Fix #8357: Disable button to create wallet when wallet is already being created

Sources/BraveWallet/Crypto/Onboarding/CreateWalletView.swift

@@ -78,7 +78,7 @@ private struct CreateWalletView: View {
       }
     } else {
       keyringStore.createWallet(password: password) { mnemonic in
-        if !mnemonic.isEmpty {
+        if let mnemonic, !mnemonic.isEmpty {
           isNewWalletCreated = true
         }
       }
@@ -144,6 +144,11 @@ private struct CreateWalletView: View {
     )
     .hidden(isHidden: error == nil)
   }
+
+  private var isContinueDisabled: Bool {
+    validationError != nil || password.isEmpty || repeatedPassword.isEmpty ||
+    keyringStore.isCreatingWallet || keyringStore.isRestoringWallet
+  }
 
   var body: some View {
     VStack(spacing: 16) {
@@ -200,7 +205,7 @@ private struct CreateWalletView: View {
           .frame(maxWidth: .infinity)
       }
       .buttonStyle(BraveFilledButtonStyle(size: .large))
-      .disabled(validationError != nil || password.isEmpty || repeatedPassword.isEmpty)
+      .disabled(isContinueDisabled)
       .padding(.top, 60)
     }
     .padding(.horizontal, 20)

Sources/BraveWallet/Crypto/Onboarding/RestoreWalletView.swift

@@ -46,7 +46,7 @@ private struct RestoreWalletView: View {
   }
 
   private var isContinueDisabled: Bool {
-    !recoveryWords.allSatisfy({ !$0.isEmpty })
+    !recoveryWords.allSatisfy({ !$0.isEmpty }) || keyringStore.isRestoringWallet
   }
 
   private var errorLabel: some View {

Sources/BraveWallet/Crypto/Stores/KeyringStore.swift

@@ -164,11 +164,14 @@ public class KeyringStore: ObservableObject, WalletObserverStore {
   public var origin: URLOrigin?
 
   /// If this KeyringStore instance is creating a wallet.
-  /// This flag is used to know when to dismiss onboarding when multiple windows are visible.
-  private var isCreatingWallet = false
+  /// Note: Flag is reset prior to onboarding completion step.
+  @Published var isCreatingWallet = false
   /// If this KeyringStore instance is restoring a wallet.
+  /// Note: Flag is reset prior to onboarding completion step.
+  @Published var isRestoringWallet = false
+  /// If this KeyringStore instance is creating a wallet or restoring a wallet.
   /// This flag is used to know when to dismiss onboarding when multiple windows are visible.
-  private var isRestoringWallet = false
+  private var isOnboarding: Bool = false
 
   private let keyringService: BraveWalletKeyringService
   private let walletService: BraveWalletBraveWalletService
@@ -224,7 +227,7 @@ public class KeyringStore: ObservableObject, WalletObserverStore {
       }, 
       _keyringCreated: { [weak self] keyringId in
         guard let self else { return }
-        if self.isOnboardingVisible, !self.isCreatingWallet, keyringId == BraveWallet.KeyringId.default {
+        if self.isOnboardingVisible, !self.isOnboarding, keyringId == BraveWallet.KeyringId.default {
           // Another window has created a wallet. We should dismiss onboarding on this
           // window and allow the other window to continue with it's onboarding flow.
           self.isOnboardingVisible = false
@@ -242,7 +245,7 @@ public class KeyringStore: ObservableObject, WalletObserverStore {
       },
       _walletRestored: { [weak self] in
         guard let self else { return }
-        if self.isOnboardingVisible && !self.isRestoringWallet {
+        if self.isOnboardingVisible && !self.isOnboarding {
           // Another window has restored a wallet. We should dismiss onboarding on this
           // window and allow the other window to continue with it's onboarding flow.
           self.isOnboardingVisible = false
@@ -328,8 +331,7 @@ public class KeyringStore: ObservableObject, WalletObserverStore {
   }
 
   func markOnboardingCompleted() {
-    self.isCreatingWallet = false
-    self.isRestoringWallet = false
+    self.isOnboarding = false
     self.isOnboardingVisible = false
   }
 
@@ -387,9 +389,15 @@ public class KeyringStore: ObservableObject, WalletObserverStore {
     }
   }
 
-  func createWallet(password: String, completion: ((String) -> Void)? = nil) {
+  func createWallet(password: String, completion: ((String?) -> Void)? = nil) {
+    guard !isCreatingWallet else {
+      completion?(nil)
+      return
+    }
+    isOnboarding = true
     isCreatingWallet = true
     keyringService.createWallet(password) { [weak self] mnemonic in
+      self?.isCreatingWallet = false
       self?.updateKeyringInfo()
       if !mnemonic.isEmpty {
         self?.passwordToSaveInBiometric = password
@@ -413,13 +421,19 @@ public class KeyringStore: ObservableObject, WalletObserverStore {
   }
 
   func restoreWallet(phrase: String, password: String, isLegacyBraveWallet: Bool, completion: ((Bool) -> Void)? = nil) {
+    guard !isRestoringWallet else { // wallet is already being restored.
+      completion?(false)
+      return
+    }
+    isOnboarding = true
     isRestoringWallet = true
     keyringService.restoreWallet(
       phrase,
       password: password,
       isLegacyBraveWallet: isLegacyBraveWallet
     ) { [weak self] isMnemonicValid in
       guard let self = self else { return }
+      self.isRestoringWallet = false
       if isMnemonicValid {
         // Restoring from wallet means you already have your phrase backed up
         self.passwordToSaveInBiometric = password