public async Task <IActionResult> Login(TeacherForLoginDto teacherForLoginDto)
        {
            var teacherFromRepository = await _repository.Login(teacherForLoginDto.Username, teacherForLoginDto.Password);


            if (teacherFromRepository == null)
            {
                return(Unauthorized("Niepoprawna nazwa użytkownika, lub hasło"));
            }


            //create Token
            var claims = new[]

            { new Claim("SubjectID", teacherFromRepository.SubjectID.ToString()),
              new Claim("LastName", teacherFromRepository.LastName),
              new Claim("FirstName", teacherFromRepository.FirstName),
              new Claim("UserRole", teacherFromRepository.UserRole), };
            var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(_config.GetSection("AppSettings:Token").Value));

            var creds = new SigningCredentials(key, SecurityAlgorithms.HmacSha512);

            var tokenDescriptor = new SecurityTokenDescriptor
            {
                Subject            = new ClaimsIdentity(claims),
                Expires            = DateTime.Now.AddHours(10),
                SigningCredentials = creds
            };

            var tokenHandler = new JwtSecurityTokenHandler();
            var token        = tokenHandler.CreateToken(tokenDescriptor);

            return(Ok(new { token = tokenHandler.WriteToken(token) }));
        }
        public async Task <IActionResult> Login(TeacherForLoginDto teacherForLoginDto)
        {
            teacherForLoginDto.Username = teacherForLoginDto.Username.ToLower();

            var teacherFromRepo = await _repo.Login(teacherForLoginDto.Username, teacherForLoginDto.Password);

            if (teacherFromRepo == null)
            {
                return(Unauthorized());
            }

            var claims = new[]
            {
                new Claim(ClaimTypes.NameIdentifier, teacherFromRepo.TeacherId.ToString()),
                new Claim(ClaimTypes.Name, teacherFromRepo.Username),
                new Claim(ClaimTypes.Role, "Teacher")
            };

            var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(_config.GetSection("AppSettings:Token").Value));

            var creds = new SigningCredentials(key, SecurityAlgorithms.HmacSha512Signature);

            var tokenDescriptor = new SecurityTokenDescriptor
            {
                Subject            = new ClaimsIdentity(claims),
                Expires            = DateTime.Now.AddHours(6),
                SigningCredentials = creds
            };

            var tokenHandler = new JwtSecurityTokenHandler();

            var token = tokenHandler.CreateToken(tokenDescriptor);

            return(Ok(new {
                token = tokenHandler.WriteToken(token)
            }));
        }