/// <summary>
/// Validates the resource owner password credential.
/// </summary>
/// <param name="context">The context</param>
/// <returns>A task instance</returns>
public Task ValidateAsync(ResourceOwnerPasswordValidationContext context)
{
var validationMonad = _userService
.Validate(context.UserName, context.Password);
var claimsMonad = validationMonad
.Bind(_userService.GetClaims);
switch (claimsMonad)
{
case Success <IEnumerable <Claim>, Error> claims:
var user = (validationMonad as Success <User, Error>) !.Value;
context.Result = new GrantValidationResult(user.Id.ToString(),
OidcConstants.AuthenticationMethods.Password,
_clock.UtcNow.UtcDateTime,
claims: claims.Value);
break;
case Failure <IEnumerable <Claim>, Error> _:
var error = UserErrors.UserPasswordDidNotMatch();
context.Result = new GrantValidationResult(TokenRequestErrors.InvalidGrant, error.Message);
break;
default:
break;
}
return(Task.CompletedTask);
}