Šepot — end-to-end encrypted messenger

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).
2026-07-11 17:06:39 +02:00
commit 8081d98c67
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+import 'package:sepot/core/constants/app_constants.dart';
+import 'package:sepot/core/errors.dart';
+import 'package:sepot/core/storage/secure_storage.dart' show DecoyPinConflict;
+import 'package:sepot/l10n/generated/app_localizations.dart';
+
+/// Přeloží chybu na větu pro uživatele.
+///
+/// Typované chyby (`SepotUserError`, `DecoyPinConflict`) mají vlastní
+/// lokalizované hlášky; cokoli neznámého spadne do obecné hlášky
+/// s technickým popisem — radši ošklivá pravda než němé selhání.
+String describeError(AppLocalizations l10n, Object error) => switch (error) {
+      TrustRootChangedError() => l10n.errorTrustRootChanged,
+      RelayUnavailableError() => l10n.errorRelayUnavailable,
+      AttachmentTooLargeError(:final maxMb) =>
+        l10n.errorAttachmentTooLarge(maxMb),
+      GroupNeedsMemberError() => l10n.errorGroupNeedsMember,
+      GroupTooLargeError(:final maxMembers) =>
+        l10n.errorGroupMaxMembers(maxMembers),
+      MemberNoDeliveryAddressError(:final displayName) =>
+        l10n.errorMemberNoDeliveryAddress(displayName),
+      ContactNoDeliveryAddressError() => l10n.errorContactNoDeliveryAddress,
+      IdentityKeyMismatchError() => l10n.errorIdentityKeyMismatch,
+      MnemonicWordCountError(:final count, :final expected) =>
+        l10n.restoreErrorMnemonicWordCount(count, expected),
+      MnemonicInvalidError(:final detail) =>
+        l10n.restoreErrorInvalidMnemonic(detail),
+      BackupCorruptedError() => l10n.backupErrorCorruptedFile,
+      BackupUnknownFormatError() => l10n.backupErrorUnknownFormat,
+      BackupWrongIdentityError() => l10n.backupErrorWrongIdentity,
+      ContactAlreadyExistsError() => l10n.contactsErrorAlreadyExists,
+      ReportEmptyDescriptionError() => l10n.reportErrorEmptyDescription,
+      ReportConnectionError() =>
+        l10n.reportErrorConnection(AppConstants.supportEmail),
+      ReportRateLimitedError() =>
+        l10n.reportErrorRateLimited(AppConstants.supportEmail),
+      ReportServerError(:final statusCode) =>
+        l10n.reportErrorServer(statusCode, AppConstants.supportEmail),
+      DecoyPinConflict() => l10n.settingsDecoyPinConflict,
+      _ => l10n.errorGeneric(error.toString()),
+    };
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+import 'dart:ui';
+
+import 'package:flutter/widgets.dart';
+import 'package:sepot/l10n/generated/app_localizations.dart';
+
+export 'package:sepot/l10n/generated/app_localizations.dart';
+
+/// Zkratka pro přístup k lokalizovaným textům: `context.l10n.klic`.
+extension L10nX on BuildContext {
+  AppLocalizations get l10n => AppLocalizations.of(this);
+}
+
+/// Lokalizace mimo widget tree (notifikace, headless push start).
+///
+/// Preferuje ruční volbu jazyka (`override`, typicky
+/// `LocaleNotifier.readStored()`), jinak jazyk systému; nepodporovaný
+/// jazyk spadne na angličtinu — stejné pořadí jako `supportedLocales`.
+AppLocalizations l10nFor(Locale? override) {
+  final locale = override ?? PlatformDispatcher.instance.locale;
+  final lang = Locale(locale.languageCode);
+  final supported = AppLocalizations.delegate.isSupported(lang);
+  return lookupAppLocalizations(supported ? lang : const Locale('en'));
+}