/* 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 <memory>
#include <cstring>
#include <pwd.h>
#include <cstdio>
#include <sys/stat.h>
#include <fstream>
#include <istream>

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

class fake_file_reader : public file_reader_ifc
{
private:
    std::string file_path_;
public:
    bool open (std::ifstream &token_file, const std::string &file_path)
    {
        file_path_ = file_path;
        return true;
    }
    std::string getline (std::ifstream &token_file, std::string &fetched_token)
    {
        return file_path_;
    }
};

class file_reader_with_open_fail : public file_reader_ifc {
    public:
        bool open (std::ifstream &token_file, std::string &fetched_token) {
            return false;
        }
};

class fake_user : public user_ifc
{
private:
    std::string home_directory_;
public:
    fake_user() {}
    fake_user (std::string &user_name) :
        home_directory_ ("home/" + user_name)
    {
    }
    std::string home_directory()
    {
        return home_directory_;
    }
};

int reads_from_the_right_file ()
{
    //given
    std::string user_name = "user";
    std::string expected = "home/" + user_name + "/.dual_control";
    file_reader test_file_reader (file_reader::delegate (new fake_file_reader));
    user test_user (user::delegate (new fake_user (user_name)));
    user_token_supplier supplier (user_token_supplier::create (
                                      test_file_reader));

    //when
    std::string actual = supplier.token (test_user);

    //then
    check (actual == expected, "read wrong file");
    succeed();
}

int returns_empty_string_if_file_open_fail() {
    //given
    file_reader test_file_reader (file_reader::delegate (new file_reader_with_open_fail));
    user test_user (user::delegate (new fake_user));
    user_token_supplier supplier (user_token_supplier::create (
                                      test_file_reader));

    //when
    std::string actual = supplier.token (test_user);

    //then
    check(actual == "", "should have returned empty string");
    succeed();
}

RESET_VARS_START
RESET_VARS_END

int run_tests()
{
    test (reads_from_the_right_file);
    test (returns_empty_string_if_file_open_fail);
    succeed();
}

int main (int argc, char *argv[])
{
    return !run_tests();
}