import ethAbi from 'ethereumjs-abi' import ethUtil from 'ethereumjs-util' import { TOKEN_TRANSFER_FUNCTION_SIGNATURE } from '../send.constants' export function addHexPrefixToObjectValues (obj) { return Object.keys(obj).reduce((newObj, key) => { return { ...newObj, [key]: ethUtil.addHexPrefix(obj[key]) } }, {}) } export function constructTxParams ({ selectedToken, data, to, amount, from, gas, gasPrice }) { const txParams = { data, from, value: '0', gas, gasPrice, } if (!selectedToken) { txParams.value = amount txParams.to = to } return addHexPrefixToObjectValues(txParams) } export function constructUpdatedTx ({ amount, data, editingTransactionId, from, gas, gasPrice, selectedToken, to, unapprovedTxs, }) { const unapprovedTx = unapprovedTxs[editingTransactionId] const txParamsData = unapprovedTx.txParams.data ? unapprovedTx.txParams.data : data const editingTx = { ...unapprovedTx, txParams: Object.assign( unapprovedTx.txParams, addHexPrefixToObjectValues({ data: txParamsData, to, from, gas, gasPrice, value: amount, }) ), } if (selectedToken) { const data = TOKEN_TRANSFER_FUNCTION_SIGNATURE + Array.prototype.map.call( ethAbi.rawEncode(['address', 'uint256'], [to, ethUtil.addHexPrefix(amount)]), x => ('00' + x.toString(16)).slice(-2) ).join('') Object.assign(editingTx.txParams, addHexPrefixToObjectValues({ value: '0', to: selectedToken.address, data, })) } if (typeof editingTx.txParams.data === 'undefined') { delete editingTx.txParams.data } return editingTx } export function addressIsNew (toAccounts, newAddress) { const newAddressNormalized = newAddress.toLowerCase() const foundMatching = toAccounts.some(({ address }) => address.toLowerCase() === newAddressNormalized) return !foundMatching }