Add quantity param to send_using_amount

Author: slanesuke

bindings/ldk_node.udl

@@ -122,7 +122,7 @@ interface Bolt12Payment {
 	[Throws=NodeError]
 	PaymentId send([ByRef]Offer offer, u64? quantity, string? payer_note);
 	[Throws=NodeError]
-	PaymentId send_using_amount([ByRef]Offer offer, string? payer_note, u64 amount_msat);
+	PaymentId send_using_amount([ByRef]Offer offer, u64? quantity, string? payer_note, u64 amount_msat);
 	[Throws=NodeError]
 	Offer receive(u64 amount_msat, [ByRef]string description);
 	[Throws=NodeError]

src/payment/bolt12.rs

@@ -150,14 +150,13 @@ impl Bolt12Payment {
 	/// If `payer_note` is `Some` it will be seen by the recipient and reflected back in the invoice
 	/// response.
 	pub fn send_using_amount(
-		&self, offer: &Offer, payer_note: Option<String>, amount_msat: u64,
+		&self, offer: &Offer, quantity: Option<u64>, payer_note: Option<String>, amount_msat: u64,
 	) -> Result<PaymentId, Error> {
 		let rt_lock = self.runtime.read().unwrap();
 		if rt_lock.is_none() {
 			return Err(Error::NotRunning);
 		}
 
-		let quantity = None;
 		let mut random_bytes = [0u8; 32];
 		rand::thread_rng().fill_bytes(&mut random_bytes);
 		let payment_id = PaymentId(random_bytes);

tests/integration_tests_rust.rs

@@ -467,10 +467,12 @@ fn simple_bolt12_send_receive() {
 	let offer = node_b.bolt12_payment().receive(offer_amount_msat, "asdf").unwrap();
 	assert!(node_a
 		.bolt12_payment()
-		.send_using_amount(&offer, None, less_than_offer_amount)
+		.send_using_amount(&offer, None, None, less_than_offer_amount)
 		.is_err());
-	let payment_id =
-		node_a.bolt12_payment().send_using_amount(&offer, None, expected_amount_msat).unwrap();
+	let payment_id = node_a
+		.bolt12_payment()
+		.send_using_amount(&offer, None, None, expected_amount_msat)
+		.unwrap();
 
 	expect_payment_successful_event!(node_a, Some(payment_id), None);
 	let node_a_payments = node_a.list_payments_with_filter(|p| p.id == payment_id);