From 5d58dd6f6bc7d97365e203bf74ca1cc4bafb7986 Mon Sep 17 00:00:00 2001
From: Matthew Ramsden <6657488+reez@users.noreply.github.com>
Date: Fri, 18 Oct 2024 13:50:15 -0500
Subject: [PATCH] ui: export descriptor

---
 .../Resources/Localizable.xcstrings           |  7 +++
 .../Activity/TransactionDetailViewModel.swift |  2 +-
 .../View Model/Settings/SeedViewModel.swift   | 32 ++++++++++---
 .../View/Settings/SeedView.swift              | 47 +++++++++++++++++--
 4 files changed, 76 insertions(+), 12 deletions(-)

diff --git a/BDKSwiftExampleWallet/Resources/Localizable.xcstrings b/BDKSwiftExampleWallet/Resources/Localizable.xcstrings
index 5678d1a..ee4207f 100644
--- a/BDKSwiftExampleWallet/Resources/Localizable.xcstrings
+++ b/BDKSwiftExampleWallet/Resources/Localizable.xcstrings
@@ -289,6 +289,7 @@
       }
     },
     "Copy" : {
+      "extractionState" : "stale",
       "localizations" : {
         "fr" : {
           "stringUnit" : {
@@ -327,6 +328,9 @@
           }
         }
       }
+    },
+    "Descriptors" : {
+
     },
     "Destructive Zone" : {
       "localizations" : {
@@ -579,6 +583,9 @@
           }
         }
       }
+    },
+    "Seed" : {
+
     },
     "Seed is not synced across devices." : {
 
diff --git a/BDKSwiftExampleWallet/View Model/Activity/TransactionDetailViewModel.swift b/BDKSwiftExampleWallet/View Model/Activity/TransactionDetailViewModel.swift
index 02852c1..e500e67 100644
--- a/BDKSwiftExampleWallet/View Model/Activity/TransactionDetailViewModel.swift	
+++ b/BDKSwiftExampleWallet/View Model/Activity/TransactionDetailViewModel.swift	
@@ -42,7 +42,7 @@ class TransactionDetailViewModel {
 
     func getEsploraUrl() {
         let savedEsploraURL = bdkClient.getEsploraURL()
-        
+
         switch network {
         case "signet":
             if savedEsploraURL == Constants.Config.EsploraServerURLNetwork.Signet.bdk {
diff --git a/BDKSwiftExampleWallet/View Model/Settings/SeedViewModel.swift b/BDKSwiftExampleWallet/View Model/Settings/SeedViewModel.swift
index b510b8c..baa5523 100644
--- a/BDKSwiftExampleWallet/View Model/Settings/SeedViewModel.swift	
+++ b/BDKSwiftExampleWallet/View Model/Settings/SeedViewModel.swift	
@@ -14,26 +14,46 @@ import SwiftUI
 class SeedViewModel {
     let bdkClient: BDKClient
 
-    var seed: BackupInfo?
+    var backupInfo: BackupInfo?
+    var publicDescriptor: Descriptor?
+    var publicChangeDescriptor: Descriptor?
     var seedViewError: AppError?
     var showingSeedViewErrorAlert: Bool
 
     init(
         bdkClient: BDKClient = .live,
-        seed: BackupInfo? = nil,
+        backupInfo: BackupInfo? = nil,
         seedViewError: AppError? = nil,
         showingSeedViewErrorAlert: Bool = false
     ) {
         self.bdkClient = bdkClient
-        self.seed = seed
+        self.backupInfo = backupInfo
         self.seedViewError = seedViewError
         self.showingSeedViewErrorAlert = showingSeedViewErrorAlert
     }
 
-    func getSeed() {
+    func getNetwork() -> Network {
+        let savedNetwork = bdkClient.getNetwork()
+        return savedNetwork
+    }
+
+    func getBackupInfo(network: Network) {
         do {
-            let seed = try bdkClient.getBackupInfo()
-            self.seed = seed
+            let backupInfo = try bdkClient.getBackupInfo()
+
+            let externalPublicDescriptor = try Descriptor.init(
+                descriptor: backupInfo.descriptor,
+                network: network
+            )
+            self.publicDescriptor = externalPublicDescriptor
+
+            let internalPublicDescriptor = try Descriptor.init(
+                descriptor: backupInfo.changeDescriptor,
+                network: network
+            )
+            self.publicChangeDescriptor = internalPublicDescriptor
+
+            self.backupInfo = backupInfo
         } catch {
             self.seedViewError = .generic(message: error.localizedDescription)
             self.showingSeedViewErrorAlert = true
diff --git a/BDKSwiftExampleWallet/View/Settings/SeedView.swift b/BDKSwiftExampleWallet/View/Settings/SeedView.swift
index 5138376..6c3e6ef 100644
--- a/BDKSwiftExampleWallet/View/Settings/SeedView.swift
+++ b/BDKSwiftExampleWallet/View/Settings/SeedView.swift
@@ -20,10 +20,13 @@ struct SeedView: View {
                 .ignoresSafeArea()
 
             VStack {
-                if let seed = viewModel.seed {
+                if let backupInfo = viewModel.backupInfo,
+                    let publicDescriptor = viewModel.publicDescriptor,
+                    let publicChangeDescriptor = viewModel.publicChangeDescriptor
+                {
 
                     SeedPhraseView(
-                        words: seed.mnemonic.components(separatedBy: " "),
+                        words: backupInfo.mnemonic.components(separatedBy: " "),
                         preferredWordsPerRow: 2,
                         usePaging: true,
                         wordsPerPage: 4
@@ -41,7 +44,7 @@ struct SeedView: View {
                     HStack {
                         Spacer()
                         Button {
-                            UIPasteboard.general.string = seed.mnemonic
+                            UIPasteboard.general.string = backupInfo.mnemonic
                             isCopied = true
                             showCheckmark = true
                             DispatchQueue.main.asyncAfter(deadline: .now() + 0.75) {
@@ -55,7 +58,7 @@ struct SeedView: View {
                                         ? "document.on.document.fill" : "document.on.document"
                                 )
                                 .contentTransition(.symbolEffect(.replace))
-                                Text("Copy")
+                                Text("Seed")
                                     .bold()
                             }
                         }
@@ -70,6 +73,39 @@ struct SeedView: View {
                         )
                         Spacer()
                     }
+
+                    HStack {
+                        Spacer()
+
+                        let formattedDescriptors = """
+                            External Private: \(backupInfo.descriptor)
+
+                            External Public: \(publicDescriptor)
+
+                            Internal Private: \(backupInfo.changeDescriptor)
+
+                            Internal Public: \(publicChangeDescriptor)
+                            """
+
+                        ShareLink(item: formattedDescriptors) {
+                            HStack {
+                                Image(systemName: "square.and.arrow.up")
+                                Text("Descriptors")
+                                    .bold()
+                            }
+                        }
+                        .buttonStyle(
+                            BitcoinFilled(
+                                width: 160,
+                                height: 40,
+                                tintColor: .primary,
+                                textColor: Color(uiColor: .systemBackground),
+                                isCapsule: true
+                            )
+                        )
+
+                        Spacer()
+                    }
                     .padding()
                 } else {
                     Text("No seed available")
@@ -79,7 +115,8 @@ struct SeedView: View {
             }
             .padding()
             .onAppear {
-                viewModel.getSeed()
+                let network = viewModel.getNetwork()
+                viewModel.getBackupInfo(network: network)
             }
         }
         .alert(isPresented: $viewModel.showingSeedViewErrorAlert) {