refactor: use generic account service protocol to delete users, update phone provider to also have delete user API

.github/workflows/swiftui-auth.yml

@@ -25,7 +25,7 @@ jobs:
   # Package Unit Tests (standalone, no emulator needed)
   unit-tests:
     name: Package Unit Tests
-    runs-on: macos-15
+    runs-on: macos-26
     timeout-minutes: 15
     steps:
       - uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938
@@ -34,14 +34,14 @@ jobs:
         run: gem install xcpretty
 
       - name: Select Xcode version
-        run: sudo xcode-select -switch /Applications/Xcode_16.4.app/Contents/Developer
+        run: sudo xcode-select -switch /Applications/Xcode_26.0.1.app/Contents/Developer
 
       - name: Run FirebaseSwiftUI Package Unit Tests
         run: |
           set -o pipefail
           xcodebuild test \
             -scheme FirebaseUI-Package \
-            -destination 'platform=iOS Simulator,name=iPhone 16 Pro' \
+            -destination 'platform=iOS Simulator,name=iPhone 17' \
             -enableCodeCoverage YES \
             -resultBundlePath FirebaseSwiftUIPackageTests.xcresult | tee FirebaseSwiftUIPackageTests.log | xcpretty --test --color --simple
 
@@ -62,7 +62,7 @@ jobs:
   # Integration Tests (requires emulator)
   integration-tests:
     name: Integration Tests
-    runs-on: macos-15
+    runs-on: macos-26
     timeout-minutes: 20
     steps:
       - uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938
@@ -90,15 +90,15 @@ jobs:
         run: gem install xcpretty
 
       - name: Select Xcode version
-        run: sudo xcode-select -switch /Applications/Xcode_16.4.app/Contents/Developer
+        run: sudo xcode-select -switch /Applications/Xcode_26.0.1.app/Contents/Developer
 
       - name: Build for Integration Tests
         run: |
           cd ./samples/swiftui/FirebaseSwiftUIExample
           set -o pipefail
           xcodebuild build-for-testing \
             -scheme FirebaseSwiftUIExampleTests \
-            -destination 'platform=iOS Simulator,name=iPhone 16 Pro' \
+            -destination 'platform=iOS Simulator,name=iPhone 17' \
             -enableCodeCoverage YES | xcpretty --color --simple
 
       - name: Run Integration Tests
@@ -107,7 +107,7 @@ jobs:
           set -o pipefail
           xcodebuild test-without-building \
             -scheme FirebaseSwiftUIExampleTests \
-            -destination 'platform=iOS Simulator,name=iPhone 16 Pro' \
+            -destination 'platform=iOS Simulator,name=iPhone 17' \
             -enableCodeCoverage YES \
             -resultBundlePath FirebaseSwiftUIExampleTests.xcresult | tee FirebaseSwiftUIExampleTests.log | xcpretty --test --color --simple
 
@@ -128,7 +128,7 @@ jobs:
   # UI Tests (requires emulator)
   ui-tests:
     name: UI Tests
-    runs-on: macos-15
+    runs-on: macos-26
     timeout-minutes: 40
     steps:
       - uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938
@@ -156,15 +156,15 @@ jobs:
         run: gem install xcpretty
 
       - name: Select Xcode version
-        run: sudo xcode-select -switch /Applications/Xcode_16.4.app/Contents/Developer
+        run: sudo xcode-select -switch /Applications/Xcode_26.0.1.app/Contents/Developer
 
       - name: Build for UI Tests
         run: |
           cd ./samples/swiftui/FirebaseSwiftUIExample
           set -o pipefail
           xcodebuild build-for-testing \
             -scheme FirebaseSwiftUIExampleUITests \
-            -destination 'platform=iOS Simulator,name=iPhone 16 Pro' \
+            -destination 'platform=iOS Simulator,name=iPhone 17' \
             -enableCodeCoverage YES | xcpretty --color --simple
 
       - name: Run UI Tests
@@ -173,7 +173,7 @@ jobs:
           set -o pipefail
           xcodebuild test-without-building \
             -scheme FirebaseSwiftUIExampleUITests \
-            -destination 'platform=iOS Simulator,name=iPhone 16 Pro' \
+            -destination 'platform=iOS Simulator,name=iPhone 17' \
             -parallel-testing-enabled YES \
             -maximum-concurrent-test-simulator-destinations 2 \
             -enableCodeCoverage YES \

FirebaseSwiftUI/FirebaseAppleSwiftUI/Sources/Services/AppleProviderAuthUI.swift

@@ -114,7 +114,7 @@ extension AuthenticateWithAppleDialog: ASAuthorizationControllerDelegate {
 
 // MARK: - Apple Provider Swift
 
-public class AppleProviderSwift: AuthProviderSwift, DeleteUserSwift {
+public class AppleProviderSwift: AuthProviderSwift {
   public let scopes: [ASAuthorization.Scope]
   let providerId = "apple.com"
 
@@ -139,7 +139,7 @@ public class AppleProviderSwift: AuthProviderSwift, DeleteUserSwift {
   }
 
   public func deleteUser(user: User) async throws {
-    let operation = AppleDeleteUserOperation(appleProvider: self)
+    let operation = ProviderDeleteUserOperation(provider: self)
     try await operation(on: user)
   }
 }

FirebaseSwiftUI/FirebaseAuthSwiftUI/Sources/Services/AccountService+Email.swift

@@ -15,13 +15,13 @@
 @preconcurrency import FirebaseAuth
 import Observation
 
+@MainActor
 protocol EmailPasswordOperationReauthentication {
   var passwordPrompt: PasswordPromptCoordinator { get }
 }
 
 extension EmailPasswordOperationReauthentication {
-  // TODO: - @MainActor because User is non-sendable. Might change this once User is sendable in firebase-ios-sdk
-  @MainActor func reauthenticate() async throws {
+  func reauthenticate() async throws {
     guard let user = Auth.auth().currentUser else {
       throw AuthServiceError.reauthenticationRequired("No user currently signed-in")
     }
@@ -34,7 +34,7 @@ extension EmailPasswordOperationReauthentication {
       let password = try await passwordPrompt.confirmPassword()
 
       let credential = EmailAuthProvider.credential(withEmail: email, password: password)
-      try await Auth.auth().currentUser?.reauthenticate(with: credential)
+      _ = try await Auth.auth().currentUser?.reauthenticate(with: credential)
     } catch {
       throw AuthServiceError.signInFailed(underlying: error)
     }

FirebaseSwiftUI/FirebaseAuthSwiftUI/Sources/Services/AccountService.swift

@@ -33,7 +33,7 @@ public protocol AuthenticatedOperation {
 
 public extension AuthenticatedOperation {
   func callAsFunction(on _: User,
-                      _ performOperation: () async throws -> Void) async throws {
+                      _ performOperation: @MainActor () async throws -> Void) async throws {
     do {
       try await performOperation()
     } catch let error as NSError where error.requiresReauthentication {
@@ -45,3 +45,41 @@ public extension AuthenticatedOperation {
     }
   }
 }
+
+@MainActor
+public protocol ProviderOperationReauthentication {
+  var authProvider: AuthProviderSwift { get }
+}
+
+public extension ProviderOperationReauthentication {
+  func reauthenticate() async throws {
+    guard let user = Auth.auth().currentUser else {
+      throw AuthServiceError.reauthenticationRequired("No user currently signed-in")
+    }
+
+    do {
+      let credential = try await authProvider.createAuthCredential()
+      _ = try await user.reauthenticate(with: credential)
+    } catch {
+      throw AuthServiceError.signInFailed(underlying: error)
+    }
+  }
+}
+
+@MainActor
+public class ProviderDeleteUserOperation<Provider: AuthProviderSwift>: AuthenticatedOperation,
+  @preconcurrency ProviderOperationReauthentication {
+  let provider: Provider
+
+  public var authProvider: AuthProviderSwift { provider }
+
+  public init(provider: Provider) {
+    self.provider = provider
+  }
+
+  public func callAsFunction(on user: User) async throws {
+    try await callAsFunction(on: user) {
+      try await user.delete()
+    }
+  }
+}

FirebaseSwiftUI/FirebaseAuthSwiftUI/Sources/Services/AuthService.swift

@@ -17,6 +17,7 @@ import SwiftUI
 
 public protocol AuthProviderSwift {
   @MainActor func createAuthCredential() async throws -> AuthCredential
+  @MainActor func deleteUser(user: User) async throws
 }
 
 public protocol AuthProviderUI {
@@ -25,10 +26,6 @@ public protocol AuthProviderUI {
   var provider: AuthProviderSwift { get }
 }
 
-public protocol DeleteUserSwift {
-  @MainActor func deleteUser(user: User) async throws
-}
-
 public protocol PhoneAuthProviderSwift: AuthProviderSwift {
   @MainActor func verifyPhoneNumber(phoneNumber: String) async throws -> String
 }
@@ -282,13 +279,12 @@ public extension AuthService {
           let operation = EmailPasswordDeleteUserOperation(passwordPrompt: passwordPrompt)
           try await operation(on: user)
         } else {
-          // Find provider by matching ID and ensure it can delete users
-          guard let matchingProvider = providers.first(where: { $0.id == providerId }),
-                let provider = matchingProvider.provider as? DeleteUserSwift else {
+          // Find provider by matching ID
+          guard let matchingProvider = providers.first(where: { $0.id == providerId }) else {
             throw AuthServiceError.providerNotFound("No provider found for \(providerId)")
           }
 
-          try await provider.deleteUser(user: user)
+          try await matchingProvider.provider.deleteUser(user: user)
         }
       }
     } catch {
@@ -723,10 +719,10 @@ public extension AuthService {
       }
       let password = try await passwordPrompt.confirmPassword()
       let credential = EmailAuthProvider.credential(withEmail: email, password: password)
-      try await user.reauthenticate(with: credential)
+      _ = try await user.reauthenticate(with: credential)
     } else if let matchingProvider = providers.first(where: { $0.id == providerId }) {
       let credential = try await matchingProvider.provider.createAuthCredential()
-      try await user.reauthenticate(with: credential)
+      _ = try await user.reauthenticate(with: credential)
     } else {
       throw AuthServiceError.providerNotFound("No provider found for \(providerId)")
     }

FirebaseSwiftUI/FirebaseFacebookSwiftUI/Sources/Services/FacebookProviderAuthUI.swift

@@ -19,7 +19,7 @@ import FirebaseAuth
 import FirebaseAuthSwiftUI
 import SwiftUI
 
-public class FacebookProviderSwift: AuthProviderSwift, DeleteUserSwift {
+public class FacebookProviderSwift: AuthProviderSwift {
   let scopes: [String]
   let providerId = "facebook.com"
   private let loginManager = LoginManager()
@@ -118,7 +118,7 @@ public class FacebookProviderSwift: AuthProviderSwift, DeleteUserSwift {
   }
 
   public func deleteUser(user: User) async throws {
-    let operation = FacebookDeleteUserOperation(facebookProvider: self)
+    let operation = ProviderDeleteUserOperation(provider: self)
     try await operation(on: user)
   }
 }