public async Task SendPaymentRequest()
{
// Create two agent hosts and establish pairwise connection between them
var agents = await InProcAgent.CreatePairedAsync(true);
// Get each agent payment address records
var paymentAddress1 = await agents.Agent1.Payments.GetDefaultPaymentAddressAsync(agents.Agent1.Context);
var paymentAddress2 = await agents.Agent2.Payments.GetDefaultPaymentAddressAsync(agents.Agent2.Context);
// Internal reference number for this payment
const string paymentReference = "INVOICE# 0001";
// Setup a basic use case for payments by using basic messages
// Any AgentMessage can be used to attach payment requests and receipts
var basicMessage = new BasicMessage {
Content = "This is payment request"
};
// Attach the payment request to the agent message
var paymentRecord1 = await agents.Agent1.Payments.AttachPaymentRequestAsync(
context : agents.Agent1.Context,
agentMessage : basicMessage,
details : new PaymentDetails
{
Id = paymentReference,
Items = new List <PaymentItem>
{
new PaymentItem {
Label = "Item 1", Amount = 8
},
new PaymentItem {
Label = "Tax", Amount = 2
}
},
Total = new PaymentItem
{
Amount = new PaymentAmount
{
Currency = "sov",
Value = 10
},
Label = "Total"
}
},
payeeAddress : paymentAddress1);
// PaymentRecord expectations
Assert.NotNull(paymentRecord1);
Assert.Equal(10UL, paymentRecord1.Amount);
Assert.Equal(paymentAddress1.Address, paymentRecord1.Address);
Assert.Equal(PaymentState.Requested, paymentRecord1.State);
// Ensure the payment request is attached to the message
var decorator = basicMessage.FindDecorator <PaymentRequestDecorator>("payment_request");
Assert.NotNull(decorator);
// Send the message to agent 2
await agents.Agent1.Messages.SendAsync(agents.Agent1.Context.Wallet, basicMessage, agents.Connection1);
// Find the payment record in the context of agent 2
var search = await agents.Agent2.Records.SearchAsync <PaymentRecord>(
wallet : agents.Agent2.Context.Wallet,
query : SearchQuery.And(
SearchQuery.Equal(nameof(PaymentRecord.ReferenceId), paymentReference),
SearchQuery.Equal(nameof(PaymentRecord.ConnectionId), agents.Connection2.Id)));
var paymentRecord2 = search.FirstOrDefault();
Assert.Single(search);
Assert.NotNull(paymentRecord2);
Assert.Equal(PaymentState.RequestReceived, paymentRecord2.State);
// Fund payment address of agent 2 so we can make payment to agent 1
await FundAccountAsync(50UL, paymentAddress2.Address);
// Refresh balance to ensure it is funded correctly
await agents.Agent2.Payments.RefreshBalanceAsync(agents.Agent2.Context, paymentAddress2);
Assert.Equal(50UL, paymentAddress2.Balance);
// Make payment for received request
await agents.Agent2.Payments.MakePaymentAsync(agents.Agent2.Context, paymentRecord2, paymentAddress2);
Assert.Equal(PaymentState.Paid, paymentRecord2.State);
Assert.Equal(40UL, paymentAddress2.Balance);
Assert.NotNull(paymentRecord2.ReceiptId);
// Send a basic message back to agent 1 and attach a payment receipt
var message2 = new BasicMessage {
Content = "Here's a receipt"
};
// Attach a payment receipt to the basic message
// Receipts can be attached to any agent message
agents.Agent2.Payments.AttachPaymentReceipt(agents.Agent2.Context, message2, paymentRecord2);
// Send the message to agent 1
await agents.Agent2.Messages.SendAsync(agents.Agent2.Context.Wallet, message2, agents.Connection2);
// Fetch payment record 1 again, to refresh state
paymentRecord1 = await agents.Agent1.Records.GetAsync <PaymentRecord>(agents.Agent1.Context.Wallet, paymentRecord1.Id);
// Check payment record 1 for receipt
Assert.Equal(PaymentState.ReceiptReceived, paymentRecord1.State);
Assert.NotNull(paymentRecord1.ReceiptId);
// Check agent 1 balance
await agents.Agent1.Payments.RefreshBalanceAsync(agents.Agent1.Context, paymentAddress1);
Assert.Equal(10UL, paymentAddress1.Balance);
// Verify the payment receipt on the ledger
var verified = await agents.Agent1.Payments.VerifyPaymentAsync(agents.Agent1.Context, paymentRecord1);
Assert.True(verified);
// Clean things up and shut down hosts gracefully
await agents.Agent1.DisposeAsync();
await agents.Agent2.DisposeAsync();
}
