31 lines
1.1 KiB
TypeScript
31 lines
1.1 KiB
TypeScript
import { decimalFromString, formatDecimal } from '../../../../common/decimal';
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import type { Money } from '../../../../common/money.types';
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const MIN_KOPECKS = -9_223_372_036_854_775_808n;
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const MAX_KOPECKS = 9_223_372_036_854_775_807n;
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export function parseRubMoney(money: Money, positive = false): bigint {
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if (
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money?.currency !== 'RUB' ||
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typeof money.value !== 'string' ||
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money.value !== money.value.trim()
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)
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throw new TypeError('Expected RUB money with a decimal string');
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const amount = decimalFromString(money.value);
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if (amount.scale > 2)
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throw new RangeError('RUB money supports at most two decimal places');
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const kopecks = amount.value * 10n ** BigInt(2 - amount.scale);
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if (kopecks < MIN_KOPECKS || kopecks > MAX_KOPECKS)
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throw new RangeError('RUB money is outside the signed 64-bit range');
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if (positive && kopecks <= 0n)
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throw new RangeError('Operation amount must be positive');
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return kopecks;
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}
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export function rubMoney(kopecks: bigint): Money {
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return {
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currency: 'RUB',
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value: formatDecimal({ value: kopecks, scale: 2 }),
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};
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}
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