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Šepot — end-to-end encrypted messenger

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Initial public release. Anonymous on-device identity (no phone number,
e-mail, or password), Signal-protocol cryptography (X3DH + PQXDH, Double
Ratchet, sealed sender) via libsignal, a metadata-minimizing relay,
group chats, disappearing messages, encrypted local storage, optional
Tor transport, and a UI localized into Czech, English, German, Russian,
and Italian.

Monorepo: Flutter client (app/), Rust relay + wire types (rust/),
protobuf definitions (proto/), self-host deploy (deploy/).

Licensed under AGPL-3.0 with an app-store distribution exception (§7).
This commit is contained in:
Julius Joska
2026-07-11 17:06:39 +02:00
commit 8081d98c67
309 changed files with 44102 additions and 0 deletions
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app/lib/features/groups/create_group_screen.dart
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import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:go_router/go_router.dart';
import 'package:sepot/core/l10n/error_messages.dart';
import 'package:sepot/core/l10n/l10n.dart';
import 'package:sepot/core/theme/app_theme.dart';
import 'package:sepot/models/contact.dart';
import 'package:sepot/models/group.dart';
import 'package:sepot/providers/contacts_provider.dart';
import 'package:sepot/providers/groups_provider.dart';
import 'package:sepot/widgets/avatar.dart';
/// Založení skupiny: jméno + výběr členů.
///
/// Vybrat jde jen kontakty s doručovací adresou (routing) — bez ní jim
/// fanout nemá kam doručit. Kontakty bez routingu jsou v seznamu vidět,
/// ale zašedlé s vysvětlením.
class CreateGroupScreen extends ConsumerStatefulWidget {
const CreateGroupScreen({super.key});
@override
ConsumerState<CreateGroupScreen> createState() => _CreateGroupScreenState();
}
class _CreateGroupScreenState extends ConsumerState<CreateGroupScreen> {
final _nameController = TextEditingController();
final _selected = <String>{};
var _creating = false;
@override
void dispose() {
_nameController.dispose();
super.dispose();
}
bool _hasRouting(Contact c) =>
c.publicIdentity.accountId != null &&
c.publicIdentity.deliveryAddress != null;
Future<void> _create(List<Contact> contacts) async {
final name = _nameController.text.trim();
if (name.isEmpty || _selected.isEmpty || _creating) return;
setState(() => _creating = true);
try {
final members =
contacts.where((c) => _selected.contains(c.id)).toList();
final group =
await ref.read(groupsProvider.notifier).createGroup(name, members);
if (mounted) context.pushReplacement('/conversation/${group.id}');
} catch (e) {
setState(() => _creating = false);
if (mounted) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text(context.l10n
.groupsCreateFailed(describeError(context.l10n, e))),
),
);
}
}
}
@override
Widget build(BuildContext context) {
final contactsAsync = ref.watch(contactsProvider);
final contacts = (contactsAsync.valueOrNull ?? [])
.where((c) => !c.blocked)
.toList();
final canCreate = _nameController.text.trim().isNotEmpty &&
_selected.isNotEmpty &&
!_creating;
return Scaffold(
appBar: AppBar(
title: Text(context.l10n.groupsNewGroupTitle),
actions: [
TextButton(
onPressed: canCreate ? () => _create(contacts) : null,
child: _creating
? const SizedBox(
width: 18,
height: 18,
child: CircularProgressIndicator(
strokeWidth: 2, color: SepotColors.ember),
)
: Text(context.l10n.groupsCreateAction),
),
],
),
body: Column(
children: [
Padding(
padding: const EdgeInsets.all(16),
child: TextField(
controller: _nameController,
maxLength: 64,
decoration: InputDecoration(
labelText: context.l10n.groupsNameHint,
counterText: '',
prefixIcon: const Icon(Icons.group_rounded,
color: SepotColors.textMuted),
),
onChanged: (_) => setState(() {}),
),
),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 16),
child: Row(
children: [
Text(
context.l10n.groupsMembersCounter(
_selected.length, Group.maxMembers - 1),
style: const TextStyle(
color: SepotColors.textSecondary, fontSize: 13),
),
],
),
),
const SizedBox(height: 4),
Expanded(
child: contacts.isEmpty
? Center(
child: Padding(
padding: const EdgeInsets.all(32),
child: Text(
context.l10n.groupsEmptyContactsHint,
textAlign: TextAlign.center,
style: const TextStyle(
color: SepotColors.textSecondary),
),
),
)
: ListView.builder(
itemCount: contacts.length,
itemBuilder: (context, index) {
final c = contacts[index];
final routable = _hasRouting(c);
final checked = _selected.contains(c.id);
return CheckboxListTile(
value: checked,
onChanged: routable
? (v) => setState(() {
if (v == true) {
if (_selected.length <
Group.maxMembers - 1) {
_selected.add(c.id);
}
} else {
_selected.remove(c.id);
}
})
: null,
secondary: SepotAvatar(name: c.displayName, size: 40),
title: Text(
c.displayName,
style: TextStyle(
color: routable
? SepotColors.textPrimary
: SepotColors.textMuted,
),
),
subtitle: routable
? null
: Text(
context.l10n.groupsMemberMissingAddress,
style: const TextStyle(
fontSize: 12,
color: SepotColors.textMuted),
),
activeColor: SepotColors.ember,
controlAffinity: ListTileControlAffinity.trailing,
);
},
),
),
],
),
);
}
}