Nexus/nexus
Nexus/nexus
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better login flow

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Co-authored-by: Henry-Hiles <henry@henryhiles.com>
This commit is contained in:
istalri 2026-06-05 17:28:53 -04:00 • committed by Henry-Hiles
commit 27dca24889
Signed by: Henry-Hiles
SSH key fingerprint: SHA256:VKQUdS31Q90KvX7EkKMHMBpUspcmItAh86a+v7PGiIs
10 changed files with 292 additions and 328 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;
}

2
lib/helpers/required_validator_helper.dart Normal file
View file

@ -0,0 +1,2 @@
String? requiredValidator(String? value) =>
value == null || value.isEmpty ? "This field is required" : 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 {

248
lib/pages/login_page.dart
View file

@ -1,205 +1,95 @@
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/widgets/appbar.dart";
import "package:nexus/widgets/divider_text.dart";
import "package:nexus/widgets/loading.dart";
import "package:nexus/helpers/required_validator_helper.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 isLoading = useState(false);
final homeserver = useState<String?>(null);
final launch = ref.watch(LaunchHelper.provider).launchUrl;
Future<void> setHomeserver(Uri? newHomeserver) async {
isLoading.value = true;
homeserver.value = newHomeserver == null
? null
: await client.discoverHomeserver(
newHomeserver.hasScheme
? newHomeserver
: Uri.https(newHomeserver.path),
);
if (homeserver.value == null && context.mounted) {
ScaffoldMessenger.of(context).showSnackBar(
.new(
content: Text(
"Homeserver verification failed. Is your homeserver down?",
style: TextStyle(color: theme.colorScheme.onErrorContainer),
),
backgroundColor: theme.colorScheme.errorContainer,
),
);
}
isLoading.value = false;
}
final homeserverUrl = useTextEditingController();
final username = useTextEditingController();
final password = useTextEditingController();
final inputError = useState<String?>(null);
final formKey = useRef(GlobalKey<FormState>());
Future<void> tryLogin() async {
isLoading.value = true;
try {
if (formKey.value.currentState?.validate() != true) return;
final error = await client.login(
.new(
username: username.text,
password: password.text,
homeserverUrl: homeserver.origin,
),
);
if (error != null) {
inputError.value = error;
isLoading.value = false;
} else {
if (context.mounted) Navigator.of(context).pop();
}
} finally {
isLoading.value = false;
}
}
return Scaffold(
appBar: Appbar(),
body: Center(
child: ConstrainedBox(
constraints: .new(maxWidth: 600),
child: ListView(
padding: .symmetric(horizontal: 16, vertical: 64),
appBar: Appbar(
leading: IconButton(
icon: Icon(Icons.arrow_back),
onPressed: Navigator.of(context).pop,
),
),
body: AlertDialog(
title: Text("Login to ${homeserver.host}"),
content: Form(
key: formKey.value,
child: Column(
mainAxisSize: .min,
crossAxisAlignment: .start,
children: [
Row(
children: [
SvgPicture.asset("assets/icon.svg", width: 128),
SizedBox(width: 12),
Expanded(
child: Column(
crossAxisAlignment: .start,
children: [
Text("Nexus", style: theme.textTheme.displayMedium),
Text(
"A Simple Matrix Client",
style: theme.textTheme.headlineMedium,
overflow: .ellipsis,
),
],
),
),
],
TextFormField(
autofocus: true,
textInputAction: .next,
autovalidateMode: .onUserInteraction,
validator: requiredValidator,
decoration: .new(label: Text("Username")),
controller: username,
),
Padding(padding: .symmetric(vertical: 12), child: Divider()),
DividerText("Enter a homeserver domain:"),
Row(
spacing: 8,
children: [
Expanded(
child: TextField(
controller: homeserverUrl,
decoration: .new(
labelText: "Homeserver URL (e.g. matrix.org)",
),
),
),
IconButton.filled(
tooltip: "Confirm homeserver choice",
onPressed: isLoading.value
? null
: () => setHomeserver(.tryParse(homeserverUrl.text)),
icon: Icon(Icons.check),
),
],
SizedBox(height: 12),
TextFormField(
textInputAction: .done,
decoration: .new(
label: Text("Password"),
errorText: inputError.value,
errorMaxLines: 5,
),
autovalidateMode: .onUserInteraction,
validator: requiredValidator,
controller: password,
obscureText: true,
),
DividerText("Or, choose from some popular homeservers:"),
...(<Homeserver>[
.new(
name: "Matrix.org",
description:
"The Matrix.org Foundation offers the matrix.org homeserver as an easy entry point for anyone wanting to try out Matrix.",
url: .https("matrix.org"),
iconUrl:
"https://raw.githubusercontent.com/element-hq/logos/refs/heads/master/matrix/matrix-favicon${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"),
),
],
],
),
),
actions: [
TextButton(
onPressed: isLoading.value ? null : tryLogin,
child: Text("Sign In"),
),
],
),
);
}

169
lib/pages/select_server_page.dart Normal file
View file

@ -0,0 +1,169 @@
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";
class SelectServerPage extends HookConsumerWidget {
const SelectServerPage({super.key});
@override
Widget build(BuildContext context, WidgetRef ref) {
final theme = Theme.of(context);
final launch = ref.watch(LaunchHelper.provider).launchUrl;
final isLoading = useState(false);
final homeserverUrl = useTextEditingController();
Future<void> setHomeserver(Uri? newHomeserver) async {
isLoading.value = true;
try {
if (newHomeserver?.hasScheme == false) {
newHomeserver = Uri.https(newHomeserver!.path);
}
final newUrl = newHomeserver == null
? null
: await ref
.watch(ClientController.provider.notifier)
.discoverHomeserver(newHomeserver);
if (context.mounted) {
if (newUrl == null) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text(
"Homeserver verification failed. Is your homeserver down?",
style: .new(color: theme.colorScheme.onErrorContainer),
),
backgroundColor: theme.colorScheme.errorContainer,
),
);
} else {
await Navigator.of(context).push(
MaterialPageRoute(builder: (_) => LoginPage(homeserver: newUrl)),
);
}
}
} finally {
isLoading.value = false;
}
}
return Scaffold(
appBar: Appbar(),
body: Center(
child: ConstrainedBox(
constraints: .new(maxWidth: 600),
child: ListView(
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(
textInputAction: .done,
autofocus: true,
onSubmitted: (text) => setHomeserver(.tryParse(text)),
controller: homeserverUrl,
decoration: .new(
labelText: "Homeserver URL",
hintText: "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(
enabled: !isLoading.value,
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),
),
),
),
)),
TextButton(
onPressed: () => launch(.https("servers.joinmatrix.org")),
child: Text("See more homeservers..."),
),
],
),
),
),
);
}
}

94
lib/pages/verify_page.dart
View file

@ -3,7 +3,7 @@ import "package:flutter_hooks/flutter_hooks.dart";
import "package:hooks_riverpod/hooks_riverpod.dart";
import "package:nexus/controllers/client_controller.dart";
import "package:nexus/widgets/appbar.dart";
import "package:nexus/widgets/form_text_input.dart";
import "package:nexus/helpers/required_validator_helper.dart";
class VerifyPage extends HookConsumerWidget {
const VerifyPage({super.key});
@ -11,70 +11,56 @@ class VerifyPage extends HookConsumerWidget {
@override
Widget build(BuildContext context, WidgetRef ref) {
final passphraseController = useTextEditingController();
final isVerifying = useState(false);
final isLoading = useState(false);
final inputError = useState<String?>(null);
final formKey = useRef(GlobalKey<FormState>());
return Scaffold(
appBar: Appbar(),
body: AlertDialog(
title: Text("Verify"),
content: Column(
mainAxisSize: .min,
crossAxisAlignment: .start,
children: [
Text(
"Enter your recovery key or passphrase below to unlock encrypted events.\nYour passphrase is usually not the same as your password.",
),
SizedBox(height: 12),
FormTextInput(
required: false,
autofocus: true,
capitalize: true,
controller: passphraseController,
obscure: true,
title: "Recovery Key or Passphrase",
),
],
content: Form(
key: formKey.value,
child: Column(
mainAxisSize: .min,
crossAxisAlignment: .start,
children: [
Text(
"Enter your recovery key or passphrase below to unlock encrypted events.\nYour passphrase is usually not the same as your password.",
),
SizedBox(height: 12),
TextFormField(
autofocus: true,
controller: passphraseController,
textInputAction: .done,
autovalidateMode: .onUserInteraction,
validator: requiredValidator,
obscureText: true,
decoration: .new(
label: Text("Recovery Key or Passphrase"),
errorText: inputError.value,
),
),
],
),
),
actions: [
TextButton(
onPressed: isVerifying.value
onPressed: isLoading.value
? null
: () async {
final scaffoldMessenger = ScaffoldMessenger.of(context);
final snackbar = scaffoldMessenger.showSnackBar(
.new(
content: Text(
"Attempting to verify with recovery key...",
),
duration: .new(days: 999),
),
);
isLoading.value = true;
isVerifying.value = true;
final error = await ref
.watch(ClientController.provider.notifier)
.verify(passphraseController.text);
snackbar.close();
if (error != null) {
isVerifying.value = false;
if (context.mounted) {
scaffoldMessenger.showSnackBar(
.new(
backgroundColor: Theme.of(
context,
).colorScheme.errorContainer,
content: Text(
"Verification failed. Is your passphrase correct?\nError: $error",
style: .new(
color: Theme.of(
context,
).colorScheme.onErrorContainer,
),
),
),
);
try {
if (formKey.value.currentState?.validate() != true) {
return;
}
inputError.value = await ref
.watch(ClientController.provider.notifier)
.verify(passphraseController.text);
} finally {
isLoading.value = false;
}
},
child: Text("Verify"),

81
lib/widgets/form_text_input.dart
View file

@ -1,81 +0,0 @@
import "package:flutter/material.dart";
import "package:flutter/services.dart";
class FormTextInput extends StatelessWidget {
final List<String? Function(String value)> extraValidators;
final TextEditingController? controller;
final TextInputType keyboardType;
final String? initialValue;
final bool readOnly;
final bool obscure;
final String? title;
final int? minLines;
final int? maxLength;
final bool outlined;
final int? maxLines;
final bool capitalize;
final bool required;
final bool autocorrect;
final void Function()? onTap;
final Widget? trailing;
final InputBorder? border;
final List<TextInputFormatter>? formatters;
final bool autofocus;
const FormTextInput({
super.key,
this.border,
this.controller,
this.autofocus = false,
this.title,
this.obscure = false,
this.readOnly = false,
this.extraValidators = const [],
this.keyboardType = TextInputType.text,
this.initialValue,
this.minLines,
this.capitalize = false,
this.maxLength,
this.formatters,
this.maxLines = 1,
this.outlined = true,
this.trailing,
this.onTap,
this.autocorrect = true,
this.required = true,
});
@override
Widget build(BuildContext context) => TextFormField(
autofocus: autofocus,
controller: controller,
keyboardType: keyboardType,
readOnly: readOnly,
minLines: minLines,
maxLines: maxLines,
maxLength: maxLength,
inputFormatters: formatters,
textCapitalization: capitalize ? .sentences : .none,
initialValue: initialValue,
autocorrect: autocorrect,
obscureText: obscure,
onTap: onTap,
decoration: .new(
labelText: title,
border: border ?? (outlined ? null : const UnderlineInputBorder()),
suffixIcon: trailing,
),
validator: (value) {
if ((value?.isEmpty ?? true) && required) {
return "This field is required";
}
for (final validator in extraValidators) {
final reason = validator(value!);
if (reason != null) return reason;
}
return null;
},
);
}

7
lib/widgets/join_dialog.dart
View file

@ -6,7 +6,6 @@ import "package:nexus/controllers/client_controller.dart";
import "package:nexus/controllers/key_controller.dart";
import "package:nexus/controllers/spaces_controller.dart";
import "package:nexus/helpers/extensions/link_to_mention.dart";
import "package:nexus/widgets/form_text_input.dart";
class JoinDialog extends HookWidget {
final WidgetRef ref;
@ -23,11 +22,9 @@ class JoinDialog extends HookWidget {
children: [
Text("Enter the room alias, Matrix URI, or Matrix.to link."),
SizedBox(height: 12),
FormTextInput(
required: false,
capitalize: true,
TextField(
controller: roomAlias,
title: "#room:server",
decoration: .new(hintText: "#room:server"),
),
],
),

19
lib/widgets/room_chat.dart
View file

@ -22,7 +22,6 @@ import "package:nexus/widgets/member_list.dart";
import "package:nexus/widgets/room_appbar.dart";
import "package:nexus/widgets/flash_wrapper.dart";
import "package:nexus/widgets/error_dialog.dart";
import "package:nexus/widgets/form_text_input.dart";
import "package:nexus/main.dart";
import "package:nexus/widgets/loading.dart";
import "package:super_sliver_list/super_sliver_list.dart";
@ -288,11 +287,12 @@ class RoomChat extends HookConsumerWidget {
"Are you sure you want to delete this message? This can not be reversed.",
),
SizedBox(height: 12),
FormTextInput(
required: false,
capitalize: true,
TextField(
controller: deleteReasonController,
title: "Reason for deletion (optional)",
textCapitalization: .sentences,
decoration: .new(
labelText: "Reason for deletion (optional)",
),
),
],
),
@ -340,11 +340,12 @@ class RoomChat extends HookConsumerWidget {
),
SizedBox(height: 12),
FormTextInput(
required: false,
capitalize: true,
TextField(
controller: reasonController,
title: "Reason for report (optional)",
textCapitalization: .sentences,
decoration: .new(
labelText: "Reason for report (optional)",
),
),
],
),

10
lib/widgets/user_popover.dart
View file

@ -14,7 +14,6 @@ import "package:nexus/models/requests/membership_action.dart";
import "package:nexus/widgets/avatar_or_hash.dart";
import "package:nexus/main.dart";
import "package:nexus/widgets/expandable_image.dart";
import "package:nexus/widgets/form_text_input.dart";
class UserPopover extends ConsumerWidget {
final MembershipContent member;
@ -41,11 +40,12 @@ class UserPopover extends ConsumerWidget {
children: [
Text("Are you sure you want to ${action.name} $userId?"),
SizedBox(height: 12),
FormTextInput(
required: false,
capitalize: true,
TextField(
textCapitalization: .sentences,
controller: actionReasonController,
title: "Reason for ${action.name} (optional)",
decoration: .new(
labelText: "Reason for ${action.name} (optional)",
),
),
],
),