// main.dart  --  This file is part of tiny_computer.               
                                                                        
// Copyright (C) 2023 Caten Hu                                          
                                                                        
// Tiny Computer is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published    
// by the Free Software Foundation, either version 3 of the License,    
// or any later version.                               
                                                                         
// Tiny Computer is distributed in the hope that it will be useful,          
// but WITHOUT ANY WARRANTY; without even the implied warranty          
// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.              
// See the GNU General Public License for more details.                 
                                                                     
// You should have received a copy of the GNU General Public License    
// along with this program.  If not, see http://www.gnu.org/licenses/.


import 'dart:async';
import 'dart:convert';
import 'dart:math';
//import 'dart:convert';

//import 'package:flutter/services.dart';

import 'package:clipboard/clipboard.dart';
import 'package:flutter/gestures.dart';
import 'package:flutter_pty/flutter_pty.dart';
import 'package:permission_handler/permission_handler.dart';
//import 'package:flutter/services.dart';
import 'package:url_launcher/url_launcher.dart';
import 'package:flutter/material.dart';
import 'package:xterm/xterm.dart';
//import 'package:xterm/flutter.dart';
import 'package:tiny_computer/workflow.dart';

import 'package:unity_ads_plugin/unity_ads_plugin.dart';

import 'package:ffmpeg_kit_flutter_full_gpl/ffmpeg_kit.dart';

void main() {
  runApp(const MyApp());
}

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Tiny Computer',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
        //fontFamily: "FiraCode",
      ),
      home: const MyHomePage(title: 'Tiny Computer'),
    );
  }
}


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

  @override
  State<FakeLoadingStatus> createState() => _FakeLoadingStatusState();
}

class _FakeLoadingStatusState extends State<FakeLoadingStatus> {

  double _progressT = 0;
  Timer? _timer;

  @override
  void initState() {
    super.initState();
    _timer = Timer.periodic(const Duration(milliseconds: 100), (timer) {
      setState(() {
        _progressT += 0.1;
      });
    });
  }

  @override
  Widget build(BuildContext context) {
    return LinearProgressIndicator(value: 1 - pow(10, _progressT / -300).toDouble());
  }

  @override
  void dispose() {
    _timer?.cancel();
    super.dispose();
  }
}

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

  @override
  State<InfoPage> createState() => _InfoPageState();
}

class _InfoPageState extends State<InfoPage> {
  final List<bool> _expandState = [false, false, false, false, false];
  @override
  Widget build(BuildContext context) {
    return ExpansionPanelList(
      elevation: 1,
      expandedHeaderPadding: const EdgeInsets.all(0),
      expansionCallback: (panelIndex, isExpanded) {
        setState(() {
          _expandState[panelIndex] = isExpanded;
        });
      },
    children: [
      ExpansionPanel(
        headerBuilder: (context, isExpanded) {
          return const ListTile(title: Text("使用说明"));
        },
        body: const Padding(padding: EdgeInsets.all(8), child: Text("""
第一次加载, 大概需要5到10分钟...
请不要在安装时退出软件

如果过了很长时间都没有加载完成
可以去设置里看看小小电脑占用空间是不是一直没变
如果是说明卡在什么地方了
建议清除本软件数据重来一次

(有一位网友提到过
自己无论怎么清软件数据都装不上
但在重启手机之后就装上了)

一些注意事项：
此软件以GPL协议免费开源
如果是买的就是被骗了, 请举报
源代码在这里: https://github.com/Cateners/tiny_computer
软件也会第一时间在这里更新
请尽可能在这里下载软件, 确保是正版

常见问题：
如果你的系统版本大于等于android 12
可能会在使用过程中异常退出(返回错误码9)
届时本软件会提供方案指引你修复
并不难
此软件因为没有权限
所以不能帮你修复

如果你给了存储权限
那么通过主目录下的文件夹
就可以访问手机存储

有一些设备做了更多访问限制
比如下载文件夹可能不可写入
这样会导致把文件保存到下载目录时出现问题
(火狐浏览器可能因此无法下载文件)
不过这个很好解决
换个文件夹保存就行了

如果认为界面大小比例不合适
可以通过调整图形界面左栏设置-高级里的屏幕缩放比例
如果感觉界面卡卡的
可以适当调低图像质量或压缩等级

如果你想安装其他软件
可以使用容器自带的tmoe
但并不保证安装了能用哦
(事实上, 目前容器里的
VSCode、输入法
都是用tmoe安装的
就连系统本身也是用tmoe安装的)

也可以在网上搜索
"ubuntu安装xxx教程"
"linux安装xxx教程"等等
本软件也提供一些基本软件安装按钮
包括图形处理, 视频剪辑, 科学计算相关的软件
稍后你就会看到

如果你需要更多字体
在给了存储权限的情况下
直接将字体复制到手机存储的Fonts文件夹即可
一些常用的办公字体
可以在Windows电脑的C:\\Windows\\Fonts文件夹找到
由于可能的版权问题
软件不能帮你做

关于中文输入的问题
强烈建议不要使用安卓中文输入法直接输入中文
而是使用英文键盘通过容器的输入法(Ctrl+空格切换)输入中文
避免丢字错字

在之前的版本中有网友反馈过这些问题
还请注意：
三星Galaxy S21 Ultra, 安卓13, 黑屏
红米Note 12, 安卓13（miui14）, 黑屏
红米Note 11T Pro+， miui13.0.4，“无法连接”
Vivo Pad，安卓13，看不见鼠标移动（可以去左栏设置开启显示原系统光标替代）
关于这些
我目前没有什么好的解决办法
(毕竟我没有这些设备
也不方便定位原因)
如果你遇到了类似问题
不管解没解决
都可以去https://github.com/Cateners/tiny_computer/issues/1留个言

如果软件里有程序正在正常运行
请不要强行关闭本软件
否则可能会损坏本容器
特别是在安装某些比较大的软件的时候

感谢使用!

(顺带一提, 全部解压完大概需要4~5GB空间
解压途中占用空间可能更多
请确保有足够的空间
(这样真的Tiny吗><))

"""
        )),
        isExpanded: _expandState[0],
      ),
      ExpansionPanel(
        isExpanded: _expandState[1],
        headerBuilder: ((context, isExpanded) {
          return const ListTile(title: Text("开源许可"));
        }), body: const Padding(padding: EdgeInsets.all(8), child: Text("""
Flutter, path_provider, webview_flutter, url_launcher, shared_preferences

Copyright 2014 The Flutter Authors. All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above
      copyright notice, this list of conditions and the following
      disclaimer in the documentation and/or other materials provided
      with the distribution.
    * Neither the name of Google Inc. nor the names of its
      contributors may be used to endorse or promote products derived
      from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

------------
xterm

The MIT License (MIT)

Copyright (c) 2020 xuty

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

------------
flutter_pty

The MIT License (MIT)

Copyright (c) 2022 xuty

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

------------
permission_handler

MIT License

Copyright (c) 2018 Baseflow

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

------------
http

Copyright 2014, the Dart project authors. 

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above
      copyright notice, this list of conditions and the following
      disclaimer in the documentation and/or other materials provided
      with the distribution.
    * Neither the name of Google LLC nor the names of its
      contributors may be used to endorse or promote products derived
      from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

------------
retry

Apache License
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   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

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------------
intl

Copyright 2013, the Dart project authors.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:

    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above
      copyright notice, this list of conditions and the following
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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------------
unity_ads_plugin

MIT License

Copyright (c) 2021 Pavel Zaichyk

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
"""))),
      ExpansionPanel(
        isExpanded: _expandState[2],
        headerBuilder: ((context, isExpanded) {
          return const ListTile(title: Text("隐私政策"));
        }), body: const Padding(padding: EdgeInsets.all(8), child: Text("""
除由Unity提供的广告功能外, 本软件不会收集你的隐私信息。

申请的权限用于以下目的：
文件相关权限：用于系统访问手机目录；
相机和麦克风：用于推流，默认不会开启。

关于广告获取隐私信息的说明, 在第一次看广告时Unity会向你做出告知。
届时你可以选择要向Unity提供哪些信息。
"""))),
      ExpansionPanel(
        isExpanded: _expandState[3],
        headerBuilder: ((context, isExpanded) {
          return const ListTile(title: Text("服务条款"));
        }), body: const Padding(padding: EdgeInsets.all(8), child: Text("""
小小电脑: 即开即用的类PC环境

版权所有(C) 2023 Caten Hu

本程序是自由软件：你可以再分发之和/或依照由自由软件基金会发布的 GNU 通用公共许可证修改之，无论是版本 3 许可证，还是任何以后版都可以。
发布该程序是希望它能有用，但是并无保障;甚至连可销售和符合某个特定的目的都不保证。请参看 GNU 通用公共许可证，了解详情。
你应该随程序获得一份 GNU 通用公共许可证的复本。如果没有，请看 <https://www.gnu.org/licenses/>。

你可能注意到本软件使用了Unity广告服务，
那么它是否与本项目有冲突？

事实上，这个项目不依赖广告，
你完全可以自行编译一份不包含广告的版本；

不管怎么说，我希望这不是一个问题...

...当然！
我还是不想看到你们去编译一个不含广告的版本><
"""))),
      ExpansionPanel(
        isExpanded: _expandState[4],
        headerBuilder: ((context, isExpanded) {
          return const ListTile(title: Text("支持作者"));
        }), body: Column(
        children: [
          const Padding(padding: EdgeInsets.all(8), child: Text("""
这个软件预计会有一些广告
分为横幅广告和视频广告
横幅广告在终端和控制页面的顶端出现
(但不知道是不是因为代码没写对
反正我从没见横幅广告成功加载过)
视频广告在需要解锁某些功能时自行观看

这些功能需要累计完整观看对应数目广告后永久解锁：
启用终端: 观看2个广告
启用小键盘: 观看3个广告
关闭横幅广告: 观看5个广告
终端最大行数修改: 观看6个广告
推流参数修改: 观看8个广告

我设置了每天最多可以看5个广告。
只要看满1个广告, 就可以在本次使用期间临时解锁全部功能。
只要看满2个广告, 就可以在当日使用期间临时解锁全部功能。

总之为了良好的体验
在图形界面是不会出现广告的
这点还请放心

---注意事项---

我注意到Unity提供了一些不那么合适的广告
一般如果我看到这些广告就在后台直接禁了
不过也可能有漏网之鱼
你们可以联系我禁掉

---下面是赛博乞讨环节---

(*>ω<*)
虽然感觉不太可能有人捐赠
但转念一想这个可能性不是比中彩票大多了吗
所以还是保留了下来
""")),
          const FractionallySizedBox(
            widthFactor: 0.8,
            child: Image(image: AssetImage("images/alipay.png"))
          ),
          ElevatedButton(
            onPressed: () {
              launchUrl(Uri.parse("https://github.com/Cateners/tiny_computer"), mode: LaunchMode.externalApplication);
            },
            child: const Text("项目地址"),
          ),
        ]
      )),
    ],
  );
  }
}

class LoadingPage extends StatelessWidget {
  const LoadingPage({super.key});
  @override
  Widget build(BuildContext context) {
    return const Padding(
              padding: EdgeInsets.all(8),
              child: Column(
                children: [
                  Padding(
                    padding: EdgeInsets.fromLTRB(16, 16, 16, 16),
                    child: FractionallySizedBox(
                      widthFactor: 0.4,
                      child: Image(
                        image: AssetImage("images/icon.png")
                      )
                    ),
                  ),
                  Padding(
                    padding: EdgeInsets.fromLTRB(0, 0, 0, 8),
                    child: Text("小小电脑", textScaleFactor: 2),
                  ),
                  FakeLoadingStatus(),
                  Expanded(child:
                  Padding(padding: EdgeInsets.all(8), child: Card(child: Padding(padding: EdgeInsets.all(8), child: 
                  
                    Scrollbar(child:
                      SingleChildScrollView(
                        child: InfoPage()
                      )
                    )
                  ))
                  ,))
                ]
              )
            );
  }
}

class ForceScaleGestureRecognizer extends ScaleGestureRecognizer {
  @override
  void rejectGesture(int pointer) {
    super.acceptGesture(pointer);
  }
}

RawGestureDetector forceScaleGestureDetector({
  GestureScaleUpdateCallback? onScaleUpdate,
  GestureScaleEndCallback? onScaleEnd,
  Widget? child,
}) {
  return RawGestureDetector(
    gestures: {
      ForceScaleGestureRecognizer:GestureRecognizerFactoryWithHandlers<ForceScaleGestureRecognizer>(() {
        return ForceScaleGestureRecognizer();
      }, (detector) {
        detector.onUpdate = onScaleUpdate;
        detector.onEnd = onScaleEnd;
      })
    },
    child: child,
  );
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {

  //高级设置，全局设置
  final List<bool> _expandState = [false, false, false, false, false];

  bool bannerAdsFailedToLoad = false;

  //安装完成了吗？
  //完成后从加载界面切换到主界面
  bool isLoadingComplete = false;
  //主界面索引
  int pageIndex = 0;

  final ButtonStyle commandButtonStyle = OutlinedButton.styleFrom(
    tapTargetSize: MaterialTapTargetSize.shrinkWrap,
    minimumSize: const Size(0, 0),
    padding: const EdgeInsets.fromLTRB(4, 2, 4, 2)
  );

  final ButtonStyle controlButtonStyle = OutlinedButton.styleFrom(
    textStyle: const TextStyle(fontWeight: FontWeight.w400),
    side: const BorderSide(color: Color(0x1F000000)),
    tapTargetSize: MaterialTapTargetSize.shrinkWrap,
    minimumSize: const Size(0, 0),
    padding: const EdgeInsets.fromLTRB(8, 4, 8, 4)
  );

  @override
  Widget build(BuildContext context) {

    G.homePageStateContext = context;

    if (!isLoadingComplete) {
      Workflow.workflow().then((value) {
        setState(() {
          isLoadingComplete = true;
        });
      });
    }


    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Text(isLoadingComplete?Util.getCurrentProp("name"):widget.title),
      ),
      body: isLoadingComplete?Column(mainAxisSize: MainAxisSize.min, children: [
        (Util.getGlobal("isBannerAdsClosed") as bool)||bannerAdsFailedToLoad?SizedBox.fromSize(size: const Size.square(0)):UnityBannerAd(
          placementId: AdManager.bannerAdPlacementId,
          onLoad: (placementId) => debugPrint('Banner loaded: $placementId'),
          onClick: (placementId) => debugPrint('Banner clicked: $placementId'),
          onFailed: (placementId, error, message) {
            debugPrint('Banner Ad $placementId failed: $error $message');
            setState(() {
              bannerAdsFailedToLoad = true;
            });
          },
        ), Expanded(child: AnimatedSwitcher(
        duration: const Duration(milliseconds: 256),
        child: [
          Column(children: [Expanded(child: forceScaleGestureDetector(onScaleUpdate: (details) {
            setState(() {
              G.termFontScale = (details.scale * (Util.getGlobal("termFontScale") as double)).clamp(0.2, 5);
            });
          }, onScaleEnd: (details) async {
            await G.prefs.setDouble("termFontScale", G.termFontScale);
          }, child: TerminalView(G.termPtys[G.currentContainer]!.terminal, textScaleFactor: G.termFontScale, keyboardType: TextInputType.multiline,))), 
            (Util.getGlobal("isTerminalCommandsEnabled") as bool)?Padding(padding: const EdgeInsets.all(8), child: Row(children: [AnimatedBuilder(
              animation: G.keyboard,
              builder: (context, child) => ToggleButtons(
                constraints: const BoxConstraints(minWidth: 32, minHeight: 24),
                tapTargetSize: MaterialTapTargetSize.shrinkWrap,
                borderRadius: const BorderRadius.all(Radius.circular(8)),
                isSelected: [G.keyboard.ctrl, G.keyboard.alt, G.keyboard.shift],
                onPressed: (index) {
                  switch (index) {
                    case 0:
                      G.keyboard.ctrl = !G.keyboard.ctrl;
                      break;
                    case 1:
                      G.keyboard.alt = !G.keyboard.alt;
                      break;
                    case 2:
                      G.keyboard.shift = !G.keyboard.shift;
                      break;
                  }
                },
                children: const [Text('Ctrl'), Text('Alt'), Text('Shift')],
              ),
            ),
            SizedBox.fromSize(size: const Size.square(8)), 
            Expanded(child: SizedBox(height: 24, child: ListView.separated(scrollDirection: Axis.horizontal, itemBuilder:(context, index) {
              return OutlinedButton(style: controlButtonStyle, onPressed: () {
                G.termPtys[G.currentContainer]!.terminal.keyInput(D.termCommands[index]["key"]! as TerminalKey);
              }, child: Text(D.termCommands[index]["name"]! as String));
            }, separatorBuilder:(context, index) {
              return SizedBox.fromSize(size: const Size.square(4));
            }, itemCount: D.termCommands.length))), SizedBox.fromSize(size: const Size(72, 0))])):SizedBox.fromSize(size: const Size.square(0))
          ]), Padding(
              padding: const EdgeInsets.all(8),
              child: Scrollbar(child: SingleChildScrollView(restorationId: "control-scroll", child: Column(
                children: [
                  const Padding(
                    padding: EdgeInsets.all(16),
                    child: FractionallySizedBox(
                      widthFactor: 0.4,
                      child: Image(
                        image: AssetImage("images/icon.png")
                      )
                    ),
                  ),
                  /*Padding(
                    padding: const EdgeInsets.fromLTRB(0, 0, 0, 8),
                    child: Text(Util.getCurrentProp("name"), textScaleFactor: 2),
                  ),*/
                  Wrap(alignment: WrapAlignment.center, spacing: 4.0, runSpacing: 4.0, children: Util.getCurrentProp("commands")
                    .asMap().entries.map<Widget>((e) {
                    return OutlinedButton(style: commandButtonStyle, child: Text(e.value["name"]!), onPressed: () {
                      setState(() {
                        Util.termWrite(e.value["command"]!);
                        pageIndex = 0;
                      });
                    }, onLongPress: () {
                      String name = e.value["name"]!;
                      String command = e.value["command"]!;
                      showDialog(context: context, builder: (context) {
                        return AlertDialog(title: const Text("指令编辑"), content: SingleChildScrollView(child: Column(children: [
                          TextFormField(initialValue: name, decoration: const InputDecoration(border: OutlineInputBorder(), labelText: "指令名称"), onChanged: (value) {
                            name = value;
                          }),
                          SizedBox.fromSize(size: const Size.square(8)),
                          TextFormField(maxLines: null, initialValue: command, decoration: const InputDecoration(border: OutlineInputBorder(), labelText: "指令内容"), onChanged: (value) {
                            command = value;
                          }),
                        ])), actions: [
                          TextButton(onPressed:() async {
                            await Util.setCurrentProp("commands", Util.getCurrentProp("commands")
                              ..removeAt(e.key));
                            setState(() {});
                            if (!context.mounted) return;
                            Navigator.of(context).pop();
                          }, child: const Text("删除该项")),
                          TextButton(onPressed:() {
                            Navigator.of(context).pop();
                          }, child: const Text("取消")),
                          TextButton(onPressed:() async {
                            await Util.setCurrentProp("commands", Util.getCurrentProp("commands")
                              ..setAll(e.key, [{"name": name, "command": command}]));
                            setState(() {});
                            if (!context.mounted) return;
                            Navigator.of(context).pop();
                          }, child: const Text("保存")),
                        ]);
                      },);
                    },);
                  }).toList()..add(OutlinedButton(style: commandButtonStyle, onPressed:() {
                      String name = "";
                      String command = "";
                      showDialog(context: context, builder: (context) {
                        return AlertDialog(title: const Text("指令编辑"), content: SingleChildScrollView(child: Column(children: [
                          TextFormField(initialValue: name, decoration: const InputDecoration(border: OutlineInputBorder(), labelText: "指令名称"), onChanged: (value) {
                            name = value;
                          }),
                          SizedBox.fromSize(size: const Size.square(8)),
                          TextFormField(maxLines: null, initialValue: command, decoration: const InputDecoration(border: OutlineInputBorder(), labelText: "指令内容"), onChanged: (value) {
                            command = value;
                          }),
                        ])), actions: [
                          TextButton(onPressed:() {
                            Navigator.of(context).pop();
                          }, child: const Text("取消")),
                          TextButton(onPressed:() async {
                            await Util.setCurrentProp("commands", Util.getCurrentProp("commands")
                              ..add({"name": name, "command": command}));
                            setState(() {});
                            if (!context.mounted) return;
                            Navigator.of(context).pop();
                          }, child: const Text("添加")),
                        ]);
                      },);
                  }, onLongPress: () {
                    showDialog(context: context, builder: (context) {
                      return AlertDialog(content: const Text("是否重置所有快捷指令？"), actions: [
                        TextButton(onPressed:() {
                          Navigator.of(context).pop();
                        }, child: const Text("取消")),
                        TextButton(onPressed:() async {
                          await Util.setCurrentProp("commands", D.commands);
                          setState(() {});
                          if (!context.mounted) return;
                          Navigator.of(context).pop();
                        }, child: const Text("是")),
                      ]);
                    });
                  }, child: const Text("添加快捷指令")))),
                  Padding(padding: const EdgeInsets.all(8), child: Card(child: Padding(padding: const EdgeInsets.all(8), child: 
                        Column(children: [
                          ExpansionPanelList(
                            elevation: 1,
                            expandedHeaderPadding: const EdgeInsets.all(0),
                            expansionCallback: (panelIndex, isExpanded) {
                            setState(() {
                              _expandState[panelIndex] = isExpanded;
                            });
                          },children: [
                            ExpansionPanel(
                              isExpanded: _expandState[0],
                              headerBuilder: ((context, isExpanded) {
                                return const ListTile(title: Text("高级设置"), subtitle: Text("修改后重启生效"));
                              }), body: Padding(padding: const EdgeInsets.all(12), child: Column(children: [
                                TextFormField(maxLines: null, initialValue: Util.getCurrentProp("name"), decoration: const InputDecoration(border: OutlineInputBorder(), labelText: "容器名称"), onChanged: (value) async {
                                  await Util.setCurrentProp("name", value);
                                  setState(() {});
                                }),
                                SizedBox.fromSize(size: const Size.square(8)),
                                TextFormField(maxLines: null, initialValue: Util.getCurrentProp("boot"), decoration: const InputDecoration(border: OutlineInputBorder(), labelText: "启动命令"), onChanged: (value) async {
                                  await Util.setCurrentProp("boot", value);
                                }),
                                SizedBox.fromSize(size: const Size.square(8)),
                                TextFormField(maxLines: null, initialValue: Util.getCurrentProp("vnc"), decoration: const InputDecoration(border: OutlineInputBorder(), labelText: "vnc启动命令"), onChanged: (value) async {
                                  await Util.setCurrentProp("vnc", value);
                                }),
                                SizedBox.fromSize(size: const Size.square(8)),
                                TextFormField(maxLines: null, initialValue: Util.getCurrentProp("vncUrl"), decoration: const InputDecoration(border: OutlineInputBorder(), labelText: "网页跳转地址"), onChanged: (value) async {
                                  await Util.setCurrentProp("vncUrl", value);
                                }),
                              ],))),
                            ExpansionPanel(
                              isExpanded: _expandState[1],
                              headerBuilder: ((context, isExpanded) {
                                return const ListTile(title: Text("全局设置"), subtitle: Text("在这里关广告、开启终端编辑"));
                              }), body: Padding(padding: const EdgeInsets.all(12), child: Column(children: [
                                TextFormField(autovalidateMode: AutovalidateMode.onUserInteraction, initialValue: (Util.getGlobal("termMaxLines") as int).toString(), decoration: const InputDecoration(border: OutlineInputBorder(), labelText: "终端最大行数(重启软件生效)"), readOnly: Util.shouldWatchAds(G.adsRequired["changeTermMaxLines"]!),
                                  keyboardType: TextInputType.number,
                                  onTap: () {
                                    if (Util.shouldWatchAds(G.adsRequired["changeTermMaxLines"]!)) {
                                      ScaffoldMessenger.of(context).hideCurrentSnackBar();
                                      ScaffoldMessenger.of(context).showSnackBar(
                                        const SnackBar(content: Text("观看六次视频广告永久解锁><"))
                                      );
                                    }
                                  },
                                  validator: (value) {
                                    return Util.validateBetween(value, 1024, 2147483647, () async {
                                      await G.prefs.setInt("termMaxLines", int.parse(value!));
                                    });
                                  },),
                                SizedBox.fromSize(size: const Size.square(16)),
                                TextFormField(autovalidateMode: AutovalidateMode.onUserInteraction, initialValue: (Util.getGlobal("defaultAudioPort") as int).toString(), decoration: const InputDecoration(border: OutlineInputBorder(), labelText: "pulseaudio接收端口"),
                                  keyboardType: TextInputType.number,
                                  validator: (value) {
                                    return Util.validateBetween(value, 0, 65535, () async {
                                      await G.prefs.setInt("defaultAudioPort", int.parse(value!));
                                    });
                                  }
                                ),
                                SizedBox.fromSize(size: const Size.square(16)),
                                SwitchListTile(title: const Text("关闭横幅广告"), value: Util.getGlobal("isBannerAdsClosed") as bool, onChanged:(value) {
                                  if (value && Util.shouldWatchAds(G.adsRequired["closeBannerAds"]!)) {
                                    ScaffoldMessenger.of(context).hideCurrentSnackBar();
                                    ScaffoldMessenger.of(context).showSnackBar(
                                      const SnackBar(content: Text("观看五次视频广告永久解锁><"))
                                    );
                                    return;
                                  }
                                  G.prefs.setBool("isBannerAdsClosed", value);
                                  setState(() {});
                                },),
                                SizedBox.fromSize(size: const Size.square(8)),
                                SwitchListTile(title: const Text("启用终端"), value: Util.getGlobal("isTerminalWriteEnabled") as bool, onChanged:(value) {
                                  if (value && Util.shouldWatchAds(G.adsRequired["enableTerminalWrite"]!)) {
                                    ScaffoldMessenger.of(context).hideCurrentSnackBar();
                                    ScaffoldMessenger.of(context).showSnackBar(
                                      SnackBar(content: const Text("观看两次视频广告永久解锁><"), action: SnackBarAction(label: "啊?", onPressed: () {
                                        G.prefs.setBool("isTerminalWriteEnabled", value);
                                        setState(() {});
                                      },))
                                    );
                                    return;
                                  }
                                  G.prefs.setBool("isTerminalWriteEnabled", value);
                                  setState(() {});
                                },),
                                SizedBox.fromSize(size: const Size.square(8)),
                                SwitchListTile(title: const Text("启用终端小键盘"), value: Util.getGlobal("isTerminalCommandsEnabled") as bool, onChanged:(value) {
                                  if (value && Util.shouldWatchAds(G.adsRequired["enableTerminalCommands"]!)) {
                                    ScaffoldMessenger.of(context).hideCurrentSnackBar();
                                    ScaffoldMessenger.of(context).showSnackBar(
                                      const SnackBar(content: Text("观看三次视频广告永久解锁><"))
                                    );
                                    return;
                                  }
                                  G.prefs.setBool("isTerminalCommandsEnabled", value);
                                  setState(() {});
                                },),
                                SizedBox.fromSize(size: const Size.square(8)),
                                SwitchListTile(title: const Text("终端粘滞键"), value: Util.getGlobal("isStickyKey") as bool, onChanged:(value) {
                                  G.prefs.setBool("isStickyKey", value);
                                  setState(() {});
                                },),
                                SizedBox.fromSize(size: const Size.square(8)),
                                SwitchListTile(title: const Text("开启时启动图形界面"), value: Util.getGlobal("autoLaunchVnc") as bool, onChanged:(value) {
                                  G.prefs.setBool("autoLaunchVnc", value);
                                  setState(() {});
                                },),
                              ],))),
                            ExpansionPanel(
                              isExpanded: _expandState[2],
                              headerBuilder: ((context, isExpanded) {
                                return const ListTile(title: Text("相机推流"), subtitle: Text("实验性功能"));
                              }), body: Padding(padding: const EdgeInsets.all(12), child: Column(children: [
                                const Text("成功启动推流后可以点击快捷指令\"拉流测试\"并前往图形界面查看效果。\n注意这并不能为系统创建一个虚拟相机；\n另外使用相机是高耗电行为，不用时需及时关闭。"),
                                const SizedBox.square(dimension: 16),
                                Wrap(alignment: WrapAlignment.center, spacing: 4.0, runSpacing: 4.0, children: [
                                  OutlinedButton(style: commandButtonStyle, child: const Text("申请相机权限"), onPressed: () {
                                    Permission.camera.request();
                                  }),
                                  OutlinedButton(style: commandButtonStyle, child: const Text("申请麦克风权限"), onPressed: () {
                                    Permission.microphone.request();
                                  }),
                                  OutlinedButton(style: commandButtonStyle, child: const Text("查看输出"), onPressed: () {
                                    if (G.streamingOutput == "") {
                                      ScaffoldMessenger.of(context).hideCurrentSnackBar();
                                      ScaffoldMessenger.of(context).showSnackBar(
                                        const SnackBar(content: Text("无输出"))
                                      );
                                      return;
                                    }
                                    showDialog(context: context, builder: (context) {
                                      return AlertDialog(content: SingleChildScrollView(child:
                                        Text(G.streamingOutput)), actions: [
                                      TextButton(onPressed:() {
                                        FlutterClipboard.copy(G.streamingOutput).then(( value ) {
                                          ScaffoldMessenger.of(context).hideCurrentSnackBar();
                                          ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text("已复制")));
                                        });
                                        Navigator.of(context).pop();
                                      }, child: const Text("复制")),
                                      TextButton(onPressed:() {
                                        Navigator.of(context).pop();
                                      }, child: const Text("取消")),
                                    ]);
                                    });
                                  }),
                                ]),
                                const SizedBox.square(dimension: 16),
                                TextFormField(maxLines: null, initialValue: Util.getGlobal("defaultFFmpegCommand") as String, decoration: const InputDecoration(border: OutlineInputBorder(), labelText: "ffmpeg推流命令"), readOnly: Util.shouldWatchAds(G.adsRequired["changeFFmpegCommand"]!),
                                  onTap: () {
                                    if (Util.shouldWatchAds(G.adsRequired["changeFFmpegCommand"]!)) {
                                      ScaffoldMessenger.of(context).hideCurrentSnackBar();
                                      ScaffoldMessenger.of(context).showSnackBar(
                                        const SnackBar(content: Text("观看八次视频广告永久解锁><"))
                                      );
                                    }
                                  },
                                  onChanged: (value) async {
                                    await G.prefs.setString("defaultFFmpegCommand", value);
                                  },
                                ),
                                const SizedBox.square(dimension: 16),
                                SwitchListTile(title: const Text("启动推流服务器"), subtitle: const Text("mediamtx"), value: G.isStreamServerStarted, onChanged:(value) {
                                  switch (value) {
                                    case true: {
                                      G.streamServerPty = Pty.start("/system/bin/sh");
                                      G.streamServerPty.write(const Utf8Encoder().convert("${G.dataPath}/bin/mediamtx ${G.dataPath}/bin/mediamtx.yml & pid=\$(echo \$!)\n"));
                                      G.streamServerPty.exitCode.then((value) {
                                        G.isStreamServerStarted = false;
                                        setState(() {});
                                      });
                                    }
                                    break;
                                    case false: {
                                      G.streamServerPty.write(const Utf8Encoder().convert("kill \$pid\nexit\n"));
                                    }
                                    break;
                                  }
                                  G.isStreamServerStarted = value;
                                  setState(() {});
                                },),
                                SizedBox.fromSize(size: const Size.square(8)),
                                SwitchListTile(title: const Text("启动推流"), value: G.isStreaming, onChanged:(value) {
                                  switch (value) {
                                    case true: {
                                      FFmpegKit.execute(Util.getGlobal("defaultFFmpegCommand") as String).then((session) {
                                        session.getOutput().then((value) async {
                                          G.isStreaming = false;
                                          G.streamingOutput = value??"";
                                          setState(() {});
                                        });
                                      });
                                    }
                                    break;
                                    case false: {
                                      FFmpegKit.cancel();
                                    }
                                    break;
                                  }
                                  G.isStreaming = value;
                                  setState(() {});
                                },),
                                SizedBox.fromSize(size: const Size.square(8))
                              ],))),
                            ExpansionPanel(
                              isExpanded: _expandState[3],
                              headerBuilder: ((context, isExpanded) {
                                return const ListTile(title: Text("文件访问"));
                              }), body: Padding(padding: const EdgeInsets.all(12), child: Column(children: [
                                const Text("通过这里获取更多文件权限，以实现对特殊目录的访问。"),
                                SizedBox.fromSize(size: const Size.square(16)),
                                Wrap(alignment: WrapAlignment.center, spacing: 4.0, runSpacing: 4.0, children: [
                                  OutlinedButton(style: commandButtonStyle, child: const Text("申请存储权限"), onPressed: () {
                                    Permission.storage.request();
                                  }),
                                  OutlinedButton(style: commandButtonStyle, child: const Text("申请所有文件访问权限"), onPressed: () {
                                    Permission.manageExternalStorage.request();
                                  }),
                                ]),
                                SizedBox.fromSize(size: const Size.square(16)),
                              ],))),
                            ExpansionPanel(
                              isExpanded: _expandState[4],
                              headerBuilder: ((context, isExpanded) {
                                return const ListTile(title: Text("广告记录"), subtitle: Text("在这里看广告"));
                              }), body: Padding(padding: const EdgeInsets.all(12), child: Column(children: [
                                OutlinedButton(child: const Text("看一个广告"), onPressed: () {
                                   if (AdManager.placements[AdManager.rewardedVideoAdPlacementId]!) {
                                    AdManager.showAd(AdManager.rewardedVideoAdPlacementId, () {
                                      final bonus = Util.getRandomBonus();
                                      Util.applyBonus(bonus);
                                      ScaffoldMessenger.of(context).hideCurrentSnackBar();
                                      ScaffoldMessenger.of(context).showSnackBar(
                                        SnackBar(content: Text("你获得了 ${bonus["name"]}*${bonus["amount"]}"))
                                      );
                                      setState(() {
                                        
                                      });
                                    }, () {
                                      ScaffoldMessenger.of(context).hideCurrentSnackBar();
                                      ScaffoldMessenger.of(context).showSnackBar(
                                        const SnackBar(content: Text("已经看5个广告了, 今天也非常感谢><"))
                                      );
                                    });
                                   }
                                  }),
                                  const SizedBox.square(dimension: 8),
                                  Text(Util.getGlobal("adsBonus").map((element) {
                                    final e = jsonDecode(element);
                                    return e["amount"]==0?"":"${e["name"]}*${e["amount"]}\n";
                                  }).join())
                              ],))),
                          ],),
                          SizedBox.fromSize(size: const Size.square(8)),
                          const InfoPage()
                        ]
                    )
                  ))
                  ,)
                ]
              )))
            )][pageIndex],
        transitionBuilder: (child, animation) {
          return FadeTransition(opacity: animation, child: child);
        },))]):const LoadingPage(),
      bottomNavigationBar: Visibility(visible: isLoadingComplete,
        child: BottomNavigationBar(currentIndex: pageIndex, 
          onTap: (index) {
            setState(() {
              pageIndex = index;
            });
          },
          items: const [
            BottomNavigationBarItem(icon: Icon(Icons.monitor), label: "终端"),
            BottomNavigationBarItem(icon: Icon(Icons.video_settings), label: "控制"),
          ],
        )
      ),
      floatingActionButton: Visibility(visible: isLoadingComplete && (pageIndex == 0),
        child: FloatingActionButton(
          onPressed: () => Workflow.launchBrowser(),
          tooltip: "进入图形界面",
          child: const Icon(Icons.play_arrow),
        ),
      ), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }
}
