added network indicator

Author: rubensmachion

BDKSwiftExampleWallet/Service/BDKSyncService/KyotoService.swift

@@ -13,7 +13,9 @@ extension KyotoService {
 }
 
 extension Notification.Name {
-    static let shouldUpdateWallet = Notification.Name("ShouldUpdateWallet")
+    static let walletDidUpdate = Notification.Name("walletDidUpdate")
+    static let walletDidConnect = Notification.Name("walletDidConnect")
+    static let walletDidDisconnect = Notification.Name("walletDidDisconnect")
 }
 
 final class KyotoService: BDKSyncService {
@@ -27,7 +29,13 @@ final class KyotoService: BDKSyncService {
 
     private var client: CbfClient?
     private var node: CbfNode?
-    private var isConnected = false
+    private var isConnected = false {
+        didSet {
+            isConnected ?
+            NotificationCenter.default.post(name: .walletDidConnect, object: nil) :
+            NotificationCenter.default.post(name: .walletDidDisconnect, object: nil)
+        }
+    }
     private var isScanRunning = false
 
     private var fullScanProgress: FullScanProgress?
@@ -152,7 +160,7 @@ final class KyotoService: BDKSyncService {
                 if let update = await client?.update() {
                     do {
                         try wallet?.applyUpdate(update: update)
-                        NotificationCenter.default.post(name: .shouldUpdateWallet, object: nil)
+                        NotificationCenter.default.post(name: .walletDidUpdate, object: nil)
                         print("Updated wallet")
                     } catch {
                         print(error)

BDKSwiftExampleWallet/View Model/WalletViewModel.swift

@@ -45,6 +45,7 @@ class WalletViewModel {
     var syncMode: SyncMode {
         bdkClient.getSyncMode() ?? .esplora
     }
+    var isConnected: Bool = false
 
     init(
         bdkClient: BDKClient = .live,
@@ -58,13 +59,31 @@ class WalletViewModel {
         self.priceClient = priceClient
         self.transactions = transactions
         self.walletSyncState = walletSyncState
-        NotificationCenter.default.addObserver(self, selector: #selector(receiveNotification(_:)), name: .shouldUpdateWallet, object: nil)
+        addNotifications()
+    }
+    
+    deinit {
+        NotificationCenter.default.removeObserver(self)
+    }
+    
+    private func addNotifications() {
+        NotificationCenter.default.addObserver(self, selector: #selector(receiveNotification(_:)), name: .walletDidUpdate, object: nil)
+        NotificationCenter.default.addObserver(self, selector: #selector(receiveNotification(_:)), name: .walletDidConnect, object: nil)
+        NotificationCenter.default.addObserver(self, selector: #selector(receiveNotification(_:)), name: .walletDidConnect, object: nil)
     }
 
     @objc private func receiveNotification(_ notification: Notification) {
-        if notification.name == .shouldUpdateWallet {
+        switch notification.name {
+        case .walletDidUpdate:
             getBalance()
             getTransactions()
+        case .walletDidConnect:
+            isConnected = true
+            
+        case .walletDidDisconnect:
+            isConnected = false
+            
+        default: break
         }
     }
 

BDKSwiftExampleWallet/View/WalletView.swift

@@ -182,6 +182,12 @@ struct WalletView: View {
             )
         }
         .toolbar {
+            if viewModel.syncMode == .kyoto {
+                ToolbarItem(placement: .topBarLeading) {
+                    Image(systemName: viewModel.isConnected ? "network" : "network.slash")
+                        .foregroundStyle(viewModel.isConnected ? .blue : .red)
+                }
+            }
             ToolbarItem(placement: .navigationBarTrailing) {
                 Button {
                     showSettingsView = true