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/*
This file is part of GNU Taler
(C) 2021 Taler Systems S.A.
GNU 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.
GNU 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
GNU Taler; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
*/
import { amountFractionalBase, AmountJson, Amounts } from "@gnu-taler/taler-util";
import { MerchantBackend } from "../declaration.js";
/**
* sums two prices,
* @param one
* @param two
* @returns
*/
const sumPrices = (one: string, two: string) => {
const [currency, valueOne] = one.split(':')
const [, valueTwo] = two.split(':')
return `${currency}:${parseInt(valueOne, 10) + parseInt(valueTwo, 10)}`
}
/**
* merge refund with the same description and a difference less than one minute
* @param prev list of refunds that will hold the merged refunds
* @param cur new refund to add to the list
* @returns list with the new refund, may be merged with the last
*/
export function mergeRefunds(prev: MerchantBackend.Orders.RefundDetails[], cur: MerchantBackend.Orders.RefundDetails) {
let tail;
if (prev.length === 0 || //empty list
cur.timestamp.t_s === 'never' || //current does not have timestamp
(tail = prev[prev.length - 1]).timestamp.t_s === 'never' || // last does not have timestamp
cur.reason !== tail.reason || //different reason
cur.pending !== tail.pending || //different pending state
Math.abs(cur.timestamp.t_s - tail.timestamp.t_s) > 1000 * 60) {//more than 1 minute difference
prev.push(cur)
return prev
}
prev[prev.length - 1] = {
...tail,
amount: sumPrices(tail.amount, cur.amount)
}
return prev
}
export const rate = (one: string, two: string) => {
const a = Amounts.parseOrThrow(one)
const b = Amounts.parseOrThrow(two)
const af = toFloat(a)
const bf = toFloat(b)
if (bf === 0) return 0
return af / bf
}
function toFloat(amount: AmountJson) {
return amount.value + (amount.fraction / amountFractionalBase);
}
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