453 lines
16 KiB
Dart
453 lines
16 KiB
Dart
import 'package:cloud_firestore/cloud_firestore.dart';
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import 'package:crypto/crypto.dart';
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import 'package:firebase_core/firebase_core.dart';
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import '../../core/version/app_identity.dart';
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import '../../database/database.dart';
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import '../auth/auth_service.dart';
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import 'r2_upload_service.dart';
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import 'sync_bundle_worker.dart';
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import 'sync_models.dart';
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import 'sync_provider.dart';
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class FirebaseSyncProvider implements SyncProvider {
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final AppDatabase _db;
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final AuthService _authService;
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final FirebaseFirestore? _firestore;
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final R2UploadService _r2UploadService;
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final SyncBundleWorker _bundleWorker;
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FirebaseSyncProvider({
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required AppDatabase db,
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required this._authService,
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FirebaseFirestore? firestore,
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R2UploadService? r2UploadService,
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SyncBundleWorker? bundleWorker,
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}) : _db = db,
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_firestore = firestore ?? _resolveFirestore(),
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_r2UploadService = r2UploadService ?? R2UploadService(),
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_bundleWorker = bundleWorker ?? SyncBundleWorker(db);
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static FirebaseFirestore? _resolveFirestore() {
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try {
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if (Firebase.apps.isNotEmpty) return FirebaseFirestore.instance;
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} catch (_) {}
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return null;
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}
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@override
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String get providerId => 'firebase';
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@override
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Future<bool> isAvailable() async {
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return _firestore != null;
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}
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@override
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Future<bool> requiresAuthentication() async {
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final user = _authService.currentUser;
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return user == null || user.isAnonymous;
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}
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@override
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Future<bool> isRideConfirmedInCloud(String remoteRideId) async {
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final result = await verifyCloudConfirmation(remoteRideId);
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return result.isConfirmed;
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}
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@override
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Future<CloudConfirmationResult> verifyCloudConfirmation(
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String remoteRideId,
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) async {
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final user = _authService.currentUser;
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if (user == null || user.isAnonymous) {
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return CloudConfirmationResult.unauthorized(
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remoteRideId: remoteRideId,
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message:
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'Sign in to MotorCloud is required to verify cloud ride status.',
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);
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}
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if (!await isAvailable()) {
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return CloudConfirmationResult.temporarilyUnverifiable(
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remoteRideId: remoteRideId,
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message: 'Firebase services are unavailable or unconfigured.',
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);
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}
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// Step 1: Firestore document metadata verification
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DocumentSnapshot<Map<String, dynamic>> doc;
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try {
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doc = await _firestore!
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.collection('users')
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.doc(user.uid)
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.collection('rides')
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.doc(remoteRideId)
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.get();
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} on FirebaseException catch (e) {
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if (e.code == 'permission-denied' || e.code == 'unauthenticated') {
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return CloudConfirmationResult.unauthorized(
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remoteRideId: remoteRideId,
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ownerUid: user.uid,
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message: 'Firestore access unauthorized (${e.code}): ${e.message}',
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);
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}
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return CloudConfirmationResult.temporarilyUnverifiable(
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remoteRideId: remoteRideId,
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message: 'Firestore temporary lookup error (${e.code}): ${e.message}',
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);
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} catch (e) {
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return CloudConfirmationResult.temporarilyUnverifiable(
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remoteRideId: remoteRideId,
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message: 'Firestore lookup exception: $e',
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);
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}
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if (!doc.exists) {
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return CloudConfirmationResult.missing(
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remoteRideId: remoteRideId,
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message: 'Firestore ride document not found.',
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);
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}
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final data = doc.data();
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if (data == null) {
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return CloudConfirmationResult.missing(
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remoteRideId: remoteRideId,
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message: 'Firestore ride document contains no data.',
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);
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}
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// Verify ownership in metadata
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final ownerId = (data['ownerId'] ?? data['uid'])?.toString();
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if (ownerId != null && ownerId != user.uid) {
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return CloudConfirmationResult.unauthorized(
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remoteRideId: remoteRideId,
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ownerUid: ownerId,
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message:
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'Firestore ride owner ($ownerId) does not match authenticated user (${user.uid}).',
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);
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}
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// Verify remote ID in metadata
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final storedId = (data['id'] ?? data['remoteRideId'])?.toString();
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if (storedId != null && storedId != remoteRideId) {
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return CloudConfirmationResult.inconsistent(
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remoteRideId: remoteRideId,
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ownerUid: user.uid,
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message:
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'Firestore ride id ($storedId) does not match requested ($remoteRideId).',
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);
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}
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final bundle = data['telemetryBundle'];
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if (bundle is! Map) {
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return CloudConfirmationResult.missing(
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remoteRideId: remoteRideId,
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message: 'Firestore document missing telemetryBundle metadata.',
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);
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}
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final bundleStatus = bundle['status']?.toString();
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if (bundleStatus != 'uploaded') {
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return CloudConfirmationResult.missing(
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remoteRideId: remoteRideId,
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message:
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'Firestore telemetryBundle status is "$bundleStatus", not "uploaded".',
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);
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}
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final expectedObjectKey =
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'users/${user.uid}/rides/$remoteRideId/telemetry.zip';
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final objectKey = (bundle['objectKey'] ?? data['telemetryBundlePath'])
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?.toString();
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if (objectKey == null || objectKey != expectedObjectKey) {
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return CloudConfirmationResult.inconsistent(
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remoteRideId: remoteRideId,
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ownerUid: user.uid,
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objectKey: objectKey,
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message:
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'telemetryBundle objectKey ($objectKey) does not match expected ($expectedObjectKey).',
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);
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}
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final expectedSha256 = (bundle['sha256'] ?? data['sha256'])?.toString();
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final expectedSize =
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(bundle['bundleSizeBytes'] ?? data['bundleSizeBytes']) as num?;
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// Step 2: R2 bundle verification via authenticated lightweight Worker check
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var idToken = await _authService.getIdToken();
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if (idToken == null || idToken.isEmpty) {
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idToken = await _authService.getIdToken(true);
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}
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if (idToken == null || idToken.isEmpty) {
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return CloudConfirmationResult.unauthorized(
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remoteRideId: remoteRideId,
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ownerUid: user.uid,
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message: 'Valid Firebase ID token required to verify R2 bundle.',
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);
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}
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final r2Result = await _r2UploadService.verifyTelemetryBundle(
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idToken: idToken,
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remoteRideId: remoteRideId,
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expectedSha256: expectedSha256,
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expectedSize: expectedSize?.toInt(),
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);
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switch (r2Result.status) {
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case CloudConfirmationStatus.confirmed:
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return CloudConfirmationResult.confirmed(
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remoteRideId: remoteRideId,
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ownerUid: user.uid,
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objectKey: r2Result.metadata?.objectKey ?? expectedObjectKey,
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sizeBytes: r2Result.metadata?.size ?? expectedSize?.toInt(),
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sha256: r2Result.metadata?.sha256 ?? expectedSha256,
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message: 'Firestore metadata and R2 bundle verified.',
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);
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case CloudConfirmationStatus.missing:
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return CloudConfirmationResult.missing(
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remoteRideId: remoteRideId,
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message:
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r2Result.errorMessage ??
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'Telemetry bundle missing from Cloudflare R2.',
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);
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case CloudConfirmationStatus.inconsistent:
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return CloudConfirmationResult.inconsistent(
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remoteRideId: remoteRideId,
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ownerUid: user.uid,
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objectKey: expectedObjectKey,
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message:
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r2Result.errorMessage ??
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'R2 telemetry bundle checksum or metadata inconsistent.',
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);
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case CloudConfirmationStatus.unauthorized:
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return CloudConfirmationResult.unauthorized(
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remoteRideId: remoteRideId,
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ownerUid: user.uid,
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message:
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r2Result.errorMessage ??
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'Unauthorized to access R2 telemetry bundle.',
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);
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case CloudConfirmationStatus.temporarilyUnverifiable:
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return CloudConfirmationResult.temporarilyUnverifiable(
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remoteRideId: remoteRideId,
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message:
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r2Result.errorMessage ??
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'R2 verification temporarily unavailable.',
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);
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}
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}
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@override
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Future<SyncResult> uploadRide(SyncItem item) async {
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final user = _authService.currentUser;
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if (user == null || user.isAnonymous) {
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return SyncResult.authRequired(
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message: 'Sign in to MotorCloud is required for cloud backup.',
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);
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}
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final ride = await (_db.select(
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_db.rides,
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)..where((r) => r.id.equals(item.localRideId))).getSingleOrNull();
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if (ride != null && ride.cloudOwnerUid != user.uid) {
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return SyncResult.permanentFailure(
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ride.cloudOwnerUid == null
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? 'This device-only ride needs explicit approval before MotorCloud backup.'
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: 'This ride belongs to another MotorCloud account and was not uploaded.',
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);
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}
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if (!await isAvailable()) {
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return SyncResult.temporaryFailure(
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'Firebase services are unavailable or unconfigured. Ride remains safely stored locally.',
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);
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}
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// Refresh the Firebase ID token before a manual upload. This prevents a
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// recently completed sign-in from being rejected because the cached token
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// has not yet propagated through the app's auth abstraction.
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var idToken = await _authService.getIdToken();
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if (idToken == null || idToken.isEmpty) {
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idToken = await _authService.getIdToken(true);
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}
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if (idToken == null || idToken.isEmpty) {
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return SyncResult.authRequired(
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message: 'Valid Firebase authentication token required for cloud sync.',
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);
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}
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try {
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final ride = await (_db.select(
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_db.rides,
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)..where((r) => r.id.equals(item.localRideId))).getSingleOrNull();
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if (ride == null) {
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return SyncResult.permanentFailure(
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'Local ride #${item.localRideId} not found in database.',
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);
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}
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// The cloud identity is generated once and then reused forever. Never
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// derive the remote identity from the local auto-increment database ID.
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final remoteRideId = await _db.ensureCloudRideId(item.localRideId);
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if (await isRideConfirmedInCloud(remoteRideId)) {
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return SyncResult.success(remoteId: remoteRideId);
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}
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final appIdentity = AppIdentity.current();
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final zipBytes = await _bundleWorker.generateCompressedBundle(
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item.localRideId,
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);
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if (zipBytes == null || zipBytes.isEmpty) {
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return SyncResult.permanentFailure(
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'Failed generating compressed telemetry bundle for ride #${item.localRideId}.',
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);
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}
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final sha256Hash = sha256.convert(zipBytes).toString();
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var r2Result = await _r2UploadService.uploadTelemetryBundle(
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idToken: idToken,
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remoteRideId: remoteRideId,
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zipBytes: zipBytes,
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sha256Hash: sha256Hash,
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appVersion: appIdentity.semanticVersion,
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);
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// If the gateway rejects the first token as unauthorized, refresh once
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// and retry. This specifically handles token rotation/expiry without
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// turning a valid signed-in session into a false authentication error.
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if (!r2Result.success && r2Result.requiresAuth) {
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final refreshedToken = await _authService.getIdToken(true);
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if (refreshedToken != null &&
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refreshedToken.isNotEmpty &&
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refreshedToken != idToken) {
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idToken = refreshedToken;
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r2Result = await _r2UploadService.uploadTelemetryBundle(
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idToken: idToken,
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remoteRideId: remoteRideId,
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zipBytes: zipBytes,
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sha256Hash: sha256Hash,
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appVersion: appIdentity.semanticVersion,
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);
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}
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}
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if (!r2Result.success) {
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if (r2Result.requiresAuth) {
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return SyncResult.authRequired(
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message:
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r2Result.errorMessage ?? 'R2 Gateway authentication required',
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);
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}
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if (r2Result.isRetryable) {
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return SyncResult.temporaryFailure(
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r2Result.errorMessage ?? 'Temporary R2 upload error',
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);
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}
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return SyncResult.permanentFailure(
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r2Result.errorMessage ?? 'Permanent R2 upload rejection',
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);
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}
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final objectKey =
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r2Result.objectKey ??
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'users/${user.uid}/rides/$remoteRideId/telemetry.zip';
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final events = await (_db.select(
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_db.rideEvents,
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)..where((e) => e.rideId.equals(item.localRideId))).get();
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final performanceRuns = await (_db.select(
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_db.performanceRuns,
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)..where((p) => p.rideId.equals(item.localRideId))).get();
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final summary = await (_db.select(
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_db.fieldTestSummaries,
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)..where((s) => s.rideId.equals(item.localRideId))).getSingleOrNull();
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final firestorePayload = <String, dynamic>{
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'id': remoteRideId,
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'ownerId': user.uid,
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'localRideId': ride.id,
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'startTime': ride.startTime.toUtc().toIso8601String(),
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'endTime': ride.endTime?.toUtc().toIso8601String(),
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'distanceMiles': ride.distanceMiles,
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'topSpeedMph': ride.topSpeedMph,
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'maxLeanLeft': ride.maxLeanLeft,
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'maxLeanRight': ride.maxLeanRight,
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'maxAccelG': ride.maxAccelG,
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'maxBrakingG': ride.maxBrakingG,
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'averageSpeed': ride.averageSpeed,
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'movingTime': ride.movingTime,
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'stoppedTime': ride.stoppedTime,
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'elevationGain': ride.elevationGain,
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'elevationLoss': ride.elevationLoss,
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'qualityScore': summary?.rideQualityScore ?? 100,
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'qualityRating': summary?.rideQualityRating ?? 'EXCELLENT',
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'motorcycleId': ride.motorcycleId,
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'motorcycleMake': ride.motorcycleMake,
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'motorcycleModel': ride.motorcycleModel,
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'motorcycleYear': ride.motorcycleYear,
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'motorcycleVariant': ride.motorcycleVariant,
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'hardBrakingEvents': events
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.where((e) => e.eventType.contains('Braking'))
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.length,
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'extremeLeanEvents': events
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.where(
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(e) =>
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e.eventType.contains('Lean') ||
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e.eventType.contains('Corner'),
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)
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.length,
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'highSpeedEvents': events
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.where((e) => e.eventType.contains('Speed'))
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.length,
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'totalEventsCount': events.length,
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'performanceRuns': performanceRuns
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.map(
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(r) => {
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'type': r.type,
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'timeMs': r.timeMs,
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'topSpeedReached': r.topSpeedReached,
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'timestamp': r.timestamp.toUtc().toIso8601String(),
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},
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)
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.toList(),
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'telemetryBundle': {
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'provider': 'cloudflare-r2',
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'objectKey': objectKey,
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'status': 'uploaded',
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'bundleSizeBytes': zipBytes.length,
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'sha256': sha256Hash,
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},
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'telemetryBundlePath': objectKey,
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'bundleSizeBytes': zipBytes.length,
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'syncVersion': 3,
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'uploadedAt': FieldValue.serverTimestamp(),
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'updatedAt': FieldValue.serverTimestamp(),
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'software': appIdentity.toJson(),
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};
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await _firestore!.collection('users').doc(user.uid).collection('rides').doc(remoteRideId).set(firestorePayload, SetOptions(merge: true));
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return SyncResult.success(remoteId: remoteRideId);
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} on FirebaseException catch (e) {
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if (e.code == 'permission-denied' || e.code == 'unauthenticated') {
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return SyncResult.authRequired(
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message: 'Firebase authorization error: ${e.message}',
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);
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}
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if (e.code == 'unavailable' ||
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e.code == 'network-request-failed' ||
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e.code == 'retry-limit-exceeded') {
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return SyncResult.temporaryFailure(
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'Network or Firebase service temporary error (${e.code}): ${e.message}',
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);
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}
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return SyncResult.permanentFailure(
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'Firebase sync error (${e.code}): ${e.message}',
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);
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} catch (e) {
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return SyncResult.temporaryFailure('Unexpected sync exception: $e');
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}
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}
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}
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