package view.gui;

import ctrl.LoginCtrl;
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

/**
 * @author Nisiyu
 * @version 1.0
 * @created 21-11月-2025 8:14:26
 * 学号：2023210480 姓名：你的姓名
 */
public class LoginGui extends JFrame {

    private JTextField cid;
    private JPasswordField cpwd;
    private LoginCtrl loginCtrl;
    private JButton submitBtn;
    public LoginCtrl m_LoginCtrl;
    private JLabel resultLabel;

    public LoginGui() {
        this.loginCtrl = new LoginCtrl();
        initComponents();
        setupLayout();
        setupListeners();
    }

    public void finalize() throws Throwable {
        // 清理资源
    }

    /**
     * 初始化界面组件
     */
    public void initComponents() {
        // 设置窗口属性
        setTitle("ATM登录系统 - 学号：2023210480");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(400, 300);
        setLocationRelativeTo(null); // 居中显示
        
        // 初始化组件
        cid = new JTextField(15);
        cpwd = new JPasswordField(15);
        submitBtn = new JButton("登录");
        resultLabel = new JLabel("请输入账号和密码");
        
        // 设置密码字段的回显字符
        cpwd.setEchoChar('*');
    }

    /**
     * 设置界面布局
     */
    private void setupLayout() {
        setLayout(new GridBagLayout());
        GridBagConstraints gbc = new GridBagConstraints();
        gbc.insets = new Insets(5, 5, 5, 5);
        gbc.fill = GridBagConstraints.HORIZONTAL;
        
        // 账号标签和输入框
        gbc.gridx = 0;
        gbc.gridy = 0;
        add(new JLabel("账号:"), gbc);
        
        gbc.gridx = 1;
        gbc.gridy = 0;
        add(cid, gbc);
        
        // 密码标签和输入框
        gbc.gridx = 0;
        gbc.gridy = 1;
        add(new JLabel("密码:"), gbc);
        
        gbc.gridx = 1;
        gbc.gridy = 1;
        add(cpwd, gbc);
        
        // 登录按钮
        gbc.gridx = 0;
        gbc.gridy = 2;
        gbc.gridwidth = 2;
        gbc.fill = GridBagConstraints.NONE;
        add(submitBtn, gbc);
        
        // 结果显示标签
        gbc.gridx = 0;
        gbc.gridy = 3;
        gbc.gridwidth = 2;
        add(resultLabel, gbc);
    }

    /**
     * 设置事件监听器
     */
    private void setupListeners() {
        submitBtn.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                handleLogin();
            }
        });
        
        // 回车键登录
        cpwd.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                handleLogin();
            }
        });
    }

    /**
     * 处理登录事件
     */
    private void handleLogin() {
        String account = cid.getText().trim();
        String password = new String(cpwd.getPassword()).trim();
        
        if (account.isEmpty() || password.isEmpty()) {
            resultLabel.setText("账号和密码不能为空！");
            resultLabel.setForeground(Color.RED);
            return;
        }
        
        // 调用控制器进行登录验证
        boolean loginSuccess = loginCtrl.validateLogin(account, password);
        
        if (loginSuccess) {
            resultLabel.setText("登录成功！欢迎使用ATM系统");
            resultLabel.setForeground(Color.GREEN);
            // 这里可以跳转到主界面
        } else {
            resultLabel.setText("登录失败！请检查账号和密码");
            resultLabel.setForeground(Color.RED);
        }
        
        // 清空密码框
        cpwd.setText("");
    }

    /**
     * 显示登录界面
     */
    public void showGui() {
        setVisible(true);
    }

    /**
     * 主方法，用于测试
     */
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                new LoginGui().showGui();
            }
        });
    }
}//end LoginGui