Archived
285 lines
11 KiB
Dart
Executable File
285 lines
11 KiB
Dart
Executable File
import 'dart:math';
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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void main() {
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runApp(const MyApp());
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}
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class MyApp extends StatefulWidget {
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const MyApp({super.key});
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@override
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State<MyApp> createState() => _MyAppState();
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}
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class _MyAppState extends State<MyApp> {
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TextEditingController categoryController = TextEditingController();
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TextEditingController changeDataController = TextEditingController();
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ScrollController scrollController = ScrollController();
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String resultStr = "";
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@override
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Widget build(BuildContext context) {
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return MaterialApp(
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home: Scaffold(
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appBar: AppBar(title: Text("密码生成器")),
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body: Container(
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padding: EdgeInsets.only(left: 10, right: 10),
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child: ListView(
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scrollDirection: Axis.vertical,
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controller: scrollController,
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children: [
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DefaultTextStyle(
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style: TextStyle(color: Colors.black, fontSize: 20),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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"C (communication)",
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style: TextStyle(
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fontWeight: FontWeight.bold,
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fontSize: 25,
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color: Colors.green,
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),
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),
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Text("社交类: 该类软件包含以文本，语音，图片，音视频等方式进行社交，典型如微信，qq，电子邮箱 "),
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SizedBox(height: 20),
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Text(
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"T (technology)",
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style: TextStyle(
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fontWeight: FontWeight.bold,
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fontSize: 25,
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color: Colors.green,
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),
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),
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Text(
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"科技/技术类: 该类软件包含以提供计算机技术等其他工程类技术支持/论坛为主的服务，典型如csdn，华为 ",
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),
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SizedBox(height: 20),
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Text(
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"S (shopping)",
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style: TextStyle(
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fontWeight: FontWeight.bold,
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fontSize: 25,
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color: Colors.green,
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),
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),
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Text("购物/外卖类: 该类软件包含各种以线上购买实体商品为主的服务，典型如淘宝，京东 "),
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SizedBox(height: 20),
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Text(
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"EDU (education)",
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style: TextStyle(
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fontWeight: FontWeight.bold,
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fontSize: 25,
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color: Colors.green,
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),
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),
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Text("教育/学习类: 该类软件专注于提供教育，学术，辅导等的支持/资料，典型如扇贝英语，作业帮 "),
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SizedBox(height: 20),
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Text(
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"E (entertainment)",
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style: TextStyle(
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fontWeight: FontWeight.bold,
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fontSize: 25,
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color: Colors.green,
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),
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),
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Text("游戏/娱乐类: 该类软件专注于以提供电子游戏，休闲娱乐为主的服务，典型如王者荣耀，抖音 "),
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SizedBox(height: 20),
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Text(
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"O (other)",
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style: TextStyle(
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fontWeight: FontWeight.bold,
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fontSize: 25,
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color: Colors.green,
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),
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),
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Text("其他: 当一个服务不属于以上任何类别，那么归属于此类，典型如processon，工商银行 "),
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],
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),
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SizedBox(height: 20),
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Row(
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crossAxisAlignment: CrossAxisAlignment.end,
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children: [
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Expanded(flex: 2, child: Text("Category:")),
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Expanded(
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flex: 3,
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child: SizedBox(
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width: 200,
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height: 50,
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child: TextField(controller: categoryController),
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),
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),
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],
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),
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SizedBox(height: 20),
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Row(
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crossAxisAlignment: CrossAxisAlignment.end,
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children: [
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Expanded(flex: 2, child: Text("Change date: ")),
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Expanded(
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flex: 3,
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child: SizedBox(
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width: 200,
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height: 50,
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child: TextField(controller: changeDataController),
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),
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),
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],
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),
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SizedBox(height: 20),
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Center(
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child: GestureDetector(
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onTap: () {
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setState(() {
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resultStr = genPasswd();
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});
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WidgetsBinding.instance.addPostFrameCallback((val) {
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scrollController.jumpTo(
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scrollController.position.maxScrollExtent,
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);
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});
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},
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child: Container(
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width: MediaQuery.of(context).size.width / 2,
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height: 50,
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alignment: Alignment.center,
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decoration: BoxDecoration(
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color: Color(0xFF8447D5),
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borderRadius: BorderRadiusGeometry.circular(20),
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),
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child: Text(
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"generate password",
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style: TextStyle(fontSize: 18, color: Colors.white),
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),
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),
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),
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),
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resultStr.isEmpty
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? SizedBox()
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: Center(
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child: Builder(
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builder: (BuildContext context) {
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return GestureDetector(
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onLongPress: () {
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Clipboard.setData(
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ClipboardData(text: resultStr),
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).then((val) {
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double offsetTop =
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MediaQuery.of(context).size.height -
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200;
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ScaffoldMessenger.of(
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context,
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).showSnackBar(
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SnackBar(
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backgroundColor: Color(0xE4616161),
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behavior: SnackBarBehavior.floating,
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margin: EdgeInsets.only(
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bottom: offsetTop,
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left: 100,
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right: 100
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),
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content: Center(
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child: Text("saved to clipboard"),
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),
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),
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);
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});
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},
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child: Container(
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margin: EdgeInsets.only(top: 10),
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child: Text(
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resultStr,
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style: TextStyle(
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fontSize: 30,
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fontWeight: FontWeight.w900,
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letterSpacing: 2,
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),
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),
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),
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);
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},
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),
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),
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],
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),
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),
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],
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),
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),
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),
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);
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}
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String genRandomString(int length) {
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String re = "";
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Random random = Random();
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for (int i = 0; i < length; i++) {
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int de = random.nextInt(2) + 1;
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switch (de) {
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case 1:
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int lowerCase = random.nextInt(122 - 97 + 1) + 97;
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re += String.fromCharCode(lowerCase);
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break;
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case 2:
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int upperCase = random.nextInt(90 - 65 + 1) + 65;
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re += String.fromCharCode(upperCase);
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break;
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default:
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print("Unexpected value: $de");
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break;
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}
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}
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return re;
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}
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String genLowerLetter(int length) {
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String re = "";
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Random random = Random();
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for (int i = 0; i < length; i++) {
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int lowerCase = random.nextInt(122 - 97 + 1) + 97;
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re += String.fromCharCode(lowerCase);
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}
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return re;
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}
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String genPasswd() {
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String categoryText = categoryController.text;
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String dateText = changeDataController.text;
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if (categoryText.isEmpty || dateText.isEmpty) {
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return "Please done the form";
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}
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// verify if the field valid
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// ================== START ==================
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const categoryList = ["C", "T", "S", "EDU", "E", "O"];
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if (!categoryList.contains(categoryText)) {
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return "Category: input not valid";
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}
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if (dateText.length != 4) {
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return "Date: the length must be 4";
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}
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var dateList = dateText.split('');
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for (var i = 0; i < dateList.length; i++) {
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if (!(dateList[i].codeUnitAt(0) >= 48 &&
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dateList[i].codeUnitAt(0) <= 57)) {
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return "Date: all digit must be a number";
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}
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}
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// ================== END ==================
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return "${categoryText}${dateText}${genLowerLetter(2)}_${genRandomString(8)}";
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}
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}
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