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117 lines
2.8 KiB
117 lines
2.8 KiB
import ethUtil from 'ethereumjs-util'
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import MethodRegistry from 'eth-method-registry'
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import abi from 'human-standard-token-abi'
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import abiDecoder from 'abi-decoder'
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import {
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TOKEN_METHOD_TRANSFER,
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TOKEN_METHOD_APPROVE,
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TOKEN_METHOD_TRANSFER_FROM,
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SEND_ETHER_ACTION_KEY,
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DEPLOY_CONTRACT_ACTION_KEY,
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APPROVE_ACTION_KEY,
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SEND_TOKEN_ACTION_KEY,
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TRANSFER_FROM_ACTION_KEY,
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SIGNATURE_REQUEST_KEY,
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UNKNOWN_FUNCTION_KEY,
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} from '../constants/transactions'
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import { addCurrencies } from '../conversion-util'
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abiDecoder.addABI(abi)
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export function getTokenData (data = {}) {
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return abiDecoder.decodeMethod(data)
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}
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const registry = new MethodRegistry({ provider: global.ethereumProvider })
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export async function getMethodData (data = {}) {
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const prefixedData = ethUtil.addHexPrefix(data)
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const fourBytePrefix = prefixedData.slice(0, 10)
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const sig = await registry.lookup(fourBytePrefix)
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const parsedResult = registry.parse(sig)
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return {
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name: parsedResult.name,
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params: parsedResult.args,
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}
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}
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export function isConfirmDeployContract (txData = {}) {
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const { txParams = {} } = txData
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return !txParams.to
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}
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export async function getTransactionActionKey (transaction, methodData) {
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const { txParams: { data, to } = {}, msgParams } = transaction
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if (msgParams) {
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return SIGNATURE_REQUEST_KEY
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}
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if (isConfirmDeployContract(transaction)) {
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return DEPLOY_CONTRACT_ACTION_KEY
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}
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if (data) {
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const toSmartContract = await isSmartContractAddress(to)
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if (!toSmartContract) {
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return SEND_ETHER_ACTION_KEY
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}
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const { name } = methodData
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const methodName = name && name.toLowerCase()
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if (!methodName) {
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return UNKNOWN_FUNCTION_KEY
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}
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switch (methodName) {
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case TOKEN_METHOD_TRANSFER:
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return SEND_TOKEN_ACTION_KEY
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case TOKEN_METHOD_APPROVE:
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return APPROVE_ACTION_KEY
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case TOKEN_METHOD_TRANSFER_FROM:
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return TRANSFER_FROM_ACTION_KEY
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default:
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return name
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}
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} else {
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return SEND_ETHER_ACTION_KEY
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}
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}
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export function getLatestSubmittedTxWithNonce (transactions = [], nonce = '0x0') {
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if (!transactions.length) {
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return {}
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}
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return transactions.reduce((acc, current) => {
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const { submittedTime, txParams: { nonce: currentNonce } = {} } = current
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if (currentNonce === nonce) {
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return acc.submittedTime
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? submittedTime > acc.submittedTime ? current : acc
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: current
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} else {
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return acc
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}
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}, {})
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}
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export async function isSmartContractAddress (address) {
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const code = await global.eth.getCode(address)
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return code && code !== '0x'
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}
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export function addHex (...args) {
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const total = args.reduce((acc, base) => {
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return addCurrencies(acc, base, {
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toNumericBase: 'hex',
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})
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})
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return ethUtil.addHexPrefix(total)
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}
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