/// <inheritdoc />
public async Task RefreshBalanceAsync(IAgentContext agentContext, PaymentAddressRecord paymentAddress = null)
{
if (paymentAddress == null)
{
var provisioning = await provisioningService.GetProvisioningAsync(agentContext.Wallet);
if (provisioning.DefaultPaymentAddressId == null)
{
throw new AgentFrameworkException(ErrorCode.RecordNotFound, "Default PaymentAddressRecord not found");
}
paymentAddress = await recordService.GetAsync <PaymentAddressRecord>(agentContext.Wallet, provisioning.DefaultPaymentAddressId);
}
// Cache sources data in record for one hour
var request = await IndyPayments.BuildGetPaymentSourcesAsync(agentContext.Wallet, null, paymentAddress.Address);
var response = await Ledger.SubmitRequestAsync(await agentContext.Pool, request.Result);
var sourcesJson = await Indy.Payments.ParseGetPaymentSourcesAsync(paymentAddress.Method, response);
var sources = sourcesJson.ToObject <IList <IndyPaymentInputSource> >();
paymentAddress.Sources = sources;
paymentAddress.SourcesSyncedAt = DateTime.Now;
await recordService.UpdateAsync(agentContext.Wallet, paymentAddress);
}
private async Task <IDictionary <string, ulong> > GetTransactionFeesAsync(IAgentContext agentContext)
{
if (_transactionFees == null)
{
var feesRequest = await IndyPayments.BuildGetTxnFeesRequestAsync(agentContext.Wallet, null, TokenConfiguration.MethodName);
var feesResponse = await Ledger.SubmitRequestAsync(await agentContext.Pool, feesRequest);
var feesParsed = await IndyPayments.ParseGetTxnFeesResponseAsync(TokenConfiguration.MethodName, feesResponse);
_transactionFees = feesParsed.ToObject <IDictionary <string, ulong> >();
}
return(_transactionFees);
}
/// <inheritdoc />
public async Task <PaymentAddressRecord> CreatePaymentAddressAsync(IAgentContext agentContext, AddressOptions configuration = null)
{
var address = await IndyPayments.CreatePaymentAddressAsync(agentContext.Wallet, TokenConfiguration.MethodName,
new { seed = configuration?.Seed }.ToJson());
var addressRecord = new PaymentAddressRecord
{
Id = Guid.NewGuid().ToString("N"),
Method = TokenConfiguration.MethodName,
Address = address,
SourcesSyncedAt = DateTime.MinValue
};
await recordService.AddAsync(agentContext.Wallet, addressRecord);
return(addressRecord);
}
public async Task <bool> VerifyPaymentAsync(IAgentContext context, PaymentRecord paymentRecord)
{
if (paymentRecord.State != PaymentState.Paid && paymentRecord.State != PaymentState.ReceiptReceived)
{
throw new AgentFrameworkException(ErrorCode.RecordInInvalidState,
"Payment record must be in state Paid or ReceiptReceived to verify it");
}
var req = await IndyPayments.BuildVerifyPaymentRequestAsync(context.Wallet, null, paymentRecord.ReceiptId);
var res = await Ledger.SubmitRequestAsync(await context.Pool, req.Result);
var resParsed = JObject.Parse(await IndyPayments.ParseVerifyPaymentResponseAsync("sov", res));
var receipts = resParsed["receipts"].ToObject <IList <IndyPaymentOutputSource> >()
.Where(x => x.Recipient == paymentRecord.Address)
.ToList();
if (receipts.Any() && receipts.Select(x => x.Amount).Aggregate((x, y) => x + y) == paymentRecord.Amount)
{
return(true);
}
return(false);
}
/// <inheritdoc />
public async Task MakePaymentAsync(IAgentContext agentContext, PaymentRecord paymentRecord,
PaymentAddressRecord addressFromRecord = null)
{
if (paymentRecord.Amount == 0)
{
throw new AgentFrameworkException(ErrorCode.InvalidRecordData, "Cannot make a payment with 0 amount");
}
await paymentRecord.TriggerAsync(PaymentTrigger.ProcessPayment);
if (paymentRecord.Address == null)
{
throw new AgentFrameworkException(ErrorCode.InvalidRecordData, "Payment record is missing an address");
}
var provisioning = await provisioningService.GetProvisioningAsync(agentContext.Wallet);
if (addressFromRecord == null)
{
addressFromRecord = await GetDefaultPaymentAddressAsync(agentContext);
}
await RefreshBalanceAsync(agentContext, addressFromRecord);
if (addressFromRecord.Balance < paymentRecord.Amount)
{
throw new AgentFrameworkException(ErrorCode.PaymentInsufficientFunds,
"Address doesn't have enough funds to make this payment");
}
var txnFee = await GetTransactionFeeAsync(agentContext, TransactionTypes.XFER_PUBLIC);
var paymentResult = await IndyPayments.BuildPaymentRequestAsync(
wallet : agentContext.Wallet,
submitterDid : null,
inputsJson : addressFromRecord.Sources.Select(x => x.Source).ToJson(),
outputsJson : new[]
{
new IndyPaymentOutputSource
{
Amount = paymentRecord.Amount,
Recipient = paymentRecord.Address
},
new IndyPaymentOutputSource
{
Recipient = addressFromRecord.Address,
Amount = addressFromRecord.Balance - paymentRecord.Amount - txnFee
}
}.ToJson(),
extra : null);
var response = await Ledger.SignAndSubmitRequestAsync(await agentContext.Pool, agentContext.Wallet,
provisioning.Endpoint.Did, paymentResult.Result);
var paymentResponse = await IndyPayments.ParsePaymentResponseAsync(TokenConfiguration.MethodName, response);
var paymentOutputs = paymentResponse.ToObject <IList <IndyPaymentOutputSource> >();
var paymentOutput = paymentOutputs.SingleOrDefault(x => x.Recipient == paymentRecord.Address);
paymentRecord.ReceiptId = paymentOutput.Receipt;
addressFromRecord.Sources = paymentOutputs
.Where(x => x.Recipient == addressFromRecord.Address)
.Select(x => new IndyPaymentInputSource
{
Amount = x.Amount,
PaymentAddress = x.Recipient,
Source = x.Receipt
})
.ToList();
await recordService.UpdateAsync(agentContext.Wallet, paymentRecord);
await recordService.UpdateAsync(agentContext.Wallet, addressFromRecord);
}
