Implement Lightning wallet sync, reorg handling, and UniFFI bindings for CBF

Author: febyeji

src/builder.rs

@@ -828,6 +828,19 @@ impl ArcedNodeBuilder {
 		self.inner.write().unwrap().set_chain_source_electrum(server_url, sync_config);
 	}
 
+	/// Configures the [`Node`] instance to source its chain data via BIP 157 compact block
+	/// filters.
+	///
+	/// `peers` is an optional list of peer addresses to connect to for sourcing compact block
+	/// filters. If empty, the node will discover peers via DNS seeds.
+	///
+	/// If no `sync_config` is given, default values are used. See [`CbfSyncConfig`] for more
+	/// information.
+	#[cfg(feature = "cbf")]
+	pub fn set_chain_source_cbf(&self, peers: Vec<String>, sync_config: Option<CbfSyncConfig>) {
+		self.inner.write().unwrap().set_chain_source_cbf(peers, sync_config);
+	}
+
 	/// Configures the [`Node`] instance to connect to a Bitcoin Core node via RPC.
 	///
 	/// This method establishes an RPC connection that enables all essential chain operations including
@@ -2010,6 +2023,9 @@ pub(crate) fn sanitize_alias(alias_str: &str) -> Result<NodeAlias, BuildError> {
 
 #[cfg(test)]
 mod tests {
+	#[cfg(all(feature = "cbf", feature = "uniffi"))]
+	use crate::config::CbfSyncConfig;
+
 	use super::{sanitize_alias, BuildError, NodeAlias};
 
 	#[test]
@@ -2047,4 +2063,23 @@ mod tests {
 		let node = sanitize_alias(alias);
 		assert_eq!(node.err().unwrap(), BuildError::InvalidNodeAlias);
 	}
+
+	#[cfg(all(feature = "cbf", feature = "uniffi"))]
+	#[test]
+	fn arced_builder_can_set_cbf_chain_source() {
+		let builder = super::ArcedNodeBuilder::new();
+		let sync_config = CbfSyncConfig::default();
+
+		let peers = vec!["127.0.0.1:8333".to_string()];
+		builder.set_chain_source_cbf(peers.clone(), Some(sync_config.clone()));
+
+		let guard = builder.inner.read().unwrap();
+		assert!(matches!(
+			guard.chain_data_source_config.as_ref(),
+			Some(super::ChainDataSourceConfig::Cbf {
+				peers: p,
+				sync_config: Some(config),
+			}) if config == &sync_config && p == &peers
+		));
+	}
 }