/// <summary>
/// Reference https://github.com/hyperledger/aries-framework-dotnet/blob/master/test/Hyperledger.Aries.Tests/Protocols/ProofTests.cs#L644
/// </summary>
public async Task GetRequestedAttributes()
{
try
{
RequestedAttributes.Clear();
if (ProofRequest.RequestedAttributes == null)
{
return;
}
var context = await agentContextProvider.GetContextAsync();
//Get any Available Credentials for each requested attribute
foreach (var requestedAttribute in ProofRequest.RequestedAttributes)
{
List <Credential> attributeCredentials = await proofService.ListCredentialsForProofRequestAsync(context, ProofRequest, requestedAttribute.Key);
var attribute = scope.Resolve <ProofRequestAttributeViewModel>(
new NamedParameter("name", requestedAttribute.Value.Name ?? string.Join(", ", requestedAttribute.Value.Names)),
new NamedParameter("isPredicate", false),
new NamedParameter("attributeCredentials", attributeCredentials),
new NamedParameter("referent", requestedAttribute.Key)
);
RequestedAttributes.Add(attribute);
}
//TODO: Implement Predicate and Restrictions related functionlity
}
catch (Exception xx)
{
}
}
private AuthenticationResults PrepareAuthenticationResultsResponse()
{
RequestedAttributes attributes1 = new RequestedAttributes(CommonTestData.BASIC_USER_INFO, CommonTestData.CUSTOM_IDENTIFIER, CommonTestData.SSN_USER_INFO, null, CommonTestData.DATE_OF_BIRTH, CommonTestData.RELYING_PARTY_USER_ID, CommonTestData.EMAIL, CommonTestData.ORGANISATION_ID);
AuthenticationResult firstResponse = new AuthenticationResult(CommonTestData.REFERENCE, TransactionStatus.STARTED, CommonTestData.DETAILS, attributes1);
RequestedAttributes attributes2 = new RequestedAttributes(null, CommonTestData.CUSTOM_IDENTIFIER, null, null, null, null, null, null);
AuthenticationResult secondResponse = new AuthenticationResult(CommonTestData.REFERENCE, TransactionStatus.DELIVERED_TO_MOBILE, CommonTestData.DETAILS, attributes2);
List <AuthenticationResult> responses = new List <AuthenticationResult> {
firstResponse, secondResponse
};
return(new AuthenticationResults(responses));
}
/// <summary>
/// Reference https://github.com/hyperledger/aries-framework-dotnet/blob/master/src/Hyperledger.Aries.TestHarness/AgentScenarios.cs#L214
/// </summary>
private async Task CreatePresentation()
{
base.IsBusy = true;
var dialog = UserDialogs.Instance.Loading("Presenting Proof...");
try
{
var requestedCredentials = new RequestedCredentials();
var requestedAttributes = RequestedAttributes.Where(x => x.SelectedCredential != null && !x.IsPredicate)
.Select(y => new KeyValuePair <string, RequestedAttribute>(y.AttributeReferent, new RequestedAttribute
{
CredentialId = y.SelectedCredential.Credential.CredentialInfo.Referent,
Revealed = true
})
).ToDictionary(z => z.Key, z => z.Value);
//TODO: Implement Predicate related functionlity
if (requestedAttributes != null && requestedAttributes.Count > 0)
{
requestedCredentials.RequestedAttributes = requestedAttributes;
var context = await agentContextProvider.GetContextAsync();
if (requestPresentationMessage != null)
{
var result = await proofService.CreatePresentationAsync(context, requestPresentationMessage, requestedCredentials);
}
else
{
var(proofMsg, holderRecord) = await proofService.CreatePresentationAsync(context, proofRecord.Id, requestedCredentials);
await messageService.SendAsync(context, proofMsg, connection);
}
}
eventAggregator.Publish(new ApplicationEvent()
{
Type = ApplicationEventType.RefreshProofRequests
});
await NavigationService.NavigateBackAsync();
}
catch (Exception exception)
{
await Application.Current.MainPage.DisplayAlert("Error", exception.Message, "Ok");
}
finally
{
base.IsBusy = false;
dialog?.Hide();
dialog?.Dispose();
}
}
public override string ToString()
{
var sb = new StringBuilder();
sb.Append("SELECT ");
sb.Append(string.Join(",", RequestedAttributes.Select(r => r.ToString())));
sb.Append(" FROM ");
sb.Append(string.Join(",", Source.ToString()));
if (!(WhereClause is NullWhereClause))
{
sb.Append(" WHERE ");
sb.Append(WhereClause);
}
//sb.AppendLine(";");
return(sb.ToString());
}
public AuthenticationResult(string authRef, TransactionStatus status, string details, RequestedAttributes requestedAttributes)
{
this.AuthRef = authRef;
this.Status = status;
this.Details = details;
this.RequestedAttributes = requestedAttributes;
}
