handle method

@override Future<Presentation> handle(DidcommMessage message)

Actual handling method. variables can be expected to be non-null as configured

Implementation

@override
Future<Presentation> handle(DidcommMessage message) async {

  var requestPresentation = RequestPresentation.fromJson(message.toJson());

  var res = await searchForMatchingCredentials(
      message: requestPresentation,
      wallet: wallet!,
  );

  var allCredentialFlattened =
    res.fold(<VerifiableCredential>[],
        (List<VerifiableCredential> l, FilterResult e) =>
          l..addAll(e.credentials));

  List<FilterResult> finalSend = [];
  for (var result in res) {
    finalSend.add(FilterResult(
        credentials: allCredentialFlattened,
        matchingDescriptorIds: result.matchingDescriptorIds,
        presentationDefinitionId: result.presentationDefinitionId,
        submissionRequirement: result.submissionRequirement));
  }

  var vp = await buildPresentation(finalSend, wallet!,
      requestPresentation.presentationDefinition.first.challenge);

  var presentationMessage = Presentation(
      to: [requestPresentation.from!],
      replyTo: replyTo,
      verifiablePresentation: [VerifiablePresentation.fromJson(vp)],
      threadId: requestPresentation.threadId ?? requestPresentation.id);

  return presentationMessage;
}