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immich/mobile/lib/shared/services/sync.service.dart
shenlong bffc2cdf60
refactor(mobile): build context extensions (#4923)
* refactor: move all extensions to separate package

* refactor(mobile): add BuildContext extension

* refactor(mobile): use theme getters from context

* refactor(mobile): use media query size from context

* refactor(mobile): use auto router methods from context

* refactor(mobile): use navigator methods from context

---------

Co-authored-by: shalong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>
2023-11-09 10:19:53 -06:00

843 lines
30 KiB
Dart

import 'dart:async';
import 'package:collection/collection.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:immich_mobile/shared/models/album.dart';
import 'package:immich_mobile/shared/models/asset.dart';
import 'package:immich_mobile/shared/models/etag.dart';
import 'package:immich_mobile/shared/models/exif_info.dart';
import 'package:immich_mobile/shared/models/store.dart';
import 'package:immich_mobile/shared/models/user.dart';
import 'package:immich_mobile/shared/providers/db.provider.dart';
import 'package:immich_mobile/shared/services/hash.service.dart';
import 'package:immich_mobile/utils/async_mutex.dart';
import 'package:immich_mobile/extensions/collection_extensions.dart';
import 'package:immich_mobile/utils/diff.dart';
import 'package:isar/isar.dart';
import 'package:logging/logging.dart';
import 'package:openapi/api.dart';
import 'package:photo_manager/photo_manager.dart';
final syncServiceProvider = Provider(
(ref) => SyncService(ref.watch(dbProvider), ref.watch(hashServiceProvider)),
);
class SyncService {
final Isar _db;
final HashService _hashService;
final AsyncMutex _lock = AsyncMutex();
final Logger _log = Logger('SyncService');
SyncService(this._db, this._hashService);
// public methods:
/// Syncs users from the server to the local database
/// Returns `true`if there were any changes
Future<bool> syncUsersFromServer(List<User> users) async {
users.sortBy((u) => u.id);
final dbUsers = await _db.users.where().sortById().findAll();
assert(dbUsers.isSortedBy((u) => u.id), "dbUsers not sorted!");
final List<int> toDelete = [];
final List<User> toUpsert = [];
final changes = diffSortedListsSync(
users,
dbUsers,
compare: (User a, User b) => a.id.compareTo(b.id),
both: (User a, User b) {
if (!a.updatedAt.isAtSameMomentAs(b.updatedAt) ||
a.isPartnerSharedBy != b.isPartnerSharedBy ||
a.isPartnerSharedWith != b.isPartnerSharedWith) {
toUpsert.add(a);
return true;
}
return false;
},
onlyFirst: (User a) => toUpsert.add(a),
onlySecond: (User b) => toDelete.add(b.isarId),
);
if (changes) {
await _db.writeTxn(() async {
await _db.users.deleteAll(toDelete);
await _db.users.putAll(toUpsert);
});
}
return changes;
}
/// Syncs remote assets owned by the logged-in user to the DB
/// Returns `true` if there were any changes
Future<bool> syncRemoteAssetsToDb(
User user,
Future<(List<Asset>? toUpsert, List<String>? toDelete)> Function(
User user,
DateTime since,
) getChangedAssets,
FutureOr<List<Asset>?> Function(User user) loadAssets,
) =>
_lock.run(
() async =>
await _syncRemoteAssetChanges(user, getChangedAssets) ??
await _syncRemoteAssetsFull(user, loadAssets),
);
/// Syncs remote albums to the database
/// returns `true` if there were any changes
Future<bool> syncRemoteAlbumsToDb(
List<AlbumResponseDto> remote, {
required bool isShared,
required FutureOr<AlbumResponseDto> Function(AlbumResponseDto) loadDetails,
}) =>
_lock.run(() => _syncRemoteAlbumsToDb(remote, isShared, loadDetails));
/// Syncs all device albums and their assets to the database
/// Returns `true` if there were any changes
Future<bool> syncLocalAlbumAssetsToDb(
List<AssetPathEntity> onDevice, [
Set<String>? excludedAssets,
]) =>
_lock.run(() => _syncLocalAlbumAssetsToDb(onDevice, excludedAssets));
/// returns all Asset IDs that are not contained in the existing list
List<int> sharedAssetsToRemove(
List<Asset> deleteCandidates,
List<Asset> existing,
) {
if (deleteCandidates.isEmpty) {
return [];
}
deleteCandidates.sort(Asset.compareById);
existing.sort(Asset.compareById);
return _diffAssets(existing, deleteCandidates, compare: Asset.compareById)
.$3
.map((e) => e.id)
.toList();
}
/// Syncs a new asset to the db. Returns `true` if successful
Future<bool> syncNewAssetToDb(Asset newAsset) =>
_lock.run(() => _syncNewAssetToDb(newAsset));
// private methods:
/// Syncs a new asset to the db. Returns `true` if successful
Future<bool> _syncNewAssetToDb(Asset a) async {
final Asset? inDb =
await _db.assets.getByOwnerIdChecksum(a.ownerId, a.checksum);
if (inDb != null) {
// unify local/remote assets by replacing the
// local-only asset in the DB with a local&remote asset
a = inDb.updatedCopy(a);
}
try {
await _db.writeTxn(() => a.put(_db));
} on IsarError catch (e) {
_log.severe("Failed to put new asset into db: $e");
return false;
}
return true;
}
/// Efficiently syncs assets via changes. Returns `null` when a full sync is required.
Future<bool?> _syncRemoteAssetChanges(
User user,
Future<(List<Asset>? toUpsert, List<String>? toDelete)> Function(
User user,
DateTime since,
) getChangedAssets,
) async {
final DateTime? since = _db.eTags.getByIdSync(user.id)?.time?.toUtc();
if (since == null) return null;
final DateTime now = DateTime.now();
final (toUpsert, toDelete) = await getChangedAssets(user, since);
if (toUpsert == null || toDelete == null) return null;
try {
if (toDelete.isNotEmpty) {
await handleRemoteAssetRemoval(toDelete);
}
if (toUpsert.isNotEmpty) {
final (_, updated) = await _linkWithExistingFromDb(toUpsert);
await upsertAssetsWithExif(updated);
}
if (toUpsert.isNotEmpty || toDelete.isNotEmpty) {
await _updateUserAssetsETag(user, now);
return true;
}
return false;
} on IsarError catch (e) {
_log.severe("Failed to sync remote assets to db: $e");
}
return null;
}
/// Deletes remote-only assets, updates merged assets to be local-only
Future<void> handleRemoteAssetRemoval(List<String> idsToDelete) {
return _db.writeTxn(() async {
final idsToRemove = await _db.assets
.remote(idsToDelete)
.filter()
.localIdIsNull()
.idProperty()
.findAll();
await _db.assets.deleteAll(idsToRemove);
await _db.exifInfos.deleteAll(idsToRemove);
final onlyLocal = await _db.assets.remote(idsToDelete).findAll();
if (onlyLocal.isNotEmpty) {
for (final Asset a in onlyLocal) {
a.remoteId = null;
a.isTrashed = false;
}
await _db.assets.putAll(onlyLocal);
}
});
}
/// Syncs assets by loading and comparing all assets from the server.
Future<bool> _syncRemoteAssetsFull(
User user,
FutureOr<List<Asset>?> Function(User user) loadAssets,
) async {
final DateTime now = DateTime.now().toUtc();
final List<Asset>? remote = await loadAssets(user);
if (remote == null) {
return false;
}
final List<Asset> inDb = await _db.assets
.where()
.ownerIdEqualToAnyChecksum(user.isarId)
.sortByChecksum()
.findAll();
assert(inDb.isSorted(Asset.compareByChecksum), "inDb not sorted!");
remote.sort(Asset.compareByChecksum);
// filter our duplicates that might be introduced by the chunked retrieval
remote.uniqueConsecutive(compare: Asset.compareByChecksum);
final (toAdd, toUpdate, toRemove) = _diffAssets(remote, inDb, remote: true);
if (toAdd.isEmpty && toUpdate.isEmpty && toRemove.isEmpty) {
await _updateUserAssetsETag(user, now);
return false;
}
final idsToDelete = toRemove.map((e) => e.id).toList();
try {
await _db.writeTxn(() => _db.assets.deleteAll(idsToDelete));
await upsertAssetsWithExif(toAdd + toUpdate);
} on IsarError catch (e) {
_log.severe("Failed to sync remote assets to db: $e");
}
await _updateUserAssetsETag(user, now);
return true;
}
Future<void> _updateUserAssetsETag(User user, DateTime time) =>
_db.writeTxn(() => _db.eTags.put(ETag(id: user.id, time: time)));
/// Syncs remote albums to the database
/// returns `true` if there were any changes
Future<bool> _syncRemoteAlbumsToDb(
List<AlbumResponseDto> remote,
bool isShared,
FutureOr<AlbumResponseDto> Function(AlbumResponseDto) loadDetails,
) async {
remote.sortBy((e) => e.id);
final baseQuery = _db.albums.where().remoteIdIsNotNull().filter();
final QueryBuilder<Album, Album, QAfterFilterCondition> query;
if (isShared) {
query = baseQuery.sharedEqualTo(true);
} else {
final User me = Store.get(StoreKey.currentUser);
query = baseQuery.owner((q) => q.isarIdEqualTo(me.isarId));
}
final List<Album> dbAlbums = await query.sortByRemoteId().findAll();
assert(dbAlbums.isSortedBy((e) => e.remoteId!), "dbAlbums not sorted!");
final List<Asset> toDelete = [];
final List<Asset> existing = [];
final bool changes = await diffSortedLists(
remote,
dbAlbums,
compare: (AlbumResponseDto a, Album b) => a.id.compareTo(b.remoteId!),
both: (AlbumResponseDto a, Album b) =>
_syncRemoteAlbum(a, b, toDelete, existing, loadDetails),
onlyFirst: (AlbumResponseDto a) =>
_addAlbumFromServer(a, existing, loadDetails),
onlySecond: (Album a) => _removeAlbumFromDb(a, toDelete),
);
if (isShared && toDelete.isNotEmpty) {
final List<int> idsToRemove = sharedAssetsToRemove(toDelete, existing);
if (idsToRemove.isNotEmpty) {
await _db.writeTxn(() async {
await _db.assets.deleteAll(idsToRemove);
await _db.exifInfos.deleteAll(idsToRemove);
});
}
} else {
assert(toDelete.isEmpty);
}
return changes;
}
/// syncs albums from the server to the local database (does not support
/// syncing changes from local back to server)
/// accumulates
Future<bool> _syncRemoteAlbum(
AlbumResponseDto dto,
Album album,
List<Asset> deleteCandidates,
List<Asset> existing,
FutureOr<AlbumResponseDto> Function(AlbumResponseDto) loadDetails,
) async {
if (!_hasAlbumResponseDtoChanged(dto, album)) {
return false;
}
// loadDetails (/api/album/:id) will not include lastModifiedAssetTimestamp,
// i.e. it will always be null. Save it here.
final originalDto = dto;
dto = await loadDetails(dto);
if (dto.assetCount != dto.assets.length) {
return false;
}
final assetsInDb =
await album.assets.filter().sortByOwnerId().thenByChecksum().findAll();
assert(assetsInDb.isSorted(Asset.compareByOwnerChecksum), "inDb unsorted!");
final List<Asset> assetsOnRemote = dto.getAssets();
assetsOnRemote.sort(Asset.compareByOwnerChecksum);
final (toAdd, toUpdate, toUnlink) = _diffAssets(
assetsOnRemote,
assetsInDb,
compare: Asset.compareByOwnerChecksum,
);
// update shared users
final List<User> sharedUsers = album.sharedUsers.toList(growable: false);
sharedUsers.sort((a, b) => a.id.compareTo(b.id));
dto.sharedUsers.sort((a, b) => a.id.compareTo(b.id));
final List<String> userIdsToAdd = [];
final List<User> usersToUnlink = [];
diffSortedListsSync(
dto.sharedUsers,
sharedUsers,
compare: (UserResponseDto a, User b) => a.id.compareTo(b.id),
both: (a, b) => false,
onlyFirst: (UserResponseDto a) => userIdsToAdd.add(a.id),
onlySecond: (User a) => usersToUnlink.add(a),
);
// for shared album: put missing album assets into local DB
final (existingInDb, updated) = await _linkWithExistingFromDb(toAdd);
await upsertAssetsWithExif(updated);
final assetsToLink = existingInDb + updated;
final usersToLink = (await _db.users.getAllById(userIdsToAdd)).cast<User>();
album.name = dto.albumName;
album.shared = dto.shared;
album.modifiedAt = dto.updatedAt;
album.lastModifiedAssetTimestamp = originalDto.lastModifiedAssetTimestamp;
if (album.thumbnail.value?.remoteId != dto.albumThumbnailAssetId) {
album.thumbnail.value = await _db.assets
.where()
.remoteIdEqualTo(dto.albumThumbnailAssetId)
.findFirst();
}
// write & commit all changes to DB
try {
await _db.writeTxn(() async {
await _db.assets.putAll(toUpdate);
await album.thumbnail.save();
await album.sharedUsers
.update(link: usersToLink, unlink: usersToUnlink);
await album.assets.update(link: assetsToLink, unlink: toUnlink.cast());
await _db.albums.put(album);
});
_log.info("Synced changes of remote album ${album.name} to DB");
} on IsarError catch (e) {
_log.severe("Failed to sync remote album to database $e");
}
if (album.shared || dto.shared) {
final userId = Store.get(StoreKey.currentUser).isarId;
final foreign =
await album.assets.filter().not().ownerIdEqualTo(userId).findAll();
existing.addAll(foreign);
// delete assets in DB unless they belong to this user or part of some other shared album
deleteCandidates.addAll(toUnlink.where((a) => a.ownerId != userId));
}
return true;
}
/// Adds a remote album to the database while making sure to add any foreign
/// (shared) assets to the database beforehand
/// accumulates assets already existing in the database
Future<void> _addAlbumFromServer(
AlbumResponseDto dto,
List<Asset> existing,
FutureOr<AlbumResponseDto> Function(AlbumResponseDto) loadDetails,
) async {
if (dto.assetCount != dto.assets.length) {
dto = await loadDetails(dto);
}
if (dto.assetCount == dto.assets.length) {
// in case an album contains assets not yet present in local DB:
// put missing album assets into local DB
final (existingInDb, updated) =
await _linkWithExistingFromDb(dto.getAssets());
existing.addAll(existingInDb);
await upsertAssetsWithExif(updated);
final Album a = await Album.remote(dto);
await _db.writeTxn(() => _db.albums.store(a));
}
}
/// Accumulates all suitable album assets to the `deleteCandidates` and
/// removes the album from the database.
Future<void> _removeAlbumFromDb(
Album album,
List<Asset> deleteCandidates,
) async {
if (album.isLocal) {
_log.info("Removing local album $album from DB");
// delete assets in DB unless they are remote or part of some other album
deleteCandidates.addAll(
await album.assets.filter().remoteIdIsNull().findAll(),
);
} else if (album.shared) {
final User user = Store.get(StoreKey.currentUser);
// delete assets in DB unless they belong to this user or are part of some other shared album or belong to a partner
final userIds = await _db.users
.filter()
.isPartnerSharedWithEqualTo(true)
.isarIdProperty()
.findAll();
userIds.add(user.isarId);
final orphanedAssets = await album.assets
.filter()
.not()
.anyOf(userIds, (q, int id) => q.ownerIdEqualTo(id))
.findAll();
deleteCandidates.addAll(orphanedAssets);
}
try {
final bool ok = await _db.writeTxn(() => _db.albums.delete(album.id));
assert(ok);
_log.info("Removed local album $album from DB");
} catch (e) {
_log.severe("Failed to remove local album $album from DB");
}
}
/// Syncs all device albums and their assets to the database
/// Returns `true` if there were any changes
Future<bool> _syncLocalAlbumAssetsToDb(
List<AssetPathEntity> onDevice, [
Set<String>? excludedAssets,
]) async {
onDevice.sort((a, b) => a.id.compareTo(b.id));
final inDb =
await _db.albums.where().localIdIsNotNull().sortByLocalId().findAll();
final List<Asset> deleteCandidates = [];
final List<Asset> existing = [];
assert(inDb.isSorted((a, b) => a.localId!.compareTo(b.localId!)), "sort!");
final bool anyChanges = await diffSortedLists(
onDevice,
inDb,
compare: (AssetPathEntity a, Album b) => a.id.compareTo(b.localId!),
both: (AssetPathEntity ape, Album album) => _syncAlbumInDbAndOnDevice(
ape,
album,
deleteCandidates,
existing,
excludedAssets,
),
onlyFirst: (AssetPathEntity ape) =>
_addAlbumFromDevice(ape, existing, excludedAssets),
onlySecond: (Album a) => _removeAlbumFromDb(a, deleteCandidates),
);
_log.fine(
"Syncing all local albums almost done. Collected ${deleteCandidates.length} asset candidates to delete",
);
final (toDelete, toUpdate) =
_handleAssetRemoval(deleteCandidates, existing, remote: false);
_log.fine(
"${toDelete.length} assets to delete, ${toUpdate.length} to update",
);
if (toDelete.isNotEmpty || toUpdate.isNotEmpty) {
await _db.writeTxn(() async {
await _db.assets.deleteAll(toDelete);
await _db.exifInfos.deleteAll(toDelete);
await _db.assets.putAll(toUpdate);
});
_log.info(
"Removed ${toDelete.length} and updated ${toUpdate.length} local assets from DB",
);
}
return anyChanges;
}
/// Syncs the device album to the album in the database
/// returns `true` if there were any changes
/// Accumulates asset candidates to delete and those already existing in DB
Future<bool> _syncAlbumInDbAndOnDevice(
AssetPathEntity ape,
Album album,
List<Asset> deleteCandidates,
List<Asset> existing, [
Set<String>? excludedAssets,
bool forceRefresh = false,
]) async {
if (!forceRefresh && !await _hasAssetPathEntityChanged(ape, album)) {
_log.fine("Local album ${ape.name} has not changed. Skipping sync.");
return false;
}
if (!forceRefresh &&
excludedAssets == null &&
await _syncDeviceAlbumFast(ape, album)) {
return true;
}
// general case, e.g. some assets have been deleted or there are excluded albums on iOS
final inDb = await album.assets
.filter()
.ownerIdEqualTo(Store.get(StoreKey.currentUser).isarId)
.sortByChecksum()
.findAll();
assert(inDb.isSorted(Asset.compareByChecksum), "inDb not sorted!");
final int assetCountOnDevice = await ape.assetCountAsync;
final List<Asset> onDevice =
await _hashService.getHashedAssets(ape, excludedAssets: excludedAssets);
_removeDuplicates(onDevice);
// _removeDuplicates sorts `onDevice` by checksum
final (toAdd, toUpdate, toDelete) = _diffAssets(onDevice, inDb);
if (toAdd.isEmpty &&
toUpdate.isEmpty &&
toDelete.isEmpty &&
album.name == ape.name &&
ape.lastModified != null &&
album.modifiedAt.isAtSameMomentAs(ape.lastModified!)) {
// changes only affeted excluded albums
_log.fine(
"Only excluded assets in local album ${ape.name} changed. Stopping sync.",
);
if (assetCountOnDevice !=
_db.eTags.getByIdSync(ape.eTagKeyAssetCount)?.assetCount) {
await _db.writeTxn(
() => _db.eTags.put(
ETag(id: ape.eTagKeyAssetCount, assetCount: assetCountOnDevice),
),
);
}
return false;
}
_log.fine(
"Syncing local album ${ape.name}. ${toAdd.length} assets to add, ${toUpdate.length} to update, ${toDelete.length} to delete",
);
final (existingInDb, updated) = await _linkWithExistingFromDb(toAdd);
_log.fine(
"Linking assets to add with existing from db. ${existingInDb.length} existing, ${updated.length} to update",
);
deleteCandidates.addAll(toDelete);
existing.addAll(existingInDb);
album.name = ape.name;
album.modifiedAt = ape.lastModified ?? DateTime.now();
if (album.thumbnail.value != null &&
toDelete.contains(album.thumbnail.value)) {
album.thumbnail.value = null;
}
try {
await _db.writeTxn(() async {
await _db.assets.putAll(updated);
await _db.assets.putAll(toUpdate);
await album.assets
.update(link: existingInDb + updated, unlink: toDelete);
await _db.albums.put(album);
album.thumbnail.value ??= await album.assets.filter().findFirst();
await album.thumbnail.save();
await _db.eTags.put(
ETag(id: ape.eTagKeyAssetCount, assetCount: assetCountOnDevice),
);
});
_log.info("Synced changes of local album ${ape.name} to DB");
} on IsarError catch (e) {
_log.severe("Failed to update synced album ${ape.name} in DB: $e");
}
return true;
}
/// fast path for common case: only new assets were added to device album
/// returns `true` if successfull, else `false`
Future<bool> _syncDeviceAlbumFast(AssetPathEntity ape, Album album) async {
if (!(ape.lastModified ?? DateTime.now()).isAfter(album.modifiedAt)) {
return false;
}
final int totalOnDevice = await ape.assetCountAsync;
final int lastKnownTotal =
(await _db.eTags.getById(ape.eTagKeyAssetCount))?.assetCount ?? 0;
final AssetPathEntity? modified = totalOnDevice > lastKnownTotal
? await ape.fetchPathProperties(
filterOptionGroup: FilterOptionGroup(
updateTimeCond: DateTimeCond(
min: album.modifiedAt.add(const Duration(seconds: 1)),
max: ape.lastModified ?? DateTime.now(),
),
),
)
: null;
if (modified == null) {
return false;
}
final List<Asset> newAssets = await _hashService.getHashedAssets(modified);
if (totalOnDevice != lastKnownTotal + newAssets.length) {
return false;
}
album.modifiedAt = ape.lastModified ?? DateTime.now();
_removeDuplicates(newAssets);
final (existingInDb, updated) = await _linkWithExistingFromDb(newAssets);
try {
await _db.writeTxn(() async {
await _db.assets.putAll(updated);
await album.assets.update(link: existingInDb + updated);
await _db.albums.put(album);
await _db.eTags
.put(ETag(id: ape.eTagKeyAssetCount, assetCount: totalOnDevice));
});
_log.info("Fast synced local album ${ape.name} to DB");
} on IsarError catch (e) {
_log.severe("Failed to fast sync local album ${ape.name} to DB: $e");
return false;
}
return true;
}
/// Adds a new album from the device to the database and Accumulates all
/// assets already existing in the database to the list of `existing` assets
Future<void> _addAlbumFromDevice(
AssetPathEntity ape,
List<Asset> existing, [
Set<String>? excludedAssets,
]) async {
_log.info("Syncing a new local album to DB: ${ape.name}");
final Album a = Album.local(ape);
final assets =
await _hashService.getHashedAssets(ape, excludedAssets: excludedAssets);
_removeDuplicates(assets);
final (existingInDb, updated) = await _linkWithExistingFromDb(assets);
_log.info(
"${existingInDb.length} assets already existed in DB, to upsert ${updated.length}",
);
await upsertAssetsWithExif(updated);
existing.addAll(existingInDb);
a.assets.addAll(existingInDb);
a.assets.addAll(updated);
final thumb = existingInDb.firstOrNull ?? updated.firstOrNull;
a.thumbnail.value = thumb;
try {
await _db.writeTxn(() => _db.albums.store(a));
_log.info("Added a new local album to DB: ${ape.name}");
} on IsarError catch (e) {
_log.severe("Failed to add new local album ${ape.name} to DB: $e");
}
}
/// Returns a tuple (existing, updated)
Future<(List<Asset> existing, List<Asset> updated)> _linkWithExistingFromDb(
List<Asset> assets,
) async {
if (assets.isEmpty) return ([].cast<Asset>(), [].cast<Asset>());
final List<Asset?> inDb = await _db.assets.getAllByOwnerIdChecksum(
assets.map((a) => a.ownerId).toInt64List(),
assets.map((a) => a.checksum).toList(growable: false),
);
assert(inDb.length == assets.length);
final List<Asset> existing = [], toUpsert = [];
for (int i = 0; i < assets.length; i++) {
final Asset? b = inDb[i];
if (b == null) {
toUpsert.add(assets[i]);
continue;
}
if (b.canUpdate(assets[i])) {
final updated = b.updatedCopy(assets[i]);
assert(updated.id != Isar.autoIncrement);
toUpsert.add(updated);
} else {
existing.add(b);
}
}
assert(existing.length + toUpsert.length == assets.length);
return (existing, toUpsert);
}
/// Inserts or updates the assets in the database with their ExifInfo (if any)
Future<void> upsertAssetsWithExif(List<Asset> assets) async {
if (assets.isEmpty) {
return;
}
final exifInfos = assets.map((e) => e.exifInfo).whereNotNull().toList();
try {
await _db.writeTxn(() async {
await _db.assets.putAll(assets);
for (final Asset added in assets) {
added.exifInfo?.id = added.id;
}
await _db.exifInfos.putAll(exifInfos);
});
_log.info("Upserted ${assets.length} assets into the DB");
} on IsarError catch (e) {
_log.severe(
"Failed to upsert ${assets.length} assets into the DB: ${e.toString()}",
);
// give details on the errors
assets.sort(Asset.compareByOwnerChecksum);
final inDb = await _db.assets.getAllByOwnerIdChecksum(
assets.map((e) => e.ownerId).toInt64List(),
assets.map((e) => e.checksum).toList(growable: false),
);
for (int i = 0; i < assets.length; i++) {
final Asset a = assets[i];
final Asset? b = inDb[i];
if (b == null) {
if (a.id != Isar.autoIncrement) {
_log.warning(
"Trying to update an asset that does not exist in DB:\n$a",
);
}
} else if (a.id != b.id) {
_log.warning(
"Trying to insert another asset with the same checksum+owner. In DB:\n$b\nTo insert:\n$a",
);
}
}
for (int i = 1; i < assets.length; i++) {
if (Asset.compareByOwnerChecksum(assets[i - 1], assets[i]) == 0) {
_log.warning(
"Trying to insert duplicate assets:\n${assets[i - 1]}\n${assets[i]}",
);
}
}
}
}
List<Asset> _removeDuplicates(List<Asset> assets) {
final int before = assets.length;
assets.sort(Asset.compareByOwnerChecksumCreatedModified);
assets.uniqueConsecutive(
compare: Asset.compareByOwnerChecksum,
onDuplicate: (a, b) =>
_log.info("Ignoring duplicate assets on device:\n$a\n$b"),
);
final int duplicates = before - assets.length;
if (duplicates > 0) {
_log.warning("Ignored $duplicates duplicate assets on device");
}
return assets;
}
/// returns `true` if the albums differ on the surface
Future<bool> _hasAssetPathEntityChanged(AssetPathEntity a, Album b) async {
return a.name != b.name ||
a.lastModified == null ||
!a.lastModified!.isAtSameMomentAs(b.modifiedAt) ||
await a.assetCountAsync !=
(await _db.eTags.getById(a.eTagKeyAssetCount))?.assetCount;
}
}
/// Returns a triple(toAdd, toUpdate, toRemove)
(List<Asset> toAdd, List<Asset> toUpdate, List<Asset> toRemove) _diffAssets(
List<Asset> assets,
List<Asset> inDb, {
bool? remote,
int Function(Asset, Asset) compare = Asset.compareByChecksum,
}) {
final List<Asset> toAdd = [];
final List<Asset> toUpdate = [];
final List<Asset> toRemove = [];
if (assets.isEmpty || inDb.isEmpty) {
// fast path for trivial cases: halfes memory usage during initial sync
return assets.isEmpty
? (toAdd, toUpdate, inDb) // remove all from DB
: (assets, toUpdate, toRemove); // add all assets
}
diffSortedListsSync(
inDb,
assets,
compare: compare,
both: (Asset a, Asset b) {
if (a.canUpdate(b)) {
toUpdate.add(a.updatedCopy(b));
return true;
}
return false;
},
onlyFirst: (Asset a) {
if (remote == true && a.isLocal) {
if (a.remoteId != null) {
a.remoteId = null;
toUpdate.add(a);
}
} else if (remote == false && a.isRemote) {
if (a.isLocal) {
a.localId = null;
toUpdate.add(a);
}
} else {
toRemove.add(a);
}
},
onlySecond: (Asset b) => toAdd.add(b),
);
return (toAdd, toUpdate, toRemove);
}
/// returns a tuple (toDelete toUpdate) when assets are to be deleted
(List<int> toDelete, List<Asset> toUpdate) _handleAssetRemoval(
List<Asset> deleteCandidates,
List<Asset> existing, {
bool? remote,
}) {
if (deleteCandidates.isEmpty) {
return const ([], []);
}
deleteCandidates.sort(Asset.compareById);
deleteCandidates.uniqueConsecutive(compare: Asset.compareById);
existing.sort(Asset.compareById);
existing.uniqueConsecutive(compare: Asset.compareById);
final (tooAdd, toUpdate, toRemove) = _diffAssets(
existing,
deleteCandidates,
compare: Asset.compareById,
remote: remote,
);
assert(tooAdd.isEmpty, "toAdd should be empty in _handleAssetRemoval");
return (toRemove.map((e) => e.id).toList(), toUpdate);
}
/// returns `true` if the albums differ on the surface
bool _hasAlbumResponseDtoChanged(AlbumResponseDto dto, Album a) {
return dto.assetCount != a.assetCount ||
dto.albumName != a.name ||
dto.albumThumbnailAssetId != a.thumbnail.value?.remoteId ||
dto.shared != a.shared ||
dto.sharedUsers.length != a.sharedUsers.length ||
!dto.updatedAt.isAtSameMomentAs(a.modifiedAt) ||
(dto.lastModifiedAssetTimestamp == null &&
a.lastModifiedAssetTimestamp != null) ||
(dto.lastModifiedAssetTimestamp != null &&
a.lastModifiedAssetTimestamp == null) ||
(dto.lastModifiedAssetTimestamp != null &&
a.lastModifiedAssetTimestamp != null &&
!dto.lastModifiedAssetTimestamp!
.isAtSameMomentAs(a.lastModifiedAssetTimestamp!));
}