Login.cs

 [HttpPost("Login")]
        public async Task<IActionResult> Login(LoginViewModel model)
        {
            var user = await _userManager.FindByNameAsync(model.UserName);

            if (user is null)
                return BadRequest("User Not Found");

            var passwordValidator = await _userManager.CheckPasswordAsync(user, model.Password);

            if (!passwordValidator)
                return BadRequest("Password is not valid");

            var token = await _jwtService.GenerateAsync(user);

            return Ok(token);
        }