package com.quizgenerator.system;

import com.quizgenerator.entity.User;
import com.quizgenerator.service.QuestionService;
import com.quizgenerator.service.UserService;

/** 应用程序的主入口类，负责启动和协调整个问答流程. */
public class QuizApplication {
  private final LoginHandler loginHandler;
  private final MainMenuHandler mainMenuHandler;
  private final ConsoleUi consoleUi;

  /** 构造 QuizApplication 实例. 负责初始化所有必要的服务和处理器. */
  public QuizApplication() {
    // 1. 初始化
    UserService userService = new UserService();
    QuestionService questionService = new QuestionService();
    this.consoleUi = new ConsoleUi();

    // 2. 初始化处理器
    this.loginHandler = new LoginHandler(userService, consoleUi);
    this.mainMenuHandler = new MainMenuHandler(questionService, consoleUi);
  }

  /** 启动并运行应用程序的主循环. 这个方法会持续运行，处理用户登录和主菜单交互. */
  public void run() {
    consoleUi.displayWelcomeMessage();
    while (true) {
      // 3. 处理登录流程
      User currentUser = loginHandler.performLogin();

      // 4. 进入主菜单循环
      if (currentUser != null) {
        consoleUi.displayLoginSuccess(currentUser);
        mainMenuHandler.handleMainMenu(currentUser);
      }
    }
  }

  /**
   * 应用程序的入口点.
   *
   * @param args 命令行参数 (未使用).
   */
  public static void main(String[] args) {
    QuizApplication app = new QuizApplication();
    app.run();
  }
}