25 lines
559 B
MySQL
25 lines
559 B
MySQL
|
CREATE OR REPLACE FUNCTION donate(sats INTEGER, user_id INTEGER)
|
||
|
|
RETURNS INTEGER
|
||
|
|
LANGUAGE plpgsql
|
||
|
|
AS $$
|
||
|
|
DECLARE
|
||
|
|
user_sats INTEGER;
|
||
|
|
BEGIN
|
||
|
|
PERFORM ASSERT_SERIALIZED();
|
||
|
|
|
||
|
|
SELECT msats / 1000
|
||
|
|
INTO user_sats
|
||
|
|
FROM users WHERE id = user_id;
|
||
|
|
|
||
|
|
IF sats > user_sats THEN
|
||
|
|
RAISE EXCEPTION 'SN_INSUFFICIENT_FUNDS';
|
||
|
|
END IF;
|
||
|
|
|
||
|
|
UPDATE users SET msats = msats - (sats * 1000) WHERE id = user_id;
|
||
|
|
|
||
|
|
INSERT INTO "Donate" (sats, "userId", created_at, updated_at)
|
||
|
|
VALUES (sats, user_id, now_utc(), now_utc());
|
||
|
|
|
||
|
|
RETURN sats;
|
||
|
|
END;
|
||
|
|
$$;
|