fluffychat/lib/views/login.dart

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Dart
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import 'dart:async';
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import 'dart:math';
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import 'package:adaptive_dialog/adaptive_dialog.dart';
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import 'package:famedlysdk/famedlysdk.dart';
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import 'package:future_loading_dialog/future_loading_dialog.dart';
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import 'package:fluffychat/components/matrix.dart';
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import 'package:flushbar/flushbar_helper.dart';
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import 'package:flutter/material.dart';
import 'package:flutter_gen/gen_l10n/l10n.dart';
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import '../utils/platform_infos.dart';
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import '../app_config.dart';
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class Login extends StatefulWidget {
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@override
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_LoginState createState() => _LoginState();
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}
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class _LoginState extends State<Login> {
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final TextEditingController usernameController = TextEditingController();
final TextEditingController passwordController = TextEditingController();
String usernameError;
String passwordError;
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bool loading = false;
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bool showPassword = false;
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void login(BuildContext context) async {
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var matrix = Matrix.of(context);
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if (usernameController.text.isEmpty) {
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setState(() => usernameError = L10n.of(context).pleaseEnterYourUsername);
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} else {
setState(() => usernameError = null);
}
if (passwordController.text.isEmpty) {
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setState(() => passwordError = L10n.of(context).pleaseEnterYourPassword);
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} else {
setState(() => passwordError = null);
}
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if (usernameController.text.isEmpty || passwordController.text.isEmpty) {
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return;
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}
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setState(() => loading = true);
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try {
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await matrix.client.login(
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user: usernameController.text,
password: passwordController.text,
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initialDeviceDisplayName: PlatformInfos.clientName);
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} on MatrixException catch (exception) {
setState(() => passwordError = exception.errorMessage);
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return setState(() => loading = false);
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} catch (exception) {
setState(() => passwordError = exception.toString());
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return setState(() => loading = false);
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}
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if (mounted) setState(() => loading = false);
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}
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Timer _coolDown;
void _checkWellKnownWithCoolDown(String userId, BuildContext context) async {
_coolDown?.cancel();
_coolDown = Timer(
Duration(seconds: 1),
() => _checkWellKnown(userId, context),
);
}
void _checkWellKnown(String userId, BuildContext context) async {
setState(() => usernameError = null);
if (!userId.isValidMatrixId) return;
try {
final wellKnownInformations = await Matrix.of(context)
.client
.getWellKnownInformationsByUserId(userId);
final newDomain = wellKnownInformations.mHomeserver?.baseUrl;
if ((newDomain?.isNotEmpty ?? false) &&
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newDomain != Matrix.of(context).client.homeserver.toString()) {
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await showFutureLoadingDialog(
context: context,
future: () => Matrix.of(context).client.checkHomeserver(newDomain),
);
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setState(() => usernameError = null);
}
} catch (e) {
setState(() => usernameError = e.toString());
}
}
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void _passwordForgotten(BuildContext context) async {
final input = await showTextInputDialog(
context: context,
title: L10n.of(context).enterAnEmailAddress,
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okLabel: L10n.of(context).ok,
cancelLabel: L10n.of(context).cancel,
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useRootNavigator: false,
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textFields: [
DialogTextField(
hintText: L10n.of(context).enterAnEmailAddress,
keyboardType: TextInputType.emailAddress,
),
],
);
if (input == null) return;
final clientSecret = DateTime.now().millisecondsSinceEpoch.toString();
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final response = await showFutureLoadingDialog(
context: context,
future: () => Matrix.of(context).client.resetPasswordUsingEmail(
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input.single,
clientSecret,
sendAttempt++,
),
);
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if (response.error != null) return;
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final ok = await showOkAlertDialog(
context: context,
title: L10n.of(context).weSentYouAnEmail,
message: L10n.of(context).pleaseClickOnLink,
okLabel: L10n.of(context).iHaveClickedOnLink,
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useRootNavigator: false,
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);
if (ok == null) return;
final password = await showTextInputDialog(
context: context,
title: L10n.of(context).chooseAStrongPassword,
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okLabel: L10n.of(context).ok,
cancelLabel: L10n.of(context).cancel,
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useRootNavigator: false,
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textFields: [
DialogTextField(
hintText: '******',
obscureText: true,
minLines: 1,
maxLines: 1,
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),
],
);
if (password == null) return;
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final success = await showFutureLoadingDialog(
context: context,
future: () => Matrix.of(context).client.changePassword(
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password.single,
auth: AuthenticationThreePidCreds(
type: AuthenticationTypes.emailIdentity,
threepidCreds: [
ThreepidCreds(
sid: (response as RequestTokenResponse).sid,
clientSecret: clientSecret,
),
],
),
),
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);
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if (success.error == null) {
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FlushbarHelper.createSuccess(
message: L10n.of(context).passwordHasBeenChanged);
}
}
static int sendAttempt = 0;
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@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
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leading: loading ? Container() : BackButton(),
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elevation: 0,
title: Text(
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L10n.of(context).logInTo(Matrix.of(context)
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.client
.homeserver
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.toString()
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.replaceFirst('https://', '')),
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),
),
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body: Builder(builder: (context) {
return ListView(
padding: EdgeInsets.symmetric(
horizontal:
max((MediaQuery.of(context).size.width - 600) / 2, 0)),
children: <Widget>[
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Padding(
padding: const EdgeInsets.all(12.0),
child: TextField(
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readOnly: loading,
autocorrect: false,
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autofocus: true,
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onChanged: (t) => _checkWellKnownWithCoolDown(t, context),
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controller: usernameController,
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autofillHints: loading ? null : [AutofillHints.username],
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decoration: InputDecoration(
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prefixIcon: Icon(Icons.account_box_outlined),
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hintText:
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'@${L10n.of(context).username.toLowerCase()}:domain',
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errorText: usernameError,
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labelText: L10n.of(context).username),
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),
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),
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Padding(
padding: const EdgeInsets.all(12.0),
child: TextField(
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readOnly: loading,
autocorrect: false,
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autofillHints: loading ? null : [AutofillHints.password],
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controller: passwordController,
obscureText: !showPassword,
onSubmitted: (t) => login(context),
decoration: InputDecoration(
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prefixIcon: Icon(Icons.lock_outlined),
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hintText: '****',
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errorText: passwordError,
suffixIcon: IconButton(
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tooltip: L10n.of(context).showPassword,
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icon: Icon(showPassword
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? Icons.visibility_off_outlined
: Icons.visibility_outlined),
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onPressed: () =>
setState(() => showPassword = !showPassword),
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),
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labelText: L10n.of(context).password),
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),
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),
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SizedBox(height: 12),
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Hero(
tag: 'loginButton',
child: Container(
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height: 56,
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padding: EdgeInsets.symmetric(horizontal: 12),
child: RaisedButton(
elevation: 7,
color: Theme.of(context).primaryColor,
shape: RoundedRectangleBorder(
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borderRadius: BorderRadius.circular(AppConfig.borderRadius),
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),
child: loading
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? LinearProgressIndicator()
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: Text(
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L10n.of(context).login.toUpperCase(),
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style: TextStyle(color: Colors.white, fontSize: 16),
),
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onPressed: loading ? null : () => login(context),
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),
),
),
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Center(
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child: TextButton(
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child: Text(
L10n.of(context).passwordForgotten,
style: TextStyle(
color: Colors.blue,
decoration: TextDecoration.underline,
),
),
onPressed: () => _passwordForgotten(context),
),
),
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],
);
}),
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);
}
}