From a4672f6802f53a11fb553c7b3a3796592fb63d00 Mon Sep 17 00:00:00 2001
From: Roman Dmitrienko <roman@dmitrienko.com>
Date: Fri, 1 Mar 2024 22:37:56 +0100
Subject: [PATCH] Add string-serialized bolt11 invoice to PaymentDetails.

---
 bindings/ldk_node.udl | 1 +
 src/event.rs          | 1 +
 src/lib.rs            | 8 ++++++++
 src/payment_store.rs  | 6 +++++-
 4 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/bindings/ldk_node.udl b/bindings/ldk_node.udl
index ec5d8f993..e353b4054 100644
--- a/bindings/ldk_node.udl
+++ b/bindings/ldk_node.udl
@@ -209,6 +209,7 @@ dictionary PaymentDetails {
 	PaymentDirection direction;
 	PaymentStatus status;
 	LSPFeeLimits? lsp_fee_limits;
+	string? bolt11_invoice;
 };
 
 // [NonExhaustive]
diff --git a/src/event.rs b/src/event.rs
index bf683838a..00b33d274 100644
--- a/src/event.rs
+++ b/src/event.rs
@@ -556,6 +556,7 @@ where
 							direction: PaymentDirection::Inbound,
 							status: PaymentStatus::Succeeded,
 							lsp_fee_limits: None,
+							bolt11_invoice: None,
 						};
 
 						match self.payment_store.insert(payment) {
diff --git a/src/lib.rs b/src/lib.rs
index d0b6e9993..87b6ecb42 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1089,6 +1089,7 @@ impl<K: KVStore + Sync + Send + 'static> Node<K> {
 					direction: PaymentDirection::Outbound,
 					status: PaymentStatus::Pending,
 					lsp_fee_limits: None,
+					bolt11_invoice: Some(invoice.to_string()),
 				};
 				self.payment_store.insert(payment)?;
 
@@ -1109,6 +1110,7 @@ impl<K: KVStore + Sync + Send + 'static> Node<K> {
 							direction: PaymentDirection::Outbound,
 							status: PaymentStatus::Failed,
 							lsp_fee_limits: None,
+							bolt11_invoice: Some(invoice.to_string()),
 						};
 
 						self.payment_store.insert(payment)?;
@@ -1197,6 +1199,7 @@ impl<K: KVStore + Sync + Send + 'static> Node<K> {
 					direction: PaymentDirection::Outbound,
 					status: PaymentStatus::Pending,
 					lsp_fee_limits: None,
+					bolt11_invoice: Some(invoice.to_string()),
 				};
 				self.payment_store.insert(payment)?;
 
@@ -1218,6 +1221,7 @@ impl<K: KVStore + Sync + Send + 'static> Node<K> {
 							direction: PaymentDirection::Outbound,
 							status: PaymentStatus::Failed,
 							lsp_fee_limits: None,
+							bolt11_invoice: Some(invoice.to_string()),
 						};
 						self.payment_store.insert(payment)?;
 
@@ -1273,6 +1277,7 @@ impl<K: KVStore + Sync + Send + 'static> Node<K> {
 					direction: PaymentDirection::Outbound,
 					amount_msat: Some(amount_msat),
 					lsp_fee_limits: None,
+					bolt11_invoice: None,
 				};
 				self.payment_store.insert(payment)?;
 
@@ -1294,6 +1299,7 @@ impl<K: KVStore + Sync + Send + 'static> Node<K> {
 							direction: PaymentDirection::Outbound,
 							amount_msat: Some(amount_msat),
 							lsp_fee_limits: None,
+							bolt11_invoice: None,
 						};
 
 						self.payment_store.insert(payment)?;
@@ -1468,6 +1474,7 @@ impl<K: KVStore + Sync + Send + 'static> Node<K> {
 			direction: PaymentDirection::Inbound,
 			status: PaymentStatus::Pending,
 			lsp_fee_limits: None,
+			bolt11_invoice: Some(invoice.to_string()),
 		};
 
 		self.payment_store.insert(payment)?;
@@ -1595,6 +1602,7 @@ impl<K: KVStore + Sync + Send + 'static> Node<K> {
 			direction: PaymentDirection::Inbound,
 			status: PaymentStatus::Pending,
 			lsp_fee_limits,
+			bolt11_invoice: Some(invoice.to_string()),
 		};
 
 		self.payment_store.insert(payment)?;
diff --git a/src/payment_store.rs b/src/payment_store.rs
index 704966878..6fd13ee5f 100644
--- a/src/payment_store.rs
+++ b/src/payment_store.rs
@@ -39,6 +39,8 @@ pub struct PaymentDetails {
 	///
 	/// [`LdkChannelConfig::accept_underpaying_htlcs`]: lightning::util::config::ChannelConfig::accept_underpaying_htlcs
 	pub lsp_fee_limits: Option<LSPFeeLimits>,
+	/// The invoice that was paid.
+	pub bolt11_invoice: Option<String>,
 }
 
 impl_writeable_tlv_based!(PaymentDetails, {
@@ -48,7 +50,8 @@ impl_writeable_tlv_based!(PaymentDetails, {
 	(4, secret, required),
 	(6, amount_msat, required),
 	(8, direction, required),
-	(10, status, required)
+	(10, status, required),
+	(131072, bolt11_invoice, option),
 });
 
 /// Represents the direction of a payment.
@@ -284,6 +287,7 @@ mod tests {
 			direction: PaymentDirection::Inbound,
 			status: PaymentStatus::Pending,
 			lsp_fee_limits: None,
+			bolt11_invoice: None,
 		};
 
 		assert_eq!(Ok(false), payment_store.insert(payment.clone()));