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47 lines
1.8 KiB
47 lines
1.8 KiB
import { useMemo } from 'react';
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import { useSelector } from 'react-redux';
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import { getCurrentCurrency, getShouldShowFiat } from '../selectors';
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import { decEthToConvertedCurrency } from '../helpers/utils/conversions.util';
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import { formatCurrency } from '../helpers/utils/confirm-tx.util';
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import { getConversionRate } from '../ducks/metamask/metamask';
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/**
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* Get an Eth amount converted to fiat and formatted for display
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*
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* @param {string} [ethAmount] - The eth amount to convert
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* @param {object} [overrides] - A configuration object that allows the called to explicitly
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* ensure fiat is shown even if the property is not set in state.
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* @param {boolean} [overrides.showFiat] - If truthy, ensures the fiat value is shown even if the showFiat value from state is falsey
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* @param {boolean} hideCurrencySymbol - Indicates whether the returned formatted amount should include the trailing currency symbol
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* @returns {string} The formatted token amount in the user's chosen fiat currency
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*/
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export function useEthFiatAmount(
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ethAmount,
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overrides = {},
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hideCurrencySymbol,
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) {
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const conversionRate = useSelector(getConversionRate);
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const currentCurrency = useSelector(getCurrentCurrency);
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const userPrefersShownFiat = useSelector(getShouldShowFiat);
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const showFiat = overrides.showFiat ?? userPrefersShownFiat;
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const formattedFiat = useMemo(
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() => decEthToConvertedCurrency(ethAmount, currentCurrency, conversionRate),
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[conversionRate, currentCurrency, ethAmount],
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);
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if (
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!showFiat ||
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currentCurrency.toUpperCase() === 'ETH' ||
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conversionRate <= 0 ||
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ethAmount === undefined
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) {
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return undefined;
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}
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return hideCurrencySymbol
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? formatCurrency(formattedFiat, currentCurrency)
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: `${formatCurrency(
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formattedFiat,
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currentCurrency,
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)} ${currentCurrency.toUpperCase()}`;
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}
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