Add address index to return type of get_last_unused_address

src/bdk.udl

@@ -49,6 +49,11 @@ enum BdkError {
   "Rusqlite",
 };
 
+dictionary AddressInformation {
+  u32 index;
+  string address;
+};
+
 enum Network {
   "Bitcoin",
   "Testnet",
@@ -127,7 +132,7 @@ interface Wallet {
   [Throws=BdkError]
   constructor(string descriptor, string? change_descriptor, Network network, DatabaseConfig database_config);
   string get_new_address();
-  string get_last_unused_address();
+  AddressInformation get_last_unused_address();
   [Throws=BdkError]
   u64 get_balance();
   [Throws=BdkError]

src/lib.rs

@@ -13,6 +13,7 @@ use bdk::keys::bip39::{Language, Mnemonic, WordCount};
 use bdk::keys::{DerivableKey, ExtendedKey, GeneratableKey, GeneratedKey};
 use bdk::miniscript::BareCtx;
 use bdk::wallet::AddressIndex;
+use bdk::wallet::AddressInfo;
 use bdk::{
     BlockTime, Error, FeeRate, SignOptions, SyncOptions as BdkSyncOptions, Wallet as BdkWallet,
 };
@@ -26,6 +27,11 @@ uniffi_macros::include_scaffolding!("bdk");
 
 type BdkError = Error;
 
+pub struct AddressInformation {
+    pub index: u32,
+    pub address: String,
+}
+
 pub enum DatabaseConfig {
     Memory,
     Sled { config: SledDbConfiguration },
@@ -243,12 +249,22 @@ impl Wallet {
             .to_string()
     }
 
-    fn get_last_unused_address(&self) -> String {
-        self.get_wallet()
+    // fn get_last_unused_address(&self) -> String {
+    //     self.get_wallet()
+    //         .get_address(AddressIndex::LastUnused)
+    //         .unwrap()
+    //         .address
+    //         .to_string()
+    // }
+
+    fn get_last_unused_address(&self) -> AddressInformation {
+        let address_info = self.get_wallet()
             .get_address(AddressIndex::LastUnused)
-            .unwrap()
-            .address
-            .to_string()
+            .unwrap();
+        return AddressInformation {
+            index: address_info.index,
+            address: address_info.address.to_string()
+        }
     }
 
     fn get_balance(&self) -> Result<u64, Error> {