[Persistence] Add support for pinned messages

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

packages/stream_chat_persistence/lib/src/dao/message_dao.dart

@@ -17,6 +17,10 @@ class MessageDao extends DatabaseAccessor<MoorChatDatabase>
 
   final MoorChatDatabase _db;
 
+  $UsersTable get _users => alias(users, 'users');
+
+  $UsersTable get _pinnedByUsers => alias(users, 'pinnedByUsers');
+
   /// Removes all the messages by matching [Messages.id] in [messageIds]
   ///
   /// This will automatically delete the following linked records
@@ -34,7 +38,8 @@ class MessageDao extends DatabaseAccessor<MoorChatDatabase>
   }
 
   Future<Message> _messageFromJoinRow(TypedResult rows) async {
-    final userEntity = rows.readTable(users);
+    final userEntity = rows.readTable(_users);
+    final pinnedByEntity = rows.readTable(_pinnedByUsers);
     final msgEntity = rows.readTable(messages);
     final latestReactions = await _db.reactionDao.getReactions(msgEntity.id);
     final ownReactions = await _db.reactionDao.getReactionsByUserId(
@@ -47,6 +52,7 @@ class MessageDao extends DatabaseAccessor<MoorChatDatabase>
     }
     return msgEntity.toMessage(
       user: userEntity?.toUser(),
+      pinnedBy: pinnedByEntity?.toUser(),
       latestReactions: latestReactions,
       ownReactions: ownReactions,
       quotedMessage: quotedMessage,
@@ -56,7 +62,9 @@ class MessageDao extends DatabaseAccessor<MoorChatDatabase>
   /// Returns a single message by matching the [Messages.id] with [id]
   Future<Message> getMessageById(String id) async {
     return await (select(messages).join([
-      leftOuterJoin(users, messages.userId.equalsExp(users.id)),
+      leftOuterJoin(_users, messages.userId.equalsExp(_users.id)),
+      leftOuterJoin(
+          _pinnedByUsers, messages.pinnedByUserId.equalsExp(_pinnedByUsers.id)),
     ])
           ..where(messages.id.equals(id)))
         .map(_messageFromJoinRow)
@@ -67,7 +75,9 @@ class MessageDao extends DatabaseAccessor<MoorChatDatabase>
   /// [Messages.channelCid] with [cid]
   Future<List<Message>> getThreadMessages(String cid) async {
     return Future.wait(await (select(messages).join([
-      leftOuterJoin(users, messages.userId.equalsExp(users.id)),
+      leftOuterJoin(users, messages.userId.equalsExp(_users.id)),
+      leftOuterJoin(
+          _pinnedByUsers, messages.pinnedByUserId.equalsExp(_pinnedByUsers.id)),
     ])
           ..where(messages.channelCid.equals(cid))
           ..where(isNotNull(messages.parentId))
@@ -83,7 +93,9 @@ class MessageDao extends DatabaseAccessor<MoorChatDatabase>
     PaginationParams options,
   }) async {
     final msgList = await Future.wait(await (select(messages).join([
-      innerJoin(users, messages.userId.equalsExp(users.id)),
+      innerJoin(_users, messages.userId.equalsExp(_users.id)),
+      innerJoin(
+          _pinnedByUsers, messages.pinnedByUserId.equalsExp(_pinnedByUsers.id)),
     ])
           ..where(messages.parentId.equals(parentId))
           ..orderBy([OrderingTerm.asc(messages.createdAt)]))
@@ -104,7 +116,9 @@ class MessageDao extends DatabaseAccessor<MoorChatDatabase>
     PaginationParams messagePagination,
   }) async {
     final msgList = await Future.wait(await (select(messages).join([
-      leftOuterJoin(users, messages.userId.equalsExp(users.id)),
+      leftOuterJoin(_users, messages.userId.equalsExp(_users.id)),
+      leftOuterJoin(
+          _pinnedByUsers, messages.pinnedByUserId.equalsExp(_pinnedByUsers.id)),
     ])
           ..where(messages.channelCid.equals(cid))
           ..where(