From e0fdb61f94525e963dbe68deb085060559575753 Mon Sep 17 00:00:00 2001
From: Andrei <andrei.i@posteo.de>
Date: Wed, 18 Dec 2024 00:00:00 +0000
Subject: [PATCH] Decode BOLT-12 refund

---
 cli/src/main.rs                  | 3 +++
 invoice-detective/src/decoder.rs | 7 ++++++-
 sample/invoices.csv              | 3 ++-
 sample/refunds.csv               | 1 +
 4 files changed, 12 insertions(+), 2 deletions(-)
 create mode 100644 sample/refunds.csv

diff --git a/cli/src/main.rs b/cli/src/main.rs
index 991b7a3..2ecf870 100644
--- a/cli/src/main.rs
+++ b/cli/src/main.rs
@@ -26,6 +26,9 @@ async fn main() -> Result<()> {
             let findings = invoice_detective.investigate_bolt12(offer)?;
             print_findings(findings)
         }
+        DecodedData::Refund(refund) => {
+            println!("{refund:?}")
+        }
         DecodedData::LnUrl(lnurl) => {
             let invoice = resolve_lnurl(lnurl).await?;
             println!("Investigating invoice: {invoice}");
diff --git a/invoice-detective/src/decoder.rs b/invoice-detective/src/decoder.rs
index 417c49b..f3ede6a 100644
--- a/invoice-detective/src/decoder.rs
+++ b/invoice-detective/src/decoder.rs
@@ -1,5 +1,6 @@
 use anyhow::{anyhow, bail, Result};
 use lightning::offers::offer::Offer;
+use lightning::offers::refund::Refund;
 use lightning_invoice::Bolt11Invoice;
 use lnurl::lightning_address::LightningAddress;
 use lnurl::lnurl::LnUrl;
@@ -15,6 +16,7 @@ use std::time::Duration;
 pub enum DecodedData {
     Invoice(Bolt11Invoice),
     Offer(Offer),
+	Refund(Refund),
     LightningAddress(LightningAddress),
     LnUrl(LnUrl),
 }
@@ -42,13 +44,16 @@ pub fn decode(input: &str) -> Result<DecodedData> {
         println!("Decoding as BOLT12 offer");
         let offer = Offer::from_str(input).map_err(|e| anyhow!("{e:?}"))?;
         DecodedData::Offer(offer)
+    } else if filtered_input.starts_with("lnr") {
+        println!("Decoding as BOLT12 refund (naked invoice request)");
+		let refund = Refund::from_str(input).map_err(|e| anyhow!("{e:?}"))?;
+		DecodedData::Refund(refund)
     } else if input.starts_with("ln") {
         println!("Decoding as BOLT11 invoice");
         let invoice = input.parse::<Bolt11Invoice>()?;
         DecodedData::Invoice(invoice)
     } else {
         // TODO: Support BIP-21.
-        // TODO: Support Invoice request (BOLT12 withdraw usecase).
         bail!("Input is not recognized");
     };
     Ok(decoded_data)
diff --git a/sample/invoices.csv b/sample/invoices.csv
index debaaa3..19d9b83 100644
--- a/sample/invoices.csv
+++ b/sample/invoices.csv
@@ -20,7 +20,8 @@ Custodial Consumer Wallet		Alby	lnbc1431800n1pjcgm4epp5hxr22je783fzcr37d4xp0gn50
 		tippin.me	
 Business Wallet		lipa for Business	LNBC1140N1PJ64FV9PP5C73PHSUA89FAMFEU34NRZCS5QS8WPV303HYGSJJ89LFSN3RD04FQDQL2PSHJGPS9CCRGGZRFPRZQTFQD35HQCGCQZZSXQYZ5VQSP5M6GR4X8389DV3MHLQ9RSNHFZQ4ZVTLH8WTLYQRWPE80PQ9505AQQ9QYYSSQ80HAM8AHTSVTZ8LX5WDYSS4RGNRRQSPZ6Q40USVRTT5EFKT8KGVPZTT0X0KLNPMDP6W2CVELS3T44JZUCPHLN0TU43L7C2GR82KJX2CQNW90TQ
 		OpenNode	
-		IBEX	
+		IBEX
+		tryspeed.com,lnbc1pn4uqvzpp52kcwlwpyyvv8kgcd5jeswa75efvga3awf0m0vqzu09nkpcedzgeqdph2pshjmt9de6zqar0yppkjunrd3jjqnmwv5s9xmmxw3mkzun9ypxycsccqzzsxqzjhsp5z3qu3lm3pzmdgvg85kdf55afw4zja4d4uu47q292csa0ahycc6ps9p4gqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqpqysgqjazpfcme89uvlxteh90h9cawn7520r56t6da3mfq5nk5hwwkg6xj54ut67gzjn573ugn9d5s0t4p7kurd4jhmmy7tx78wz48v7dj05qq2pyha3
 			
 Exchange		Binance	
 		Bitfinex	
diff --git a/sample/refunds.csv b/sample/refunds.csv
new file mode 100644
index 0000000..85b7d1e
--- /dev/null
+++ b/sample/refunds.csv
@@ -0,0 +1 @@
+lnr1qqsqzqgpqyqszqgpqyqszqgpqyqszqgpqyqszqgpqyqszqgpqyqszqg2qpfqyqlgtqssxkl9a9rcyzt8f2twvrclqdlkzaj5plgqr7sav355wux9dfmsn3pv