public IActionResult Authenticate([FromBody] GetAuthorDto authorDto)
        {
            var author = _authorService.Authenticate(authorDto.Username, authorDto.Password);

            if (author == null)
            {
                return(BadRequest("Authorname or password is incorrect"));
            }

            var tokenHandler    = new JwtSecurityTokenHandler();
            var key             = Encoding.ASCII.GetBytes(_appSettings.Secret);
            var tokenDescriptor = new SecurityTokenDescriptor
            {
                Subject = new ClaimsIdentity(new Claim[]
                {
                    new Claim(ClaimTypes.Name, author.AuthorId.ToString())
                }),
                Expires            = DateTime.UtcNow.AddDays(7),
                SigningCredentials = new SigningCredentials(new SymmetricSecurityKey(key), SecurityAlgorithms.HmacSha256Signature)
            };
            var token       = tokenHandler.CreateToken(tokenDescriptor);
            var tokenString = tokenHandler.WriteToken(token);

            // return basic author info (without password) and token to store client side
            return(Ok(new
            {
                Id = author.AuthorId,
                author.Username,
                author.FirstName,
                author.LastName,
                Token = tokenString
            }));
        }
        public IActionResult Register([FromBody] GetAuthorDto authorDto)
        {
            // map dto to entity
            var author = _mapper.Map <Author>(authorDto);

            try
            {
                // save
                _authorService.Create(author, authorDto.Password);
                return(Ok());
            }
            catch (AppException ex)
            {
                // return error message if there was an exception
                return(BadRequest(ex.Message));
            }
        }
        public IActionResult Update(int id, [FromBody] GetAuthorDto authorDto)
        {
            // map dto to entity and set id
            var author = _mapper.Map <Author>(authorDto);

            author.AuthorId = id;

            try
            {
                // save
                _authorService.Update(author, authorDto.Password);
                return(Ok());
            }
            catch (AppException ex)
            {
                // return error message if there was an exception
                return(BadRequest(ex.Message));
            }
        }