ios – SwiftUI – Firebase, Signal In With Apple, customized Button

I wish to create my very own SignInWithAppleButton with my very own design, following the rules after all.

I’m having bother translating the startSignInWithAppleFlow perform from Swift to SwiftUI.

struct ContentView: View {
    
    var physique: some View {
        ...
        AuthButton(title: "Join with Apple", iconName: "appleIcon") {
            authViewModel.signInWithApple()
        }
        ...
    }
}

struct AuthButton: View {
    let title: String
    let iconName: String
    let motion: () -> Void

    var physique: some View {
        Button {
            motion()
        } label: {
            RoundedRectangle(cornerRadius: 16)
                .fill(.clear)
                .body(peak: 80)
                .overlay(
                    Textual content(title)
                        .font(.regular16)
                        .foregroundColor(.black)
                )
                .overlay(
                    HStack {
                        HorizontalSpacer(width: 32)
                        Picture(iconName)
                            .resizable()
                            .body(width: 30, peak: 30, alignment: .heart)
                        Spacer()
                    }
                )
        }
        .buttonStyle(AuthButtonStyle())
    }
}

class AuthenticationViewModel: ObservableObject {
    func signInWithApple() {
        Unclear what ought to be right here!
    }

    personal func randomNonceString(size: Int = 32) -> String {
        precondition(size > 0)
        let charset: [Character] =
            Array("0123456789ABCDEFGHIJKLMNOPQRSTUVXYZabcdefghijklmnopqrstuvwxyz-._")
        var outcome = ""
        var remainingLength = size

        whereas remainingLength > 0 {
            let randoms: [UInt8] = (0 ..< 16).map { _ in
                var random: UInt8 = 0
                let errorCode = SecRandomCopyBytes(kSecRandomDefault, 1, &random)
                if errorCode != errSecSuccess {
                    fatalError(
                        "Unable to generate nonce. SecRandomCopyBytes failed with OSStatus (errorCode)"
                    )
                }
                return random
            }

            randoms.forEach { random in
                if remainingLength == 0 {
                    return
                }

                if random < charset.depend {
                outcome.append(charset[Int(random)])
                remainingLength -= 1
                }
            }
        }

        return outcome
    }

    personal func sha256(_ enter: String) -> String {
        let inputData = Knowledge(enter.utf8)
        let hashedData = SHA256.hash(knowledge: inputData)
        let hashString = hashedData.compactMap {
            String(format: "%02x", $0)
        }.joined()

        return hashString
    }
}