package mathlearning.ui;

import mathlearning.model.User;
import mathlearning.service.UserService;

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

public class ChangePasswordFrame extends JFrame {
    private User user;
    private UserService userService;
    private ProfileFrame profileFrame;
    private JPasswordField oldPasswordField;
    private JPasswordField newPasswordField;
    private JPasswordField confirmPasswordField;

    public ChangePasswordFrame(User user, UserService userService, ProfileFrame profileFrame) {
        this.user = user;
        this.userService = userService;
        this.profileFrame = profileFrame;
        addWindowListener(new java.awt.event.WindowAdapter() {
            @Override
            public void windowClosing(java.awt.event.WindowEvent windowEvent) {
                profileFrame.setVisible(true);
            }
        });
        InitUI();
    }

    private void InitUI() {
        setTitle("修改密码");
        setSize(400, 300);
        setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        setLocationRelativeTo(null);
        setResizable(false);

        // 创建主面板
        JPanel mainPanel = new JPanel(new BorderLayout(10, 10));
        mainPanel.setBorder(BorderFactory.createEmptyBorder(20, 20, 20, 20));

        // 标题
        JLabel titleLabel = new JLabel("修改密码", JLabel.CENTER);
        titleLabel.setFont(new Font("微软雅黑", Font.BOLD, 24));
        mainPanel.add(titleLabel, BorderLayout.NORTH);

        //表单
        JPanel infoPanel = new JPanel(new GridLayout(4, 2, 10, 10));
        JLabel oldPasswordLabel = new JLabel("请输入旧密码：");
        oldPasswordLabel.setFont(new Font("微软雅黑", Font.PLAIN, 14));
        oldPasswordField = new JPasswordField();
        infoPanel.add(oldPasswordLabel);
        infoPanel.add(oldPasswordField);
        JLabel newPasswordLabel = new JLabel("请输入新密码：");
        newPasswordLabel.setFont(new Font("微软雅黑", Font.PLAIN, 14));
        newPasswordField = new JPasswordField();
        infoPanel.add(newPasswordLabel);
        infoPanel.add(newPasswordField);
        JLabel confirmPasswordLabel = new JLabel("请再次输入新密码：");
        confirmPasswordLabel.setFont(new Font("微软雅黑", Font.PLAIN, 14));
        confirmPasswordField = new JPasswordField();
        infoPanel.add(confirmPasswordLabel);
        infoPanel.add(confirmPasswordField);
        mainPanel.add(infoPanel, BorderLayout.CENTER);

        //按钮
        JPanel buttonPanel = new JPanel(new FlowLayout());
        JButton changeButton = new JButton("修改");
        changeButton.addActionListener(new ChangeButtonListener());
        JButton cancelButton = new JButton("取消并返回");
        cancelButton.addActionListener(e -> returnToProfileFrame());

        buttonPanel.add(changeButton);
        buttonPanel.add(cancelButton);

        mainPanel.add(buttonPanel, BorderLayout.SOUTH);

        add(mainPanel);
    }

    private void returnToProfileFrame() {
        profileFrame.setVisible(true);
        dispose();
    }

    private class ChangeButtonListener implements ActionListener {
        @Override
        public void actionPerformed(ActionEvent e) {
            String oldPassword = new String(oldPasswordField.getPassword());
            String newPassword = new String(newPasswordField.getPassword());
            String confirmPassword = new String(confirmPasswordField.getPassword());

            if (!newPassword.equals(confirmPassword)) {
                JOptionPane.showMessageDialog(ChangePasswordFrame.this, "两次输入的密码不相同！", "错误", JOptionPane.ERROR_MESSAGE );
                return;
            }

            int changed = userService.changePassword(user.getEmail(), oldPassword, newPassword);

            if (changed == 1) {
                JOptionPane.showMessageDialog(ChangePasswordFrame.this, "修改失败！用户账户异常！", "错误", JOptionPane.ERROR_MESSAGE);
                return;
            }
            else if (changed == 2) {
                JOptionPane.showMessageDialog(ChangePasswordFrame.this, "修改失败！旧密码输入有误！", "错误", JOptionPane.ERROR_MESSAGE);
                return;
            } else if (changed == 3) {
                JOptionPane.showMessageDialog(ChangePasswordFrame.this, "修改失败！新密码的格式有误！密码必须为6-10位，且包含大小写字母和数字", "错误", JOptionPane.ERROR_MESSAGE);
                return;
            } else if (changed == 4) {
                JOptionPane.showMessageDialog(ChangePasswordFrame.this, "修改失败！旧密码与新密码一致！", "错误", JOptionPane.ERROR_MESSAGE);
                return;
            } else {
                JOptionPane.showMessageDialog(ChangePasswordFrame.this, "修改成功！", "成功", JOptionPane.INFORMATION_MESSAGE);
            }
            returnToProfileFrame();
        }
    }
}