Update LoginView.swift

GoogleSignInFirebaseSwiftUI/LoginView.swift

@@ -1,25 +1,22 @@
-//
-//  LoginView.swift
-//  GoogleSignInFirebaseSwiftUI
-//
-//  Created by Sheehan Munim on 6/9/24.
-//
-
 import SwiftUI
 import Firebase
+import FirebaseAuth
 import GoogleSignIn
 import GoogleSignInSwift
+import AuthenticationServices
+import CryptoKit
 
 struct LoginView: View {
     @State private var email = ""
     @State private var password = ""
     @State private var loginError = ""
     @State private var isLoggedIn = false
     @State private var vm = AuthenticationView()
+    @Environment(\.colorScheme) var colorScheme // 다크모드 확인
 
     var body: some View {
-        NavigationStack{
-            VStack{
+        NavigationStack {
+            VStack {
                 TextField("Email", text: $email)
                     .padding()
                     .background(Color(.secondarySystemBackground))
@@ -30,54 +27,115 @@ struct LoginView: View {
                     .background(Color(.secondarySystemBackground))
                     .cornerRadius(10)
 
-                Button(action:{login()
-                }){
+                Button(action: { login() }) {
                     Text("Login")
                         .foregroundColor(.white)
                         .frame(width: 200, height: 50)
                         .background(Color.blue)
                         .cornerRadius(10)
                 }
 
-                GoogleSignInButton(viewModel: GoogleSignInButtonViewModel(scheme: .light)){
-
-
+                // Google 로그인 버튼
+                GoogleSignInButton(viewModel: GoogleSignInButtonViewModel(scheme: .light)) {
                     vm.signInWithGoogle()
                 }
-                if !loginError.isEmpty{
+                .frame(height: 50)
+                .cornerRadius(10)
+                .padding(.top, 20)
+                .background(colorScheme == .dark ? Color.black : Color.white) // 다크모드 체크
+                .foregroundColor(colorScheme == .dark ? .white : .black) // 다크모드에서 흰색 글자, 흰색 배경
+
+                // Apple 로그인 버튼 추가
+                SignInWithAppleButton(.signIn, onRequest: { request in
+                    request.requestedScopes = [.fullName, .email]
+                }, onCompletion: { result in
+                    switch result {
+                    case .success(let authResults):
+                        if let appleIDCredential = authResults.credential as? ASAuthorizationAppleIDCredential {
+                            handleAppleIDCredential(credential: appleIDCredential)
+                        }
+                    case .failure(let error):
+                        print("Apple 로그인 실패: \(error.localizedDescription)")
+                    }
+                })
+                .frame(height: 50)
+                .cornerRadius(10)
+                .padding(.top, 20)
+                .background(colorScheme == .dark ? Color.black : Color.white) // 다크모드 체크
+                .foregroundColor(colorScheme == .dark ? .white : .black) // 다크모드에서 흰색 글자, 흰색 배경
+
+                if !loginError.isEmpty {
                     Text(loginError)
                         .foregroundColor(.red)
                         .padding()
                 }
 
-                NavigationLink(value: isLoggedIn){
+                NavigationLink(value: isLoggedIn) {
                     EmptyView()
                 }
-                .navigationDestination(isPresented: $isLoggedIn){
+                .navigationDestination(isPresented: $isLoggedIn) {
                     ContentView()
                         .navigationBarBackButtonHidden(true)
                 }
-
-
             }
             .padding()
-
-
         }
     }
-    
+
     func login() {
         Auth.auth().signIn(withEmail: email, password: password) { authResult, error in
-
             if let error = error {
                 loginError = error.localizedDescription
             }
-
             isLoggedIn = true
         }
     }
+
+    func handleAppleIDCredential(credential: ASAuthorizationAppleIDCredential) {
+        guard let identityToken = credential.identityToken,
+              let tokenString = String(data: identityToken, encoding: .utf8) else {
+            print("Apple ID Token을 얻을 수 없습니다.")
+            return
+        }
+
+        let nonce = randomNonceString()
+        let sha256Nonce = sha256(nonce)
+        let firebaseCredential = OAuthProvider.credential(providerID: .apple, idToken: tokenString, rawNonce: sha256Nonce)
+
+        Auth.auth().signIn(with: firebaseCredential) { (authResult, error) in
+            if let error = error {
+                print("Firebase 로그인 실패: \(error.localizedDescription)")
+            } else {
+                print("Firebase Apple 로그인 성공")
+            }
+        }
+    }
+
+    func randomNonceString(length: Int = 32) -> String {
+        let charset: [Character] = Array("0123456789ABCDEFGHIJKLMNOPQRSTUVXYZabcdefghijklmnopqrstuvwxyz-._")
+        var result = ""
+        var remainingLength = length
+        while remainingLength > 0 {
+            let randoms: [UInt8] = (0..<16).map { _ in UInt8.random(in: 0...255) }
+            randoms.forEach { random in
+                if remainingLength == 0 { return }
+                if random < charset.count {
+                    result.append(charset[Int(random)])
+                    remainingLength -= 1
+                }
+            }
+        }
+        return result
+    }
+
+    func sha256(_ input: String) -> String {
+        let inputData = Data(input.utf8)
+        let hashed = SHA256.hash(data: inputData)
+        return hashed.map { String(format: "%02x", $0) }.joined()
+    }
 }
 
 #Preview {
     LoginView()
 }
+