stacker.news/prisma/migrations/20210914173926_item_boost/migration.sql

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2021-09-14 17:55:59 +00:00
-- make sure we nuke the old versions
DROP FUNCTION create_item(text,text,text,integer,integer);
CREATE OR REPLACE FUNCTION create_item(title TEXT, url TEXT, text TEXT, boost INTEGER, parent_id INTEGER, user_id INTEGER)
RETURNS "Item"
LANGUAGE plpgsql
AS $$
DECLARE
user_sats INTEGER;
free_posts INTEGER;
free_comments INTEGER;
freebie BOOLEAN;
item "Item";
BEGIN
PERFORM ASSERT_SERIALIZED();
SELECT (msats / 1000), "freePosts", "freeComments"
INTO user_sats, free_posts, free_comments
FROM users WHERE id = user_id;
freebie := (parent_id IS NULL AND free_posts > 0) OR (parent_id IS NOT NULL AND free_comments > 0);
IF NOT freebie AND 1 > user_sats THEN
RAISE EXCEPTION 'SN_INSUFFICIENT_FUNDS';
END IF;
INSERT INTO "Item" (title, url, text, "userId", "parentId", created_at, updated_at)
VALUES (title, url, text, user_id, parent_id, now_utc(), now_utc()) RETURNING * INTO item;
IF freebie THEN
IF parent_id IS NULL THEN
UPDATE users SET "freePosts" = "freePosts" - 1 WHERE id = user_id;
ELSE
UPDATE users SET "freeComments" = "freeComments" - 1 WHERE id = user_id;
END IF;
ELSE
UPDATE users SET msats = msats - 1000 WHERE id = user_id;
INSERT INTO "ItemAct" (sats, "itemId", "userId", act, created_at, updated_at)
VALUES (1, item.id, user_id, 'VOTE', now_utc(), now_utc());
END IF;
IF boost > 0 THEN
PERFORM item_act(item.id, user_id, 'BOOST', boost);
END IF;
RETURN item;
END;
$$;