From 4e81afe18081544fdd484c8663b257786e0df8c5 Mon Sep 17 00:00:00 2001
From: Nick Cooke <36927374+ncooke3@users.noreply.github.com>
Date: Tue, 1 Jul 2025 18:02:42 -0400
Subject: [PATCH 1/2] [Auth] Remove wrapper API that uses deprecated Auth API

---
 .../Sources/Auth/Auth+Combine.swift           | 25 -----
 .../Unit/Auth/FetchSignInMethodsTests.swift   | 93 -------------------
 2 files changed, 118 deletions(-)
 delete mode 100644 FirebaseCombineSwift/Tests/Unit/Auth/FetchSignInMethodsTests.swift

diff --git a/FirebaseCombineSwift/Sources/Auth/Auth+Combine.swift b/FirebaseCombineSwift/Sources/Auth/Auth+Combine.swift
index 96f7c776c64..bfd56be4111 100644
--- a/FirebaseCombineSwift/Sources/Auth/Auth+Combine.swift
+++ b/FirebaseCombineSwift/Sources/Auth/Auth+Combine.swift
@@ -259,31 +259,6 @@ public extension Auth {
     }
   }
 
-  //  MARK: - Email-based Authentication Helpers
-
-  /// Fetches the list of all sign-in methods previously used for the provided email address.
-  ///
-  /// The publisher will emit events on the **main** thread.
-  ///
-  /// - Parameter email: The email address for which to obtain a list of sign-in methods.
-  /// - Returns: A publisher that emits a list of sign-in methods for the specified email
-  ///   address, or an error if one occurred. The publisher will emit on the *main* thread.
-  /// - Remark: Possible error codes:
-  ///   - `AuthErrorCodeInvalidEmail` - Indicates the email address is malformed.
-  ///
-  ///   See `AuthErrors` for a list of error codes that are common to all API methods
-  func fetchSignInMethods(forEmail email: String) -> Future<[String], Error> {
-    Future<[String], Error> { promise in
-      self.fetchSignInMethods(forEmail: email) { signInMethods, error in
-        if let error {
-          promise(.failure(error))
-        } else if let signInMethods {
-          promise(.success(signInMethods))
-        }
-      }
-    }
-  }
-
   // MARK: - Password Reset
 
   /// Resets the password given a code sent to the user outside of the app and a new password for
diff --git a/FirebaseCombineSwift/Tests/Unit/Auth/FetchSignInMethodsTests.swift b/FirebaseCombineSwift/Tests/Unit/Auth/FetchSignInMethodsTests.swift
deleted file mode 100644
index e287cf5445b..00000000000
--- a/FirebaseCombineSwift/Tests/Unit/Auth/FetchSignInMethodsTests.swift
+++ /dev/null
@@ -1,93 +0,0 @@
-// Copyright 2020 Google LLC
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-import Combine
-import FirebaseAuth
-import Foundation
-import XCTest
-
-class FetchSignInMethodsTests: XCTestCase {
-  override class func setUp() {
-    FirebaseApp.configureForTests()
-  }
-
-  override class func tearDown() {
-    FirebaseApp.app()?.delete { success in
-      if success {
-        print("Shut down app successfully.")
-      } else {
-        print("💥 There was a problem when shutting down the app..")
-      }
-    }
-  }
-
-  override func setUp() {
-    do {
-      try Auth.auth().signOut()
-    } catch {}
-  }
-
-  static let apiKey = Credentials.apiKey
-  static let email = "johnnyappleseed@apple.com"
-
-  static let emailLinkAuthSignInMethod = "emailLink"
-  static let facebookAuthSignInMethod = "facebook.com"
-
-  static let allSignInMethods = [
-    FetchSignInMethodsTests.emailLinkAuthSignInMethod,
-    FetchSignInMethodsTests.facebookAuthSignInMethod,
-  ]
-
-  class MockCreateAuthURIResponse: FIRCreateAuthURIResponse {
-    override var signinMethods: [String]? { return FetchSignInMethodsTests.allSignInMethods }
-  }
-
-  class MockAuthBackend: AuthBackendImplementationMock {
-    override func createAuthURI(_ request: FIRCreateAuthURIRequest,
-                                callback: @escaping FIRCreateAuthURIResponseCallback) {
-      XCTAssertEqual(request.identifier, FetchSignInMethodsTests.email)
-      XCTAssertNotNil(request.endpoint)
-      XCTAssertEqual(request.apiKey, FetchSignInMethodsTests.apiKey)
-
-      callback(MockCreateAuthURIResponse(), nil)
-    }
-  }
-
-  func testFetchSignInMethodsForEmail() {
-    // given
-    FIRAuthBackend.setBackendImplementation(MockAuthBackend())
-    var cancellables = Set<AnyCancellable>()
-    let fetchSignInMethodsExpectation = expectation(description: "Fetched Sign-in methods")
-
-    // when
-    Auth.auth()
-      .fetchSignInMethods(forEmail: FetchSignInMethodsTests.email)
-      .sink { completion in
-        switch completion {
-        case .finished:
-          print("Finished")
-        case let .failure(error):
-          XCTFail("💥 Something went wrong: \(error)")
-        }
-      } receiveValue: { signInMethods in
-        XCTAssertEqual(signInMethods, FetchSignInMethodsTests.allSignInMethods)
-
-        fetchSignInMethodsExpectation.fulfill()
-      }
-      .store(in: &cancellables)
-
-    // then
-    wait(for: [fetchSignInMethodsExpectation], timeout: expectationTimeout)
-  }
-}

From e1d0125c8a435a8c454a64d348d5fe47328ded7b Mon Sep 17 00:00:00 2001
From: Nick Cooke <36927374+ncooke3@users.noreply.github.com>
Date: Tue, 1 Jul 2025 18:24:37 -0400
Subject: [PATCH 2/2] add changelog entry

---
 FirebaseCombineSwift/CHANGELOG.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/FirebaseCombineSwift/CHANGELOG.md b/FirebaseCombineSwift/CHANGELOG.md
index eca4cc9be7c..0a00eff70ca 100644
--- a/FirebaseCombineSwift/CHANGELOG.md
+++ b/FirebaseCombineSwift/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 12.0.0
+- [removed] Removed `fetchSignInMethods` Combine wrapper as the underlying API
+  is deprecated.
+
 # 10.8.0
 - [fixed] Use caller's encoder when setting document data (#11033).