feat: isMultipath and fingerprint

Author: reez

BDKSwiftExampleWallet.xcodeproj/project.pbxproj

@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 56;
+	objectVersion = 60;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -69,6 +69,7 @@
 		AE91CEED2C0FDB70000AAD20 /* SentAndReceivedValues+Extensions.swift in Sources */ = {isa = PBXBuildFile; fileRef = AE91CEEC2C0FDB70000AAD20 /* SentAndReceivedValues+Extensions.swift */; };
 		AE91CEEF2C0FDBC7000AAD20 /* CanonicalTx+Extensions.swift in Sources */ = {isa = PBXBuildFile; fileRef = AE91CEEE2C0FDBC7000AAD20 /* CanonicalTx+Extensions.swift */; };
 		AE96F6622A424C400055623C /* BDKSwiftExampleWalletReceiveViewModelTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = AE96F6612A424C400055623C /* BDKSwiftExampleWalletReceiveViewModelTests.swift */; };
+		AEA1F6432CE43702004EC538 /* BitcoinDevKit in Frameworks */ = {isa = PBXBuildFile; productRef = AEA1F6422CE43702004EC538 /* BitcoinDevKit */; };
 		AEAB03112ABDDB86000C9528 /* FeeViewModel.swift in Sources */ = {isa = PBXBuildFile; fileRef = AEAB03102ABDDB86000C9528 /* FeeViewModel.swift */; };
 		AEAB03132ABDDBF4000C9528 /* AmountViewModel.swift in Sources */ = {isa = PBXBuildFile; fileRef = AEAB03122ABDDBF4000C9528 /* AmountViewModel.swift */; };
 		AEAF83B62B7BD4D10019B23B /* CodeScanner in Frameworks */ = {isa = PBXBuildFile; productRef = AEAF83B52B7BD4D10019B23B /* CodeScanner */; };
@@ -999,6 +1000,13 @@
 		};
 /* End XCConfigurationList section */
 
+/* Begin XCLocalSwiftPackageReference section */
+		AEA1F6412CE43702004EC538 /* XCLocalSwiftPackageReference "../bdk-ffi/bdk-swift" */ = {
+			isa = XCLocalSwiftPackageReference;
+			relativePath = "../bdk-ffi/bdk-swift";
+		};
+/* End XCLocalSwiftPackageReference section */
+
 /* Begin XCRemoteSwiftPackageReference section */
 		AE52D68D2D1367C80042119D /* XCRemoteSwiftPackageReference "bdk-swift" */ = {
 			isa = XCRemoteSwiftPackageReference;
@@ -1061,6 +1069,10 @@
 			package = AE7D5A0C2A7EE62200EAC8CE /* XCRemoteSwiftPackageReference "KeychainAccess" */;
 			productName = KeychainAccess;
 		};
+		AEA1F6422CE43702004EC538 /* BitcoinDevKit */ = {
+			isa = XCSwiftPackageProductDependency;
+			productName = BitcoinDevKit;
+		};
 		AEAF83B52B7BD4D10019B23B /* CodeScanner */ = {
 			isa = XCSwiftPackageProductDependency;
 			package = AEAF83B42B7BD4D10019B23B /* XCRemoteSwiftPackageReference "CodeScanner" */;

BDKSwiftExampleWallet/Service/BDK Service/BDKService.swift

@@ -164,11 +164,35 @@ private class BDKService {
             throw WalletError.walletNotFound
         }
 
-        let cleanDescriptor =
-            descriptorString.split(separator: "#").first.map(String.init) ?? descriptorString
-        let descriptor = try Descriptor(descriptor: cleanDescriptor, network: network)
-        let changeDescriptorString = cleanDescriptor.replacingOccurrences(of: "/0/*", with: "/1/*")
-        let changeDescriptor = try Descriptor(descriptor: changeDescriptorString, network: network)
+        let descriptor: Descriptor
+        let changeDescriptor: Descriptor
+
+        let cleanDescriptorString = descriptorString.components(separatedBy: "\n")
+            .map { $0.split(separator: "#").first?.trimmingCharacters(in: .whitespaces) ?? "" }
+            .filter { !$0.isEmpty }
+            .joined(separator: "\n")
+
+        if let firstDescriptor = try? Descriptor(
+            descriptor: cleanDescriptorString.components(separatedBy: "\n")[0],
+            network: network
+        ),
+            firstDescriptor.isMultipath()
+        {
+            let baseDescriptor = cleanDescriptorString.components(separatedBy: "\n")[0]
+            descriptor = try Descriptor(
+                descriptor: baseDescriptor.replacingOccurrences(of: "<0;1>", with: "0"),
+                network: network
+            )
+            changeDescriptor = try Descriptor(
+                descriptor: baseDescriptor.replacingOccurrences(of: "<0;1>", with: "1"),
+                network: network
+            )
+        } else {
+            let descriptors = cleanDescriptorString.components(separatedBy: "\n")
+            guard descriptors.count == 2 else { throw WalletError.walletNotFound }
+            descriptor = try Descriptor(descriptor: descriptors[0], network: network)
+            changeDescriptor = try Descriptor(descriptor: descriptors[1], network: network)
+        }
 
         let backupInfo = BackupInfo(
             mnemonic: "",
@@ -211,10 +235,20 @@ private class BDKService {
             throw WalletError.walletNotFound
         }
 
-        let descriptorString = "tr(\(xpubString)/0/*)"
-        let changeDescriptorString = "tr(\(xpubString)/1/*)"
-        let descriptor = try Descriptor(descriptor: descriptorString, network: network)
-        let changeDescriptor = try Descriptor(descriptor: changeDescriptorString, network: network)
+        let descriptorPublicKey = try DescriptorPublicKey.fromString(publicKey: xpubString)
+        let fingerprint = descriptorPublicKey.masterFingerprint()
+        let descriptor = Descriptor.newBip86Public(
+            publicKey: descriptorPublicKey,
+            fingerprint: fingerprint,
+            keychain: .external,
+            network: network
+        )
+        let changeDescriptor = Descriptor.newBip86Public(
+            publicKey: descriptorPublicKey,
+            fingerprint: fingerprint,
+            keychain: .internal,
+            network: network
+        )
 
         let backupInfo = BackupInfo(
             mnemonic: "",