mirror of
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82 lines
2.5 KiB
MySQL
82 lines
2.5 KiB
MySQL
--
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-- 0015-shop-buy-for-cash.sql
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--
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-- #15 - stored function for cash-based stock replenishment transaction
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--
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-- ISC License
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--
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-- Copyright 2023-2025 Brmlab, z.s.
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-- TMA <tma+hs@jikos.cz>
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--
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-- Permission to use, copy, modify, and/or distribute this software
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-- for any purpose with or without fee is hereby granted, provided
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-- that the above copyright notice and this permission notice appear
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-- in all copies.
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--
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-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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-- WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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-- WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
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-- AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
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-- CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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-- OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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-- NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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-- CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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--
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-- To require fully-qualified names
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SELECT pg_catalog.set_config('search_path', '', false);
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DO $upgrade_block$
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BEGIN
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IF brmbar_privileged.has_exact_schema_version(9) THEN
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CREATE OR REPLACE FUNCTION public.buy_for_cash(
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i_cash_account_id public.accounts.id%TYPE,
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i_item_id public.accounts.id%TYPE,
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i_amount INTEGER,
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i_target_currency_id public.currencies.id%TYPE,
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i_item_name TEXT
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) RETURNS NUMERIC
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LANGUAGE plpgsql
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AS $$
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DECLARE
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v_buy_rate NUMERIC;
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v_cost NUMERIC;
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v_transaction_id public.transactions.id%TYPE;
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BEGIN
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-- this could fail and it would generate exception in python
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-- FIXME: convert v_buy_rate < 0 into python exception
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v_buy_rate := public.find_buy_rate(i_item_id, i_target_currency_id);
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-- this could fail and it would generate exception in python, even though it is not used
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--v_sell_rate := public.find_sell_rate(i_item_id, i_target_currency_id);
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-- Calculate cost and profit
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v_cost := i_amount * v_buy_rate;
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-- Create a new transaction
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v_transaction_id := brmbar_privileged.create_transaction(NULL,
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'BrmBar stock replenishment of ' || i_amount || 'x ' || i_item_name || ' for cash');
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-- the item
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INSERT INTO public.transaction_splits (transaction, side, account, amount, memo)
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VALUES (i_transaction_id, 'debit', i_item_id, i_amount,
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'Cash');
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-- the cash
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INSERT INTO public.transaction_splits (transaction, side, account, amount, memo)
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VALUES (i_transaction_id, 'credit', i_cash_account_id, v_cost,
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i_item_name);
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-- Return the cost
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RETURN v_cost;
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END;
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$$;
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PERFORM brmbar_privileged.upgrade_schema_version_to(10);
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END IF;
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END;
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$upgrade_block$;
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-- vim: set ft=plsql :
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