mirror of
https://github.com/kuhyx/diet-guard.git
synced 2026-11-11 22:13:53 +01:00
Krzysztof kuhy Rudnicki
802ee0fe6d
Flutter's Linux embedder manages ~20fps at 3840x2160 -- measured on a stock `flutter create` counter app, so it is the toolkit rather than this code -- where the same Dart rendered by Chrome sustains ~144fps (evidence in ~/todo/docs/desktop-performance-findings.md). The desktop target therefore becomes a Flutter *web* build; Android is untouched. `dart:io` does not fail a web *compile* -- it resolves to a stub that throws at runtime -- so every platform edge moves behind a conditional export rather than being discovered later as a blank white window: - storage: `document_store*.dart`, files on Android and IndexedDB in the browser (mirrored to the desktop wrapper, which is what makes a wiped Chrome profile recoverable). Document names stay the exact pre-web filenames so an installed phone keeps reading its existing log. - photos: `blob_store*.dart` plus `attached_image*.dart`, since `Image.file` cannot resolve an IndexedDB key. The picker itself has web support; what changed is the storage and display model. Camera *capture* is genuinely lost on desktop -- and photos never crossed devices anyway, `imagePath` being stripped before push. - scheduling: `background_tasks*.dart`. A browser has no WorkManager equivalent -- a closed tab runs nothing -- so the desktop runs an in-page 5-minute check while its window is open. That loses nothing on the PC, where `diet-guard-gate.timer` already locks the screen on an unlogged slot, which is strictly stronger than a notification. - notifications: `notification_backend*.dart`, the browser Notifications API in place of flutter_local_notifications. - the GitHub token: `token_vault*.dart`. On web it is *not* held by the browser at all -- flutter_secure_storage's web backend is WebCrypto-wrapped localStorage with the wrap key beside the ciphertext, which is obfuscation, not encryption at rest -- so the desktop wrapper owns it and proxies the API (`github_client_factory*.dart`). `Platform.isAndroid` itself throws on web, so every platform branch now tests `kIsWeb` first; the battery-optimization row (permission_handler, no web implementation) is hidden off Android. The desktop pushes under device id `desktop`, not `phone`: sharing an id would have made the two devices overwrite each other's pushed log on every tick. The Python side enumerates device directories generically, so it needs no change. Tests move onto the same seams -- the file-backed stores keep the atomicity and unreadable-file guarantees where they belong. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
54 lines
2.5 KiB
Dart
54 lines
2.5 KiB
Dart
/// Connectivity-gated background push: the offline backstop for the
|
|
/// immediate-push-on-log behaviour. When a meal is logged while the device is
|
|
/// offline the in-process auto-sync fails silently; a WorkManager one-off task
|
|
/// with a `NetworkType.connected` constraint (enqueued on every log) fires on
|
|
/// reconnect and uploads the log without the app being reopened.
|
|
library;
|
|
|
|
import 'package:diet_guard_app/services/app_settings_service.dart';
|
|
import 'package:diet_guard_app/services/foodbank_service.dart';
|
|
import 'package:diet_guard_app/services/github_client_factory.dart';
|
|
import 'package:diet_guard_app/services/log_storage_service.dart';
|
|
import 'package:diet_guard_app/services/sync_service.dart';
|
|
import 'package:diet_guard_app/services/sync_settings.dart';
|
|
import 'package:http/http.dart' as http;
|
|
|
|
/// Unique WorkManager task name for the connectivity-gated push.
|
|
const String syncPushTaskName = 'diet_guard.sync_push';
|
|
|
|
/// Loads sync settings and pushes the local log, returning WorkManager's
|
|
/// success flag: `true` when there was nothing to push or the push
|
|
/// succeeded, `false` to ask WorkManager to retry (with backoff) after a
|
|
/// transient failure -- an offline moment or a GitHub hiccup.
|
|
///
|
|
/// Extracted from the WorkManager dispatcher so it is unit-testable without
|
|
/// the real plugin (which only runs as a background isolate on-device),
|
|
/// exactly like [checkAndNotify]. [httpClient] is injectable for the same
|
|
/// reason. The service singletons are (re)initialised here because a fresh
|
|
/// background isolate has none; [LogStorageService.init] is idempotent, so
|
|
/// this is a no-op when a test has already pointed it at a temp dir.
|
|
/// [AppSettingsService.init] must run too: [runSync] now also syncs the
|
|
/// budget, and applies a merge winner via `AppSettingsService.instance`,
|
|
/// which throws if the singleton was never initialised in this isolate.
|
|
Future<bool> backgroundSyncPush({http.Client? httpClient}) async {
|
|
await LogStorageService.init();
|
|
await FoodBankService.init();
|
|
await AppSettingsService.init();
|
|
final SyncSettings settings;
|
|
try {
|
|
settings = await SyncSettings.load();
|
|
} on Exception {
|
|
return false; // couldn't read config in-isolate; let WorkManager retry
|
|
}
|
|
if (!settings.isConfigured) return true; // nothing to push; don't retry
|
|
final client = createGitHubClient(settings, httpClient: httpClient);
|
|
try {
|
|
await runSync(client);
|
|
return true;
|
|
} on Exception {
|
|
return false; // offline / transient GitHub error -> retry with backoff
|
|
} finally {
|
|
client.close();
|
|
}
|
|
}
|