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--
-- This file is part of TALER
-- Copyright (C) 2014--2022 Taler Systems SA
--
-- TALER is free software; you can redistribute it and/or modify it under the
-- terms of the GNU General Public License as published by the Free Software
-- Foundation; either version 3, or (at your option) any later version.
--
-- TALER is distributed in the hope that it will be useful, but WITHOUT ANY
-- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
-- A PARTICULAR PURPOSE. See the GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License along with
-- TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
--
CREATE OR REPLACE FUNCTION exchange_do_batch_reserves_update(
IN in_reserve_pub BYTEA,
IN in_expiration_date INT8,
IN in_wire_ref INT8,
IN in_credit_val INT8,
IN in_credit_frac INT4,
IN in_exchange_account_name VARCHAR,
IN in_wire_source_h_payto BYTEA,
IN in_notify text,
OUT out_duplicate BOOLEAN)
LANGUAGE plpgsql
AS $$
BEGIN
INSERT INTO reserves_in
(reserve_pub
,wire_reference
,credit_val
,credit_frac
,exchange_account_section
,wire_source_h_payto
,execution_date)
VALUES
(in_reserve_pub
,in_wire_ref
,in_credit_val
,in_credit_frac
,in_exchange_account_name
,in_wire_source_h_payto
,in_expiration_date)
ON CONFLICT DO NOTHING;
IF FOUND
THEN
--IF THE INSERTION WAS A SUCCESS IT MEANS NO DUPLICATED TRANSACTION
out_duplicate = FALSE;
UPDATE reserves
SET
current_balance_frac = current_balance_frac+in_credit_frac
- CASE
WHEN current_balance_frac + in_credit_frac >= 100000000
THEN 100000000
ELSE 1
END
,current_balance_val = current_balance_val+in_credit_val
+ CASE
WHEN current_balance_frac + in_credit_frac >= 100000000
THEN 1
ELSE 0
END
,expiration_date=GREATEST(expiration_date,in_expiration_date)
,gc_date=GREATEST(gc_date,in_expiration_date)
WHERE reserve_pub=in_reserve_pub;
PERFORM pg_notify(in_notify, NULL);
ELSE
out_duplicate = TRUE;
END IF;
RETURN;
END $$;
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