diet-guard/app/lib/services/background_sync_service.dart
Krzysztof kuhy Rudnicki 957769ff0e
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Add budget-adherence calendar, streaks, and freely-editable synced budget
Both platforms gain a calendar tab/screen (green/yellow/red/not-logged
day coloring, logging/adherence streaks, year-to-date tally), and
tapping a day drills into that day's logged entries. This requires the
daily budget to become a normal, freely-editable value synced between
devices like the food log — replaces the previous chattr +i seal
(deliberately, per user decision) with plain last-edit-wins sync via a
new budget.json alongside food_log.json. The budget field defaults to
2200 kcal, starts read-only, and unlocks via an Edit/Save toggle on
both the PC gate's History tab and the phone app's Calendar screen.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016dHac1iYQKTMZEtL7xDJvA
2026-07-13 21:31:45 +02:00

59 lines
2.6 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:crdt_sync/crdt_sync.dart';
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/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 = GitHubClient(
owner: settings.owner,
repo: settings.repo,
token: settings.token,
httpClient: httpClient,
);
try {
await runSync(client);
return true;
} on Exception {
return false; // offline / transient GitHub error -> retry with backoff
} finally {
client.close();
}
}