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534 lines
18 KiB
534 lines
18 KiB
/* @flow */
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import BigNumber from 'bignumber.js';
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import EthereumjsUtil from 'ethereumjs-util';
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import EthereumjsUnits from 'ethereumjs-units';
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import { findDevice, getPendingAmount, findToken } from 'reducers/utils';
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import { toFiatCurrency } from 'utils/fiatConverter';
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import * as SEND from 'actions/constants/send';
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import * as ethUtils from 'utils/ethUtils';
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import * as validators from 'utils/validators';
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import type { Dispatch, GetState, PayloadAction } from 'flowtype';
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import type { State, FeeLevel } from 'reducers/SendFormEthereumReducer';
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import l10nMessages from 'views/Wallet/views/Account/Send/validation.messages';
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import l10nCommonMessages from 'views/common.messages';
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/*
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* Called from SendFormActions.observe
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* Reaction for WEB3.GAS_PRICE_UPDATED action
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*/
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export const onGasPriceUpdated = (network: string, gasPrice: string): PayloadAction<void> => (
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dispatch: Dispatch,
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getState: GetState
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): void => {
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// testing random data
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// function getRandomInt(min, max) {
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// return Math.floor(Math.random() * (max - min + 1)) + min;
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// }
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// const newPrice = getRandomInt(10, 50).toString();
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const state = getState().sendFormEthereum;
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if (network === state.networkSymbol) return;
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// check if new price is different then currently recommended
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const newPrice: string = EthereumjsUnits.convert(gasPrice, 'wei', 'gwei');
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if (newPrice !== state.recommendedGasPrice) {
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if (!state.untouched) {
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// if there is a transaction draft let the user know
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// and let him update manually
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dispatch({
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type: SEND.CHANGE,
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networkType: 'ethereum',
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state: {
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...state,
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gasPriceNeedsUpdate: true,
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recommendedGasPrice: newPrice,
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},
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});
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} else {
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// automatically update feeLevels and gasPrice
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const feeLevels = getFeeLevels(state.networkSymbol, newPrice, state.gasLimit);
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const selectedFeeLevel = getSelectedFeeLevel(feeLevels, state.selectedFeeLevel);
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dispatch({
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type: SEND.CHANGE,
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networkType: 'ethereum',
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state: {
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...state,
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gasPriceNeedsUpdate: false,
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recommendedGasPrice: newPrice,
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gasPrice: selectedFeeLevel.gasPrice,
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feeLevels,
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selectedFeeLevel,
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},
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});
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}
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}
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};
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/*
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* Recalculate amount, total and fees
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*/
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export const validation = (): PayloadAction<State> => (
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dispatch: Dispatch,
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getState: GetState
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): State => {
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// clone deep nested object
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// to avoid overrides across state history
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let state: State = JSON.parse(JSON.stringify(getState().sendFormEthereum));
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// reset errors
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state.errors = {};
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state.warnings = {};
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state.infos = {};
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state = dispatch(recalculateTotalAmount(state));
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state = dispatch(updateCustomFeeLabel(state));
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state = dispatch(domainResolution(state));
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state = dispatch(addressValidation(state));
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state = dispatch(addressLabel(state));
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state = dispatch(amountValidation(state));
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state = dispatch(gasLimitValidation(state));
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state = dispatch(gasPriceValidation(state));
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state = dispatch(nonceValidation(state));
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state = dispatch(dataValidation(state));
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return state;
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};
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export const recalculateTotalAmount = ($state: State): PayloadAction<State> => (
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dispatch: Dispatch,
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getState: GetState
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): State => {
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const { account, tokens, pending } = getState().selectedAccount;
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if (!account) return $state;
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const state = { ...$state };
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const isToken = state.currency !== state.networkSymbol;
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if (state.setMax) {
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const pendingAmount = getPendingAmount(pending, state.currency, isToken);
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if (isToken) {
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const token = findToken(
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tokens,
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account.descriptor,
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state.currency,
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account.deviceState
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);
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if (token) {
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state.amount = new BigNumber(token.balance).minus(pendingAmount).toFixed();
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}
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} else {
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const b = new BigNumber(account.balance).minus(pendingAmount);
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state.amount = calculateMaxAmount(b, state.gasPrice, state.gasLimit);
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}
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// calculate amount in local currency
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const { localCurrency } = getState().sendFormEthereum;
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const fiatRates = getState().fiat.find(f => f.network === state.currency.toLowerCase());
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const localAmount = toFiatCurrency(state.amount, localCurrency, fiatRates);
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state.localAmount = localAmount;
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}
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state.total = calculateTotal(isToken ? '0' : state.amount, state.gasPrice, state.gasLimit);
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return state;
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};
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export const updateCustomFeeLabel = ($state: State): PayloadAction<State> => (): State => {
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const state = { ...$state };
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if ($state.selectedFeeLevel.value === 'Custom') {
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state.selectedFeeLevel = {
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...state.selectedFeeLevel,
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gasPrice: state.gasPrice,
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label: `${calculateFee(state.gasPrice, state.gasLimit)} ${state.networkSymbol}`,
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};
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}
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return state;
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};
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/*
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* Address value validation
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*/
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export const addressValidation = ($state: State): PayloadAction<State> => (): State => {
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const state = { ...$state };
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if (!state.touched.address) return state;
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const { address } = state;
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if (address.length < 1) {
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state.errors.address = l10nMessages.TR_ADDRESS_IS_NOT_SET;
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} else if (!EthereumjsUtil.isValidAddress(address)) {
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state.errors.address = l10nMessages.TR_ADDRESS_IS_NOT_VALID;
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} else if (
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validators.hasUppercase(address) &&
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!EthereumjsUtil.isValidChecksumAddress(address)
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) {
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state.errors.address = l10nMessages.TR_ADDRESS_CHECKSUM_IS_NOT_VALID;
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}
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return state;
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};
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/*
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* Domain resolving
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*/
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export const domainResolution = ($state: State): PayloadAction<State> => (): State => {
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const state = { ...$state };
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if (state.domainResolving) {
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state.warnings.address = {
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...l10nCommonMessages.TR_DOMAIN_RESOLVING,
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values: {
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domain: state.address,
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},
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};
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}
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if (state.resolvedDomain) {
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state.infos.address = {
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...l10nCommonMessages.TR_DOMAIN_COMPLETE,
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values: {
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domain: state.resolvedDomain,
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address: state.address,
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},
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};
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}
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return state;
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};
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/*
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* Address label assignation
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*/
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export const addressLabel = ($state: State): PayloadAction<State> => (
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dispatch: Dispatch,
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getState: GetState
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): State => {
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const state = { ...$state };
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if (!state.touched.address || state.errors.address) return state;
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const { account, network } = getState().selectedAccount;
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if (!account || !network) return state;
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const { address } = state;
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const savedAccounts = getState().accounts.filter(
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a => a.descriptor.toLowerCase() === address.toLowerCase()
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);
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if (savedAccounts.length > 0) {
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// check if found account belongs to this network
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const currentNetworkAccount = savedAccounts.find(a => a.network === network.shortcut);
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if (currentNetworkAccount) {
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const device = findDevice(
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getState().devices,
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currentNetworkAccount.deviceID,
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currentNetworkAccount.deviceState
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);
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if (device) {
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state.infos.address = {
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...l10nCommonMessages.TR_DEVICE_LABEL_ACCOUNT_HASH,
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values: {
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deviceLabel: device.instanceLabel,
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number: currentNetworkAccount.index + 1,
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},
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};
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}
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} else {
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// corner-case: the same derivation path is used on different networks
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const otherNetworkAccount = savedAccounts[0];
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const device = findDevice(
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getState().devices,
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otherNetworkAccount.deviceID,
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otherNetworkAccount.deviceState
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);
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const { networks } = getState().localStorage.config;
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const otherNetwork = networks.find(c => c.shortcut === otherNetworkAccount.network);
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if (device && otherNetwork) {
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state.warnings.address = {
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...l10nCommonMessages.TR_LOOKS_LIKE_IT_IS_DEVICE_LABEL,
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values: {
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deviceLabel: device.instanceLabel,
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number: otherNetworkAccount.index + 1,
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network: otherNetwork.name,
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},
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};
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}
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}
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}
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return state;
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};
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/*
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* Amount value validation
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*/
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export const amountValidation = ($state: State): PayloadAction<State> => (
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dispatch: Dispatch,
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getState: GetState
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): State => {
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const state = { ...$state };
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if (!state.touched.amount) return state;
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const { account, tokens, pending } = getState().selectedAccount;
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if (!account) return state;
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const { amount } = state;
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if (amount.length < 1) {
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state.errors.amount = l10nMessages.TR_AMOUNT_IS_NOT_SET;
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} else if (amount.length > 0 && !validators.isNumber(amount)) {
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state.errors.amount = l10nMessages.TR_AMOUNT_IS_NOT_A_NUMBER;
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} else {
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const isToken: boolean = state.currency !== state.networkSymbol;
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const pendingAmount: BigNumber = getPendingAmount(pending, state.currency, isToken);
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if (isToken) {
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const token = findToken(
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tokens,
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account.descriptor,
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state.currency,
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account.deviceState
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);
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if (!token) return state;
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if (!validators.hasDecimals(state.amount, parseInt(token.decimals, 0))) {
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state.errors.amount = {
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...l10nMessages.TR_MAXIMUM_DECIMALS_ALLOWED,
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values: { decimals: token.decimals },
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};
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} else if (new BigNumber(state.total).isGreaterThan(account.balance)) {
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state.errors.amount = {
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...l10nMessages.TR_NOT_ENOUGH_FUNDS_TO_COVER_TRANSACTION,
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values: {
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networkSymbol: state.networkSymbol,
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},
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};
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} else if (
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new BigNumber(state.amount).isGreaterThan(
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new BigNumber(token.balance).minus(pendingAmount)
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)
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) {
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state.errors.amount = l10nMessages.TR_NOT_ENOUGH_FUNDS;
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} else if (new BigNumber(state.amount).isLessThanOrEqualTo('0')) {
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// TODO: this is never gonna happen! It will fail in second if condiftion (isNumber validation)
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state.errors.amount = l10nMessages.TR_AMOUNT_IS_TOO_LOW;
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}
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} else if (!validators.hasDecimals(state.amount, 18)) {
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state.errors.amount = {
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...l10nMessages.TR_MAXIMUM_DECIMALS_ALLOWED,
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values: {
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decimals: 18,
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},
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};
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} else if (
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new BigNumber(state.total).isGreaterThan(
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new BigNumber(account.balance).minus(pendingAmount)
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)
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) {
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state.errors.amount = l10nMessages.TR_NOT_ENOUGH_FUNDS;
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}
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}
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return state;
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};
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/*
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* Gas limit value validation
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*/
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export const gasLimitValidation = ($state: State): PayloadAction<State> => (
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dispatch: Dispatch,
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getState: GetState
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): State => {
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const state = { ...$state };
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if (!state.touched.gasLimit) return state;
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const { network } = getState().selectedAccount;
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if (!network) return state;
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const { gasLimit } = state;
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if (gasLimit.length < 1) {
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state.errors.gasLimit = l10nMessages.TR_GAS_LIMIT_IS_NOT_SET;
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} else if (gasLimit.length > 0 && !validators.isNumber(gasLimit)) {
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state.errors.gasLimit = l10nMessages.TR_GAS_LIMIT_IS_NOT_A_NUMBER;
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} else {
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const gl: BigNumber = new BigNumber(gasLimit);
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if (gl.isLessThan(1)) {
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state.errors.gasLimit = l10nMessages.TR_GAS_LIMIT_IS_TOO_LOW;
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} else if (
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gl.isLessThan(
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state.currency !== state.networkSymbol
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? network.defaultGasLimitTokens
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: network.defaultGasLimit
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)
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) {
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state.warnings.gasLimit = l10nMessages.TR_GAS_LIMIT_IS_BELOW_RECOMMENDED;
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}
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}
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return state;
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};
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/*
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* Gas price value validation
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*/
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export const gasPriceValidation = ($state: State): PayloadAction<State> => (): State => {
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const state = { ...$state };
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if (!state.touched.gasPrice) return state;
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const { gasPrice } = state;
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if (gasPrice.length < 1) {
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state.errors.gasPrice = l10nMessages.TR_GAS_PRICE_IS_NOT_SET;
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} else if (gasPrice.length > 0 && !validators.isNumber(gasPrice)) {
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state.errors.gasPrice = l10nMessages.TR_GAS_PRICE_IS_NOT_A_NUMBER;
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} else {
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const gp: BigNumber = new BigNumber(gasPrice);
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if (gp.isGreaterThan(1000)) {
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state.warnings.gasPrice = l10nMessages.TR_GAS_PRICE_IS_TOO_HIGH;
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} else if (gp.isLessThanOrEqualTo('0')) {
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state.errors.gasPrice = l10nMessages.TR_GAS_PRICE_IS_TOO_LOW;
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}
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}
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return state;
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};
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/*
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* Nonce value validation
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*/
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export const nonceValidation = ($state: State): PayloadAction<State> => (
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dispatch: Dispatch,
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getState: GetState
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): State => {
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const state = { ...$state };
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if (!state.touched.nonce) return state;
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const { account } = getState().selectedAccount;
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if (!account || account.networkType !== 'ethereum') return state;
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const { nonce } = state;
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if (nonce.length < 1) {
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state.errors.nonce = l10nMessages.TR_NONCE_IS_NOT_SET;
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} else if (!validators.isAbs(nonce)) {
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state.errors.nonce = l10nMessages.TR_NONCE_IS_NOT_A_NUMBER;
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} else {
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const n: BigNumber = new BigNumber(nonce);
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if (n.isLessThan(account.nonce)) {
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state.warnings.nonce = l10nMessages.TR_NONCE_IS_LOWER_THAN_RECOMMENDED;
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} else if (n.isGreaterThan(account.nonce)) {
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state.warnings.nonce = l10nMessages.TR_NONCE_IS_GREATER_THAN_RECOMMENDED;
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}
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}
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return state;
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};
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/*
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* Data validation
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*/
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export const dataValidation = ($state: State): PayloadAction<State> => (): State => {
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const state = { ...$state };
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if (!state.touched.data || state.data.length === 0) return state;
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if (!ethUtils.isHex(state.data)) {
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state.errors.data = l10nMessages.TR_DATA_IS_NOT_VALID_HEX;
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}
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return state;
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};
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/*
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* UTILITIES
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*/
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export const calculateFee = (gasPrice: string, gasLimit: string): string => {
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try {
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return EthereumjsUnits.convert(
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new BigNumber(gasPrice).times(gasLimit).toFixed(),
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'gwei',
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'ether'
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);
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} catch (error) {
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// TODO: empty input throws this error.
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return '0';
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}
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};
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export const calculateTotal = (amount: string, gasPrice: string, gasLimit: string): string => {
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try {
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const bAmount = new BigNumber(amount);
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// BigNumber() returns NaN on non-numeric string
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if (bAmount.isNaN()) {
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throw new Error('Amount is not a number');
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}
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return bAmount.plus(calculateFee(gasPrice, gasLimit)).toFixed();
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} catch (error) {
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// TODO: empty input throws this error.
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return '0';
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}
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};
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export const calculateMaxAmount = (
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balance: BigNumber,
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gasPrice: string,
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gasLimit: string
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): string => {
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try {
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// TODO - minus pendings
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const fee = calculateFee(gasPrice, gasLimit);
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const max = balance.minus(fee);
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if (max.isLessThan(0)) return '0';
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return max.toFixed();
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} catch (error) {
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console.error(error);
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return '0';
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}
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};
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export const getFeeLevels = (
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symbol: string,
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gasPrice: BigNumber | string,
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gasLimit: string,
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selected?: FeeLevel
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): Array<FeeLevel> => {
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const price: BigNumber = typeof gasPrice === 'string' ? new BigNumber(gasPrice) : gasPrice;
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const quarter: BigNumber = price.dividedBy(4);
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const high: string = price.plus(quarter.times(2)).toFixed();
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const low: string = price.minus(quarter.times(2)).toFixed();
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const customLevel: FeeLevel =
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selected && selected.value === 'Custom'
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? {
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value: 'Custom',
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localizedValue: l10nCommonMessages.TR_CUSTOM_FEE,
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gasPrice: selected.gasPrice,
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label: `${calculateFee(selected.gasPrice, gasLimit)} ${symbol}`,
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}
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: {
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value: 'Custom',
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localizedValue: l10nCommonMessages.TR_CUSTOM_FEE,
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gasPrice: low,
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label: '',
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};
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return [
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{
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value: 'High',
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localizedValue: l10nCommonMessages.TR_HIGH_FEE,
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gasPrice: high,
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label: `${calculateFee(high, gasLimit)} ${symbol}`,
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},
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{
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value: 'Normal',
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localizedValue: l10nCommonMessages.TR_NORMAL_FEE,
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gasPrice: gasPrice.toString(),
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label: `${calculateFee(price.toFixed(), gasLimit)} ${symbol}`,
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},
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{
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value: 'Low',
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localizedValue: l10nCommonMessages.TR_LOW_FEE,
|
|
gasPrice: low,
|
|
label: `${calculateFee(low, gasLimit)} ${symbol}`,
|
|
},
|
|
customLevel,
|
|
];
|
|
};
|
|
|
|
export const getSelectedFeeLevel = (feeLevels: Array<FeeLevel>, selected: FeeLevel): FeeLevel => {
|
|
const { value } = selected;
|
|
let selectedFeeLevel: ?FeeLevel;
|
|
selectedFeeLevel = feeLevels.find(f => f.value === value);
|
|
if (!selectedFeeLevel) {
|
|
// fallback to default
|
|
selectedFeeLevel = feeLevels.find(f => f.value === 'Normal');
|
|
}
|
|
return selectedFeeLevel || selected;
|
|
};
|