Nexus/nexus
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better login flow

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istalri 2026-06-05 16:44:07 -04:00 • committed by Henry-Hiles
commit 39a280833f
Signed by: Henry-Hiles
SSH key fingerprint: SHA256:VKQUdS31Q90KvX7EkKMHMBpUspcmItAh86a+v7PGiIs
4 changed files with 319 additions and 176 deletions
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4
lib/controllers/client_controller.dart
View file

@ -261,12 +261,12 @@ class ClientController extends AsyncNotifier<int> {
}
}
Future<String?> discoverHomeserver(Uri homeserver) async {
Future<Uri?> discoverHomeserver(Uri homeserver) async {
try {
final response = await _sendCommand("discover_homeserver", {
"user_id": "@fake-user:${homeserver.host}",
});
return response["m.homeserver"]?["base_url"];
return Uri.parse(response["m.homeserver"]?["base_url"]);
} catch (error) {
return null;
}

4
lib/main.dart
View file

@ -11,7 +11,7 @@ import "package:nexus/controllers/shared_prefs_controller.dart";
import "package:nexus/helpers/extensions/better_when.dart";
import "package:nexus/helpers/extensions/scheme_to_theme.dart";
import "package:nexus/pages/chat_page.dart";
import "package:nexus/pages/login_page.dart";
import "package:nexus/pages/select_server_page.dart";
import "package:nexus/pages/verify_page.dart";
import "package:nexus/widgets/error_dialog.dart";
import "package:nexus/widgets/loading.dart";
@ -124,7 +124,7 @@ class App extends StatelessWidget {
}
if (!clientState.isLoggedIn) {
return LoginPage();
return SelectServerPage();
} else if (!clientState.isVerified) {
return VerifyPage();
} else {

277
lib/pages/login_page.dart
View file

@ -1,206 +1,135 @@
import "package:flutter/material.dart";
import "package:flutter_hooks/flutter_hooks.dart";
import "package:flutter_svg/flutter_svg.dart";
import "package:hooks_riverpod/hooks_riverpod.dart";
import "package:nexus/controllers/client_controller.dart";
import "package:nexus/helpers/launch_helper.dart";
import "package:nexus/models/homeserver.dart";
import "package:nexus/models/requests/login_request.dart";
import "package:nexus/widgets/appbar.dart";
import "package:nexus/widgets/divider_text.dart";
import "package:nexus/widgets/loading.dart";
class LoginPage extends HookConsumerWidget {
const LoginPage({super.key});
final Uri homeserver;
const LoginPage({super.key, required this.homeserver});
@override
Widget build(BuildContext context, WidgetRef ref) {
final theme = Theme.of(context);
final client = ref.watch(ClientController.provider.notifier);
final isLoggingIn = useState(false);
final hasError = useState(false);
final passwordFocusNode = useFocusNode();
final isLoading = useState(false);
final homeserver = useState<String?>(null);
final theme = Theme.of(context);
final launch = ref.watch(LaunchHelper.provider).launchUrl;
final username = useTextEditingController();
final password = useTextEditingController();
Future<void> setHomeserver(Uri? newHomeserver) async {
isLoading.value = true;
Future<void> tryLogin() async {
if (isLoggingIn.value) return;
isLoggingIn.value = true;
hasError.value = false;
homeserver.value = newHomeserver == null
? null
: await client.discoverHomeserver(
newHomeserver.hasScheme
? newHomeserver
: Uri.https(newHomeserver.path),
);
final error = await client.login(
LoginRequest(
username: username.text,
password: password.text,
homeserverUrl: homeserver.origin,
),
);
if (homeserver.value == null && context.mounted) {
if (!context.mounted) return;
if (error != null) {
hasError.value = true;
ScaffoldMessenger.of(context).showSnackBar(
.new(
SnackBar(
content: Text(
"Homeserver verification failed. Is your homeserver down?",
"Login failed. Is your password right?\nError: $error",
style: TextStyle(color: theme.colorScheme.onErrorContainer),
),
backgroundColor: theme.colorScheme.errorContainer,
),
);
isLoggingIn.value = false;
} else {
Navigator.of(context).pop();
}
isLoading.value = false;
passwordFocusNode.requestFocus();
isLoggingIn.value = false;
}
final homeserverUrl = useTextEditingController();
final username = useTextEditingController();
final password = useTextEditingController();
return Scaffold(
appBar: Appbar(),
body: Center(
child: ConstrainedBox(
constraints: .new(maxWidth: 600),
child: ListView(
padding: .symmetric(horizontal: 16, vertical: 64),
children: [
Row(
children: [
SvgPicture.asset("assets/icon.svg", width: 128),
SizedBox(width: 12),
Expanded(
child: Column(
crossAxisAlignment: .start,
children: [
Text("Nexus", style: theme.textTheme.displayMedium),
Text(
"A Simple Matrix Client",
style: theme.textTheme.headlineMedium,
overflow: .ellipsis,
),
],
),
),
],
),
Padding(padding: .symmetric(vertical: 12), child: Divider()),
DividerText("Enter a homeserver domain:"),
Row(
spacing: 8,
children: [
Expanded(
child: TextField(
controller: homeserverUrl,
decoration: .new(
labelText: "Homeserver URL (e.g. matrix.org)",
),
),
),
IconButton.filled(
tooltip: "Confirm homeserver choice",
onPressed: isLoading.value
? null
: () => setHomeserver(.tryParse(homeserverUrl.text)),
icon: Icon(Icons.check),
),
],
),
DividerText("Or, choose from some popular homeservers:"),
...(<Homeserver>[
.new(
name: "Matrix.org",
description:
"The Matrix.org Foundation offers the matrix.org homeserver as an easy entry point for anyone wanting to try out Matrix.",
url: .https("matrix.org"),
iconUrl:
"https://raw.githubusercontent.com/element-hq/logos/refs/heads/master/matrix/matrix-favicon${Theme.brightnessOf(context) == Brightness.dark ? "-white" : ""}.png",
),
.new(
name: "Federated Nexus",
description:
"Federated Nexus is a community resource hosting multiple FOSS (especially federated) services, including Matrix and Forgejo. By the same developers who made Nexus client.",
url: .https("federated.nexus"),
iconUrl: "https://federated.nexus/images/icon.png",
),
.new(
name: "Unredacted",
description:
"Unredacted is a 501(c)(3) non-profit organization that builds Internet infrastructure and services to help people evade censorship and protect their right to privacy.",
url: .https("unredacted.org", "services/si/matrix"),
iconUrl: "https://unredacted.org/favicon.ico",
),
].map(
(homeserver) => Card(
child: ListTile(
title: Text(homeserver.name),
leading: Image.network(
homeserver.iconUrl,
errorBuilder: (_, _, _) => SizedBox.shrink(),
height: 32,
),
subtitle: Text(homeserver.description),
onTap: isLoading.value
? null
: () => setHomeserver(homeserver.url),
trailing: IconButton(
tooltip: "Launch homeserver info page",
onPressed: () => launch(homeserver.url),
icon: Icon(Icons.info_outline),
),
),
),
)),
SizedBox(height: 8),
TextButton(
onPressed: () => launch(.https("servers.joinmatrix.org")),
child: Text("See more homeservers..."),
),
if (isLoading.value)
Padding(padding: .only(top: 32), child: Loading())
else if (homeserver.value != null) ...[
DividerText("Then, sign in:"),
SizedBox(height: 4),
TextField(
decoration: .new(label: Text("Username")),
controller: username,
),
SizedBox(height: 12),
TextField(
decoration: .new(label: Text("Password")),
controller: password,
obscureText: true,
),
SizedBox(height: 12),
ElevatedButton(
onPressed: () async {
isLoading.value = true;
final error = await client.login(
.new(
username: username.text,
password: password.text,
homeserverUrl: homeserver.value!,
),
);
if (error != null && context.mounted) {
ScaffoldMessenger.of(context).showSnackBar(
.new(
content: Text(
"Login failed. Is your password right?\nError: $error",
style: .new(
color: theme.colorScheme.onErrorContainer,
),
),
backgroundColor: theme.colorScheme.errorContainer,
),
);
isLoading.value = false;
}
},
child: Text("Sign In"),
),
],
],
),
appBar: Appbar(
leading: IconButton(
icon: Icon(Icons.arrow_back),
onPressed: Navigator.of(context).pop,
),
),
body: AlertDialog(
title: Text("Login to ${homeserver.host}"),
content: Column(
mainAxisSize: MainAxisSize.min,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text("Enter your login credentials:"),
SizedBox(height: 12),
TextField(
autofocus: true,
textInputAction: TextInputAction.next,
onChanged: (newVal) {
if (hasError.value) {
hasError.value = false;
}
},
decoration: InputDecoration(
label: Text("Username"),
focusedBorder: hasError.value
? OutlineInputBorder(
borderSide: BorderSide(color: theme.colorScheme.error),
)
: null,
enabledBorder: hasError.value
? OutlineInputBorder(
borderSide: BorderSide(color: theme.colorScheme.error),
)
: null,
),
controller: username,
),
SizedBox(height: 12),
TextField(
focusNode: passwordFocusNode,
textInputAction: TextInputAction.done,
onSubmitted: (_) => tryLogin(),
onChanged: (newVal) {
if (hasError.value) {
hasError.value = false;
}
},
selectAllOnFocus: true,
decoration: InputDecoration(
label: Text("Password"),
focusedBorder: hasError.value
? OutlineInputBorder(
borderSide: BorderSide(color: theme.colorScheme.error),
)
: null,
enabledBorder: hasError.value
? OutlineInputBorder(
borderSide: BorderSide(color: theme.colorScheme.error),
)
: null,
),
controller: password,
obscureText: true,
),
],
),
actions: [
TextButton(
onPressed: hasError.value ? null : tryLogin,
child: Text("Sign In"),
),
],
),
);
}
}

214
lib/pages/select_server_page.dart Normal file
View file

@ -0,0 +1,214 @@
import "package:flutter/material.dart";
import "package:flutter_hooks/flutter_hooks.dart";
import "package:flutter_svg/flutter_svg.dart";
import "package:hooks_riverpod/hooks_riverpod.dart";
import "package:nexus/controllers/client_controller.dart";
import "package:nexus/helpers/launch_helper.dart";
import "package:nexus/models/homeserver.dart";
import "package:nexus/pages/login_page.dart";
import "package:nexus/widgets/appbar.dart";
import "package:nexus/widgets/divider_text.dart";
import "package:nexus/widgets/loading.dart";
class SelectServerPage extends HookConsumerWidget {
const SelectServerPage({super.key});
@override
Widget build(BuildContext context, WidgetRef ref) {
final theme = Theme.of(context);
final client = ref.watch(ClientController.provider.notifier);
final hasError = useState(false);
final isLoading = useState(false);
final homeserverFocusNode = useFocusNode();
final launch = ref.watch(LaunchHelper.provider).launchUrl;
final homeserverUrl = useTextEditingController();
Future<void> setHomeserver(Uri? newHomeserver) async {
isLoading.value = true;
if (newHomeserver?.hasScheme == false) {
newHomeserver = Uri.https(newHomeserver!.path);
}
final newUrl = newHomeserver == null
? null
: await client.discoverHomeserver(newHomeserver);
if (context.mounted) {
if (newUrl == null) {
hasError.value = true;
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text(
"Homeserver verification failed. Is your homeserver down?",
style: TextStyle(color: theme.colorScheme.onErrorContainer),
),
backgroundColor: theme.colorScheme.errorContainer,
),
);
} else {
homeserverUrl.text = newHomeserver!.origin;
await Navigator.of(context).push(
MaterialPageRoute(builder: (_) => LoginPage(homeserver: newUrl)),
);
}
}
homeserverFocusNode.requestFocus();
isLoading.value = false;
}
return Scaffold(
appBar: Appbar(),
body: isLoading.value
? const Loading()
: Center(
child: ConstrainedBox(
constraints: BoxConstraints(maxWidth: 600),
child: Column(
children: [
Row(
children: [
SvgPicture.asset("assets/icon.svg", width: 128),
SizedBox(width: 12),
Expanded(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
"Nexus",
style: theme.textTheme.displayMedium,
),
Text(
"A Simple Matrix Client",
style: theme.textTheme.headlineMedium,
overflow: TextOverflow.ellipsis,
),
],
),
),
],
),
Padding(
padding: EdgeInsetsGeometry.symmetric(vertical: 12),
child: Divider(),
),
DividerText("Enter a homeserver domain:"),
Row(
spacing: 8,
children: [
Expanded(
child: TextField(
focusNode: homeserverFocusNode,
textInputAction: TextInputAction.done,
onSubmitted: (_) =>
setHomeserver(Uri.tryParse(homeserverUrl.text)),
onChanged: (newVal) {
if (hasError.value) {
hasError.value = false;
}
},
controller: homeserverUrl,
decoration: InputDecoration(
labelText: "Homeserver URL (e.g. matrix.org)",
hintText: "e.g. matrix.org",
focusedBorder: hasError.value
? OutlineInputBorder(
borderSide: BorderSide(
color: theme.colorScheme.error,
),
)
: null,
enabledBorder: hasError.value
? OutlineInputBorder(
borderSide: BorderSide(
color: theme.colorScheme.error,
),
)
: null,
),
),
),
IconButton.filled(
tooltip: "Confirm homeserver choice",
onPressed: isLoading.value || hasError.value
? null
: () => setHomeserver(
Uri.tryParse(homeserverUrl.text),
),
icon: Icon(Icons.check),
),
],
),
Expanded(
child: ListView(
padding: EdgeInsets.only(top: 12),
children: [
DividerText(
"Or, choose from some popular homeservers:",
),
...(<Homeserver>[
Homeserver(
name: "Matrix.org",
description:
"The Matrix.org Foundation offers the matrix.org homeserver as an easy entry point for anyone wanting to try out Matrix.",
url: Uri.https("matrix.org"),
iconUrl:
"https://raw.githubusercontent.com/element-hq/logos/refs/heads/master/matrix/matrix-favicon${Theme.brightnessOf(context) == Brightness.dark ? "-white" : ""}.png",
),
Homeserver(
name: "Federated Nexus",
description:
"Federated Nexus is a community resource hosting multiple FOSS (especially federated) services, including Matrix and Forgejo. By the same developers who made Nexus client.",
url: Uri.https("federated.nexus"),
iconUrl:
"https://federated.nexus/images/icon.png",
),
Homeserver(
name: "Unredacted",
description:
"Unredacted is a 501(c)(3) non-profit organization that builds Internet infrastructure and services to help people evade censorship and protect their right to privacy.",
url: Uri.https(
"unredacted.org",
"services/si/matrix",
),
iconUrl: "https://unredacted.org/favicon.ico",
),
].map(
(homeserver) => Card(
child: ListTile(
title: Text(homeserver.name),
leading: Image.network(
homeserver.iconUrl,
errorBuilder: (_, _, _) => SizedBox.shrink(),
height: 32,
),
subtitle: Text(homeserver.description),
onTap: isLoading.value
? null
: () => setHomeserver(homeserver.url),
trailing: IconButton(
tooltip: "Launch homeserver info page",
onPressed: () => launch(homeserver.url),
icon: Icon(Icons.info_outline),
),
),
),
)),
],
),
),
SizedBox(height: 5),
TextButton(
onPressed: () =>
launch(Uri.https("servers.joinmatrix.org")),
child: Text("See more homeservers..."),
),
],
),
),
),
);
}
}