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