35 lines
1.3 KiB
PL/PgSQL
35 lines
1.3 KiB
PL/PgSQL
CREATE OR REPLACE FUNCTION create_invoice(hash TEXT, bolt11 TEXT, expires_at timestamp(3) without time zone, msats_req INTEGER, user_id INTEGER)
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RETURNS "Invoice"
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LANGUAGE plpgsql
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AS $$
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DECLARE
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invoice "Invoice";
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limit_reached BOOLEAN;
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too_much BOOLEAN;
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BEGIN
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PERFORM ASSERT_SERIALIZED();
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SELECT count(*) >= 10, sum("msatsRequested")+max(users.msats)+msats_req > 1000000000 INTO limit_reached, too_much
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FROM "Invoice"
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JOIN users on "userId" = users.id
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WHERE "userId" = user_id AND "expiresAt" > now_utc() AND "confirmedAt" is null AND cancelled = false;
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-- prevent more than 10 pending invoices
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IF limit_reached THEN
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RAISE EXCEPTION 'SN_INV_PENDING_LIMIT';
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END IF;
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-- prevent pending invoices + msats from exceeding 1,000,000 sats
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IF too_much THEN
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RAISE EXCEPTION 'SN_INV_EXCEED_BALANCE';
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END IF;
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INSERT INTO "Invoice" (hash, bolt11, "expiresAt", "msatsRequested", "userId", created_at, updated_at)
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VALUES (hash, bolt11, expires_at, msats_req, user_id, now_utc(), now_utc()) RETURNING * INTO invoice;
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INSERT INTO pgboss.job (name, data, retrylimit, retrybackoff, startafter)
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VALUES ('checkInvoice', jsonb_build_object('hash', hash), 21, true, now() + interval '10 seconds');
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RETURN invoice;
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END;
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$$; |