stacker.news/prisma/migrations/20240416181215_item_spam_ex.../migration.sql

45 lines
1.3 KiB
PL/PgSQL

-- exclude bios from spam detection
CREATE OR REPLACE FUNCTION item_spam(parent_id INTEGER, user_id INTEGER, within INTERVAL)
RETURNS INTEGER
LANGUAGE plpgsql
AS $$
DECLARE
repeats INTEGER;
self_replies INTEGER;
BEGIN
-- no fee escalation
IF within = interval '0' THEN
RETURN 0;
END IF;
SELECT count(*) INTO repeats
FROM "Item"
WHERE (
(parent_id IS NULL AND "parentId" IS NULL)
OR
("parentId" = parent_id AND user_id <> (SELECT i."userId" FROM "Item" i WHERE i.id = "Item"."rootId"))
)
AND "userId" = user_id
AND "bio" = 'f'
AND created_at > now_utc() - within;
IF parent_id IS NULL THEN
RETURN repeats;
END IF;
WITH RECURSIVE base AS (
SELECT "Item".id, "Item"."parentId", "Item"."userId"
FROM "Item"
WHERE id = parent_id
AND "userId" = user_id
AND created_at > now_utc() - within
AND user_id <> (SELECT i."userId" FROM "Item" i WHERE i.id = "Item"."rootId")
UNION ALL
SELECT "Item".id, "Item"."parentId", "Item"."userId"
FROM base p
JOIN "Item" ON "Item".id = p."parentId" AND "Item"."userId" = p."userId" AND "Item".created_at > now_utc() - within)
SELECT count(*) INTO self_replies FROM base;
RETURN repeats + self_replies;
END;
$$;