feat: 添加中文注释
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jinyaqiu
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@ -1,31 +1,31 @@
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import SwiftUI
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import AuthenticationServices
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import Alamofire
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import CryptoKit
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import AuthenticationServices // 苹果登录功能
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import Alamofire // 网络请求
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import CryptoKit // 加密功能
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/// Main login view that handles Apple Sign In
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/// 主登录视图 - 处理苹果登录
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struct LoginView: View {
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// MARK: - Properties
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@Environment(\.dismiss) private var dismiss
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@State private var isLoading = false
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@State private var showError = false
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@State private var errorMessage = ""
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@State private var currentNonce: String?
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// MARK: - 属性
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@Environment(\.dismiss) private var dismiss // 用于关闭视图
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@State private var isLoading = false // 加载状态
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@State private var showError = false // 是否显示错误
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@State private var errorMessage = "" // 错误信息
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@State private var currentNonce: String? // 用于防止重放攻击的随机数
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// MARK: - Body
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// MARK: - 视图主体
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var body: some View {
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ZStack {
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// Background
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// 背景
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Color(.systemBackground)
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.edgesIgnoringSafeArea(.all)
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// Main content
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// 主要内容
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VStack(spacing: 24) {
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Spacer()
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appHeaderView()
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signInButton()
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appHeaderView() // 应用标题
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signInButton() // 登录按钮
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Spacer()
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termsAndPrivacyView()
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termsAndPrivacyView() // 服务条款和隐私政策
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}
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.padding()
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.alert(isPresented: $showError) {
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@ -36,7 +36,7 @@ struct LoginView: View {
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)
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}
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// Loading indicator
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// 加载指示器
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if isLoading {
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loadingView()
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}
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@ -44,9 +44,9 @@ struct LoginView: View {
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.navigationBarHidden(true)
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}
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// MARK: - View Components
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// MARK: - 视图组件
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/// App header with icon and welcome text
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/// 应用标题视图
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private func appHeaderView() -> some View {
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VStack(spacing: 16) {
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Image(systemName: "person.circle.fill")
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@ -66,27 +66,27 @@ struct LoginView: View {
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.padding(.bottom, 40)
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}
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/// Apple Sign In button
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/// 苹果登录按钮
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private func signInButton() -> some View {
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SignInWithAppleButton(
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onRequest: { request in
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// Generate nonce for security
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// 生成随机数用于安全验证
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let nonce = String.randomURLSafeString(length: 32)
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self.currentNonce = nonce
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// Configure the request
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request.requestedScopes = [.fullName, .email]
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request.nonce = self.sha256(nonce)
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// 配置登录请求
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request.requestedScopes = [.fullName, .email] // 请求用户全名和邮箱
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request.nonce = self.sha256(nonce) // 设置nonce
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},
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onCompletion: handleAppleSignIn
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onCompletion: handleAppleSignIn // 登录完成处理
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)
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.signInWithAppleButtonStyle(.black)
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.signInWithAppleButtonStyle(.black) // 按钮样式
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.frame(height: 50)
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.padding(.horizontal, 40)
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.cornerRadius(10)
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}
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/// Terms and Privacy policy links
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/// 服务条款和隐私政策链接
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private func termsAndPrivacyView() -> some View {
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VStack(spacing: 8) {
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Text("By continuing, you agree to our")
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@ -113,7 +113,7 @@ struct LoginView: View {
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.padding(.bottom, 24)
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}
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/// Loading overlay view
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/// 加载视图
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private func loadingView() -> some View {
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return ZStack {
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Color.black.opacity(0.4)
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@ -125,9 +125,9 @@ struct LoginView: View {
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}
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}
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// MARK: - Apple Sign In Handlers
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// MARK: - 苹果登录处理
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/// Handles the result of Apple Sign In
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/// 处理苹果登录结果
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private func handleAppleSignIn(result: Result<ASAuthorization, Error>) {
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switch result {
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case .success(let authResults):
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@ -137,14 +137,14 @@ struct LoginView: View {
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}
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}
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/// Processes the Apple ID credential
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/// 处理苹果ID凭证
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private func processAppleIDCredential(_ credential: ASAuthorizationCredential) {
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guard let appleIDCredential = credential as? ASAuthorizationAppleIDCredential else {
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showError(message: "Unable to process Apple ID credentials")
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showError(message: "无法处理Apple ID凭证")
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return
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}
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// Get user data
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// 获取用户数据
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let userId = appleIDCredential.user
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let email = appleIDCredential.email ?? ""
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let fullName = [
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@ -154,20 +154,20 @@ struct LoginView: View {
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.compactMap { $0 }
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.joined(separator: " ")
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// Get the identity token
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// 获取身份令牌
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guard let identityTokenData = appleIDCredential.identityToken,
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let identityToken = String(data: identityTokenData, encoding: .utf8) else {
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showError(message: "Unable to fetch identity token")
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showError(message: "无法获取身份令牌")
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return
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}
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// Get the authorization code (optional)
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// 获取授权码（可选）
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var authCode: String? = nil
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if let authCodeData = appleIDCredential.authorizationCode {
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authCode = String(data: authCodeData, encoding: .utf8)
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}
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// Proceed with backend authentication
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// 调用后端接口进行认证
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authenticateWithBackend(
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userId: userId,
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email: email,
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@ -177,9 +177,9 @@ struct LoginView: View {
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)
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}
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// MARK: - Network Operations
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// MARK: - 网络操作
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/// Authenticates the user with the backend server
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/// 与后端服务器进行认证
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private func authenticateWithBackend(
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userId: String,
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email: String,
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@ -189,6 +189,7 @@ struct LoginView: View {
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) {
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isLoading = true
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// TODO: 替换为您的后端API地址
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let url = "https://your-api-endpoint.com/api/auth/apple"
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var parameters: [String: Any] = [
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"appleUserId": userId,
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@ -197,11 +198,12 @@ struct LoginView: View {
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"identityToken": identityToken
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]
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// Add authorization code if available
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// 添加授权码（如果存在）
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if let authCode = authCode {
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parameters["authorizationCode"] = authCode
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}
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// 发送认证请求
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AF.request(url, method: .post, parameters: parameters, encoding: JSONEncoding.default)
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.validate()
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.responseJSON { response in
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@ -209,7 +211,7 @@ struct LoginView: View {
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switch response.result {
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case .success(let value):
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print("Authentication successful: \(value)")
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print("认证成功: \(value)")
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self.handleSuccessfulAuthentication()
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case .failure(let error):
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self.handleAuthenticationError(error)
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@ -217,30 +219,30 @@ struct LoginView: View {
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}
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}
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// MARK: - Helper Methods
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// MARK: - 辅助方法
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/// Handles successful authentication
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/// 处理认证成功
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private func handleSuccessfulAuthentication() {
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DispatchQueue.main.async {
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self.dismiss()
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self.dismiss() // 关闭登录视图
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}
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}
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/// Handles sign in errors
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/// 处理登录错误
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private func handleSignInError(_ error: Error) {
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let errorMessage = (error as NSError).localizedDescription
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print("Apple Sign In failed: \(errorMessage)")
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showError(message: "Sign in failed: \(error.localizedDescription)")
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print("苹果登录失败: \(errorMessage)")
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showError(message: "登录失败: \(error.localizedDescription)")
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}
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/// Handles authentication errors
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/// 处理认证错误
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private func handleAuthenticationError(_ error: AFError) {
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let errorMessage = error.localizedDescription
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print("API Error: \(errorMessage)")
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showError(message: "Failed to sign in: \(errorMessage)")
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print("API错误: \(errorMessage)")
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showError(message: "登录失败: \(errorMessage)")
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}
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/// Shows error message to the user
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/// 显示错误信息
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private func showError(message: String) {
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DispatchQueue.main.async {
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self.errorMessage = message
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@ -248,12 +250,13 @@ struct LoginView: View {
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}
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}
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/// Opens a URL in Safari
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/// 在Safari中打开URL
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private func openURL(_ string: String) {
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guard let url = URL(string: string) else { return }
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UIApplication.shared.open(url)
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}
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/// SHA256哈希函数
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private func sha256(_ input: String) -> String {
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let inputData = Data(input.utf8)
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let hashedData = SHA256.hash(data: inputData)
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@ -262,12 +265,12 @@ struct LoginView: View {
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}
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}
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// MARK: - String Extension for Random String Generation
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// MARK: - 字符串扩展：生成随机字符串
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extension String {
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/// Generates a random string of the specified length using URL-safe characters
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/// - Parameter length: The length of the random string to generate
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/// - Returns: A random string containing URL-safe characters
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/// 生成指定长度的随机URL安全字符串
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/// - Parameter length: 字符串长度
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/// - Returns: 随机字符串
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static func randomURLSafeString(length: Int) -> String {
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let characters = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-._~"
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var randomString = ""
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@ -282,7 +285,7 @@ extension String {
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}
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}
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// MARK: - Preview
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// MARK: - 预览
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struct LoginView_Previews: PreviewProvider {
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static var previews: some View {
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LoginView()
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