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237 lines
8.9 KiB
237 lines
8.9 KiB
import 'dart:convert';
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import 'dart:typed_data';
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import 'package:flutter/material.dart';
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import 'package:flutter_dotenv/flutter_dotenv.dart';
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import 'package:http/http.dart' as http;
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import '/utils/encryption/aes_helper.dart';
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import '/utils/encryption/crypto_utils.dart';
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Future<SignupResponse> signUp(context, String username, String password, String confirmPassword) async {
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var keyPair = CryptoUtils.generateRSAKeyPair();
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var rsaPubPem = CryptoUtils.encodeRSAPublicKeyToPem(keyPair.publicKey);
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var rsaPrivPem = CryptoUtils.encodeRSAPrivateKeyToPem(keyPair.privateKey);
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String encRsaPriv = AesHelper.aesEncrypt(password, Uint8List.fromList(rsaPrivPem.codeUnits));
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// TODO: Check for timeout here
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final resp = await http.post(
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Uri.parse('${dotenv.env["SERVER_URL"]}api/v1/signup'),
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headers: <String, String>{
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'Content-Type': 'application/json; charset=UTF-8',
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},
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body: jsonEncode(<String, String>{
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'username': username,
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'password': password,
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'confirm_password': confirmPassword,
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'asymmetric_public_key': rsaPubPem,
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'asymmetric_private_key': encRsaPriv,
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}),
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);
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SignupResponse response = SignupResponse.fromJson(jsonDecode(resp.body));
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if (resp.statusCode != 201) {
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throw Exception(response.message);
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}
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return response;
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}
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class Signup extends StatelessWidget {
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const Signup({Key? key}) : super(key: key);
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: null,
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automaticallyImplyLeading: true,
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//`true` if you want Flutter to automatically add Back Button when needed,
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//or `false` if you want to force your own back button every where
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leading: IconButton(icon: const Icon(Icons.arrow_back),
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onPressed:() => {
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Navigator.pop(context)
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}
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),
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backgroundColor: Colors.transparent,
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shadowColor: Colors.transparent,
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),
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body: const SafeArea(
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child: SignupWidget(),
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)
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);
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}
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}
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class SignupResponse {
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final String status;
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final String message;
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const SignupResponse({
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required this.status,
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required this.message,
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});
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factory SignupResponse.fromJson(Map<String, dynamic> json) {
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return SignupResponse(
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status: json['status'],
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message: json['message'],
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);
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}
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}
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class SignupWidget extends StatefulWidget {
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const SignupWidget({Key? key}) : super(key: key);
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@override
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State<SignupWidget> createState() => _SignupWidgetState();
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}
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class _SignupWidgetState extends State<SignupWidget> {
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final _formKey = GlobalKey<FormState>();
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TextEditingController usernameController = TextEditingController();
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TextEditingController passwordController = TextEditingController();
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TextEditingController passwordConfirmController = TextEditingController();
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@override
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Widget build(BuildContext context) {
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const TextStyle inputTextStyle = TextStyle(
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fontSize: 18,
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);
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final OutlineInputBorder inputBorderStyle = OutlineInputBorder(
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borderRadius: BorderRadius.circular(5),
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borderSide: const BorderSide(
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color: Colors.transparent,
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)
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);
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final ButtonStyle buttonStyle = ElevatedButton.styleFrom(
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primary: Theme.of(context).colorScheme.surface,
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onPrimary: Theme.of(context).colorScheme.onSurface,
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minimumSize: const Size.fromHeight(50),
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padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 10),
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textStyle: TextStyle(
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fontSize: 20,
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fontWeight: FontWeight.bold,
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color: Theme.of(context).colorScheme.error,
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),
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);
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return Center(
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child: Form(
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key: _formKey,
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child: Center(
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child: Padding(
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padding: const EdgeInsets.only(
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left: 20,
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right: 20,
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top: 0,
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bottom: 100,
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),
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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crossAxisAlignment: CrossAxisAlignment.center,
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children: [
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Text(
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'Sign Up',
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style: TextStyle(
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fontSize: 35,
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color: Theme.of(context).colorScheme.onBackground,
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),
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),
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const SizedBox(height: 30),
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TextFormField(
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controller: usernameController,
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decoration: InputDecoration(
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hintText: 'Username',
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enabledBorder: inputBorderStyle,
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focusedBorder: inputBorderStyle,
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),
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style: inputTextStyle,
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// The validator receives the text that the user has entered.
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validator: (value) {
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if (value == null || value.isEmpty) {
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return 'Create a username';
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}
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return null;
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},
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),
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const SizedBox(height: 10),
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TextFormField(
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controller: passwordController,
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obscureText: true,
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enableSuggestions: false,
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autocorrect: false,
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decoration: InputDecoration(
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hintText: 'Password',
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enabledBorder: inputBorderStyle,
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focusedBorder: inputBorderStyle,
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),
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style: inputTextStyle,
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// The validator receives the text that the user has entered.
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validator: (value) {
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if (value == null || value.isEmpty) {
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return 'Enter a password';
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}
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return null;
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},
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),
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const SizedBox(height: 10),
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TextFormField(
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controller: passwordConfirmController,
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obscureText: true,
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enableSuggestions: false,
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autocorrect: false,
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decoration: InputDecoration(
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hintText: 'Password',
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enabledBorder: inputBorderStyle,
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focusedBorder: inputBorderStyle,
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),
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style: inputTextStyle,
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// The validator receives the text that the user has entered.
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validator: (value) {
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if (value == null || value.isEmpty) {
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return 'Confirm your password';
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}
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if (value != passwordController.text) {
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return 'Passwords do not match';
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}
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return null;
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},
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),
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const SizedBox(height: 15),
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ElevatedButton(
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style: buttonStyle,
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onPressed: () {
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if (_formKey.currentState!.validate()) {
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(content: Text('Processing Data')),
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);
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signUp(
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context,
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usernameController.text,
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passwordController.text,
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passwordConfirmController.text
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).then((value) {
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Navigator.of(context).popUntil((route) => route.isFirst);
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}).catchError((error) {
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print(error); // TODO: Show error on interface
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});
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}
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},
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child: const Text('Submit'),
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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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