ente/lib/db/files_db.dart
2021-04-21 18:39:18 +05:30

890 lines
27 KiB
Dart

import 'dart:io';
import 'package:logging/logging.dart';
import 'package:photos/models/file_type.dart';
import 'package:photos/models/location.dart';
import 'package:photos/models/file.dart';
import 'package:path/path.dart';
import 'package:sqflite/sqflite.dart';
import 'package:path_provider/path_provider.dart';
import 'package:sqflite_migration/sqflite_migration.dart';
class FilesDB {
static final _databaseName = "ente.files.db";
static final Logger _logger = Logger("FilesDB");
static final table = 'files';
static final tempTable = 'temp_files';
static final columnGeneratedID = '_id';
static final columnUploadedFileID = 'uploaded_file_id';
static final columnOwnerID = 'owner_id';
static final columnCollectionID = 'collection_id';
static final columnLocalID = 'local_id';
static final columnTitle = 'title';
static final columnDeviceFolder = 'device_folder';
static final columnLatitude = 'latitude';
static final columnLongitude = 'longitude';
static final columnFileType = 'file_type';
static final columnIsDeleted = 'is_deleted';
static final columnCreationTime = 'creation_time';
static final columnModificationTime = 'modification_time';
static final columnUpdationTime = 'updation_time';
static final columnEncryptedKey = 'encrypted_key';
static final columnKeyDecryptionNonce = 'key_decryption_nonce';
static final columnFileDecryptionHeader = 'file_decryption_header';
static final columnThumbnailDecryptionHeader = 'thumbnail_decryption_header';
static final columnMetadataDecryptionHeader = 'metadata_decryption_header';
static final intitialScript = [...createTable(table), ...addIndex()];
static final migrationScripts = [...alterDeviceFolderToAllowNULL()];
final dbConfig = MigrationConfig(
initializationScript: intitialScript, migrationScripts: migrationScripts);
// make this a singleton class
FilesDB._privateConstructor();
static final FilesDB instance = FilesDB._privateConstructor();
// only have a single app-wide reference to the database
static Database _database;
Future<Database> get database async {
if (_database != null) return _database;
// lazily instantiate the db the first time it is accessed
_database = await _initDatabase();
return _database;
}
// this opens the database (and creates it if it doesn't exist)
_initDatabase() async {
Directory documentsDirectory = await getApplicationDocumentsDirectory();
String path = join(documentsDirectory.path, _databaseName);
return await openDatabaseWithMigration(path, dbConfig);
}
// SQL code to create the database table
static List<String> createTable(String tableName) {
return [
'''
CREATE TABLE $tableName (
$columnGeneratedID INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
$columnLocalID TEXT,
$columnUploadedFileID INTEGER,
$columnOwnerID INTEGER,
$columnCollectionID INTEGER,
$columnTitle TEXT NOT NULL,
$columnDeviceFolder TEXT,
$columnLatitude REAL,
$columnLongitude REAL,
$columnFileType INTEGER,
$columnModificationTime TEXT NOT NULL,
$columnEncryptedKey TEXT,
$columnKeyDecryptionNonce TEXT,
$columnFileDecryptionHeader TEXT,
$columnThumbnailDecryptionHeader TEXT,
$columnMetadataDecryptionHeader TEXT,
$columnIsDeleted INTEGER DEFAULT 0,
$columnCreationTime TEXT NOT NULL,
$columnUpdationTime TEXT,
UNIQUE($columnLocalID, $columnUploadedFileID, $columnCollectionID)
);
''',
];
}
static List<String> addIndex() {
return [
'''
CREATE INDEX collection_id_index ON $table($columnCollectionID);
CREATE INDEX device_folder_index ON $table($columnDeviceFolder);
CREATE INDEX creation_time_index ON $table($columnCreationTime);
CREATE INDEX updation_time_index ON $table($columnUpdationTime);
'''
];
}
static List<String> alterDeviceFolderToAllowNULL() {
return [
...createTable(tempTable),
'''
INSERT INTO $tempTable
SELECT *
FROM $table;
DROP TABLE $table;
ALTER TABLE $tempTable
RENAME TO $table;
'''
];
}
Future<void> clearTable() async {
final db = await instance.database;
await db.delete(table);
}
Future<int> insert(File file) async {
final db = await instance.database;
return await db.insert(table, _getRowForFile(file),
conflictAlgorithm: ConflictAlgorithm.replace);
}
Future<void> insertMultiple(List<File> files) async {
final startTime = DateTime.now();
final db = await instance.database;
var batch = db.batch();
int batchCounter = 0;
for (File file in files) {
if (batchCounter == 400) {
await batch.commit();
batch = db.batch();
batchCounter = 0;
}
batch.insert(
table,
_getRowForFile(file),
conflictAlgorithm: ConflictAlgorithm.replace,
);
batchCounter++;
}
await batch.commit(noResult: true);
final endTime = DateTime.now();
final duration = Duration(
microseconds:
endTime.microsecondsSinceEpoch - startTime.microsecondsSinceEpoch);
_logger.info("Batch insert of " +
files.length.toString() +
" took " +
duration.inMilliseconds.toString() +
"ms.");
}
Future<File> getFile(int generatedID) async {
final db = await instance.database;
final results = await db.query(table,
where: '$columnGeneratedID = ?', whereArgs: [generatedID]);
if (results.isEmpty) {
return null;
}
return _convertToFiles(results)[0];
}
Future<File> getUploadedFile(int uploadedID, int collectionID) async {
final db = await instance.database;
final results = await db.query(
table,
where: '$columnUploadedFileID = ? AND $columnCollectionID = ?',
whereArgs: [
uploadedID,
collectionID,
],
);
if (results.isEmpty) {
return null;
}
return _convertToFiles(results)[0];
}
Future<Set<int>> getUploadedFileIDs(int collectionID) async {
final db = await instance.database;
final results = await db.query(
table,
columns: [columnUploadedFileID],
where: '$columnCollectionID = ?',
whereArgs: [
collectionID,
],
);
final ids = Set<int>();
;
for (final result in results) {
ids.add(result[columnUploadedFileID]);
}
return ids;
}
Future<List<File>> getDeduplicatedFiles() async {
final db = await instance.database;
final results = await db.query(table,
where: '$columnIsDeleted = 0',
orderBy: '$columnCreationTime DESC',
groupBy:
'IFNULL($columnUploadedFileID, $columnGeneratedID), IFNULL($columnLocalID, $columnGeneratedID)');
return _convertToFiles(results);
}
Future<List<File>> getFiles(int startTime, int endTime, {int limit}) async {
final db = await instance.database;
final results = await db.query(
table,
where:
'$columnCreationTime >= ? AND $columnCreationTime <= ? AND $columnIsDeleted = 0 AND ($columnLocalID IS NOT NULL OR $columnUploadedFileID IS NOT NULL)',
whereArgs: [startTime, endTime],
orderBy: '$columnCreationTime DESC',
limit: limit,
);
return _convertToFiles(results);
}
Future<List<File>> getFilesInCollection(
int collectionID, int startTime, int endTime,
{int limit}) async {
final db = await instance.database;
final results = await db.query(
table,
where:
'$columnCollectionID = ? AND $columnCreationTime >= ? AND $columnCreationTime <= ? AND $columnIsDeleted = 0',
whereArgs: [collectionID, startTime, endTime],
orderBy: '$columnCreationTime DESC',
limit: limit,
);
final files = _convertToFiles(results);
_logger.info("Fetched " + files.length.toString() + " files");
return files;
}
Future<List<File>> getFilesInPath(String path, int startTime, int endTime,
{int limit}) async {
final db = await instance.database;
final results = await db.query(
table,
where:
'$columnDeviceFolder = ? AND $columnCreationTime >= ? AND $columnCreationTime <= ? AND $columnLocalID IS NOT NULL AND $columnIsDeleted = 0',
whereArgs: [path, startTime, endTime],
orderBy: '$columnCreationTime DESC',
groupBy: '$columnLocalID',
limit: limit,
);
return _convertToFiles(results);
}
Future<List<int>> getAllCreationTimes() async {
_logger.info("Gallery_home_gallery querying creation times");
final db = await instance.database;
final results = await db.query(
table,
columns: [columnCreationTime],
where:
'$columnIsDeleted = 0 AND ($columnLocalID IS NOT NULL OR $columnUploadedFileID IS NOT NULL)',
orderBy: '$columnCreationTime DESC',
);
final List<int> times = [];
for (final row in results) {
times.add(int.parse(row[columnCreationTime]));
}
_logger
.info("Gallery_home_gallery total times: " + times.length.toString());
return times;
}
Future<List<int>> getAllCreationTimesInCollection(int collectionID) async {
final db = await instance.database;
final results = await db.query(
table,
columns: [columnCreationTime],
where: '$columnCollectionID = ? AND $columnIsDeleted = 0',
whereArgs: [collectionID],
orderBy: '$columnCreationTime DESC',
);
final List<int> times = [];
for (final row in results) {
times.add(int.parse(row[columnCreationTime]));
}
return times;
}
Future<List<int>> getAllCreationTimesInPath(String path) async {
final db = await instance.database;
final results = await db.query(
table,
columns: [columnCreationTime],
where:
'$columnLocalID IS NOT NULL AND $columnDeviceFolder = ? AND $columnIsDeleted = 0',
whereArgs: [path],
orderBy: '$columnCreationTime DESC',
);
final List<int> times = [];
for (final row in results) {
times.add(int.parse(row[columnCreationTime]));
}
return times;
}
Future<List<File>> getAllVideos() async {
final db = await instance.database;
final results = await db.query(
table,
where:
'$columnLocalID IS NOT NULL AND $columnFileType = 1 AND $columnIsDeleted = 0',
orderBy: '$columnCreationTime DESC',
);
return _convertToFiles(results);
}
Future<List<File>> getAllInCollectionBeforeCreationTime(
int collectionID, int beforeCreationTime, int limit) async {
final db = await instance.database;
final results = await db.query(
table,
where:
'$columnCollectionID = ? AND $columnIsDeleted = 0 AND $columnCreationTime < ?',
whereArgs: [collectionID, beforeCreationTime],
orderBy: '$columnCreationTime DESC',
limit: limit,
);
return _convertToFiles(results);
}
Future<List<File>> getAllInPath(String path) async {
final db = await instance.database;
final results = await db.query(
table,
where:
'$columnLocalID IS NOT NULL AND $columnDeviceFolder = ? AND $columnIsDeleted = 0',
whereArgs: [path],
orderBy: '$columnCreationTime DESC',
groupBy: '$columnLocalID',
);
return _convertToFiles(results);
}
Future<List<File>> getAllInPathBeforeCreationTime(
String path, int beforeCreationTime, int limit) async {
final db = await instance.database;
final results = await db.query(
table,
where:
'$columnLocalID IS NOT NULL AND $columnDeviceFolder = ? AND $columnIsDeleted = 0 AND $columnCreationTime < ?',
whereArgs: [path, beforeCreationTime],
orderBy: '$columnCreationTime DESC',
groupBy: '$columnLocalID',
limit: limit,
);
return _convertToFiles(results);
}
Future<List<File>> getAllInCollection(int collectionID) async {
final db = await instance.database;
final results = await db.query(
table,
where: '$columnCollectionID = ?',
whereArgs: [collectionID],
orderBy: '$columnCreationTime DESC',
);
return _convertToFiles(results);
}
Future<List<File>> getFilesCreatedWithinDuration(
int startCreationTime, int endCreationTime) async {
final db = await instance.database;
final results = await db.query(
table,
where:
'$columnCreationTime > ? AND $columnCreationTime < ? AND $columnIsDeleted = 0',
whereArgs: [startCreationTime, endCreationTime],
orderBy: '$columnCreationTime ASC',
);
return _convertToFiles(results);
}
Future<List<int>> getDeletedFileIDs() async {
final db = await instance.database;
final rows = await db.query(
table,
columns: [columnUploadedFileID],
distinct: true,
where: '$columnIsDeleted = 1',
orderBy: '$columnCreationTime DESC',
);
final result = List<int>();
for (final row in rows) {
result.add(row[columnUploadedFileID]);
}
return result;
}
Future<List<File>> getFilesToBeUploadedWithinFolders(
Set<String> folders) async {
if (folders.isEmpty) {
return [];
}
final db = await instance.database;
String inParam = "";
for (final folder in folders) {
inParam += "'" + folder + "',";
}
inParam = inParam.substring(0, inParam.length - 1);
final results = await db.query(
table,
where:
'$columnUploadedFileID IS NULL AND $columnDeviceFolder IN ($inParam)',
orderBy: '$columnCreationTime DESC',
groupBy: '$columnLocalID',
);
return _convertToFiles(results);
}
Future<List<int>> getUploadedFileIDsToBeUpdated() async {
final db = await instance.database;
final rows = await db.query(
table,
columns: [columnUploadedFileID],
where:
'($columnLocalID IS NOT NULL AND $columnUploadedFileID IS NOT NULL AND $columnUpdationTime IS NULL AND $columnIsDeleted = 0)',
orderBy: '$columnCreationTime DESC',
distinct: true,
);
final uploadedFileIDs = List<int>();
for (final row in rows) {
uploadedFileIDs.add(row[columnUploadedFileID]);
}
return uploadedFileIDs;
}
Future<File> getUploadedFileInAnyCollection(int uploadedFileID) async {
final db = await instance.database;
final results = await db.query(
table,
where: '$columnUploadedFileID = ?',
whereArgs: [
uploadedFileID,
],
limit: 1,
);
if (results.isEmpty) {
return null;
}
return _convertToFiles(results)[0];
}
Future<Set<String>> getExistingLocalFileIDs() async {
final db = await instance.database;
final rows = await db.query(
table,
columns: [columnLocalID],
distinct: true,
where: '$columnLocalID IS NOT NULL',
);
final result = Set<String>();
for (final row in rows) {
result.add(row[columnLocalID]);
}
return result;
}
Future<int> getNumberOfUploadedFiles() async {
final db = await instance.database;
final rows = await db.query(
table,
columns: [columnUploadedFileID],
where:
'($columnLocalID IS NOT NULL AND $columnUploadedFileID IS NOT NULL AND $columnUpdationTime IS NOT NULL AND $columnIsDeleted = 0)',
orderBy: '$columnCreationTime DESC',
distinct: true,
);
return rows.length;
}
Future<int> updateUploadedFile(
String localID,
String title,
Location location,
int creationTime,
int modificationTime,
int updationTime,
) async {
final db = await instance.database;
return await db.update(
table,
{
columnTitle: title,
columnLatitude: location.latitude,
columnLongitude: location.longitude,
columnCreationTime: creationTime,
columnModificationTime: modificationTime,
columnUpdationTime: updationTime,
},
where: '$columnLocalID = ?',
whereArgs: [localID],
);
}
Future<Map<int, File>> getLastCreatedFilesInCollections(
List<int> collectionIDs) async {
final db = await instance.database;
final rows = await db.rawQuery('''
SELECT
$columnGeneratedID,
$columnLocalID,
$columnUploadedFileID,
$columnOwnerID,
$columnCollectionID,
$columnTitle,
$columnDeviceFolder,
$columnLatitude,
$columnLongitude,
$columnFileType,
$columnModificationTime,
$columnEncryptedKey,
$columnKeyDecryptionNonce,
$columnFileDecryptionHeader,
$columnThumbnailDecryptionHeader,
$columnMetadataDecryptionHeader,
$columnIsDeleted,
$columnUpdationTime,
MAX($columnCreationTime) as $columnCreationTime
FROM $table
WHERE $columnCollectionID IN (${collectionIDs.join(', ')}) AND $columnIsDeleted = 0
GROUP BY $columnCollectionID
ORDER BY $columnCreationTime DESC;
''');
final result = Map<int, File>();
final files = _convertToFiles(rows);
for (final file in files) {
result[file.collectionID] = file;
}
return result;
}
Future<Map<int, File>> getLastUpdatedFilesInCollections(
List<int> collectionIDs) async {
final db = await instance.database;
final rows = await db.rawQuery('''
SELECT
$columnGeneratedID,
$columnLocalID,
$columnUploadedFileID,
$columnOwnerID,
$columnCollectionID,
$columnTitle,
$columnDeviceFolder,
$columnLatitude,
$columnLongitude,
$columnFileType,
$columnModificationTime,
$columnEncryptedKey,
$columnKeyDecryptionNonce,
$columnFileDecryptionHeader,
$columnThumbnailDecryptionHeader,
$columnMetadataDecryptionHeader,
$columnIsDeleted,
$columnCreationTime,
MAX($columnUpdationTime) AS $columnUpdationTime
FROM $table
WHERE $columnCollectionID IN (${collectionIDs.join(', ')}) AND $columnIsDeleted = 0
GROUP BY $columnCollectionID
ORDER BY $columnUpdationTime DESC;
''');
final result = Map<int, File>();
final files = _convertToFiles(rows);
for (final file in files) {
result[file.collectionID] = file;
}
return result;
}
Future<List<File>> getMatchingFiles(
String title,
String deviceFolder,
int creationTime,
) async {
final db = await instance.database;
var query;
if (deviceFolder != null) {
query = db.query(
table,
where: '''$columnTitle=? AND $columnDeviceFolder=? AND
$columnCreationTime=?''',
whereArgs: [
title,
deviceFolder,
creationTime,
],
);
} else {
query = db.query(
table,
where: '''$columnTitle=? AND
$columnCreationTime=?''',
whereArgs: [
title,
creationTime,
],
);
}
final rows = await query;
if (rows.isNotEmpty) {
return _convertToFiles(rows);
} else {
return null;
}
}
Future<File> getMatchingRemoteFile(int uploadedFileID) async {
final db = await instance.database;
final rows = await db.query(
table,
where: '$columnUploadedFileID=?',
whereArgs: [uploadedFileID],
);
if (rows.isNotEmpty) {
return _getFileFromRow(rows[0]);
} else {
throw ("No matching file found");
}
}
Future<int> update(File file) async {
final db = await instance.database;
return await db.update(
table,
_getRowForFile(file),
where: '$columnGeneratedID = ?',
whereArgs: [file.generatedID],
);
}
Future<int> updateUploadedFileAcrossCollections(File file) async {
final db = await instance.database;
return await db.update(
table,
_getRowForFileWithoutCollection(file),
where: '$columnUploadedFileID = ?',
whereArgs: [file.uploadedFileID],
);
}
Future<int> markForDeletion(int uploadedFileID) async {
final db = await instance.database;
final values = new Map<String, dynamic>();
values[columnIsDeleted] = 1;
return db.update(
table,
values,
where: '$columnUploadedFileID =?',
whereArgs: [uploadedFileID],
);
}
Future<int> delete(int uploadedFileID) async {
final db = await instance.database;
return db.delete(
table,
where: '$columnUploadedFileID =?',
whereArgs: [uploadedFileID],
);
}
Future<int> deleteLocalFile(String localID) async {
final db = await instance.database;
return db.delete(
table,
where: '$columnLocalID =?',
whereArgs: [localID],
);
}
Future<int> deleteFromCollection(int uploadedFileID, int collectionID) async {
final db = await instance.database;
return db.delete(
table,
where: '$columnUploadedFileID = ? AND $columnCollectionID = ?',
whereArgs: [uploadedFileID, collectionID],
);
}
Future<int> deleteCollection(int collectionID) async {
final db = await instance.database;
return db.delete(
table,
where: '$columnCollectionID = ?',
whereArgs: [collectionID],
);
}
Future<int> removeFromCollection(int collectionID, List<int> fileIDs) async {
final db = await instance.database;
return db.delete(
table,
where:
'$columnCollectionID =? AND $columnUploadedFileID IN (${fileIDs.join(', ')})',
whereArgs: [collectionID],
);
}
Future<List<File>> getLatestLocalFiles() async {
final db = await instance.database;
final rows = await db.rawQuery('''
SELECT $table.*
FROM $table
INNER JOIN
(
SELECT $columnDeviceFolder, MAX($columnCreationTime) AS max_creation_time
FROM $table
GROUP BY $columnDeviceFolder
) latest_files
ON $table.$columnDeviceFolder = latest_files.$columnDeviceFolder
AND $table.$columnCreationTime = latest_files.max_creation_time
AND $table.$columnLocalID IS NOT NULL;
''');
return _convertToFiles(rows);
}
Future<List<File>> getLatestCollectionFiles() async {
final db = await instance.database;
final rows = await db.rawQuery('''
SELECT $table.*
FROM $table
INNER JOIN
(
SELECT $columnCollectionID, MAX($columnCreationTime) AS max_creation_time
FROM $table
GROUP BY $columnCollectionID
) latest_files
ON $table.$columnCollectionID = latest_files.$columnCollectionID
AND $table.$columnCreationTime = latest_files.max_creation_time;
''');
final files = _convertToFiles(rows);
// TODO: Do this de-duplication within the SQL Query
final collectionMap = Map<int, File>();
for (final file in files) {
if (collectionMap.containsKey(file.collectionID)) {
if (collectionMap[file.collectionID].updationTime < file.updationTime) {
continue;
}
}
collectionMap[file.collectionID] = file;
}
return collectionMap.values.toList();
}
Future<File> getLastModifiedFileInCollection(int collectionID) async {
final db = await instance.database;
final rows = await db.query(
table,
where: '$columnCollectionID = ? AND $columnIsDeleted = 0',
whereArgs: [collectionID],
orderBy: '$columnUpdationTime DESC',
limit: 1,
);
if (rows.isNotEmpty) {
return _getFileFromRow(rows[0]);
} else {
return null;
}
}
Future<bool> doesFileExistInCollection(
int uploadedFileID, int collectionID) async {
final db = await instance.database;
final rows = await db.query(
table,
where: '$columnUploadedFileID = ? AND $columnCollectionID = ?',
whereArgs: [uploadedFileID, collectionID],
limit: 1,
);
return rows.isNotEmpty;
}
List<File> _convertToFiles(List<Map<String, dynamic>> results) {
final files = List<File>();
for (final result in results) {
files.add(_getFileFromRow(result));
}
return files;
}
Map<String, dynamic> _getRowForFile(File file) {
final row = new Map<String, dynamic>();
if (file.generatedID != null) {
row[columnGeneratedID] = file.generatedID;
}
row[columnLocalID] = file.localID;
row[columnUploadedFileID] = file.uploadedFileID;
row[columnOwnerID] = file.ownerID;
row[columnCollectionID] = file.collectionID;
row[columnTitle] = file.title;
row[columnDeviceFolder] = file.deviceFolder;
if (file.location != null) {
row[columnLatitude] = file.location.latitude;
row[columnLongitude] = file.location.longitude;
}
switch (file.fileType) {
case FileType.image:
row[columnFileType] = 0;
break;
case FileType.video:
row[columnFileType] = 1;
break;
default:
row[columnFileType] = -1;
}
row[columnCreationTime] = file.creationTime;
row[columnModificationTime] = file.modificationTime;
row[columnUpdationTime] = file.updationTime;
row[columnEncryptedKey] = file.encryptedKey;
row[columnKeyDecryptionNonce] = file.keyDecryptionNonce;
row[columnFileDecryptionHeader] = file.fileDecryptionHeader;
row[columnThumbnailDecryptionHeader] = file.thumbnailDecryptionHeader;
row[columnMetadataDecryptionHeader] = file.metadataDecryptionHeader;
return row;
}
Map<String, dynamic> _getRowForFileWithoutCollection(File file) {
final row = new Map<String, dynamic>();
row[columnLocalID] = file.localID;
row[columnUploadedFileID] = file.uploadedFileID;
row[columnOwnerID] = file.ownerID;
row[columnTitle] = file.title;
row[columnDeviceFolder] = file.deviceFolder;
if (file.location != null) {
row[columnLatitude] = file.location.latitude;
row[columnLongitude] = file.location.longitude;
}
switch (file.fileType) {
case FileType.image:
row[columnFileType] = 0;
break;
case FileType.video:
row[columnFileType] = 1;
break;
default:
row[columnFileType] = -1;
}
row[columnCreationTime] = file.creationTime;
row[columnModificationTime] = file.modificationTime;
row[columnUpdationTime] = file.updationTime;
row[columnFileDecryptionHeader] = file.fileDecryptionHeader;
row[columnThumbnailDecryptionHeader] = file.thumbnailDecryptionHeader;
row[columnMetadataDecryptionHeader] = file.metadataDecryptionHeader;
return row;
}
File _getFileFromRow(Map<String, dynamic> row) {
final file = File();
file.generatedID = row[columnGeneratedID];
file.localID = row[columnLocalID];
file.uploadedFileID = row[columnUploadedFileID];
file.ownerID = row[columnOwnerID];
file.collectionID = row[columnCollectionID];
file.title = row[columnTitle];
file.deviceFolder = row[columnDeviceFolder];
if (row[columnLatitude] != null && row[columnLongitude] != null) {
file.location = Location(row[columnLatitude], row[columnLongitude]);
}
file.fileType = getFileType(row[columnFileType]);
file.creationTime = int.parse(row[columnCreationTime]);
file.modificationTime = int.parse(row[columnModificationTime]);
file.updationTime = row[columnUpdationTime] == null
? -1
: int.parse(row[columnUpdationTime]);
file.encryptedKey = row[columnEncryptedKey];
file.keyDecryptionNonce = row[columnKeyDecryptionNonce];
file.fileDecryptionHeader = row[columnFileDecryptionHeader];
file.thumbnailDecryptionHeader = row[columnThumbnailDecryptionHeader];
file.metadataDecryptionHeader = row[columnMetadataDecryptionHeader];
return file;
}
}