--
-- 0026-trading-accounts-2.sql
--
-- #26 - maintain trading accounts for each currency
--
-- ISC License
--
-- Copyright 2023-2025 Brmlab, z.s.
-- TMA <tma+hs@jikos.cz>
--
-- Permission to use, copy, modify, and/or distribute this software
-- for any purpose with or without fee is hereby granted, provided
-- that the above copyright notice and this permission notice appear
-- in all copies.
--
-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
-- WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
-- WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
-- AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
-- CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
-- OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
-- NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
-- CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
--

-- To require fully-qualified names
SELECT pg_catalog.set_config('search_path', '', false);

DO $upgrade_block$
DECLARE
    v INTEGER;
BEGIN

IF brmbar_privileged.has_exact_schema_version(25) THEN


-- enforce uniqueness of trading accounts
CREATE UNIQUE INDEX uniq_trading_currency
    ON public.accounts (currency)
    WHERE acctype = 'trading';

-- create trading accounts for existing currencies
DO $$ 
DECLARE
    v_rec RECORD;
    v_trading INTEGER;
BEGIN
    -- Loop through all currencies
    FOR v_rec IN SELECT id, name FROM public.currencies LOOP
        SELECT public.create_account(
                'Trading account: ' || v_rec.name,
                v_rec.id,
                'trading'
                ) INTO v_trading;
    END LOOP;
END $$;


CREATE OR REPLACE FUNCTION public.create_currency(
        IN i_name public.currencies.name%TYPE
) RETURNS INTEGER LANGUAGE plpgsql AS $$
DECLARE
    r_id INTEGER;
    v_trading INTEGER;
BEGIN
    -- First the currency
    INSERT INTO public.currencies (name)
        VALUES (i_name) RETURNING id INTO r_id;
    -- Then the 'trading' account
    SELECT public.create_account(
            'Trading account: ' || i_name,
            r_id,
            'trading'
            ) INTO v_trading;
    RETURN r_id;
END
$$;


PERFORM brmbar_privileged.upgrade_schema_version_to(26);
END IF;

END;
$upgrade_block$;

-- vim: set ft=plsql sw=4 ts=4 et :