Differential D8885 Diff 26922 web/cashtab/src/hooks/useBCH.js

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web/cashtab/src/hooks/useBCH.js

Show First 20 Lines • Show All 96 Lines • ▼ Show 20 Lines	const getSlpBalancesAndUtxos = async (BCH, utxos) => {
}		}

// Prevent app from treating slpUtxos as nonSlpUtxos		// Prevent app from treating slpUtxos as nonSlpUtxos
// Must enforce === false as api will occasionally return utxo.isValid === null		// Must enforce === false as api will occasionally return utxo.isValid === null
// Do not classify utxos with 546 satoshis as nonSlpUtxos as a precaution		// Do not classify utxos with 546 satoshis as nonSlpUtxos as a precaution
// Do not classify any utxos that include token information as nonSlpUtxos		// Do not classify any utxos that include token information as nonSlpUtxos
const nonSlpUtxos = hydratedUtxos.filter(		const nonSlpUtxos = hydratedUtxos.filter(
utxo =>		utxo =>
utxo.isValid === false &&		utxo.isValid === false && utxo.value !== 546 && !utxo.tokenName,
utxo.satoshis !== 546 &&
!utxo.tokenName,
);		);
const slpUtxos = hydratedUtxos.filter(utxo => utxo.isValid);		const slpUtxos = hydratedUtxos.filter(utxo => utxo.isValid);

let tokensById = {};		let tokensById = {};

slpUtxos.forEach(slpUtxo => {		slpUtxos.forEach(slpUtxo => {
let token = tokensById[slpUtxo.tokenId];		let token = tokensById[slpUtxo.tokenId];

▲ Show 20 Lines • Show All 108 Lines • ▼ Show 20 Lines	) => {
// Handle error of user having no BCH		// Handle error of user having no BCH
if (slpBalancesAndUtxos.nonSlpUtxos.length === 0) {		if (slpBalancesAndUtxos.nonSlpUtxos.length === 0) {
throw new Error(		throw new Error(
`You need some ${currency.ticker} to send ${currency.tokenTicker}`,		`You need some ${currency.ticker} to send ${currency.tokenTicker}`,
);		);
}		}
const largestBchUtxo = slpBalancesAndUtxos.nonSlpUtxos.reduce(		const largestBchUtxo = slpBalancesAndUtxos.nonSlpUtxos.reduce(
(previous, current) =>		(previous, current) =>
previous.satoshis > current.satoshis ? previous : current,		previous.value > current.value ? previous : current,
);		);

const bchECPair = BCH.ECPair.fromWIF(largestBchUtxo.wif);		const bchECPair = BCH.ECPair.fromWIF(largestBchUtxo.wif);
const tokenUtxos = slpBalancesAndUtxos.slpUtxos.filter(		const tokenUtxos = slpBalancesAndUtxos.slpUtxos.filter(
(utxo, index) => {		(utxo, index) => {
if (		if (
utxo && // UTXO is associated with a token.		utxo && // UTXO is associated with a token.
utxo.tokenId === tokenId && // UTXO matches the token ID.		utxo.tokenId === tokenId && // UTXO matches the token ID.
▲ Show 20 Lines • Show All 191 Lines • ▼ Show 20 Lines	) => {
transactionBuilder = new BCH.TransactionBuilder();		transactionBuilder = new BCH.TransactionBuilder();
else transactionBuilder = new BCH.TransactionBuilder('testnet');		else transactionBuilder = new BCH.TransactionBuilder('testnet');

const satoshisToSend = BCH.BitcoinCash.toSatoshi(value.toFixed(8));		const satoshisToSend = BCH.BitcoinCash.toSatoshi(value.toFixed(8));
let originalAmount = new BigNumber(0);		let originalAmount = new BigNumber(0);
let txFee = 0;		let txFee = 0;
for (let i = 0; i < utxos.length; i++) {		for (let i = 0; i < utxos.length; i++) {
const utxo = utxos[i];		const utxo = utxos[i];
originalAmount = originalAmount.plus(utxo.satoshis);		originalAmount = originalAmount.plus(utxo.value);
const vout = utxo.vout;		const vout = utxo.vout;
const txid = utxo.txid;		const txid = utxo.txid;
// add input with txid and index of vout		// add input with txid and index of vout
transactionBuilder.addInput(txid, vout);		transactionBuilder.addInput(txid, vout);

inputUtxos.push(utxo);		inputUtxos.push(utxo);
txFee = encodedOpReturn		txFee = encodedOpReturn
? calcFee(BCH, inputUtxos, addresses.length + 2)		? calcFee(BCH, inputUtxos, addresses.length + 2)
Show All 34 Lines	) => {
// Sign the transactions with the HD node.		// Sign the transactions with the HD node.
for (let i = 0; i < inputUtxos.length; i++) {		for (let i = 0; i < inputUtxos.length; i++) {
const utxo = inputUtxos[i];		const utxo = inputUtxos[i];
transactionBuilder.sign(		transactionBuilder.sign(
i,		i,
BCH.ECPair.fromWIF(utxo.wif),		BCH.ECPair.fromWIF(utxo.wif),
undefined,		undefined,
transactionBuilder.hashTypes.SIGHASH_ALL,		transactionBuilder.hashTypes.SIGHASH_ALL,
utxo.satoshis,		utxo.value,
);		);
}		}

// build tx		// build tx
const tx = transactionBuilder.build();		const tx = transactionBuilder.build();
// output rawhex		// output rawhex
const hex = tx.toHex();		const hex = tx.toHex();

▲ Show 20 Lines • Show All 57 Lines • Show Last 20 Lines