/* 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 <functional>
 #include <memory>
 #include <string>
 #include <vector>
 

 #include "installer.h"

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

 class mock_tokens : public tokens_ifc
 {
 public:
     mutable std::string captured_token;
     void save (const user &user, const std::string &token) const override
     {
         captured_token = token;
     }

 };
 

 class fake_unistd : public unistd_ifc
 {
 private:
     std::string user_name_;
 public:
     fake_unistd (const std::string &user_name) : user_name_ (user_name) {}
     const char *getlogin() const override
     {
         return user_name_.c_str();
     }

 };

 class fail_unistd : public unistd_ifc
 {
 public:
     const char *getlogin() const override
     {
         return nullptr;
     }

 };
 

 class fake_directory : public directory_ifc
 {
 private:
     std::string expected_user_name_;
 public:
     fake_directory (const std::string &expected_user_name) :
         expected_user_name_ (expected_user_name)
     {
     }
     std::vector<user> find_user (const std::string &user_name) const override
     {
         std::vector<user> rval;
 
         if (user_name == expected_user_name_) {
             rval.push_back (user());

         }
 

         return rval;
     }
 

 };
 

 int installs_token()
 {

     //given

     std::string user_name ("user");
     std::string token ("token");

     auto  test_tokens = std::make_shared<mock_tokens>();
     tokens tokens{test_tokens};

     unistd unistd (std::make_shared<fake_unistd> (user_name));
     directory directory (std::make_shared<fake_directory> (user_name));

     generator generator = [&] { return token; };

     installer installer = installer::create (tokens, unistd, directory,
                           generator);

 
     //when

     std::string result = installer.install_token();

 
     //then

     check (test_tokens->captured_token == token, "installed wrong token");
     check (result == token, "installer returned wrong token");

     succeed();

 }
 

 int unistd_does_not_find_user_name_nullptr_case()

 {

     //given

     std::string user_name ("user");
     std::string token ("token");

     auto  test_tokens = std::make_shared<mock_tokens>();
     tokens tokens{test_tokens};

     unistd unistd (std::make_shared<fail_unistd>());
     directory directory (std::make_shared<fake_directory> (user_name));

     generator generator = [&] { return token; };

     installer installer = installer::create (tokens, unistd, directory,
                           generator);

 
     //when

     auto returned = installer.install_token();

     //then

     check (test_tokens->captured_token == "",
            "should not have installed a token");
     check (returned == "", "did not return empty token");

     succeed();
 }

 int unistd_does_not_find_user_name_empty_string_case()
 {
     //given
     std::string user_name ("user");
     std::string token ("token");
     auto  test_tokens = std::make_shared<mock_tokens>();
     tokens tokens{test_tokens};
     unistd unistd (std::make_shared<fake_unistd> (""));
     directory directory (std::make_shared<fake_directory> (user_name));
     generator generator = [&] { return token; };
 
     installer installer = installer::create (tokens, unistd, directory,
                           generator);
 
     //when
     auto returned = installer.install_token();
 
     //then
     check (test_tokens->captured_token == "",
            "should not have installed a token");
     check (returned == "", "did not return empty token");
     succeed();
 }
 

 int directory_finds_no_user_info()
 {
     std::string user_name ("user");
     std::string token ("token");

     auto  test_tokens = std::make_shared<mock_tokens>();
     tokens tokens{test_tokens};

     unistd unistd (std::make_shared<fake_unistd> (user_name));
     directory directory (std::make_shared<fake_directory> ("not the user"));

     generator generator = [&] { return token; };

     installer installer = installer::create (tokens, unistd, directory,
                           generator);

 
     //when

     auto returned = installer.install_token();

 
     //then

     check (test_tokens->captured_token == "", "installed wrong token");
     check (returned == "", "did not return empty token");

     succeed();
 }
 

 int run_tests()
 {

     test (installs_token);

     test (unistd_does_not_find_user_name_nullptr_case);

     test (unistd_does_not_find_user_name_empty_string_case);
     test (directory_finds_no_user_info);

     succeed();
 }
 

 int main (int argc, char *argv[])
 {

     return !run_tests();
 }