Differential D11488 Diff 33580 web/cashtab/src/hooks/useBCH.js

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web/cashtab/src/hooks/useBCH.js

import BigNumber from 'bignumber.js';		import BigNumber from 'bignumber.js';
import { currency } from 'components/Common/Ticker';		import { currency } from 'components/Common/Ticker';
import { isValidTokenStats } from 'utils/validation';		import { isValidTokenStats } from 'utils/validation';
import SlpWallet from 'minimal-slp-wallet';		import SlpWallet from 'minimal-slp-wallet';
import {		import {
toSmallestDenomination,		toSmallestDenomination,
fromSmallestDenomination,		fromSmallestDenomination,
batchArray,		batchArray,
flattenBatchedHydratedUtxos,		flattenBatchedHydratedUtxos,
isValidStoredWallet,		isValidStoredWallet,
checkNullUtxosForTokenStatus,		checkNullUtxosForTokenStatus,
confirmNonEtokenUtxos,		confirmNonEtokenUtxos,
convertToEncryptStruct,		convertToEncryptStruct,
getPublicKey,		getPublicKey,
parseOpReturn,		parseOpReturn,
		convertToEcashPrefix,
} from 'utils/cashMethods';		} from 'utils/cashMethods';
import cashaddr from 'ecashaddrjs';		import cashaddr from 'ecashaddrjs';
import ecies from 'ecies-lite';		import ecies from 'ecies-lite';
import wif from 'wif';		import wif from 'wif';

		const XECJS = require('../xec-js');
		// @TODO: initialize this to app startup in useWallet
		const xecjs = new XECJS({ restURL: 'https://rest.kingbch.com/v4' });

export default function useBCH() {		export default function useBCH() {
const SEND_BCH_ERRORS = {		const SEND_BCH_ERRORS = {
INSUFFICIENT_FUNDS: 0,		INSUFFICIENT_FUNDS: 0,
NETWORK_ERROR: 1,		NETWORK_ERROR: 1,
INSUFFICIENT_PRIORITY: 66, // ~insufficient fee		INSUFFICIENT_PRIORITY: 66, // ~insufficient fee
DOUBLE_SPENDING: 18,		DOUBLE_SPENDING: 18,
MAX_UNCONFIRMED_TXS: 64,		MAX_UNCONFIRMED_TXS: 64,
};		};
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}		}
}		}

const inputUtxos = [];		const inputUtxos = [];
let transactionBuilder;		let transactionBuilder;

// instance of transaction builder		// instance of transaction builder
if (process.env.REACT_APP_NETWORK === `mainnet`)		if (process.env.REACT_APP_NETWORK === `mainnet`)
transactionBuilder = new BCH.TransactionBuilder();		transactionBuilder = new xecjs.TransactionBuilder();
else transactionBuilder = new BCH.TransactionBuilder('testnet');		else transactionBuilder = new xecjs.TransactionBuilder('testnet');

const satoshisToSend = toSmallestDenomination(value);		const satoshisToSend = toSmallestDenomination(value);

// Throw validation error if toSmallestDenomination returns false		// Throw validation error if toSmallestDenomination returns false
if (!satoshisToSend) {		if (!satoshisToSend) {
const error = new Error(		const error = new Error(
`Invalid decimal places for send amount`,		`Invalid decimal places for send amount`,
);		);
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BCH.Address.isCashAddress(REMAINDER_ADDR);		BCH.Address.isCashAddress(REMAINDER_ADDR);
} catch (err) {		} catch (err) {
isValidChangeAddress = false;		isValidChangeAddress = false;
}		}
if (!isValidChangeAddress) {		if (!isValidChangeAddress) {
REMAINDER_ADDR = wallet.Path1899.cashAddress;		REMAINDER_ADDR = wallet.Path1899.cashAddress;
}		}

		// ensure change address is always in eCash format after validation
		REMAINDER_ADDR = convertToEcashPrefix(REMAINDER_ADDR);

// amount to send back to the remainder address.		// amount to send back to the remainder address.
const remainder = originalAmount.minus(satoshisToSend).minus(txFee);		const remainder = originalAmount.minus(satoshisToSend).minus(txFee);

if (remainder.lt(0)) {		if (remainder.lt(0)) {
const error = new Error(`Insufficient funds`);		const error = new Error(`Insufficient funds`);
error.code = SEND_BCH_ERRORS.INSUFFICIENT_FUNDS;		error.code = SEND_BCH_ERRORS.INSUFFICIENT_FUNDS;
throw error;		throw error;
}		}

if (isOneToMany) {		if (isOneToMany) {
// for one to many mode, add the multiple outputs from the array		// for one to many mode, add the multiple outputs from the array
let arrayLength = destinationAddressAndValueArray.length;		let arrayLength = destinationAddressAndValueArray.length;
for (let i = 0; i < arrayLength; i++) {		for (let i = 0; i < arrayLength; i++) {
// add each send tx from the array as an output		// add each send tx from the array as an output
let outputAddress =		let outputAddress =
destinationAddressAndValueArray[i].split(',')[0];		destinationAddressAndValueArray[i].split(',')[0];
let outputValue = new BigNumber(		let outputValue = new BigNumber(
destinationAddressAndValueArray[i].split(',')[1],		destinationAddressAndValueArray[i].split(',')[1],
);		);
transactionBuilder.addOutput(		transactionBuilder.addOutput(
BCH.Address.toCashAddress(outputAddress),		outputAddress,
parseInt(toSmallestDenomination(outputValue)),		parseInt(toSmallestDenomination(outputValue)),
);		);
}		}
} else {		} else {
// for one to one mode, add output w/ single address and amount to send		// for one to one mode, add output w/ single address and amount to send
transactionBuilder.addOutput(		transactionBuilder.addOutput(
BCH.Address.toCashAddress(destinationAddress),		destinationAddress,
parseInt(toSmallestDenomination(value)),		parseInt(toSmallestDenomination(value)),
);		);
}		}

if (remainder.gte(new BigNumber(currency.dustSats))) {		if (remainder.gte(new BigNumber(currency.dustSats))) {
transactionBuilder.addOutput(		transactionBuilder.addOutput(
REMAINDER_ADDR,		REMAINDER_ADDR,
parseInt(remainder),		parseInt(remainder),
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