81 lines
2.6 KiB
MySQL
81 lines
2.6 KiB
MySQL
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-- Fix for duplicated decrementations when both `deleted` and `removed` fields are set subsequently
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create or replace function was_removed_or_deleted(TG_OP text, OLD record, NEW record)
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RETURNS boolean
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LANGUAGE plpgsql
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as $$
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begin
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IF (TG_OP = 'INSERT') THEN
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return false;
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end if;
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IF (TG_OP = 'DELETE' AND OLD.deleted = 'f' AND OLD.removed = 'f') THEN
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return true;
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end if;
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return TG_OP = 'UPDATE' AND OLD.deleted = 'f' AND OLD.removed = 'f' AND (
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NEW.deleted = 't' OR NEW.removed = 't'
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);
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END $$;
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create or replace function was_restored_or_created(TG_OP text, OLD record, NEW record)
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RETURNS boolean
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LANGUAGE plpgsql
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as $$
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begin
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IF (TG_OP = 'DELETE') THEN
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return false;
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end if;
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IF (TG_OP = 'INSERT') THEN
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return true;
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end if;
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return TG_OP = 'UPDATE' AND NEW.deleted = 'f' AND NEW.removed = 'f' AND (
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OLD.deleted = 't' OR OLD.removed = 't'
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);
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END $$;
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-- Fix for post's comment count not updating after setting `removed` to 't'
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drop trigger if exists post_aggregates_comment_set_deleted on comment;
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drop function post_aggregates_comment_deleted();
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create or replace function post_aggregates_comment_count()
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returns trigger language plpgsql
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as $$
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begin
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-- Check for post existence - it may not exist anymore
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IF TG_OP = 'INSERT' OR EXISTS (
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select 1 from post p where p.id = OLD.post_id
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) THEN
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IF (was_restored_or_created(TG_OP, OLD, NEW)) THEN
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update post_aggregates pa
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set comments = comments + 1 where pa.post_id = NEW.post_id;
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ELSIF (was_removed_or_deleted(TG_OP, OLD, NEW)) THEN
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update post_aggregates pa
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set comments = comments - 1 where pa.post_id = OLD.post_id;
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END IF;
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END IF;
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IF TG_OP = 'INSERT' THEN
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update post_aggregates pa
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set newest_comment_time = NEW.published
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where pa.post_id = NEW.post_id;
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-- A 2 day necro-bump limit
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update post_aggregates pa
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set newest_comment_time_necro = NEW.published
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from post p
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where pa.post_id = p.id
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and pa.post_id = NEW.post_id
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-- Fix issue with being able to necro-bump your own post
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and NEW.creator_id != p.creator_id
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and pa.published > ('now'::timestamp - '2 days'::interval);
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END IF;
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return null;
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end $$;
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create or replace trigger post_aggregates_comment_count
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after insert or delete or update of removed, deleted on comment
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for each row
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execute procedure post_aggregates_comment_count();
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