refactor: the way providers are initialized. AnyView is used to render provider buttons.

FirebaseSwiftUI/FirebaseAuthSwiftUI/Sources/Services/AuthService.swift

@@ -2,8 +2,8 @@
 import SwiftUI
 
 public protocol ExternalAuthProvider {
-  associatedtype ButtonType: View
-  @MainActor var authButton: ButtonType { get }
+  var id: String { get }
+  @MainActor func authButton() -> AnyView
 }
 
 public protocol GoogleProviderAuthUIProtocol: ExternalAuthProvider {
@@ -65,15 +65,9 @@ private final class AuthListenerManager {
 @MainActor
 @Observable
 public final class AuthService {
-  public init(configuration: AuthConfiguration = AuthConfiguration(), auth: Auth = Auth.auth(),
-              googleProvider: (any GoogleProviderAuthUIProtocol)? = nil,
-              facebookProvider: (any FacebookProviderAuthUIProtocol)? = nil,
-              phoneAuthProvider: (any PhoneAuthProviderAuthUIProtocol)? = nil) {
+  public init(configuration: AuthConfiguration = AuthConfiguration(), auth: Auth = Auth.auth()) {
     self.auth = auth
     self.configuration = configuration
-    self.googleProvider = googleProvider
-    self.facebookProvider = facebookProvider
-    self.phoneAuthProvider = phoneAuthProvider
     string = StringUtils(bundle: configuration.customStringsBundle ?? Bundle.module)
     listenerManager = AuthListenerManager(auth: auth, authEnvironment: self)
   }
@@ -96,6 +90,21 @@ public final class AuthService {
   private var listenerManager: AuthListenerManager?
   private var signedInCredential: AuthCredential?
 
+  private var providers: [ExternalAuthProvider] = []
+  public func register(provider: ExternalAuthProvider) {
+    providers.append(provider)
+  }
+
+  public func renderButtons(spacing: CGFloat = 16) -> AnyView {
+    AnyView(
+      VStack(spacing: spacing) {
+        ForEach(providers, id: \.id) { provider in
+          provider.authButton()
+        }
+      }
+    )
+  }
+
   private var safeGoogleProvider: any GoogleProviderAuthUIProtocol {
     get throws {
       guard let provider = googleProvider else {

FirebaseSwiftUI/FirebaseAuthSwiftUI/Sources/Strings/Localizable.xcstrings

@@ -1047,6 +1047,9 @@
           }
         }
       }
+    },
+    "Update password" : {
+
     },
     "UpdateEmailAlertMessage" : {
       "comment" : "Alert action message shown before updating email action. Use short/abbreviated translation for 'email' which is less than 15 chars.",

FirebaseSwiftUI/FirebaseAuthSwiftUI/Sources/Views/AuthPickerView.swift

@@ -28,7 +28,7 @@ extension AuthPickerView: View {
         Text(authService.authenticationFlow == .login ? "Login" : "Sign up")
         VStack { Divider() }
         EmailAuthView()
-        providerButtons()
+        authService.renderButtons()
         VStack { Divider() }
         HStack {
           Text(authService

FirebaseSwiftUI/FirebaseFacebookSwiftUI/Sources/Services/AuthService+Facebook.swift

@@ -0,0 +1,17 @@
+//
+//  AuthService+Facebook.swift
+//  FirebaseUI
+//
+//  Created by Russell Wheatley on 01/05/2025.
+//
+
+import FirebaseAuthSwiftUI
+
+public extension AuthService {
+  @discardableResult
+  func withFacebookSignIn(scopes scopes: [String]? = nil) -> AuthService {
+    facebookProvider = FacebookProviderAuthUI(scopes: scopes)
+    register(provider: facebookProvider!)
+    return self
+  }
+}

FirebaseSwiftUI/FirebaseFacebookSwiftUI/Sources/Services/FacebookProviderAuthUI.swift

@@ -22,6 +22,7 @@ public enum FacebookProviderError: Error {
 }
 
 public class FacebookProviderAuthUI: FacebookProviderAuthUIProtocol {
+  public let id: String = "facebook"
   let scopes: [String]
   let shortName = "Facebook"
   let providerId = "facebook.com"
@@ -35,8 +36,8 @@ public class FacebookProviderAuthUI: FacebookProviderAuthUIProtocol {
     shaNonce = CommonUtils.sha256Hash(of: rawNonce)
   }
 
-  @MainActor public var authButton: SignInWithFacebookButton {
-    return SignInWithFacebookButton()
+  @MainActor public func authButton() -> AnyView {
+    AnyView(SignInWithFacebookButton())
   }
 
   @MainActor public func signInWithFacebook(isLimitedLogin: Bool) async throws -> AuthCredential {

FirebaseSwiftUI/FirebaseGoogleSwiftUI/Sources/Services/AuthService+Google.swift

@@ -9,9 +9,10 @@ import FirebaseAuthSwiftUI
 
 public extension AuthService {
   @discardableResult
-  func withGoogleSignIn() -> AuthService {
+  func withGoogleSignIn(scopes scopes: [String]? = nil) -> AuthService {
     let clientID = auth.app?.options.clientID ?? ""
-    googleProvider = GoogleProviderAuthUI(clientID: clientID)
+    googleProvider = GoogleProviderAuthUI(scopes: scopes, clientID: clientID)
+    register(provider: googleProvider!)
     return self
   }
 }

FirebaseSwiftUI/FirebaseGoogleSwiftUI/Sources/Services/GoogleProviderAuthUI.swift

@@ -16,6 +16,7 @@ public enum GoogleProviderError: Error {
 }
 
 public class GoogleProviderAuthUI: @preconcurrency GoogleProviderAuthUIProtocol {
+  public let id: String = "google"
   let scopes: [String]
   let shortName = "Google"
   let providerId = "google.com"
@@ -25,12 +26,12 @@ public class GoogleProviderAuthUI: @preconcurrency GoogleProviderAuthUIProtocol
     self.clientID = clientID
   }
 
-  @MainActor public var authButton: GoogleSignInButton {
-    return GoogleSignInButton {
+  @MainActor public func authButton() -> AnyView {
+    AnyView(GoogleSignInButton {
       Task {
         try await self.signInWithGoogle(clientID: self.clientID)
       }
-    }
+    })
   }
 
   @MainActor public func signInWithGoogle(clientID: String) async throws -> AuthCredential {

FirebaseSwiftUI/FirebasePhoneAuthSwiftUI/Sources/Services/AuthService+Phone.swift

@@ -0,0 +1,17 @@
+//
+//  AuthService+Phone.swift
+//  FirebaseUI
+//
+//  Created by Russell Wheatley on 09/05/2025.
+//
+
+import FirebaseAuthSwiftUI
+
+public extension AuthService {
+  @discardableResult
+  func withPhoneSignIn() -> AuthService {
+    phoneAuthProvider = PhoneAuthProviderAuthUI()
+    register(provider: phoneAuthProvider!)
+    return self
+  }
+}

FirebaseSwiftUI/FirebasePhoneAuthSwiftUI/Sources/Services/PhoneAuthProviderAuthUI.swift

@@ -5,12 +5,11 @@ import SwiftUI
 public typealias VerificationID = String
 
 public class PhoneAuthProviderAuthUI: @preconcurrency PhoneAuthProviderAuthUIProtocol {
-  public var authButton: Button<Text> {
-    // TODO: implement me
-    return Button("Phone", action: {})
-  }
+  public let id: String = "phone"
 
-  public init() {}
+  @MainActor public func authButton() -> AnyView {
+    AnyView(PhoneAuthButtonView())
+  }
 
   @MainActor public func verifyPhoneNumber(phoneNumber: String) async throws -> VerificationID {
     return try await withCheckedThrowingContinuation { continuation in

samples/swiftui/FirebaseSwiftUIExample/FirebaseSwiftUIExample/ContentView.swift

@@ -28,20 +28,16 @@ struct ContentView: View {
       shouldAutoUpgradeAnonymousUsers: true,
       emailLinkSignInActionCodeSettings: actionCodeSettings
     )
-    let facebookProvider = FacebookProviderAuthUI()
-    let phoneAuthProvider = PhoneAuthProviderAuthUI()
     authService = AuthService(
-      configuration: configuration,
-      facebookProvider: facebookProvider,
-      phoneAuthProvider: phoneAuthProvider
+      configuration: configuration
     )
     .withGoogleSignIn()
+    .withFacebookSignIn()
+    .withPhoneSignIn()
   }
 
   var body: some View {
     AuthPickerView {
-      SignInWithGoogleButton()
-      SignInWithFacebookButton()
       PhoneAuthButtonView()
     }.environment(authService)
   }

samples/swiftui/FirebaseSwiftUIExample/FirebaseSwiftUIExample/FirebaseSwiftUIExampleApp.swift

@@ -7,10 +7,7 @@
 import FacebookCore
 import FirebaseAuth
 import FirebaseCore
-import FirebaseGoogleSwiftUI
-import FirebasePhoneAuthSwiftUI
 import GoogleSignIn
-import SwiftData
 import SwiftUI
 
 class AppDelegate: NSObject, UIApplicationDelegate {
@@ -61,8 +58,6 @@ class AppDelegate: NSObject, UIApplicationDelegate {
 struct FirebaseSwiftUIExampleApp: App {
   @UIApplicationDelegateAdaptor(AppDelegate.self) var appDelegate
 
-  init() {}
-
   var body: some Scene {
     WindowGroup {
       NavigationView {