import 'package:flutter/material.dart';
import 'package:file_picker/file_picker.dart';
import 'package:process_run/shell.dart';
import 'dart:io';

void main() {
  runApp(NaiveProxyApp());
}

class NaiveProxyApp extends StatelessWidget {
  const NaiveProxyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'NaiveProxy启动器',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: NaiveProxyHomePage(),
    );
  }
}

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

  @override
  _NaiveProxyHomePageState createState() => _NaiveProxyHomePageState();
}

class _NaiveProxyHomePageState extends State<NaiveProxyHomePage> {
  String? _configFilePath;
  String _status = '未选择配置文件';

  Future<void> _pickConfigFile() async {
    FilePickerResult? result = await FilePicker.platform.pickFiles(
      type: FileType.custom,
      allowedExtensions: ['json'],
    );

    if (result != null) {
      setState(() {
        _configFilePath = result.files.single.path;
        _status = '已选择文件: ${_configFilePath!.split('/').last}';
      });
    }
  }

  Future<void> _launchNaiveProxy() async {
    if (_configFilePath == null) {
      _showErrorDialog('请先导入配置文件');
      return;
    }

    try {
      // 检查naiveproxy是否已安装
      var shell = Shell();
      var whichResult = await shell.run('which naive');

      if (whichResult.isEmpty) {
        _showErrorDialog('NaiveProxy未安装');
        return;
      }

      // 尝试执行naive
      var result = await shell.run('naive $_configFilePath');

      // 显示执行结果
      _showResultDialog('NaiveProxy已启动', result.outText);

    } catch (e) {
      _showErrorDialog('启动失败：${e.toString()}');
    }
  }

  void _showErrorDialog(String message) {
    showDialog(
      context: context,
      builder: (BuildContext context) {
        return AlertDialog(
          title: Text('错误'),
          content: Text(message),
          actions: <Widget>[
            TextButton(
              child: Text('确定'),
              onPressed: () {
                Navigator.of(context).pop();
              },
            ),
          ],
        );
      },
    );
  }

  void _showResultDialog(String title, String message) {
    showDialog(
      context: context,
      builder: (BuildContext context) {
        return AlertDialog(
          title: Text(title),
          content: SingleChildScrollView(
            child: Text(message),
          ),
          actions: <Widget>[
            TextButton(
              child: Text('确定'),
              onPressed: () {
                Navigator.of(context).pop();
              },
            ),
          ],
        );
      },
    );
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('NaiveProxy启动器'),
        centerTitle: true,
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            SizedBox(
              width: 300,
              child: Text(
                _status,
                style: TextStyle(fontSize: 16),
                textAlign: TextAlign.center,
              ),
            ),
            SizedBox(height: 20),
            ElevatedButton.icon(
              icon: Icon(Icons.file_upload),
              label: Text('导入配置文件'),
              onPressed: _pickConfigFile,
              style: ElevatedButton.styleFrom(
                padding: EdgeInsets.symmetric(horizontal: 20, vertical: 12),
              ),
            ),
            SizedBox(height: 20),
            ElevatedButton.icon(
              icon: Icon(Icons.rocket_launch),
              label: Text('启动NaiveProxy'),
              onPressed: _launchNaiveProxy,
              style: ElevatedButton.styleFrom(
                backgroundColor: Colors.green,
                padding: EdgeInsets.symmetric(horizontal: 20, vertical: 12),
              ),
            ),
          ],
        ),
      ),
    );
  }
}