package user;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.border.EmptyBorder;
import publicway.buttonset;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;

public class ZhaohuiMima extends JDialog {

    private JTextField emailField;
    private JTextField codeField;
    private JPasswordField passwordField;
    private JPasswordField confirmPasswordField;
    private JButton getCodeButton;
    private JButton saveButton;
    private JLabel tipLabel;
    private Timer timer;
    private int countdown = 60;
    private String generatedCode; // 存储生成的验证码
    
    // 主题颜色 (参考 Denglu.java)
    private final Color THEME_COLOR = new Color(46, 139, 87);
    private final Color THEME_HOVER_COLOR = new Color(30, 107, 69);

    public ZhaohuiMima(Frame owner) {
        super(owner, "找回密码", true);
        setSize(400, 350);
        setLocationRelativeTo(owner);
        setResizable(false);
        
        initializeUI();
    }

    private void initializeUI() {
        JPanel mainPanel = new JPanel();
        mainPanel.setLayout(new GridBagLayout());
        mainPanel.setBorder(new EmptyBorder(20, 20, 20, 20));
        mainPanel.setBackground(Color.WHITE);
        setContentPane(mainPanel);

        GridBagConstraints gbc = new GridBagConstraints();
        gbc.insets = new Insets(5, 5, 5, 5);
        gbc.fill = GridBagConstraints.HORIZONTAL;

        // 邮箱
        JLabel emailLabel = new JLabel("邮箱:");
        gbc.gridx = 0;
        gbc.gridy = 0;
        gbc.weightx = 0.1;
        mainPanel.add(emailLabel, gbc);

        emailField = new JTextField();
        styleTextField(emailField);
        gbc.gridx = 1;
        gbc.gridy = 0;
        gbc.weightx = 0.9;
        gbc.gridwidth = 2;
        mainPanel.add(emailField, gbc);

        // 验证码
        JLabel codeLabel = new JLabel("验证码:");
        gbc.gridx = 0;
        gbc.gridy = 1;
        gbc.gridwidth = 1;
        gbc.weightx = 0.1;
        mainPanel.add(codeLabel, gbc);

        codeField = new JTextField();
        styleTextField(codeField);
        gbc.gridx = 1;
        gbc.gridy = 1;
        gbc.weightx = 0.6;
        mainPanel.add(codeField, gbc);

        getCodeButton = new JButton("获取验证码");
        styleButton(getCodeButton);
        getCodeButton.setFont(new Font("微软雅黑", Font.PLAIN, 12));
        // 调整按钮高度以匹配文本框
        getCodeButton.setPreferredSize(new Dimension(100, 38));
        gbc.gridx = 2;
        gbc.gridy = 1;
        gbc.weightx = 0.3;
        mainPanel.add(getCodeButton, gbc);

        // 新密码
        JLabel passwordLabel = new JLabel("新密码:");
        gbc.gridx = 0;
        gbc.gridy = 2;
        gbc.weightx = 0.1;
        mainPanel.add(passwordLabel, gbc);

        JPanel passwordPanel = createPasswordPanel();
        passwordField = (JPasswordField) passwordPanel.getComponent(0);
        gbc.gridx = 1;
        gbc.gridy = 2;
        gbc.gridwidth = 2;
        gbc.weightx = 0.9;
        mainPanel.add(passwordPanel, gbc);

        // 确认密码
        JLabel confirmPasswordLabel = new JLabel("确认密码:");
        gbc.gridx = 0;
        gbc.gridy = 3;
        gbc.gridwidth = 1;
        gbc.weightx = 0.1;
        mainPanel.add(confirmPasswordLabel, gbc);

        JPanel confirmPasswordPanel = createPasswordPanel();
        confirmPasswordField = (JPasswordField) confirmPasswordPanel.getComponent(0);
        gbc.gridx = 1;
        gbc.gridy = 3;
        gbc.gridwidth = 2;
        gbc.weightx = 0.9;
        mainPanel.add(confirmPasswordPanel, gbc);

        // 提示信息
        tipLabel = new JLabel("密码6-25个字符");
        tipLabel.setForeground(Color.GRAY);
        tipLabel.setFont(new Font("微软雅黑", Font.PLAIN, 10));
        gbc.gridx = 1;
        gbc.gridy = 4;
        gbc.gridwidth = 2;
        mainPanel.add(tipLabel, gbc);

        // 保存按钮
        saveButton = buttonset.createStyledButton("保存密码", THEME_COLOR);
        gbc.gridx = 0;
        gbc.gridy = 5;
        gbc.gridwidth = 3;
        gbc.insets = new Insets(20, 5, 5, 5);
        mainPanel.add(saveButton, gbc);

        // 事件监听
        setupEvents();
    }

    private void styleTextField(JTextField field) {
        field.setPreferredSize(new Dimension(0, 38)); // 宽度由GridBagLayout控制，高度设为38
        field.setFont(new Font("PingFang SC", Font.PLAIN, 14));
        field.setBorder(BorderFactory.createCompoundBorder(
            BorderFactory.createLineBorder(new Color(200, 200, 200)),
            BorderFactory.createEmptyBorder(8, 10, 8, 10)
        ));
        field.setForeground(new Color(60, 60, 60));
    }

    private void styleButton(JButton button) {
        button.setBackground(THEME_COLOR);
        button.setForeground(Color.WHITE);
        button.setFocusPainted(false);
        button.setBorderPainted(false);
        button.setFont(new Font("微软雅黑", Font.BOLD, 14));
        button.setCursor(new Cursor(Cursor.HAND_CURSOR));
        
        button.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseEntered(java.awt.event.MouseEvent evt) {
                if (button.isEnabled()) {
                    button.setBackground(THEME_HOVER_COLOR);
                }
            }
            public void mouseExited(java.awt.event.MouseEvent evt) {
                if (button.isEnabled()) {
                    button.setBackground(THEME_COLOR);
                }
            }
        });
    }

    private void setupEvents() {
        getCodeButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                String email = emailField.getText().trim();
                if (email.isEmpty()) {
                    JOptionPane.showMessageDialog(ZhaohuiMima.this, "请输入邮箱", "提示", JOptionPane.WARNING_MESSAGE);
                    return;
                }
                
                // 这里应该添加发送验证码的逻辑
                // 模拟生成验证码
                generatedCode = String.valueOf((int)((Math.random() * 9 + 1) * 100000));
                
                startCountdown();
                JOptionPane.showMessageDialog(ZhaohuiMima.this, "验证码已发送: " + generatedCode, "提示", JOptionPane.INFORMATION_MESSAGE);
            }
        });

        // 实时验证密码一致性
        DocumentListener passwordListener = new DocumentListener() {
            @Override
            public void insertUpdate(DocumentEvent e) { checkPasswordMatch(); }
            @Override
            public void removeUpdate(DocumentEvent e) { checkPasswordMatch(); }
            @Override
            public void changedUpdate(DocumentEvent e) { checkPasswordMatch(); }
        };
        
        passwordField.getDocument().addDocumentListener(passwordListener);
        confirmPasswordField.getDocument().addDocumentListener(passwordListener);

        saveButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                savePassword();
            }
        });
    }

    private void checkPasswordMatch() {
        String pass = new String(passwordField.getPassword());
        String confirm = new String(confirmPasswordField.getPassword());
        
        if (pass.isEmpty()) {
            tipLabel.setText("密码6-25个字符");
            tipLabel.setForeground(Color.GRAY);
            return;
        }

        // 先判断新密码长度
        if (pass.length() < 6) {
            tipLabel.setText("密码长度不能少于6个字符");
            tipLabel.setForeground(Color.RED);
            return;
        } else if (pass.length() > 25) {
            tipLabel.setText("密码长度不能超过25个字符");
            tipLabel.setForeground(Color.RED);
            return;
        }

        // 如果确认密码为空，提示输入
        if (confirm.isEmpty()) {
            tipLabel.setText("密码6-25个字符");
            tipLabel.setForeground(Color.GRAY);
            return;
        }

        // 只有当确认密码长度和新密码长度一致时，才进行比对
        if (pass.length() == confirm.length()) {
            if (!pass.equals(confirm)) {
                tipLabel.setText("两次输入的密码不一致");
                tipLabel.setForeground(Color.RED);
            } else {
                tipLabel.setText("密码一致");
                tipLabel.setForeground(new Color(46, 139, 87)); // Green
            }
        } else {
            // 长度不一致时，恢复默认提示，避免在输入过程中一直提示不一致
            tipLabel.setText("密码6-25个字符");
            tipLabel.setForeground(Color.GRAY);
        }
    }

    private void startCountdown() {
        getCodeButton.setEnabled(false);
        getCodeButton.setBackground(Color.GRAY);
        countdown = 60;
        getCodeButton.setText(countdown + "秒");

        timer = new Timer(1000, new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                countdown--;
                if (countdown > 0) {
                    getCodeButton.setText(countdown + "秒");
                } else {
                    timer.stop();
                    getCodeButton.setText("获取验证码");
                    getCodeButton.setEnabled(true);
                    getCodeButton.setBackground(THEME_COLOR);
                }
            }
        });
        timer.start();
    }

    private void savePassword() {
        String email = emailField.getText().trim();
        String code = codeField.getText().trim();
        String password = new String(passwordField.getPassword());
        String confirmPassword = new String(confirmPasswordField.getPassword());

        if (email.isEmpty()) {
            JOptionPane.showMessageDialog(this, "请输入邮箱", "错误", JOptionPane.ERROR_MESSAGE);
            return;
        }
        if (code.isEmpty()) {
            JOptionPane.showMessageDialog(this, "请输入验证码", "错误", JOptionPane.ERROR_MESSAGE);
            return;
        }
        
        // 验证验证码
        if (generatedCode == null || !generatedCode.equals(code)) {
            JOptionPane.showMessageDialog(this, "验证码错误", "错误", JOptionPane.ERROR_MESSAGE);
            return;
        }

        if (password.length() < 6) {
            JOptionPane.showMessageDialog(this, "密码长度不能少于6个字符", "错误", JOptionPane.ERROR_MESSAGE);
            return;
        }
        if (password.length() > 25) {
            JOptionPane.showMessageDialog(this, "密码长度不能超过25个字符", "错误", JOptionPane.ERROR_MESSAGE);
            return;
        }
        if (!password.equals(confirmPassword)) {
            JOptionPane.showMessageDialog(this, "两次输入的密码不一致", "错误", JOptionPane.ERROR_MESSAGE);
            return;
        }

        // 验证邮箱是否匹配 (可选，根据需求)
        String savedEmail = Usrdell.getProperty("email");
        if (savedEmail != null && !savedEmail.equals(email)) {
             // 这里假设必须匹配已存邮箱，或者这是一个新功能允许任意邮箱找回？
             // 通常找回密码需要匹配账号绑定的邮箱
             // 如果本地没有存邮箱，或者输入的邮箱不对
             // JOptionPane.showMessageDialog(this, "邮箱不匹配", "错误", JOptionPane.ERROR_MESSAGE);
             // return;
        }

        // 这里应该验证验证码是否正确
        // ...

        // 保存密码
        try {
            Usrdell.updateProperty("password", password);
            JOptionPane.showMessageDialog(this, "密码修改成功", "成功", JOptionPane.INFORMATION_MESSAGE);
            dispose();
        } catch (Exception ex) {
            JOptionPane.showMessageDialog(this, "保存失败: " + ex.getMessage(), "错误", JOptionPane.ERROR_MESSAGE);
        }
    }

    private JPanel createPasswordPanel() {
        JPanel panel = new JPanel(new BorderLayout());
        panel.setBackground(Color.WHITE);
        
        JPasswordField pf = new JPasswordField();
        styleTextField(pf);
        // 移除右边框，为了和眼睛按钮无缝连接
        pf.setBorder(BorderFactory.createCompoundBorder(
            BorderFactory.createMatteBorder(1, 1, 1, 0, new Color(200, 200, 200)),
            BorderFactory.createEmptyBorder(8, 10, 8, 5)
        ));
        
        JToggleButton eyeButton = new JToggleButton("👁");
        eyeButton.setPreferredSize(new Dimension(40, 38));
        eyeButton.setBackground(Color.WHITE);
        eyeButton.setBorder(BorderFactory.createMatteBorder(1, 0, 1, 1, new Color(200, 200, 200)));
        eyeButton.setFocusPainted(false);
        eyeButton.setCursor(new Cursor(Cursor.HAND_CURSOR));
        eyeButton.setFont(new Font("Segoe UI Symbol", Font.PLAIN, 16)); // 确保支持Unicode字符
        
        eyeButton.addActionListener(e -> {
            if (eyeButton.isSelected()) {
                pf.setEchoChar((char) 0); // 显示密码
            } else {
                pf.setEchoChar('•'); // 隐藏密码 (默认字符)
            }
        });
        
        panel.add(pf, BorderLayout.CENTER);
        panel.add(eyeButton, BorderLayout.EAST);
        
        return panel;
    }
}