student_studying/src/ui/RegisterPanel.java

package ui;

import controller.AppController;
import controller.UserManager;
import util.EmailUtil;

import javax.swing.*;
import java.awt.*;

/**
 * 注册界面
 */
public class RegisterPanel extends JPanel {
    private JTextField emailField;
    private JTextField codeField;
    private JPasswordField passwordField;
    private JPasswordField confirmField;
    private JTextField usernameField; // 新增用户名输入框

    private String sentCode = null;

    public RegisterPanel(AppController controller) {
        setLayout(new GridBagLayout());
        GridBagConstraints gbc = new GridBagConstraints();
        gbc.insets = new Insets(8, 8, 8, 8);
        gbc.fill = GridBagConstraints.HORIZONTAL;

        JLabel title = new JLabel("用户注册", JLabel.CENTER);
        title.setFont(new Font("微软雅黑", Font.BOLD, 22));
        gbc.gridx = 0; gbc.gridy = 0; gbc.gridwidth = 2;
        add(title, gbc);

        gbc.gridwidth = 1;
        gbc.gridx = 0; gbc.gridy = 1;
        add(new JLabel("邮箱："), gbc);

        gbc.gridx = 1;
        emailField = new JTextField(20);
        add(emailField, gbc);

        gbc.gridx = 0; gbc.gridy = 2;
        add(new JLabel("用户名："), gbc); // 修改标签
        gbc.gridx = 1;
        usernameField = new JTextField(20); // 新增用户名输入框
        add(usernameField, gbc);

        gbc.gridx = 0; gbc.gridy = 3;
        add(new JLabel("验证码："), gbc);

        gbc.gridx = 1;
        codeField = new JTextField(10);
        add(codeField, gbc);

        gbc.gridx = 0; gbc.gridy = 4;
        add(new JLabel("密码："), gbc);

        gbc.gridx = 1;
        passwordField = new JPasswordField(20);
        add(passwordField, gbc);

        gbc.gridx = 0; gbc.gridy = 5;
        add(new JLabel("确认密码："), gbc);

        gbc.gridx = 1;
        confirmField = new JPasswordField(20);
        add(confirmField, gbc);

        JButton sendCodeButton = new JButton("发送验证码");
        gbc.gridx = 0; gbc.gridy = 6;
        add(sendCodeButton, gbc);

        JButton registerButton = new JButton("注册");
        gbc.gridx = 1;
        add(registerButton, gbc);

        JButton backButton = new JButton("返回登录");
        gbc.gridx = 0; gbc.gridy = 7; gbc.gridwidth = 2;
        add(backButton, gbc);

        sendCodeButton.addActionListener(e -> {
            String email = emailField.getText().trim();
            if (!email.matches("^[A-Za-z0-9+_.-]+@(.+)$")) {
                JOptionPane.showMessageDialog(this, "邮箱格式不正确！");
                return;
            }
            sentCode = EmailUtil.sendVerificationCode(email);
            JOptionPane.showMessageDialog(this, "验证码已发送（调试模式控制台查看）！");
        });

        registerButton.addActionListener(e -> {
            String email = emailField.getText().trim();
            String code = codeField.getText().trim();
            String password = new String(passwordField.getPassword());
            String confirm = new String(confirmField.getPassword());
            String username = usernameField.getText().trim(); // 获取用户名

            if (sentCode == null) {
                JOptionPane.showMessageDialog(this, "请先获取验证码！");
                return;
            }
            if (!code.equals(sentCode)) {
                JOptionPane.showMessageDialog(this, "验证码错误！");
                return;
            }
            if (!password.equals(confirm)) {
                JOptionPane.showMessageDialog(this, "两次密码不一致！");
                return;
            }
            if (!password.matches("(?=.*[a-z])(?=.*[A-Z])(?=.*\\d)[A-Za-z\\d]{6,10}")) {
                JOptionPane.showMessageDialog(this, "密码需包含大小写字母与数字，长度6-10位！");
                return;
            }
            //防止用户名重复
            if (controller.getUserManager().isUsernameExists(username)) {
                JOptionPane.showMessageDialog(this, "用户名已存在，请更换！");
                return;
            }
            if (username.isEmpty() || password.isEmpty() || email.isEmpty() || code.isEmpty()) {
                JOptionPane.showMessageDialog(this, "请填写完整信息！");
                return;
            }
            controller.handleRegister(email, password, username); // 传递username
        });

        backButton.addActionListener(e -> controller.showLoginPanel());
    }
}