facebook auth add base + add to example project

Author: russellwheatley

FirebaseSwiftUI/FirebaseAuthSwiftUI/Sources/Services/AuthService.swift

@@ -6,6 +6,8 @@ public protocol GoogleProviderProtocol {
   @MainActor func signInWithGoogle(clientID: String) async throws -> AuthCredential
 }
 
+public protocol FacebookProviderProtocol {}
+
 public enum AuthenticationProvider {
   case email
   case google
@@ -61,13 +63,16 @@ public final class AuthService {
   public let auth: Auth
   private var listenerManager: AuthListenerManager?
   private let googleProvider: GoogleProviderProtocol?
+  private let facebookProvider: FacebookProviderProtocol?
   public let string: StringUtils
 
   public init(configuration: AuthConfiguration = AuthConfiguration(), auth: Auth = Auth.auth(),
-              googleProvider: GoogleProviderProtocol? = nil) {
+              googleProvider: GoogleProviderProtocol? = nil,
+              facebookProvider: FacebookProviderProtocol? = nil) {
     self.auth = auth
     self.configuration = configuration
     self.googleProvider = googleProvider
+    self.facebookProvider = facebookProvider
     string = StringUtils(bundle: configuration.customStringsBundle ?? Bundle.module)
     listenerManager = AuthListenerManager(auth: auth, authEnvironment: self)
   }
@@ -91,6 +96,21 @@ public final class AuthService {
     }
   }
 
+  private var safeFacebookProvider: FacebookProviderProtocol {
+    get throws {
+      guard let provider = facebookProvider else {
+        throw NSError(
+          domain: "AuthEnvironmentErrorDomain",
+          code: 1,
+          userInfo: [
+            NSLocalizedDescriptionKey: "`FacebookProviderSwift` has not been configured",
+          ]
+        )
+      }
+      return provider
+    }
+  }
+
   func updateAuthenticationState() {
     authenticationState =
       (currentUser == nil || currentUser?.isAnonymous == true)

FirebaseSwiftUI/FirebaseFacebookSwiftUI/Sources/Services/FacebookProviderSwift.swift

@@ -0,0 +1,18 @@
+// @preconcurrency import FirebaseAuth
+import FirebaseAuthSwiftUI
+
+public enum FacebookLoginType {
+  case classic
+  case limitedLogin
+}
+
+public class FacebookProviderSwift: FacebookProviderProtocol {
+  let shortName = "Facebook"
+  let providerId = "facebook.com"
+  var loginType: FacebookLoginType
+  public init(loginType: FacebookLoginType = FacebookLoginType.classic) {
+    self.loginType = loginType
+  }
+
+  public func signInWithFacebook() {}
+}

FirebaseSwiftUI/FirebaseFacebookSwiftUI/Sources/Views/FacebookButtonView.swift

@@ -0,0 +1,34 @@
+import FirebaseAuthSwiftUI
+import SwiftUI
+
+@MainActor
+public struct FacebookButtonView {
+  @Environment(AuthService.self) private var authService
+  @State private var errorMessage = ""
+
+  public init() {}
+
+  private func signInWithFacebook() async {}
+}
+
+extension FacebookButtonView: View {
+  public var body: some View {
+    Button(action: {
+      Task {
+        try await signInWithFacebook()
+      }
+    }) {
+      if authService.authenticationState != .authenticating {
+        Text(authService.authenticationFlow == .login ? "Login with Google" : "Sign-up with Google")
+          .padding(.vertical, 8)
+          .frame(maxWidth: .infinity)
+      } else {
+        ProgressView()
+          .progressViewStyle(CircularProgressViewStyle(tint: .white))
+          .padding(.vertical, 8)
+          .frame(maxWidth: .infinity)
+      }
+    }
+    Text(errorMessage).foregroundColor(.red)
+  }
+}

Package.swift

@@ -283,11 +283,11 @@ let package = Package(
     ),
     .target(
       name: "FirebaseFacebookSwiftUI",
-      path: "FirebaseSwiftUI/FirebaseFacebookSwiftUI/Sources",
       dependencies: [
         "FirebaseAuthSwiftUI",
         .product(name: "FacebookLogin", package: "Facebook"),
       ],
+      path: "FirebaseSwiftUI/FirebaseFacebookSwiftUI/Sources"
     ),
     .testTarget(
       name: "FirebaseFacebookSwiftUITests",

samples/swiftui/FirebaseSwiftUIExample/FirebaseSwiftUIExample.xcodeproj/project.pbxproj

@@ -9,6 +9,7 @@
 /* Begin PBXBuildFile section */
 		4607CC9C2D9BFE29009EC3F5 /* FirebaseAuthSwiftUI in Frameworks */ = {isa = PBXBuildFile; productRef = 4607CC9B2D9BFE29009EC3F5 /* FirebaseAuthSwiftUI */; };
 		4607CC9E2D9BFE29009EC3F5 /* FirebaseGoogleSwiftUI in Frameworks */ = {isa = PBXBuildFile; productRef = 4607CC9D2D9BFE29009EC3F5 /* FirebaseGoogleSwiftUI */; };
+		4670DEA72D9EA9E100E0D36A /* FirebaseFacebookSwiftUI in Frameworks */ = {isa = PBXBuildFile; productRef = 4670DEA62D9EA9E100E0D36A /* FirebaseFacebookSwiftUI */; };
 		46CB7B252D773F2100F1FD0A /* GoogleService-Info.plist in Resources */ = {isa = PBXBuildFile; fileRef = 46CB7B242D773F2100F1FD0A /* GoogleService-Info.plist */; };
 		46F89C392D64B04E000F8BC0 /* FirebaseAuthSwiftUI in Frameworks */ = {isa = PBXBuildFile; productRef = 46F89C382D64B04E000F8BC0 /* FirebaseAuthSwiftUI */; };
 		46F89C4D2D64BB9B000F8BC0 /* FirebaseAuthSwiftUI in Frameworks */ = {isa = PBXBuildFile; productRef = 46F89C4C2D64BB9B000F8BC0 /* FirebaseAuthSwiftUI */; };
@@ -74,6 +75,7 @@
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				4670DEA72D9EA9E100E0D36A /* FirebaseFacebookSwiftUI in Frameworks */,
 				46F89C392D64B04E000F8BC0 /* FirebaseAuthSwiftUI in Frameworks */,
 				46F89C4D2D64BB9B000F8BC0 /* FirebaseAuthSwiftUI in Frameworks */,
 				4607CC9E2D9BFE29009EC3F5 /* FirebaseGoogleSwiftUI in Frameworks */,
@@ -151,6 +153,7 @@
 				46F89C4C2D64BB9B000F8BC0 /* FirebaseAuthSwiftUI */,
 				4607CC9B2D9BFE29009EC3F5 /* FirebaseAuthSwiftUI */,
 				4607CC9D2D9BFE29009EC3F5 /* FirebaseGoogleSwiftUI */,
+				4670DEA62D9EA9E100E0D36A /* FirebaseFacebookSwiftUI */,
 			);
 			productName = FirebaseSwiftUIExample;
 			productReference = 46F89C082D64A86C000F8BC0 /* FirebaseSwiftUIExample.app */;
@@ -622,6 +625,11 @@
 			isa = XCSwiftPackageProductDependency;
 			productName = FirebaseGoogleSwiftUI;
 		};
+		4670DEA62D9EA9E100E0D36A /* FirebaseFacebookSwiftUI */ = {
+			isa = XCSwiftPackageProductDependency;
+			package = 4607CC9A2D9BFE29009EC3F5 /* XCLocalSwiftPackageReference "../../../../firebaseUI-ios" */;
+			productName = FirebaseFacebookSwiftUI;
+		};
 		46F89C382D64B04E000F8BC0 /* FirebaseAuthSwiftUI */ = {
 			isa = XCSwiftPackageProductDependency;
 			productName = FirebaseAuthSwiftUI;