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57 lines
1.5 KiB
57 lines
1.5 KiB
import ethUtil from 'ethereumjs-util'
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import MethodRegistry from 'eth-method-registry'
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const registry = new MethodRegistry({ provider: global.ethereumProvider })
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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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} from '../constants/transactions'
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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 function getTransactionActionKey (transaction, methodData) {
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const { txParams: { data } = {} } = transaction
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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 { name } = methodData
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const methodName = name && name.toLowerCase()
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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 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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