using presence service

resolvers/following.py

@@ -6,6 +6,9 @@ from resolvers.reactions import reactions_follow, reactions_unfollow
 from resolvers.topics import topic_follow, topic_unfollow
 from services.following import FollowingManager, FollowingResult
 from resolvers.community import community_follow, community_unfollow
+from services.presence import notify_follower
+from orm.user import Author
+from services.db import local_session
 
 
 @mutation.field("follow")
@@ -18,6 +21,10 @@ async def follow(_, info, what, slug):
             if author_follow(auth.user_id, slug):
                 result = FollowingResult("NEW", "author", slug)
                 await FollowingManager.push("author", result)
+                with local_session() as session:
+                    author_id = session.query(Author.id).where(Author.slug == slug).one()
+                    follower = session.query()
+                    notify_follower(follower.dict(), author_id)
         elif what == "TOPIC":
             if topic_follow(auth.user_id, slug):
                 result = FollowingResult("NEW", "topic", slug)