private async Task AcceptProofRequest()
{
if (_proofRecord.State != ProofState.Requested)
{
await DialogService.AlertAsync(string.Format(AppResources.ProofStateShouldBeMessage, ProofStateTranslator.Translate(ProofState.Requested)));
return;
}
RequestedCredentials requestedCredentials = new RequestedCredentials()
{
RequestedAttributes = new Dictionary <string, RequestedAttribute>(),
RequestedPredicates = new Dictionary <string, RequestedAttribute>()
};
foreach (ProofAttributeViewModel proofAttribute in Attributes)
{
if (proofAttribute.IsPredicate)
{
requestedCredentials.RequestedPredicates.Add(proofAttribute.Id, new RequestedAttribute {
CredentialId = proofAttribute.CredentialId, Revealed = proofAttribute.IsRevealed
});
}
else
{
requestedCredentials.RequestedAttributes.Add(proofAttribute.Id, new RequestedAttribute {
CredentialId = proofAttribute.CredentialId, Revealed = proofAttribute.IsRevealed
});
}
}
// TODO: Mettre le Timestamp à null car lorsqu'il est présent, la création de la preuve ne marche pas. Pourquoi?
//foreach (var keyValue in requestedCredentials.RequestedAttributes.Values)
//{
// keyValue.Timestamp = null;
//}
var context = await _agentContextProvider.GetContextAsync();
ProofRecord proofRecord = await _recordService.GetAsync <ProofRecord>(context.Wallet, _proofRecord.Id);
var(msg, rec) = await _proofService.CreatePresentationAsync(context, proofRecord.Id, requestedCredentials);
if (string.IsNullOrEmpty(proofRecord.ConnectionId))
{
await _messageService.SendAsync(context.Wallet, msg, proofRecord.GetTag("RecipientKey"), proofRecord.GetTag("ServiceEndpoint"));
}
else
{
ConnectionRecord connectionRecord = await _recordService.GetAsync <ConnectionRecord>(context.Wallet, proofRecord.ConnectionId);
await _messageService.SendAsync(context.Wallet, msg, connectionRecord);
}
_eventAggregator.Publish(new ApplicationEvent {
Type = ApplicationEventType.ProofRequestUpdated
});
await NavigationService.PopModalAsync();
}
private async Task SelectCredentialsForProofAsync(IAgentContext agentContext, ProofRecord proof, ConnectionRecord connection)
{
var requestJson = (JObject)JsonConvert.DeserializeObject(proof.RequestJson);
JObject _requestedAttributes = (JObject)requestJson["requested_attributes"];
JObject _requestedPredicates = (JObject)requestJson["requested_predicates"];
IList <string> _requestedAttributesKeys = _requestedAttributes?.Properties().Select(p => p.Name).ToList();
IList <string> _requestedPredicatesKeys = _requestedPredicates?.Properties().Select(p => p.Name).ToList();
JToken cred_def_id = null;
try
{
cred_def_id = _requestedAttributes[_requestedAttributesKeys[0]]["restrictions"][0]["cred_def_id"];
}
catch (Exception)
{
cred_def_id = null;
}
var credentials = new List <CredentialRecord>();
if (cred_def_id != null)
{
credentials = await RecordService.SearchAsync <CredentialRecord>(agentContext.Wallet,
SearchQuery.And(SearchQuery.Equal(nameof(CredentialRecord.State), CredentialState.Issued.ToString("G")),
SearchQuery.Equal(nameof(CredentialRecord.CredentialDefinitionId), cred_def_id.ToString())), null, 100);
}
else
{
credentials = await RecordService.SearchAsync <CredentialRecord>(agentContext.Wallet,
SearchQuery.Equal(nameof(CredentialRecord.State), CredentialState.Issued.ToString("G")), null, 100);
}
bool credentialFound = false;
if (credentials.Count > 0)
{
Dictionary <string, RequestedAttribute> requestedAttributes = new Dictionary <string, RequestedAttribute>();
Dictionary <string, RequestedAttribute> requestedPredicates = new Dictionary <string, RequestedAttribute>();
foreach (var credential in credentials)
{
if (!credentialFound)
{
IEnumerable <CredentialAttribute> Attributes = credential.CredentialAttributesValues
.Select(p =>
new CredentialAttribute()
{
Name = p.Name,
Value = p.Value?.ToString(),
Type = "Text"
})
.ToList();
foreach (var item in _requestedAttributesKeys)
{
foreach (var attrib in Attributes)
{
if (_requestedAttributes[item]["name"].ToString() == attrib.Name)
{
RequestedAttribute requestedAttribute = new RequestedAttribute();
requestedAttribute.CredentialId = credential.CredentialId;
requestedAttribute.Revealed = true;
requestedAttribute.Timestamp = ((DateTimeOffset)DateTime.UtcNow).ToUnixTimeMilliseconds();
requestedAttributes.Add(item, requestedAttribute);
credentialFound = true;
}
}
if (!credentialFound)
{
requestedAttributes.Clear();
}
}
foreach (var item in _requestedPredicatesKeys)
{
RequestedAttribute requestedAttribute = new RequestedAttribute();
requestedAttribute.CredentialId = credential.CredentialId;
requestedAttribute.Timestamp = ((DateTimeOffset)DateTime.UtcNow).ToUnixTimeMilliseconds();
requestedPredicates.Add(item, requestedAttribute);
}
}
}
if (credentialFound)
{
RequestedCredentials requestedCredentials = new RequestedCredentials();
requestedCredentials.RequestedAttributes = requestedAttributes;
requestedCredentials.RequestedPredicates = requestedPredicates;
var proofJson = await CreateProofJsonAsync(agentContext, requestedCredentials, proof.RequestJson);
var threadId = proof.GetTag(TagConstants.LastThreadId);
var proofMsg = new ProofMessage
{
ProofJson = proofJson
};
proofMsg.ThreadFrom(threadId);
await MessageService.SendAsync(agentContext.Wallet, proofMsg, connection);
}
}
}
