TW-746: support get and store fileEntity in database

lib/src/database/database_api.dart

@@ -16,6 +16,7 @@
  *   along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
+import 'dart:io';
 import 'dart:typed_data';
 
 import 'package:matrix/encryption/utils/olm_session.dart';
@@ -97,6 +98,8 @@ abstract class DatabaseApi {
 
   Future<Uint8List?> getFile(Uri mxcUri);
 
+  Future<File?> getFileEntity(Uri mxcUri);
+
   Future storeFile(Uri mxcUri, Uint8List bytes, int time);
 
   Future storeSyncFilterId(

lib/src/database/hive_collections_database.dart

@@ -18,6 +18,7 @@
 
 import 'dart:async';
 import 'dart:convert';
+import 'dart:io';
 import 'dart:math';
 import 'dart:typed_data';
 
@@ -461,6 +462,11 @@ class HiveCollectionsDatabase extends DatabaseApi {
     return null;
   }
 
+  @override
+  Future<File?> getFileEntity(Uri mxcUri) async {
+    return null;
+  }
+
   @override
   Future<StoredInboundGroupSession?> getInboundGroupSession(
     String roomId,

lib/src/database/hive_database.dart

@@ -18,6 +18,7 @@
 
 import 'dart:async';
 import 'dart:convert';
+import 'dart:io';
 import 'dart:math';
 import 'dart:typed_data';
 
@@ -1466,6 +1467,11 @@ class FamedlySdkHiveDatabase extends DatabaseApi {
     // see no need to implement this in a deprecated part
     throw UnimplementedError();
   }
+
+  @override
+  Future<File?> getFileEntity(Uri mxcUri) {
+    throw UnimplementedError();
+  }
 }
 
 dynamic _castValue(dynamic value) {

lib/src/event.dart

@@ -588,6 +588,14 @@ class Event extends MatrixEvent {
     return uint8list != null;
   }
 
+  bool isFileStoreable({bool getThumbnail = false}) {
+    final database = room.client.database;
+    final thisInfoMap = getThumbnail ? thumbnailInfoMap : infoMap;
+    return database != null &&
+        thisInfoMap['size'] is int &&
+        thisInfoMap['size'] <= database.maxFileSize;
+  }
+
   /// Downloads (and decrypts if necessary) the attachment of this
   /// event and returns it as a [MatrixFile]. If this event doesn't
   /// contain an attachment, this throws an error. Set [getThumbnail] to
@@ -613,12 +621,8 @@ class Event extends MatrixEvent {
     if (isEncrypted && !room.client.encryptionEnabled) {
       throw ('Encryption is not enabled in your Client.');
     }
-
-    // Is this file storeable?
-    final thisInfoMap = getThumbnail ? thumbnailInfoMap : infoMap;
-    var storeable = database != null &&
-        thisInfoMap['size'] is int &&
-        thisInfoMap['size'] <= database.maxFileSize;
+
+    var storeable = isFileStoreable(getThumbnail: getThumbnail);
 
     Uint8List? uint8list;
     if (storeable) {

lib/src/utils/crypto/native.dart

@@ -217,7 +217,7 @@ abstract class Cipher {
     final intPointer = memNeeded.cast<IntPtr>();
     final keyPointer = memNeeded.elementAt(sizeOf<IntPtr>());
     final initialVectorPointer = keyPointer.elementAt(keyDecoded.length);
-    final hashValuePointer = initialVectorPointer.elementAt(maxHashSize);
+    final hashValuePointer = initialVectorPointer.elementAt(initialVectorDecoded.length);
     final hashSizePointer = hashValuePointer.elementAt(maxHashSize);
 
     IOSink? outIoSink;

lib/src/utils/matrix_file.dart

@@ -77,8 +77,8 @@ class MatrixFile {
         mimeType: fileInfo.mimeType,
         filePath: fileInfo.filePath,
         bytes: null,
-        width: (fileInfo.metadata['w'] as double?)?.toInt(),
-        height: (fileInfo.metadata['h'] as double?)?.toInt(),
+        width: fileInfo.metadata['w'],
+        height: fileInfo.metadata['h'],
       );
     }
     if (msgType == MessageTypes.Video) {
@@ -89,8 +89,8 @@ class MatrixFile {
         name: fileInfo.fileName,
         mimeType: fileInfo.mimeType,
         filePath: fileInfo.filePath,
-        width: (fileInfo.metadata['w'] as double?)?.toInt(),
-        height: (fileInfo.metadata['h'] as double?)?.toInt(),
+        width: fileInfo.metadata['w'],
+        height: fileInfo.metadata['h'],
         duration: fileInfo.metadata['duration'], 
       );
     }

lib/src/utils/models/file_info.dart

@@ -11,7 +11,12 @@ class FileInfo with EquatableMixin {
   final int fileSize;
   final Stream<List<int>>? readStream;
 
-  FileInfo(this.fileName, this.filePath, this.fileSize, {this.readStream});
+  FileInfo(
+    this.fileName,
+    this.filePath,
+    this.fileSize,{
+    this.readStream,
+  });
 
   factory FileInfo.empty() {
     return FileInfo('', '', 0);

lib/src/utils/models/image_file_info.dart

@@ -3,8 +3,9 @@ import 'package:matrix/matrix.dart';
 class ImageFileInfo extends FileInfo {
   ImageFileInfo(
     super.fileName, 
-    super.filePath, 
+    super.filePath,
     super.fileSize, {
+      super.readStream,
       this.width,
       this.height,
     }
@@ -18,8 +19,8 @@ class ImageFileInfo extends FileInfo {
   Map<String, dynamic> get metadata => ({
         'mimetype': mimeType,
         'size': fileSize,
-        'w': width?.toDouble(),
-        'h': height?.toDouble(),
+        'w': width,
+        'h': height,
       });
 
   @override

lib/src/utils/models/video_file_info.dart

@@ -15,6 +15,7 @@ class VideoFileInfo extends FileInfo {
     super.fileName,
     super.filePath,
     super.fileSize, {
+    super.readStream,
     required this.imagePlaceholderBytes,
     this.width,
     this.height,
@@ -25,8 +26,8 @@ class VideoFileInfo extends FileInfo {
   Map<String, dynamic> get metadata => ({
         'mimetype': mimeType,
         'size': fileSize,
-        'w': width?.toDouble(),
-        'h': height?.toDouble(),
+        'w': width,
+        'h': height,
         if (duration != null) 'duration': duration!.inMilliseconds,
       });