokens tokens_;
         unistd unistd_;
         directory directory_;
         generator generator_;
     public:
         impl(const tokens &tokens, const unistd &unistd,
             const directory &directory, const installer_ifc::generator &generator) :
             tokens_(tokens), unistd_(unistd), directory_(directory), generator_(generator) {}
         std::string install_token() const override {

             const char *c_user_name = unistd_.getlogin();
             if (c_user_name == nullptr) {
                 return "";
             }
 
             std::string user_name = c_user_name;
 

             auto found_user = directory_.find_user(user_name);

             if (found_user.empty()) {
                 return "";
             }
 

             user user(found_user[0]);
             std::string token(generator_());
             tokens_.save(user, token);

             return token;

         }
 };
 
 }
 
 
 installer installer::create(const tokens &tokens, const unistd &unistd,
         const directory &directory, const installer_ifc::generator &generator) {
     return installer(std::make_shared<impl>(tokens, unistd, directory, generator));
 }