Differential D11617 Diff 34351 web/cashtab/src/utils/cashMethods.js

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web/cashtab/src/utils/cashMethods.js

	import { currency } from 'components/Common/Ticker';			import { currency } from 'components/Common/Ticker';
	import {			import {
	isValidXecAddress,			isValidXecAddress,
	isValidEtokenAddress,			isValidEtokenAddress,
	isValidBchApiUtxoObject,			isValidBchApiUtxoObject,
	isValidContactList,			isValidContactList,
	} from 'utils/validation';			} from 'utils/validation';
	import BigNumber from 'bignumber.js';			import BigNumber from 'bignumber.js';
	import cashaddr from 'ecashaddrjs';			import cashaddr from 'ecashaddrjs';

				/*
				* Parse the total value of a send XEC tx and checks whether it is more than dust
				* One to many: isOneToMany is true, singleSendValue is null
				* One to one: isOneToMany is false, destinationAddressAndValueArray is null
				* Returns the aggregate send value in BigNumber format
				*/
				export const parseXecSendValue = (
				isOneToMany,
				singleSendValue,
				destinationAddressAndValueArray,
				) => {
				let value = new BigNumber(0);

				try {
				if (isOneToMany) {
				// this is a one to many XEC transaction
				if (
				!destinationAddressAndValueArray \|\|
				!destinationAddressAndValueArray.length
				) {
				throw new Error('Invalid destinationAddressAndValueArray');
				}
				const arrayLength = destinationAddressAndValueArray.length;
				for (let i = 0; i < arrayLength; i++) {
				// add the total value being sent in this array of recipients
				// each array row is: 'eCash address, send value'
				value = BigNumber.sum(
				value,
				new BigNumber(
				destinationAddressAndValueArray[i].split(',')[1],
				),
				);
				}
				} else {
				// this is a one to one XEC transaction then check singleSendValue
				// note: one to many transactions won't be sending a singleSendValue param

				if (!singleSendValue) {
				throw new Error('Invalid singleSendValue');
				}

				value = new BigNumber(singleSendValue);
				}
				// If user is attempting to send an aggregate value that is less than minimum accepted by the backend
				if (
				value.lt(
				new BigNumber(
				fromSmallestDenomination(currency.dustSats).toString(),
				),
				)
				) {
				// Throw the same error given by the backend attempting to broadcast such a tx
				throw new Error('dust');
				}
				} catch (err) {
				console.log('Error in parseXecSendValue: ' + err);
				throw err;
				}
				return value;
				};

	export function parseOpReturn(hexStr) {			export function parseOpReturn(hexStr) {
	if (			if (
	!hexStr \|\|			!hexStr \|\|
	typeof hexStr !== 'string' \|\|			typeof hexStr !== 'string' \|\|
	hexStr.substring(0, 2) !== currency.opReturn.opReturnPrefixHex			hexStr.substring(0, 2) !== currency.opReturn.opReturnPrefixHex
	) {			) {
	return false;			return false;
	}			}
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