+-- 2023-06-19-120700_no_double_deletion/up.sql
+create or replace function was_removed_or_deleted(TG_OP text, OLD record, NEW record)
+RETURNS boolean
+LANGUAGE plpgsql
+as $$
+ begin
+ IF (TG_OP = 'INSERT') THEN
+ return false;
+ end if;
+
+ IF (TG_OP = 'DELETE' AND OLD.deleted = 'f' AND OLD.removed = 'f') THEN
+ return true;
+ end if;
+
+ return TG_OP = 'UPDATE' AND (
+ (OLD.deleted = 'f' AND NEW.deleted = 't') OR
+ (OLD.removed = 'f' AND NEW.removed = 't')
+ );
+END $$;
+
+-- 2022-04-04-183652_update_community_aggregates_on_soft_delete/up.sql
+create or replace function was_restored_or_created(TG_OP text, OLD record, NEW record)
+ RETURNS boolean
+ LANGUAGE plpgsql
+as $$
+begin
+ IF (TG_OP = 'DELETE') THEN
+ return false;
+ end if;
+
+ IF (TG_OP = 'INSERT') THEN
+ return true;
+ end if;
+
+ return TG_OP = 'UPDATE' AND (
+ (OLD.deleted = 't' AND NEW.deleted = 'f') OR
+ (OLD.removed = 't' AND NEW.removed = 'f')
+ );
+END $$;
+
+-- 2021-08-02-002342_comment_count_fixes/up.sql
+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();
+
+create or replace function post_aggregates_comment_count()
+returns trigger language plpgsql
+as $$
+begin
+ IF (TG_OP = 'INSERT') THEN
+ update post_aggregates pa
+ set comments = comments + 1,
+ newest_comment_time = NEW.published
+ where pa.post_id = NEW.post_id;
+
+ -- A 2 day necro-bump limit
+ update post_aggregates pa
+ set newest_comment_time_necro = NEW.published
+ from post p
+ where pa.post_id = p.id
+ and pa.post_id = NEW.post_id
+ -- Fix issue with being able to necro-bump your own post
+ and NEW.creator_id != p.creator_id
+ and pa.published > ('now'::timestamp - '2 days'::interval);
+
+ ELSIF (TG_OP = 'DELETE') THEN
+ -- Join to post because that post may not exist anymore
+ update post_aggregates pa
+ set comments = comments - 1
+ from post p
+ where pa.post_id = p.id
+ and pa.post_id = OLD.post_id;
+ ELSIF (TG_OP = 'UPDATE') THEN
+ -- Join to post because that post may not exist anymore
+ update post_aggregates pa
+ set comments = comments - 1
+ from post p
+ where pa.post_id = p.id
+ and pa.post_id = OLD.post_id;
+ END IF;
+ return null;
+end $$;
+
+-- 2020-12-10-152350_create_post_aggregates/up.sql
+create or replace trigger post_aggregates_comment_count
+after insert or delete on comment
+for each row
+execute procedure post_aggregates_comment_count();