From fdb5f74d5832cb684a0b1a7dbb70c9beef45bf10 Mon Sep 17 00:00:00 2001
From: A <a@a.com>
Date: Wed, 31 Jul 2024 21:09:29 +0200
Subject: [PATCH] Added finalize

---
 bdk-ffi/src/bdk.udl    |  4 ++++
 bdk-ffi/src/bitcoin.rs | 17 +++++++++++++++++
 bdk-ffi/src/error.rs   |  3 +++
 3 files changed, 24 insertions(+)

diff --git a/bdk-ffi/src/bdk.udl b/bdk-ffi/src/bdk.udl
index bacb8756..b88bae8d 100644
--- a/bdk-ffi/src/bdk.udl
+++ b/bdk-ffi/src/bdk.udl
@@ -179,6 +179,7 @@ interface PersistenceError {
 [Error]
 interface PsbtError {
   InvalidMagic();
+  FinalizeError();
   MissingUtxo();
   InvalidSeparator();
   PsbtUtxoOutOfBounds();
@@ -686,6 +687,9 @@ interface Psbt {
   [Throws=PsbtError]
   Psbt combine(Psbt other);
 
+  [Throws=PsbtError]
+  Psbt finalize();
+
   string json_serialize();
 };
 
diff --git a/bdk-ffi/src/bitcoin.rs b/bdk-ffi/src/bitcoin.rs
index 8f56d3de..fafbf307 100644
--- a/bdk-ffi/src/bitcoin.rs
+++ b/bdk-ffi/src/bitcoin.rs
@@ -20,6 +20,8 @@ use bdk_wallet::bitcoin::Transaction as BdkTransaction;
 use bdk_wallet::bitcoin::TxIn as BdkTxIn;
 use bdk_wallet::bitcoin::TxOut as BdkTxOut;
 use bdk_wallet::bitcoin::Txid;
+use bdk_wallet::miniscript::psbt::PsbtExt as MiniscriptPsbtExt;
+use bdk_wallet::bitcoin::secp256k1::Secp256k1;
 
 use std::fmt::Display;
 use std::ops::Deref;
@@ -223,6 +225,21 @@ impl Psbt {
         psbt.to_string()
     }
 
+    pub(crate) fn finalize(&self) -> Result<Arc<Psbt>, PsbtError> {
+        let secp = Secp256k1::new();
+        let result = self.0.lock().unwrap().clone().finalize(&secp);
+        match result {
+            Ok(psbt) => {
+                Ok(Arc::new( Psbt::from(psbt)))
+            },
+            Err((_psbt, _errors)) => {
+                Err(PsbtError::FinalizeError)
+            }
+        }
+    }
+    
+    
+
     pub(crate) fn extract_tx(&self) -> Result<Arc<Transaction>, ExtractTxError> {
         let tx: BdkTransaction = self.0.lock().unwrap().clone().extract_tx()?;
         let transaction: Transaction = tx.into();
diff --git a/bdk-ffi/src/error.rs b/bdk-ffi/src/error.rs
index 30353222..19edfe11 100644
--- a/bdk-ffi/src/error.rs
+++ b/bdk-ffi/src/error.rs
@@ -429,6 +429,9 @@ pub enum PsbtError {
     #[error("invalid magic")]
     InvalidMagic,
 
+    #[error("finalize error with errors")]
+    FinalizeError,
+
     #[error("UTXO information is not present in PSBT")]
     MissingUtxo,