Expand InputType with new variant: Bolt12 offer

libs/Cargo.toml

@@ -21,7 +21,6 @@ aes = "0.8"
 anyhow = { version = "1.0.79", features = ["backtrace"] }
 base64 = "0.13.0"
 bitcoin = "=0.29.2" # Same version as used in gl-client
-# Pin the reqwest dependency until macOS linker issue is fixed: https://github.com/seanmonstar/reqwest/issues/2006
 hex = "0.4"
 lightning = "=0.0.118" # Same version as used in gl-client
 lightning-invoice = "=0.26.0" # Same version as used in gl-client
@@ -30,6 +29,7 @@ mockito = "1"
 once_cell = "1"
 prost = "^0.11"
 regex = "1.8.1"
+# Pin the reqwest dependency until macOS linker issue is fixed: https://github.com/seanmonstar/reqwest/issues/2006
 reqwest = { version = "=0.11.20", features = ["json"] }
 rusqlite = { version = "0.29", features = [
   "serde_json",

libs/sdk-common/src/input_parser.rs

@@ -1,11 +1,11 @@
+use std::collections::HashMap;
 use std::str::FromStr;
 
 use ::bip21::Uri;
 use anyhow::{anyhow, Result};
 use bitcoin::bech32;
 use bitcoin::bech32::FromBase32;
 use serde::{Deserialize, Serialize};
-use std::collections::HashMap;
 use LnUrlRequestData::*;
 
 use crate::prelude::*;
@@ -418,6 +418,10 @@ pub enum InputType {
     Bolt11 {
         invoice: LNInvoice,
     },
+    #[cfg(feature = "liquid")]
+    Bolt12Offer {
+        offer: LNOffer,
+    },
     NodeId {
         node_id: String,
     },

libs/sdk-common/src/invoice.rs

@@ -2,6 +2,7 @@ use std::num::ParseIntError;
 use std::str::FromStr;
 use std::time::{SystemTimeError, UNIX_EPOCH};
 
+use anyhow::anyhow;
 use bitcoin::secp256k1::{self, PublicKey};
 use hex::ToHex;
 use lightning::routing::gossip::RoutingFees;
@@ -101,6 +102,62 @@ fn format_short_channel_id(id: u64) -> String {
     format!("{block_num}x{tx_num}x{tx_out}")
 }
 
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
+pub enum Amount {
+    Bitcoin {
+        amount_msat: u64,
+    },
+    /// An amount of currency specified using ISO 4712.
+    Currency {
+        /// The currency that the amount is denominated in.
+        iso4217_code: String,
+        /// The amount in the currency unit adjusted by the ISO 4712 exponent (e.g., USD cents).
+        fractional_amount: u64,
+    },
+}
+
+impl TryFrom<lightning::offers::offer::Amount> for Amount {
+    type Error = anyhow::Error;
+
+    fn try_from(amount: lightning::offers::offer::Amount) -> Result<Self, Self::Error> {
+        match amount {
+            lightning::offers::offer::Amount::Bitcoin { amount_msats } => Ok(Amount::Bitcoin {
+                amount_msat: amount_msats,
+            }),
+            lightning::offers::offer::Amount::Currency {
+                iso4217_code,
+                amount,
+            } => Ok(Amount::Currency {
+                iso4217_code: String::from_utf8(iso4217_code.to_vec())
+                    .map_err(|_| anyhow!("Expecting a valid ISO 4217 character sequence"))?,
+                fractional_amount: amount,
+            }),
+        }
+    }
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
+pub struct LNOffer {
+    /// String representation of the Bolt12 offer
+    pub offer: String,
+    pub chains: Vec<String>,
+    /// If set, it represents the minimum amount that an invoice must have to be valid for this offer
+    pub min_amount: Option<Amount>,
+    pub description: Option<String>,
+    /// Epoch time from which an invoice should no longer be requested. If None, the offer does not expire.
+    pub absolute_expiry: Option<u64>,
+    pub issuer: Option<String>,
+    /// The public key used by the recipient to sign invoices.
+    pub signing_pubkey: Option<String>,
+    pub paths: Vec<LNOfferBlindedPath>,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
+pub struct LNOfferBlindedPath {
+    /// For each blinded hop, we store the node ID (pubkey as hex).
+    pub blinded_hops: Vec<String>,
+}
+
 /// Wrapper for a BOLT11 LN invoice
 #[derive(Clone, Debug, Serialize, Deserialize, PartialEq)]
 pub struct LNInvoice {