import { useDispatch, useSelector } from 'react-redux'; import { useCallback } from 'react'; import { addHexPrefix } from 'ethereumjs-util'; import { showModal, showSidebar } from '../store/actions'; import { isBalanceSufficient } from '../pages/send/send.utils'; import { getHexGasTotal, increaseLastGasPrice, } from '../helpers/utils/confirm-tx.util'; import { getConversionRate, getSelectedAccount } from '../selectors'; import { setCustomGasLimit, setCustomGasPriceForRetry, } from '../ducks/gas/gas.duck'; import { multiplyCurrencies } from '../helpers/utils/conversion-util'; /** * Determine whether a transaction can be cancelled and provide a method to * kick off the process of cancellation. * * Provides a reusable hook that, given a transactionGroup, will return * whether or not the account has enough funds to cover the gas cancellation * fee, and a method for beginning the cancellation process * @param {Object} transactionGroup * @return {[boolean, Function]} */ export function useCancelTransaction(transactionGroup) { const { primaryTransaction } = transactionGroup; const gasPrice = primaryTransaction.txParams?.gasPrice?.startsWith('-') ? '0x0' : primaryTransaction.txParams?.gasPrice; const transaction = primaryTransaction; const dispatch = useDispatch(); const selectedAccount = useSelector(getSelectedAccount); const conversionRate = useSelector(getConversionRate); const defaultNewGasPrice = addHexPrefix( multiplyCurrencies(gasPrice, 1.1, { toNumericBase: 'hex', multiplicandBase: 16, multiplierBase: 10, }), ); const cancelTransaction = useCallback( (event) => { event.stopPropagation(); dispatch(setCustomGasLimit('0x5208')); dispatch(setCustomGasPriceForRetry(defaultNewGasPrice)); const tx = { ...transaction, txParams: { ...transaction.txParams, gas: '0x5208', value: '0x0', }, }; return dispatch( showSidebar({ transitionName: 'sidebar-left', type: 'customize-gas', props: { transaction: tx, onSubmit: (newGasLimit, newGasPrice) => { const userCustomizedGasTotal = getHexGasTotal({ gasPrice: newGasPrice, gasLimit: newGasLimit, }); dispatch( showModal({ name: 'CANCEL_TRANSACTION', newGasFee: userCustomizedGasTotal, transactionId: transaction.id, defaultNewGasPrice: newGasPrice, gasLimit: newGasLimit, }), ); }, }, }), ); }, [dispatch, transaction, defaultNewGasPrice], ); const hasEnoughCancelGas = primaryTransaction.txParams && isBalanceSufficient({ amount: '0x0', gasTotal: getHexGasTotal({ gasPrice: increaseLastGasPrice(gasPrice), gasLimit: primaryTransaction.txParams.gas, }), balance: selectedAccount.balance, conversionRate, }); return [hasEnoughCancelGas, cancelTransaction]; }