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