310 lines
10 KiB
Swift
310 lines
10 KiB
Swift
import SwiftUI
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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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/// 主登录视图 - 处理苹果登录
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struct LoginView: View {
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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: - 视图主体
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var body: some View {
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ZStack {
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// 背景
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Color(.systemBackground)
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.edgesIgnoringSafeArea(.all)
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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() // 应用标题
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signInButton() // 登录按钮
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Spacer()
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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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Alert(
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title: Text("Error"),
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message: Text(errorMessage),
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dismissButton: .default(Text("OK"))
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)
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}
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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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}
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.navigationBarHidden(true)
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}
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// MARK: - 视图组件
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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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.resizable()
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.aspectRatio(contentMode: .fit)
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.frame(width: 80, height: 80)
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.foregroundColor(.blue)
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Text("Welcome to Wake")
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.font(.largeTitle)
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.fontWeight(.bold)
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Text("Sign in to continue")
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.font(.subheadline)
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.foregroundColor(.secondary)
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}
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.padding(.bottom, 40)
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}
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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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// 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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// 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 // 登录完成处理
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)
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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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/// 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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.font(.caption)
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.foregroundColor(.secondary)
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HStack(spacing: 16) {
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Button("Terms of Service") {
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openURL("https://yourwebsite.com/terms")
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}
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.font(.caption)
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.foregroundColor(.blue)
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Text("•")
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.foregroundColor(.secondary)
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Button("Privacy Policy") {
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openURL("https://yourwebsite.com/privacy")
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}
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.font(.caption)
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.foregroundColor(.blue)
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}
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}
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.padding(.bottom, 24)
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}
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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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.edgesIgnoringSafeArea(.all)
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ProgressView()
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.scaleEffect(1.5)
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.progressViewStyle(CircularProgressViewStyle(tint: .white))
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}
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}
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// MARK: - 苹果登录处理
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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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print("🔵 [Apple Sign In] 开始处理登录结果...")
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switch result {
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case .success(let authResults):
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print("✅ [Apple Sign In] 登录授权成功")
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processAppleIDCredential(authResults.credential)
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case .failure(let error):
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print("❌ [Apple Sign In] 登录失败: \(error.localizedDescription)")
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handleSignInError(error)
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}
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}
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/// 处理苹果ID凭证
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private func processAppleIDCredential(_ credential: ASAuthorizationCredential) {
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print("🔵 [Apple ID] 开始处理凭证...")
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guard let appleIDCredential = credential as? ASAuthorizationAppleIDCredential else {
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print("❌ [Apple ID] 凭证类型不匹配")
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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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// 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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appleIDCredential.fullName?.givenName,
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appleIDCredential.fullName?.familyName
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]
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.compactMap { $0 }
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.joined(separator: " ")
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print("ℹ️ [Apple ID] 用户数据 - ID: \(userId), 邮箱: \(email.isEmpty ? "未提供" : email), 姓名: \(fullName.isEmpty ? "未提供" : fullName)")
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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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print("❌ [Apple ID] 无法获取身份令牌")
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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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// 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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print("ℹ️ [Apple ID] 获取到授权码")
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} else {
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print("ℹ️ [Apple ID] 未获取到授权码（可选）")
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}
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print("🔵 [Apple ID] 准备调用后端认证...")
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authenticateWithBackend(
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userId: userId,
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email: email,
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name: fullName,
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identityToken: identityToken,
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authCode: authCode
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)
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}
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// MARK: - 网络操作
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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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name: String,
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identityToken: String,
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authCode: String?
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) {
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isLoading = true
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print("🔵 [Backend] 开始后端认证...")
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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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"email": email,
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"name": name,
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"identityToken": identityToken
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]
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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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print("📤 [Backend] 请求参数: \(parameters)")
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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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self.isLoading = false
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switch response.result {
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case .success(let value):
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print("✅ [Backend] 认证成功: \(value)")
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self.handleSuccessfulAuthentication()
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case .failure(let error):
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print("❌ [Backend] 认证失败: \(error.localizedDescription)")
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if let data = response.data, let json = String(data: data, encoding: .utf8) {
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print("❌ [Backend] 错误详情: \(json)")
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}
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self.handleAuthenticationError(error)
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}
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}
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}
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// MARK: - 辅助方法
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/// 处理认证成功
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private func handleSuccessfulAuthentication() {
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print("✅ [Auth] 登录成功，准备关闭登录页面...")
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DispatchQueue.main.async {
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self.dismiss()
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}
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}
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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("❌ [Auth] 登录错误: \(errorMessage)")
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showError(message: "登录失败: \(error.localizedDescription)")
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}
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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("❌ [Auth] 认证错误: \(errorMessage)")
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showError(message: "登录失败: \(errorMessage)")
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}
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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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self.showError = true
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}
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}
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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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let hashString = hashedData.compactMap { String(format: "%02x", $0) }.joined()
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return hashString
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}
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}
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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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/// 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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for _ in 0..<length {
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let randomIndex = Int.random(in: 0..<characters.count)
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let character = characters[characters.index(characters.startIndex, offsetBy: randomIndex)]
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randomString.append(character)
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}
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return randomString
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}
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}
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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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}
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} |