// [ProducesResponseType(409, Type = typeof(ClientErrorResponse))] public async Task <IActionResult> SignIn(SignInModel model) { var user = await userManager.FindByNameAsync(model.Username) ?? await userManager.FindByEmailAsync(model.Username); if (user != null) { var result = await signInManager.CheckPasswordSignInAsync(user, model.Password, lockoutOnFailure : false); if (result.Succeeded) { return(Ok(await accessTokenProvider.CreateAccessTokenAsync(user))); } } return(this.Error("E_INVALID_CREDENTIALS", "Invalid username or password")); }