modify entities according to NNBD models

Signed-off-by: Sahil Kumar <[email protected]>

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

@@ -15,19 +15,18 @@ class Messages extends Table {
 
   /// The list of attachments, either provided by the user
   /// or generated from a command or as a result of URL scraping.
-  TextColumn get attachments =>
-      text().nullable().map(ListConverter<String>())();
+  TextColumn get attachments => text().map(ListConverter<String>())();
 
   /// The status of a sending message
-  IntColumn get status =>
-      integer().nullable().map(MessageSendingStatusConverter())();
+  IntColumn get status => integer()
+      .withDefault(const Constant(1))
+      .map(MessageSendingStatusConverter())();
 
   /// The message type
-  TextColumn get type => text().nullable()();
+  TextColumn get type => text().withDefault(const Constant('regular'))();
 
   /// The list of user mentioned in the message
-  TextColumn get mentionedUsers =>
-      text().nullable().map(ListConverter<String>())();
+  TextColumn get mentionedUsers => text().map(ListConverter<String>())();
 
   /// A map describing the count of number of every reaction
   TextColumn get reactionCounts => text().nullable().map(MapConverter<int>())();
@@ -48,16 +47,16 @@ class Messages extends Table {
   BoolColumn get showInChannel => boolean().nullable()();
 
   /// If true the message is shadowed
-  BoolColumn get shadowed => boolean().nullable()();
+  BoolColumn get shadowed => boolean().withDefault(const Constant(false))();
 
   /// A used command name.
   TextColumn get command => text().nullable()();
 
   /// The DateTime when the message was created.
-  DateTimeColumn get createdAt => dateTime()();
+  DateTimeColumn get createdAt => dateTime().withDefault(currentDateAndTime)();
 
   /// The DateTime when the message was updated last time.
-  DateTimeColumn get updatedAt => dateTime().nullable()();
+  DateTimeColumn get updatedAt => dateTime().withDefault(currentDateAndTime)();
 
   /// The DateTime when the message was deleted.
   DateTimeColumn get deletedAt => dateTime().nullable()();