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@ -1,10 +1,9 @@
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package com.mathgenerator.ui;
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import com.mathgenerator.auth.Authenticator;
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import com.mathgenerator.auth.User;
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import com.mathgenerator.model.User;
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import com.mathgenerator.model.Level;
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import com.mathgenerator.service.PaperService;
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import com.mathgenerator.service.UserService;
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import java.util.Optional;
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import java.util.Scanner;
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@ -13,12 +12,19 @@ import java.util.Scanner;
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*/
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public class ConsoleUI {
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private final Scanner scanner = new Scanner(System.in);
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private final Authenticator authenticator;
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private final UserService userService;
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private final PaperService paperService;
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// 通过构造函数接收依赖的服务，这是一种常见的设计模式（依赖注入）
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public ConsoleUI(Authenticator authenticator, PaperService paperService) {
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this.authenticator = authenticator;
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/**
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* ConsoleUI的构造函数。
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* 通过构造函数接收依赖的服务，这是一种常见的设计模式（依赖注入），
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* 使得UI层不负责创建服务，只负责使用。
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*
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* @param userService 用户服务实例。
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* @param paperService 试卷服务实例。
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*/
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public ConsoleUI(UserService userService, PaperService paperService) {
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this.userService = userService;
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this.paperService = paperService;
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}
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@ -26,36 +32,107 @@ public class ConsoleUI {
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* 启动并运行整个用户界面主循环。
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*/
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public void run() {
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//TODO：警告:(29, 9) 'while' 语句不能在未抛出异常的情况下完成
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while (true) {
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Optional<User> userOptional = handleLogin();
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userOptional.ifPresent(this::showUserMenu);
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// 在主循环中加入注册选项
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printHeader("欢迎使用中小学数学卷子自动生成程序");
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System.out.println("1. 用户登录");
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System.out.println("2. 新用户注册");
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System.out.println("3. 退出程序");
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printSeparator();
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System.out.print("请选择操作 (1-3): ");
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String choice = scanner.nextLine().trim();
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switch (choice) {
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case "1" -> handleLogin().ifPresent(this::showUserMenu);
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case "2" -> handleRegistration();
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case "3" -> {
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System.out.println("感谢使用，程序已退出。");
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return; // 退出run()方法，结束程序
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}
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default -> System.out.println("无效输入，请输入 1-3 之间的数字。");
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}
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}
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}
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/**
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* 私有辅助方法，处理用户登录流程。
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*
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* @return 登录成功的用户Optional，如果登录失败或格式错误则返回空Optional。
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*/
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private Optional<User> handleLogin() {
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printHeader("用户登录"); // 统一标题格式
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System.out.print("请输入用户名和密码 (用空格隔开): (输入 exit 退出程序)\n> ");
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String line = scanner.nextLine();
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if ("exit".equalsIgnoreCase(line.trim())) {
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System.out.println("感谢使用，程序已退出。");
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System.exit(0);
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}
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printHeader("用户登录");
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System.out.print("请输入用户名和密码 (用空格隔开): \n> ");
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String[] credentials = scanner.nextLine().split("\\s+");
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String[] credentials = line.split("\\s+");
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if (credentials.length != 2) {
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System.out.println("输入格式错误，请重新输入。");
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System.out.println("输入格式错误。");
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return Optional.empty();
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}
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Optional<User> userOptional = authenticator.login(credentials[0], credentials[1]);
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// 调用新的UserService进行登录
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Optional<User> userOptional = userService.login(credentials[0], credentials[1]);
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if (userOptional.isEmpty()) {
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System.out.println("用户名或密码错误，请重新输入。");
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System.out.println("用户名或密码错误。");
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}
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return userOptional;
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}
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/**
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* 新增方法：处理用户注册流程。
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*/
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private void handleRegistration() {
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printHeader("新用户注册");
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System.out.print("请输入新用户名: ");
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String username = scanner.nextLine().trim();
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if (userService.findUserByUsername(username).isPresent()) {
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System.out.println("注册失败：该用户名已被占用。");
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return;
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}
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System.out.print("请输入密码: ");
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String password = scanner.nextLine().trim();
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Level level = selectLevelForRegistration();
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if (level == null) {
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System.out.println("操作已取消。");
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return;
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}
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if (userService.register(username, password, level)) {
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System.out.println("注册成功！现在您可以使用新账户登录了。");
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} else {
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// 理论上，这里的失败分支不会被触发，因为我们已经提前检查了用户名
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System.out.println("注册失败，发生未知错误。");
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}
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}
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/**
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* 新增辅助方法：让用户在注册时选择学段。
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*/
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private Level selectLevelForRegistration() {
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while (true) {
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printHeader("请为新用户选择默认的学段");
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System.out.println("1. 小学");
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System.out.println("2. 初中");
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System.out.println("3. 高中");
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System.out.println("0. 取消注册");
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printSeparator();
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System.out.print("请选择 (0-3): ");
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String choice = scanner.nextLine().trim();
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switch (choice) {
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case "1": return Level.PRIMARY;
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case "2": return Level.JUNIOR_HIGH;
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case "3": return Level.SENIOR_HIGH;
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case "0": return null; // 用户取消
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default: System.out.println("无效输入，请重新选择。");
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}
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}
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}
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/**
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* 私有辅助方法，显示登录后的用户主菜单和处理用户操作。
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*
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* @param user 当前已登录的用户对象。
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*/
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private void showUserMenu(User user) {
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Level currentLevel = user.level();
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System.out.println("\n登录成功! 欢迎 " + user.username());
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@ -88,7 +165,10 @@ public class ConsoleUI {
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}
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/**
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* 处理切换难度的子菜单，加入循环以处理无效输入。
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* 私有辅助方法，处理切换难度的子菜单，加入循环以处理无效输入。
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*
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* @param currentLevel 当前的难度级别。
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* @return 用户选择的新的难度级别，如果选择返回则为原级别。
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*/
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private Level handleLevelSwitchMenu(Level currentLevel) {
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while (true) { // <-- 增加循环
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@ -100,7 +180,6 @@ public class ConsoleUI {
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printSeparator();
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System.out.print("请选择 (0-3): ");
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String choice = scanner.nextLine().trim();
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switch (choice) {
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case "1":
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System.out.println("难度已成功切换为 " + Level.PRIMARY.getChineseName() + "。");
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@ -115,37 +194,51 @@ public class ConsoleUI {
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System.out.println("已返回主菜单。");
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return currentLevel; // 返回当前难度，退出循环
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default:
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// 如果输入无效，打印提示信息，循环将继续，要求用户重新输入
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System.out.println("无效输入，请输入 0-3 之间的数字。");
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}
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}
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}
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/**
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* 私有辅助方法，处理生成题目的逻辑。
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*
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* @param user 当前登录的用户。
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* @param currentLevel 当前选择的难度级别。
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*/
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private void handleGeneration(User user, Level currentLevel) {
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printHeader("生成 " + currentLevel.getChineseName() + " 题目");
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System.out.print("请输入生成题目数量 (10-30，输入 0 返回主菜单): ");
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try {
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int count = Integer.parseInt(scanner.nextLine().trim());
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if (count == 0) {
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System.out.println("已取消生成，返回主菜单。");
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return;
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}
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if (count >= 10 && count <= 30) {
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paperService.createAndSavePaper(user, count, currentLevel);
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} else {
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System.out.println("输入无效，题目数量必须在 10 到 30 之间。");
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while (true) {
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printHeader("生成 " + currentLevel.getChineseName() + " 题目");
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System.out.print("请输入生成题目数量 (10-30，输入 0 返回主菜单): ");
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String input = scanner.nextLine().trim();
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try {
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int count = Integer.parseInt(input);
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if (count == 0) {
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System.out.println("已取消生成，返回主菜单。");
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break; // 退出循环，返回主菜单
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}
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if (count >= 10 && count <= 30) {
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paperService.createAndSavePaper(user, count, currentLevel);
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break; // 成功生成，退出循环，返回主菜单
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} else {
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System.out.println("无效输入，题目数量必须在 10 到 30 之间。请重新输入。");
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}
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} catch (NumberFormatException e) {
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System.out.println("无效输入，请输入一个有效的数字。请重新输入。");
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}
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} catch (NumberFormatException e) {
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System.out.println("输入无效，请输入一个有效的数字。");
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}
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}
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/**
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* 私有辅助方法，打印美化后的标题行。
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*
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* @param title 要显示的标题文本。
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*/
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private void printHeader(String title) {
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printSeparator();
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System.out.println(title);
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printSeparator();
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}
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/**
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* 私有辅助方法，打印分割线。
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*/
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private void printSeparator() {
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System.out.println("======================================================");
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}
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