refactor(persistence): Align message entity with StreamChat.

Signed-off-by: xsahil03x <[email protected]>

packages/stream_chat_persistence/lib/src/entity/messages.dart

@@ -53,14 +53,52 @@ class Messages extends Table {
   /// A used command name.
   TextColumn get command => text().nullable()();
 
-  /// The DateTime when the message was created.
-  DateTimeColumn get createdAt => dateTime().withDefault(currentDateAndTime)();
+  /// The DateTime on which the message was created.
+  ///
+  /// Returns the latest between [localCreatedAt] and [remoteCreatedAt].
+  /// If both are null, returns [currentDateAndTime].
+  Expression<DateTime> get createdAt {
+    return coalesce<DateTime>(
+      [localCreatedAt, remoteCreatedAt, currentDateAndTime],
+    );
+  }
 
-  /// The DateTime when the message was updated last time.
-  DateTimeColumn get updatedAt => dateTime().withDefault(currentDateAndTime)();
+  /// The DateTime on which the message was created on the client.
+  DateTimeColumn get localCreatedAt => dateTime().nullable()();
 
-  /// The DateTime when the message was deleted.
-  DateTimeColumn get deletedAt => dateTime().nullable()();
+  /// The DateTime on which the message was created on the server.
+  DateTimeColumn get remoteCreatedAt => dateTime().nullable()();
+
+  /// The DateTime on which the message was updated last time.
+  ///
+  /// Returns the latest between [localUpdatedAt] and [remoteUpdatedAt].
+  /// If both are null, returns [createdAt].
+  Expression<DateTime> get updatedAt {
+    return coalesce<DateTime>(
+      [localUpdatedAt, remoteUpdatedAt, createdAt],
+    );
+  }
+
+  /// The DateTime on which the message was updated on the client.
+  DateTimeColumn get localUpdatedAt => dateTime().nullable()();
+
+  /// The DateTime on which the message was updated on the server.
+  DateTimeColumn get remoteUpdatedAt => dateTime().nullable()();
+
+  /// The DateTime on which the message was deleted.
+  ///
+  /// Returns the latest between [localDeletedAt] and [remoteDeletedAt].
+  Expression<DateTime> get deletedAt {
+    return coalesce<DateTime>(
+      [localDeletedAt, remoteDeletedAt],
+    );
+  }
+
+  /// The DateTime on which the message was deleted on the client.
+  DateTimeColumn get localDeletedAt => dateTime().nullable()();
+
+  /// The DateTime on which the message was deleted on the server.
+  DateTimeColumn get remoteDeletedAt => dateTime().nullable()();
 
   /// Id of the User who sent the message
   TextColumn get userId => text().nullable()();