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305 lines
8.9 KiB
305 lines
8.9 KiB
import 'dart:convert';
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import 'dart:typed_data';
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import 'package:Capsule/components/flash_message.dart';
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import 'package:Capsule/models/my_profile.dart';
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import 'package:flutter/material.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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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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final TextEditingController _usernameController = TextEditingController();
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final TextEditingController _passwordController = TextEditingController();
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final TextEditingController _passwordConfirmController = TextEditingController();
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final TextEditingController _serverUrlController = TextEditingController();
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bool showUrlInput = false;
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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 TextStyle inputTextStyle = const TextStyle(
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fontSize: 18,
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);
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@override
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Widget build(BuildContext context) {
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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: SingleChildScrollView(
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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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input(
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_usernameController,
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'Username',
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false,
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(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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input(
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_passwordController,
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'Password',
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true,
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(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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input(
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_passwordConfirmController,
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'Confirm Password',
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true,
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(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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serverUrl(),
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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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return;
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}
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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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.then((dynamic) {
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Navigator.of(context).popUntil((route) => route.isFirst);
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}).catchError((error) {
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showMessage('Failed to signup to Capsule, please try again later', context);
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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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Widget input(
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TextEditingController textController,
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String hintText,
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bool password,
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String? Function(dynamic) validationFunction,
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) {
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return TextFormField(
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controller: textController,
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obscureText: password,
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enableSuggestions: false,
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autocorrect: false,
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decoration: InputDecoration(
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hintText: hintText,
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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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validator: validationFunction,
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);
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}
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Widget serverUrl() {
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if (!showUrlInput) {
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return
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Padding(
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padding: const EdgeInsets.only(top: 0, bottom: 10),
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child: Row(
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children: [
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SizedBox(
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height: 10,
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child: IconButton(
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onPressed: () {
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setState(() {
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showUrlInput = true;
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});
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},
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icon: Icon(
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Icons.edit,
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color: Theme.of(context).disabledColor,
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),
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splashRadius: 2,
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padding: const EdgeInsets.all(2),
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iconSize: 15,
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),
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),
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const SizedBox(width: 2),
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Column(
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children: [
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const SizedBox(height: 10),
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Text(
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'Server URL - $defaultServerUrl',
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style: TextStyle(
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color: Theme.of(context).disabledColor,
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fontSize: 12,
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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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if (_serverUrlController.text == '') {
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_serverUrlController.text = defaultServerUrl;
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}
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return input(
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_serverUrlController,
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'Server URL',
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false,
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(dynamic) {
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return null;
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},
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);
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}
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Future<SignupResponse> signUp() async {
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await MyProfile.setServerUrl(_serverUrlController.text);
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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(
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_passwordController.text,
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Uint8List.fromList(rsaPrivPem.codeUnits),
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);
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final resp = await http.post(
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await MyProfile.getServerUrl('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': _usernameController.text,
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'password': _passwordController.text,
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'confirm_password': _passwordConfirmController.text,
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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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}
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