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import { BigNumber } from '@0x/utils';
import { Web3Wrapper } from '@0x/web3-wrapper';
import * as _ from 'lodash';
import { BIG_NUMBER_ZERO, ETH_DECIMALS } from '../constants';
export const format = {
ethBaseUnitAmount: (
ethBaseUnitAmount?: BigNumber,
decimalPlaces: number = 4,
defaultText: React.ReactNode = '0 ETH',
): React.ReactNode => {
if (_.isUndefined(ethBaseUnitAmount)) {
return defaultText;
}
const ethUnitAmount = Web3Wrapper.toUnitAmount(ethBaseUnitAmount, ETH_DECIMALS);
return format.ethUnitAmount(ethUnitAmount, decimalPlaces);
},
ethUnitAmount: (
ethUnitAmount?: BigNumber,
decimalPlaces: number = 4,
defaultText: React.ReactNode = '0 ETH',
minUnitAmountToDisplay: BigNumber = new BigNumber('0.00001'),
): React.ReactNode => {
if (_.isUndefined(ethUnitAmount)) {
return defaultText;
}
let roundedAmount = ethUnitAmount.round(decimalPlaces).toDigits(decimalPlaces);
if (roundedAmount.eq(BIG_NUMBER_ZERO) && ethUnitAmount.greaterThan(BIG_NUMBER_ZERO)) {
// Sometimes for small ETH amounts (i.e. 0.000045) the amount rounded to 4 decimalPlaces is 0
// If that is the case, show to 1 significant digit
roundedAmount = new BigNumber(ethUnitAmount.toPrecision(1));
}
const displayAmount =
roundedAmount.greaterThan(BIG_NUMBER_ZERO) && roundedAmount.lessThan(minUnitAmountToDisplay)
? `< ${minUnitAmountToDisplay.toString()}`
: roundedAmount.toString();
return `${displayAmount} ETH`;
},
ethBaseUnitAmountInUsd: (
ethBaseUnitAmount?: BigNumber,
ethUsdPrice?: BigNumber,
decimalPlaces: number = 2,
defaultText: React.ReactNode = '$0.00',
minUnitAmountToDisplay: BigNumber = new BigNumber('0.00001'),
): React.ReactNode => {
if (_.isUndefined(ethBaseUnitAmount) || _.isUndefined(ethUsdPrice)) {
return defaultText;
}
const ethUnitAmount = Web3Wrapper.toUnitAmount(ethBaseUnitAmount, ETH_DECIMALS);
return format.ethUnitAmountInUsd(ethUnitAmount, ethUsdPrice, decimalPlaces, minUnitAmountToDisplay);
},
ethUnitAmountInUsd: (
ethUnitAmount?: BigNumber,
ethUsdPrice?: BigNumber,
decimalPlaces: number = 2,
defaultText: React.ReactNode = '$0.00',
): React.ReactNode => {
if (_.isUndefined(ethUnitAmount) || _.isUndefined(ethUsdPrice)) {
return defaultText;
}
const rawUsdPrice = ethUnitAmount.mul(ethUsdPrice);
const roundedUsdPrice = rawUsdPrice.toFixed(decimalPlaces);
if (roundedUsdPrice === '0.00' && rawUsdPrice.gt(BIG_NUMBER_ZERO)) {
return '<$0.01';
} else {
return `$${roundedUsdPrice}`;
}
},
ethAddress: (address: string): string => {
return `0x${address.slice(2, 7)}…${address.slice(-5)}`;
},
};
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