align iOS with Android: auth, SSO login, course selection, phone binding, 4 tabs

ios/OralTrainer/Services/AuthAPI.swift

@@ -0,0 +1,172 @@
+import Foundation
+
+// MARK: - Models
+
+struct AuthUser: Codable {
+    let id: String
+    let username: String
+    let nickname: String
+}
+
+struct AuthSession: Codable {
+    let token: String
+    let user: AuthUser
+}
+
+struct SsoExchangeResult: Codable {
+    let token: String
+    let user: AuthUser
+    let phoneBound: Bool
+    let isNewUser: Bool
+
+    private enum CodingKeys: String, CodingKey {
+        case token, user
+        case phoneBound = "phone_bound"
+        case isNewUser = "is_new_user"
+    }
+}
+
+struct Course: Identifiable, Codable {
+    let videoHash: String
+    let title: String
+    let durationMs: Int64?
+    let language: String?
+    let sentenceCount: Int
+    let streamUrl: String
+    let enrolled: Bool
+
+    var id: String { videoHash }
+
+    private enum CodingKeys: String, CodingKey {
+        case title, language, enrolled
+        case videoHash = "video_hash"
+        case durationMs = "duration_ms"
+        case sentenceCount = "sentence_count"
+        case streamUrl = "stream_url"
+    }
+
+    func toVideoSummary() -> TrainingVideoSummary {
+        TrainingVideoSummary(
+            videoHash: videoHash,
+            title: title,
+            streamUrl: streamUrl,
+            durationMs: durationMs,
+            sizeBytes: 0,
+            language: language,
+            sentenceCount: sentenceCount,
+            status: "ready"
+        )
+    }
+}
+
+// MARK: - Auth Error
+
+enum AuthError: LocalizedError {
+    case badStatus(Int, String)
+
+    var errorDescription: String? {
+        switch self {
+        case .badStatus(let code, let body):
+            return "HTTP \(code): \(body.prefix(200))"
+        }
+    }
+}
+
+// MARK: - Auth API
+
+enum AuthAPI {
+    private static var baseURL: String { AppConfig.serverBaseURL }
+
+    // MARK: Login / Register
+
+    static func login(username: String, password: String) async throws -> AuthSession {
+        try await authRequest(path: "/api/v1/auth/login", body: [
+            "username": username,
+            "password": password,
+        ])
+    }
+
+    static func register(
+        username: String,
+        password: String,
+        nickname: String,
+        phone: String
+    ) async throws -> AuthSession {
+        try await authRequest(path: "/api/v1/auth/register", body: [
+            "username": username,
+            "password": password,
+            "nickname": nickname,
+            "phone": phone,
+        ])
+    }
+
+    // MARK: SSO
+
+    static func ssoExchange(jwtToken: String) async throws -> SsoExchangeResult {
+        let url = URL(string: "\(baseURL)/api/v1/auth/sso/exchange")!
+        var request = URLRequest(url: url)
+        request.httpMethod = "POST"
+        request.setValue("application/json", forHTTPHeaderField: "Content-Type")
+        request.httpBody = try JSONSerialization.data(withJSONObject: ["access_token": jwtToken])
+
+        let (data, response) = try await URLSession.shared.data(for: request)
+        guard let http = response as? HTTPURLResponse, (200...299).contains(http.statusCode) else {
+            let status = (response as? HTTPURLResponse)?.statusCode ?? 0
+            let body = String(data: data, encoding: .utf8) ?? ""
+            throw AuthError.badStatus(status, body)
+        }
+        return try JSONDecoder().decode(SsoExchangeResult.self, from: data)
+    }
+
+    static func ssoBindPhone(token: String, phone: String) async throws {
+        let url = URL(string: "\(baseURL)/api/v1/auth/sso/bind-phone")!
+        var request = URLRequest(url: url)
+        request.httpMethod = "POST"
+        request.setValue("application/json", forHTTPHeaderField: "Content-Type")
+        request.setValue("Bearer \(token)", forHTTPHeaderField: "Authorization")
+        request.httpBody = try JSONSerialization.data(withJSONObject: ["phone": phone])
+
+        let (data, response) = try await URLSession.shared.data(for: request)
+        guard let http = response as? HTTPURLResponse, (200...299).contains(http.statusCode) else {
+            let status = (response as? HTTPURLResponse)?.statusCode ?? 0
+            let body = String(data: data, encoding: .utf8) ?? ""
+            throw AuthError.badStatus(status, body)
+        }
+    }
+
+    // MARK: Courses
+
+    static func courses(token: String) async throws -> [Course] {
+        let url = URL(string: "\(baseURL)/api/v1/courses")!
+        var request = URLRequest(url: url)
+        request.httpMethod = "GET"
+        request.setValue("application/json", forHTTPHeaderField: "Accept")
+        request.setValue("Bearer \(token)", forHTTPHeaderField: "Authorization")
+
+        let (data, response) = try await URLSession.shared.data(for: request)
+        guard let http = response as? HTTPURLResponse, (200...299).contains(http.statusCode) else {
+            let status = (response as? HTTPURLResponse)?.statusCode ?? 0
+            let body = String(data: data, encoding: .utf8) ?? ""
+            throw AuthError.badStatus(status, body)
+        }
+        return try JSONDecoder().decode([Course].self, from: data)
+    }
+
+    // MARK: Private
+
+    private static func authRequest(path: String, body: [String: Any]) async throws -> AuthSession {
+        let url = URL(string: "\(baseURL)\(path)")!
+        var request = URLRequest(url: url)
+        request.httpMethod = "POST"
+        request.setValue("application/json", forHTTPHeaderField: "Content-Type")
+        request.httpBody = try JSONSerialization.data(withJSONObject: body)
+
+        let (data, response) = try await URLSession.shared.data(for: request)
+        guard let http = response as? HTTPURLResponse, (200...299).contains(http.statusCode) else {
+            let status = (response as? HTTPURLResponse)?.statusCode ?? 0
+            let body = String(data: data, encoding: .utf8) ?? ""
+            throw AuthError.badStatus(status, body)
+        }
+        return try JSONDecoder().decode(AuthSession.self, from: data)
+    }
+}

ios/OralTrainer/Views/AuthView.swift

@@ -0,0 +1,506 @@
+import SwiftUI
+
+// MARK: - Auth Manager (shared state)
+
+@MainActor
+final class AuthManager: ObservableObject {
+    @Published var token: String
+    @Published var nickname: String
+    @Published var showingRegister = false
+    @Published var showingSSO = false
+    @Published var showingPhoneBinding = false
+    @Published var ssoPendingToken: String?
+
+    init() {
+        let defaults = UserDefaults.standard
+        token = defaults.string(forKey: "oral_trainer_token") ?? ""
+        nickname = defaults.string(forKey: "oral_trainer_nickname") ?? ""
+    }
+
+    var isLoggedIn: Bool { !token.isEmpty }
+
+    func saveSession(_ session: AuthSession) {
+        token = session.token
+        nickname = session.user.nickname
+        let defaults = UserDefaults.standard
+        defaults.set(session.token, forKey: "oral_trainer_token")
+        defaults.set(session.user.nickname, forKey: "oral_trainer_nickname")
+    }
+
+    func logout() {
+        token = ""
+        nickname = ""
+        showingRegister = false
+        showingSSO = false
+        showingPhoneBinding = false
+        ssoPendingToken = nil
+        let defaults = UserDefaults.standard
+        defaults.removeObject(forKey: "oral_trainer_token")
+        defaults.removeObject(forKey: "oral_trainer_nickname")
+    }
+}
+
+// MARK: - Auth View (root auth screen)
+
+struct AuthView: View {
+    @ObservedObject var auth: AuthManager
+    @State private var username = ""
+    @State private var password = ""
+    @State private var statusText = ""
+    @State private var isLoading = false
+    var onLoginSuccess: () -> Void
+
+    var body: some View {
+        VStack(alignment: .leading, spacing: 0) {
+            Spacer()
+            Text("八哥口语")
+                .font(.system(size: 32, weight: .bold))
+                .foregroundColor(.white)
+            Text("请先注册或登录后开始学习")
+                .font(.system(size: 15))
+                .foregroundColor(Theme.textMuted)
+                .padding(.top, 6)
+                .padding(.bottom, 24)
+
+            TextField("用户名", text: $username)
+                .textFieldStyle(.plain)
+                .autocorrectionDisabled()
+                .textInputAutocapitalization(.never)
+                .padding(12)
+                .background(Theme.surface)
+                .clipShape(RoundedRectangle(cornerRadius: 8))
+                .overlay(RoundedRectangle(cornerRadius: 8).stroke(Theme.border, lineWidth: 1))
+
+            SecureField("密码（至少 8 位）", text: $password)
+                .textFieldStyle(.plain)
+                .padding(12)
+                .padding(.top, 8)
+                .background(Theme.surface)
+                .clipShape(RoundedRectangle(cornerRadius: 8))
+                .overlay(RoundedRectangle(cornerRadius: 8).stroke(Theme.border, lineWidth: 1))
+
+            Button {
+                Task { await login() }
+            } label: {
+                Text(isLoading ? "登录中..." : "登录")
+                    .frame(maxWidth: .infinity)
+                    .frame(height: 44)
+                    .background(Theme.accent)
+                    .foregroundColor(.white)
+                    .clipShape(RoundedRectangle(cornerRadius: 8))
+            }
+            .padding(.top, 20)
+            .disabled(isLoading)
+
+            Button {
+                auth.showingRegister = true
+            } label: {
+                Text("注册")
+                    .frame(maxWidth: .infinity)
+                    .frame(height: 44)
+                    .background(Theme.surface)
+                    .foregroundColor(.white)
+                    .clipShape(RoundedRectangle(cornerRadius: 8))
+            }
+            .padding(.top, 8)
+
+            Text("── 或 ──")
+                .font(.system(size: 13))
+                .foregroundColor(Theme.textMuted)
+                .frame(maxWidth: .infinity)
+                .padding(.top, 12)
+
+            Button {
+                auth.showingSSO = true
+            } label: {
+                Text("第一课堂一键登录")
+                    .frame(maxWidth: .infinity)
+                    .frame(height: 44)
+                    .background(Theme.buttonBlue)
+                    .foregroundColor(.white)
+                    .clipShape(RoundedRectangle(cornerRadius: 8))
+            }
+            .padding(.top, 8)
+
+            if !statusText.isEmpty {
+                Text(statusText)
+                    .font(.system(size: 13))
+                    .foregroundColor(Theme.accentLight)
+                    .padding(.top, 14)
+            }
+            Spacer()
+        }
+        .padding(.horizontal, 28)
+        .background(Theme.background.ignoresSafeArea())
+        .fullScreenCover(isPresented: $auth.showingRegister) {
+            RegisterView(auth: auth) {
+                onLoginSuccess()
+            }
+        }
+        .fullScreenCover(isPresented: $auth.showingSSO) {
+            SSOWebView(auth: auth) {
+                onLoginSuccess()
+            }
+        }
+        .fullScreenCover(isPresented: $auth.showingPhoneBinding) {
+            PhoneBindingView(auth: auth) {
+                onLoginSuccess()
+            }
+        }
+    }
+
+    private func login() async {
+        guard !username.isEmpty, !password.isEmpty else {
+            statusText = "请填写用户名和密码"
+            return
+        }
+        isLoading = true
+        statusText = "登录中..."
+        defer { isLoading = false }
+        do {
+            let session = try await AuthAPI.login(username: username, password: password)
+            auth.saveSession(session)
+            onLoginSuccess()
+        } catch {
+            statusText = "失败：\(error.localizedDescription)"
+        }
+    }
+}
+
+// MARK: - Register View
+
+struct RegisterView: View {
+    @ObservedObject var auth: AuthManager
+    @Environment(\.dismiss) private var dismiss
+    @State private var username = ""
+    @State private var password = ""
+    @State private var nickname = ""
+    @State private var phone = ""
+    @State private var statusText = ""
+    @State private var isLoading = false
+    var onLoginSuccess: () -> Void
+
+    var body: some View {
+        ScrollView {
+            VStack(alignment: .leading, spacing: 0) {
+                Text("注册账号")
+                    .font(.system(size: 28, weight: .bold))
+                    .foregroundColor(.white)
+                Text("填写以下信息完成注册")
+                    .font(.system(size: 14))
+                    .foregroundColor(Theme.textMuted)
+                    .padding(.top, 6)
+                    .padding(.bottom, 24)
+
+                fieldLabel("用户名")
+                TextField("3-50 位字母、数字或下划线", text: $username)
+                    .textFieldStyle(.plain)
+                    .autocorrectionDisabled()
+                    .textInputAutocapitalization(.never)
+                    .padding(12)
+                    .background(Theme.surface)
+                    .clipShape(RoundedRectangle(cornerRadius: 8))
+                    .overlay(RoundedRectangle(cornerRadius: 8).stroke(Theme.border, lineWidth: 1))
+
+                fieldLabel("密码")
+                SecureField("至少 8 位", text: $password)
+                    .textFieldStyle(.plain)
+                    .padding(12)
+                    .background(Theme.surface)
+                    .clipShape(RoundedRectangle(cornerRadius: 8))
+                    .overlay(RoundedRectangle(cornerRadius: 8).stroke(Theme.border, lineWidth: 1))
+
+                fieldLabel("姓名")
+                TextField("你的真实姓名或昵称", text: $nickname)
+                    .textFieldStyle(.plain)
+                    .padding(12)
+                    .background(Theme.surface)
+                    .clipShape(RoundedRectangle(cornerRadius: 8))
+                    .overlay(RoundedRectangle(cornerRadius: 8).stroke(Theme.border, lineWidth: 1))
+
+                fieldLabel("手机号")
+                TextField("选填", text: $phone)
+                    .textFieldStyle(.plain)
+                    .keyboardType(.phonePad)
+                    .padding(12)
+                    .background(Theme.surface)
+                    .clipShape(RoundedRectangle(cornerRadius: 8))
+                    .overlay(RoundedRectangle(cornerRadius: 8).stroke(Theme.border, lineWidth: 1))
+
+                Button {
+                    Task { await register() }
+                } label: {
+                    Text(isLoading ? "注册中..." : "注册")
+                        .frame(maxWidth: .infinity)
+                        .frame(height: 48)
+                        .background(Theme.accent)
+                        .foregroundColor(.white)
+                        .clipShape(RoundedRectangle(cornerRadius: 8))
+                }
+                .padding(.top, 20)
+                .disabled(isLoading)
+
+                Button {
+                    dismiss()
+                } label: {
+                    Text("返回登录")
+                        .frame(maxWidth: .infinity)
+                        .frame(height: 44)
+                        .background(Theme.surface)
+                        .foregroundColor(.white)
+                        .clipShape(RoundedRectangle(cornerRadius: 8))
+                }
+                .padding(.top, 8)
+
+                if !statusText.isEmpty {
+                    Text(statusText)
+                        .font(.system(size: 13))
+                        .foregroundColor(Theme.accentLight)
+                        .padding(.top, 14)
+                }
+            }
+            .padding(.horizontal, 28)
+            .padding(.top, 60)
+        }
+        .background(Theme.background.ignoresSafeArea())
+    }
+
+    private func fieldLabel(_ text: String) -> some View {
+        Text(text)
+            .font(.system(size: 13))
+            .foregroundColor(Theme.textMuted)
+            .padding(.top, 12)
+            .padding(.bottom, 4)
+    }
+
+    private func register() async {
+        guard username.count >= 3 else { statusText = "用户名至少 3 个字符"; return }
+        guard password.count >= 8 else { statusText = "密码至少 8 位"; return }
+        guard !nickname.isEmpty else { statusText = "请填写姓名"; return }
+
+        isLoading = true
+        statusText = "注册中..."
+        defer { isLoading = false }
+        do {
+            let session = try await AuthAPI.register(
+                username: username, password: password, nickname: nickname, phone: phone
+            )
+            auth.saveSession(session)
+            dismiss()
+            onLoginSuccess()
+        } catch {
+            statusText = "注册失败：\(error.localizedDescription)"
+        }
+    }
+}
+
+// MARK: - SSO WebView
+
+import WebKit
+
+struct SSOWebView: View {
+    @ObservedObject var auth: AuthManager
+    @Environment(\.dismiss) private var dismiss
+    var onLoginSuccess: () -> Void
+
+    var body: some View {
+        VStack(spacing: 0) {
+            Button {
+                dismiss()
+            } label: {
+                Text("取消登录")
+                    .frame(maxWidth: .infinity)
+                    .frame(height: 44)
+                    .background(Theme.surface)
+                    .foregroundColor(.white)
+            }
+
+            SSOWebViewRepresentable()
+
+            Button {
+                readJwtAndLogin()
+            } label: {
+                Text("已登录，点击继续")
+                    .frame(maxWidth: .infinity)
+                    .frame(height: 48)
+                    .background(Theme.accent)
+                    .foregroundColor(.white)
+                    .clipShape(RoundedRectangle(cornerRadius: 8))
+            }
+            .padding(8)
+        }
+        .background(Theme.background.ignoresSafeArea())
+    }
+
+    private func readJwtAndLogin() {
+        // Read JWT from WKWebView's localStorage via JavaScript
+        SSOWebViewHolder.shared.readToken { jwt in
+            guard let jwt = jwt, !jwt.isEmpty, jwt != "null" else {
+                DispatchQueue.main.async {
+                    // Toast
+                }
+                return
+            }
+            Task {
+                await exchangeJwt(jwt)
+            }
+        }
+    }
+
+    private func exchangeJwt(_ jwt: String) async {
+        do {
+            let result = try await AuthAPI.ssoExchange(jwtToken: jwt)
+            await MainActor.run {
+                dismiss()
+                if !result.phoneBound {
+                    auth.ssoPendingToken = result.token
+                    auth.showingPhoneBinding = true
+                } else {
+                    auth.saveSession(AuthSession(token: result.token, user: result.user))
+                    onLoginSuccess()
+                }
+            }
+        } catch {
+            await MainActor.run {
+                dismiss()
+            }
+        }
+    }
+}
+
+// MARK: - SSO WebView Representable
+
+struct SSOWebViewRepresentable: UIViewRepresentable {
+    func makeUIView(context: Context) -> WKWebView {
+        let config = WKWebViewConfiguration()
+        config.websiteDataStore = .default()
+        let webView = WKWebView(frame: .zero, configuration: config)
+        webView.navigationDelegate = context.coordinator
+        SSOWebViewHolder.shared.webView = webView
+        if let url = URL(string: "https://d1kt.cn/login") {
+            webView.load(URLRequest(url: url))
+        }
+        return webView
+    }
+
+    func updateUIView(_ uiView: WKWebView, context: Context) {}
+
+    func makeCoordinator() -> Coordinator {
+        Coordinator()
+    }
+
+    class Coordinator: NSObject, WKNavigationDelegate {
+        func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
+            decisionHandler(.allow)
+        }
+    }
+}
+
+// MARK: - Holder for WebView reference
+
+final class SSOWebViewHolder {
+    static let shared = SSOWebViewHolder()
+    weak var webView: WKWebView?
+
+    func readToken(completion: @escaping (String?) -> Void) {
+        guard let webView = webView else {
+            completion(nil)
+            return
+        }
+        webView.evaluateJavaScript(
+            "(function(){ try { return localStorage.getItem('token') || sessionStorage.getItem('token') || ''; } catch(e) { return ''; } })()"
+        ) { result, _ in
+            let token = (result as? String) ?? ""
+            completion(token.isEmpty || token == "null" ? nil : token)
+        }
+    }
+}
+
+// MARK: - Phone Binding View
+
+struct PhoneBindingView: View {
+    @ObservedObject var auth: AuthManager
+    @Environment(\.dismiss) private var dismiss
+    @State private var phone = ""
+    @State private var statusText = ""
+    @State private var isLoading = false
+    var onLoginSuccess: () -> Void
+
+    var body: some View {
+        VStack(alignment: .leading, spacing: 0) {
+            Text("绑定手机号")
+                .font(.system(size: 28, weight: .bold))
+                .foregroundColor(.white)
+            Text("已通过第一课堂登录，请绑定手机号后继续")
+                .font(.system(size: 14))
+                .foregroundColor(Theme.textMuted)
+                .padding(.top, 6)
+                .padding(.bottom, 24)
+
+            fieldLabel("手机号")
+            TextField("请输入 11 位手机号", text: $phone)
+                .textFieldStyle(.plain)
+                .keyboardType(.phonePad)
+                .padding(12)
+                .background(Theme.surface)
+                .clipShape(RoundedRectangle(cornerRadius: 8))
+                .overlay(RoundedRectangle(cornerRadius: 8).stroke(Theme.border, lineWidth: 1))
+
+            Button {
+                Task { await bindPhone() }
+            } label: {
+                Text(isLoading ? "绑定中..." : "绑定并继续")
+                    .frame(maxWidth: .infinity)
+                    .frame(height: 48)
+                    .background(Theme.accent)
+                    .foregroundColor(.white)
+                    .clipShape(RoundedRectangle(cornerRadius: 8))
+            }
+            .padding(.top, 20)
+            .disabled(isLoading)
+
+            if !statusText.isEmpty {
+                Text(statusText)
+                    .font(.system(size: 13))
+                    .foregroundColor(Theme.accentLight)
+                    .padding(.top, 14)
+            }
+            Spacer()
+        }
+        .padding(.horizontal, 28)
+        .padding(.top, 60)
+        .background(Theme.background.ignoresSafeArea())
+    }
+
+    private func fieldLabel(_ text: String) -> some View {
+        Text(text)
+            .font(.system(size: 13))
+            .foregroundColor(Theme.textMuted)
+            .padding(.bottom, 4)
+    }
+
+    private func bindPhone() async {
+        let cleaned = phone.trimmingCharacters(in: .whitespaces)
+        guard cleaned.range(of: "^1[3-9]\\d{9}$", options: .regularExpression) != nil else {
+            statusText = "请输入有效的 11 位手机号"
+            return
+        }
+        guard let token = auth.ssoPendingToken else {
+            statusText = "登录状态已过期，请重新登录"
+            return
+        }
+        isLoading = true
+        statusText = "绑定中..."
+        defer { isLoading = false }
+        do {
+            try await AuthAPI.ssoBindPhone(token: token, phone: cleaned)
+            auth.showingPhoneBinding = false
+            auth.ssoPendingToken = nil
+            auth.saveSession(AuthSession(token: token, user: AuthUser(id: "", username: "", nickname: "")))
+            dismiss()
+            onLoginSuccess()
+        } catch {
+            statusText = "绑定失败：\(error.localizedDescription)"
+        }
+    }
+}

ios/OralTrainer/Views/RootView.swift

@@ -3,40 +3,77 @@ import UIKit
 import UniformTypeIdentifiers
 
 struct RootView: View {
+    @StateObject private var auth = AuthManager()
     @StateObject private var controller = PlayerController()
     @StateObject private var catalogVM = CatalogViewModel()
-    @State private var activeModule: Module = .train
+    @State private var activeModule: Module = .course
     @State private var continuousPlayback = false
     @State private var showImporter = false
     @State private var showFullscreenPlayer = false
+    @State private var courses: [Course] = []
+    @State private var currentCourse: Course?
+    @State private var courseStatusText = "正在同步"
+    @State private var showCourseGuardToast = false
 
     enum Module {
+        case course
         case train
         case test
+        case mine
     }
 
     var body: some View {
+        if auth.isLoggedIn {
+            mainContent
+        } else {
+            AuthView(auth: auth) {
+                Task { await loadCourses() }
+            }
+        }
+    }
+
+    private var mainContent: some View {
         ZStack {
             Theme.background.ignoresSafeArea()
             VStack(spacing: 0) {
                 header
                 moduleTabs
-                if activeModule == .train {
+                switch activeModule {
+                case .course:
+                    coursePage
+                case .train:
                     TrainingView(
                         controller: controller,
                         catalogVM: catalogVM,
                         continuousPlayback: $continuousPlayback,
                         onFullscreen: enterFullscreen
                     )
-                } else {
+                case .test:
                     TestView(controller: controller, onFullscreen: enterFullscreen)
+                case .mine:
+                    minePage
+                }
+            }
+
+            if showCourseGuardToast {
+                VStack {
+                    Spacer()
+                    Text("请先选择课程")
+                        .font(.system(size: 14))
+                        .foregroundColor(.white)
+                        .padding(.horizontal, 20)
+                        .padding(.vertical, 12)
+                        .background(Theme.overlay)
+                        .clipShape(RoundedRectangle(cornerRadius: 8))
+                    Spacer().frame(height: 80)
                 }
             }
         }
         .preferredColorScheme(.dark)
         .onAppear {
-            catalogVM.controller = controller
-            controller.setContinuousPlayback(continuousPlayback)
+            if auth.isLoggedIn && courses.isEmpty {
+                Task { await loadCourses() }
+            }
         }
         .onChange(of: activeModule) { module in
             if module == .train {
@@ -70,18 +107,24 @@ struct RootView: View {
                 Text("八哥口语")
                     .font(.system(size: 32, weight: .bold))
                     .foregroundColor(.white)
-                Text("外语跟读训练神器")
+                Text(auth.nickname.isEmpty ? "外语跟读训练神器" : "你好，\(auth.nickname)")
                     .font(.system(size: 15))
                     .foregroundColor(Theme.textMuted)
             }
             Spacer()
-            headerButton("导入") {
-                showImporter = true
+            if activeModule == .train {
+                headerButton("导入") {
+                    showImporter = true
+                }
             }
             headerButton("刷新") {
-                Task {
-                    await catalogVM.load()
-                }
+                Task { await loadCourses() }
+            }
+            headerButton("退出") {
+                auth.logout()
+                currentCourse = nil
+                courses = []
+                activeModule = .course
             }
         }
         .padding(.horizontal, 18)
@@ -105,30 +148,150 @@ struct RootView: View {
 
     private var moduleTabs: some View {
         HStack(spacing: 0) {
+            moduleTab("课程", module: .course)
             moduleTab("训练", module: .train)
             moduleTab("测试", module: .test)
+            moduleTab("我的", module: .mine)
         }
         .padding(.horizontal, 16)
         .padding(.bottom, 8)
     }
 
     private func moduleTab(_ label: String, module: Module) -> some View {
-        let selected = activeModule == module
-        return Button {
-            activeModule = module
+        Button {
+            if module != .course && currentCourse == nil {
+                showCourseGuardToast = true
+                DispatchQueue.main.asyncAfter(deadline: .now() + 2) {
+                    showCourseGuardToast = false
+                }
+            } else {
+                activeModule = module
+            }
         } label: {
             Text(label)
                 .font(.system(size: 15, weight: .bold))
-                .foregroundColor(selected ? .white : Theme.textMuted)
+                .foregroundColor(activeModule == module ? .white : Theme.textMuted)
                 .frame(maxWidth: .infinity)
                 .frame(height: 38)
-                .background(selected ? Theme.buttonBlue : Theme.surface)
+                .background(activeModule == module ? Theme.buttonBlue : Theme.surface)
                 .clipShape(RoundedRectangle(cornerRadius: 8))
         }
         .buttonStyle(.plain)
-        .padding(2)
     }
 
+    // MARK: - Course Page
+
+    private var coursePage: some View {
+        ScrollView {
+            VStack(alignment: .leading, spacing: 0) {
+                Text("课程首页")
+                    .font(.system(size: 26, weight: .bold))
+                    .foregroundColor(.white)
+                    .padding(.horizontal, 16)
+                Text("选择一门课程开始训练")
+                    .font(.system(size: 13))
+                    .foregroundColor(Theme.textMuted)
+                    .padding(.horizontal, 16)
+                    .padding(.top, 4)
+                Text(courseStatusText)
+                    .font(.system(size: 13))
+                    .foregroundColor(Theme.textMuted)
+                    .padding(.horizontal, 16)
+                    .padding(.top, 8)
+
+                if courses.isEmpty {
+                    Text("暂无课程")
+                        .font(.system(size: 14))
+                        .foregroundColor(Theme.textMuted)
+                        .padding(.horizontal, 16)
+                        .padding(.top, 20)
+                } else {
+                    LazyVStack(spacing: 10) {
+                        ForEach(courses) { course in
+                            courseCard(course)
+                        }
+                    }
+                    .padding(.horizontal, 16)
+                    .padding(.top, 8)
+                }
+            }
+            .padding(.top, 12)
+        }
+    }
+
+    private func courseCard(_ course: Course) -> some View {
+        let isSelected = currentCourse?.videoHash == course.videoHash
+        return Button {
+            selectCourse(course)
+        } label: {
+            VStack(alignment: .leading, spacing: 6) {
+                Text(course.title)
+                    .font(.system(size: 16, weight: .bold))
+                    .foregroundColor(isSelected ? Theme.textDark : .white)
+                    .lineLimit(2)
+                Text("\(course.enrolled ? "已选修" : "未选修") · \(course.sentenceCount) 句\(isSelected ? " · 当前课程" : "")")
+                    .font(.system(size: 13))
+                    .foregroundColor(isSelected ? Theme.accentDeep : Theme.textMuted)
+            }
+            .frame(maxWidth: .infinity, alignment: .leading)
+            .padding(14)
+            .background(isSelected ? Theme.selected : Theme.surface)
+            .overlay(
+                RoundedRectangle(cornerRadius: 10)
+                    .stroke(isSelected ? Theme.accent : Theme.border, lineWidth: 1)
+            )
+            .clipShape(RoundedRectangle(cornerRadius: 10))
+        }
+        .buttonStyle(.plain)
+    }
+
+    private func selectCourse(_ course: Course) {
+        currentCourse = course
+        let video = course.toVideoSummary()
+        catalogVM.select(video)
+        activeModule = .train
+    }
+
+    // MARK: - Mine Page
+
+    private var minePage: some View {
+        ScrollView {
+            VStack(alignment: .leading, spacing: 12) {
+                Text(auth.nickname.isEmpty ? "我的学习" : auth.nickname)
+                    .font(.system(size: 26, weight: .bold))
+                    .foregroundColor(.white)
+                    .padding(.horizontal, 16)
+                    .padding(.top, 12)
+
+                if let course = currentCourse {
+                    Text("当前课程：\(course.title)")
+                        .font(.system(size: 14, weight: .bold))
+                        .foregroundColor(.white)
+                        .padding(.horizontal, 16)
+                }
+
+                Text("此页面显示当前课程的测试记录和配音分享")
+                    .font(.system(size: 13))
+                    .foregroundColor(Theme.textMuted)
+                    .padding(.horizontal, 16)
+            }
+        }
+    }
+
+    // MARK: - Load Courses
+
+    private func loadCourses() async {
+        courseStatusText = "正在同步"
+        do {
+            courses = try await AuthAPI.courses(token: auth.token)
+            courseStatusText = "\(courses.count) 个课程"
+        } catch {
+            courseStatusText = "课程加载失败：\(error.localizedDescription)"
+        }
+    }
+
+    // MARK: - Fullscreen
+
     private func enterFullscreen() {
         AppDelegate.orientationLock = UIDevice.current.userInterfaceIdiom == .pad ? .all : .landscape
         updateSupportedInterfaceOrientations()