import 'package:flutter/material.dart';
import 'package:qhd_prevention/customWidget/custom_button.dart';
import 'package:qhd_prevention/pages/my_appbar.dart';

import 'package:flutter/material.dart';

class MineSetPwdPage extends StatefulWidget {
  const MineSetPwdPage({super.key});

  @override
  State<MineSetPwdPage> createState() => _MineSetPwdPageState();
}

class _MineSetPwdPageState extends State<MineSetPwdPage> {
  final _oldPwdController = TextEditingController();
  final _newPwdController = TextEditingController();
  final _confirmPwdController = TextEditingController();

  @override
  void dispose() {
    _oldPwdController.dispose();
    _newPwdController.dispose();
    _confirmPwdController.dispose();
    super.dispose();
  }

  void _handleSubmit() {
    final oldPwd = _oldPwdController.text.trim();
    final newPwd = _newPwdController.text.trim();
    final confirmPwd = _confirmPwdController.text.trim();

    if (oldPwd.isEmpty || newPwd.isEmpty || confirmPwd.isEmpty) {
      _showMessage('请填写完整所有字段');
      return;
    }

    if (newPwd != confirmPwd) {
      _showMessage('新密码与确认密码不一致');
      return;
    }

    // 示例验证：密码复杂度（实际可用正则加强）
    if (newPwd.length < 8 || newPwd.length > 20) {
      _showMessage('密码长度需在8-20位之间');
      return;
    }

    _showMessage('密码修改成功'); // 这里换成实际调用接口逻辑
  }

  void _showMessage(String msg) {
    ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text(msg)));
  }

  Widget _buildPwdField(String hintText, TextEditingController controller) {
    return Column(
      children: [
        TextField(
          controller: controller,
          obscureText: true,
          decoration: InputDecoration(
            hintText: hintText,
            border: InputBorder.none,
            contentPadding: const EdgeInsets.symmetric(vertical: 10),
          ),
        ),
        const Divider(height: 1, color: Colors.grey),
      ],
    );
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: MyAppbar(title: '修改密码'),
      body: SafeArea(
        child: Padding(
          padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 20),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              const Text(
                '修改密码',
                style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold),
              ),
              const SizedBox(height: 30),
              _buildPwdField('旧密码', _oldPwdController),
              const SizedBox(height: 20),
              _buildPwdField('新密码', _newPwdController),
              const SizedBox(height: 20),
              _buildPwdField('确认新密码', _confirmPwdController),
              const SizedBox(height: 15),
              const Text(
                '需8-20位字母大小写、数字、字符混合',
                style: TextStyle(color: Colors.grey, fontSize: 13),
              ),
              const SizedBox(height: 30,),
              SizedBox(
                width: double.infinity,
                height: 48,
                child: CustomButton(text: "提交", backgroundColor: Colors.blue),
              ),
            ],
          ),
        ),
      ),
    );
  }
}