+-- Creating a new trigger for when comment.deleted is updated
+
+create or replace function post_aggregates_comment_deleted()
+returns trigger language plpgsql
+as $$
+begin
+ IF NEW.deleted = TRUE THEN
+ update post_aggregates pa
+ set comments = comments - 1
+ where pa.post_id = NEW.post_id;
+ ELSE
+ update post_aggregates pa
+ set comments = comments + 1
+ where pa.post_id = NEW.post_id;
+ END IF;
+ return null;
+end $$;
+
+create trigger post_aggregates_comment_set_deleted
+after update of deleted on comment
+for each row
+execute procedure post_aggregates_comment_deleted();
+
+-- Fix issue with being able to necro-bump your own post
+create or replace function post_aggregates_comment_count()
+returns trigger language plpgsql
+as $$
+begin
+ IF (TG_OP = 'INSERT') THEN
+ update post_aggregates pa
+ set comments = comments + 1,
+ newest_comment_time = NEW.published
+ where pa.post_id = NEW.post_id;
+
+ -- A 2 day necro-bump limit
+ update post_aggregates pa
+ set newest_comment_time_necro = NEW.published
+ from post p
+ where pa.post_id = p.id
+ and pa.post_id = NEW.post_id
+ -- Fix issue with being able to necro-bump your own post
+ and NEW.creator_id != p.creator_id
+ and pa.published > ('now'::timestamp - '2 days'::interval);
+
+ ELSIF (TG_OP = 'DELETE') THEN
+ -- Join to post because that post may not exist anymore
+ update post_aggregates pa
+ set comments = comments - 1
+ from post p
+ where pa.post_id = p.id
+ and pa.post_id = OLD.post_id;
+ ELSIF (TG_OP = 'UPDATE') THEN
+ -- Join to post because that post may not exist anymore
+ update post_aggregates pa
+ set comments = comments - 1
+ from post p
+ where pa.post_id = p.id
+ and pa.post_id = OLD.post_id;
+ END IF;
+ return null;
+end $$;