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41 lines
1.4 KiB
41 lines
1.4 KiB
import { useSelector } from 'react-redux';
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import { useRouteMatch } from 'react-router-dom';
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import { getTokens } from '../ducks/metamask/metamask';
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import { getCurrentChainId } from '../selectors';
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import { ASSET_ROUTE } from '../helpers/constants/routes';
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import {
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SWAPS_CHAINID_DEFAULT_TOKEN_MAP,
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ETH_SWAPS_TOKEN_OBJECT,
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} from '../../shared/constants/swaps';
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import { isEqualCaseInsensitive } from '../../shared/modules/string-utils';
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/**
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* Returns a token object for the asset that is currently being viewed.
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* Will return the default token object for the current chain when the
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* user is viewing either the primary, unfiltered, activity list or the
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* default token asset page.
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*
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* @returns {import('./useTokenDisplayValue').Token}
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*/
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export function useCurrentAsset() {
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// To determine which primary currency to display for swaps transactions we need to be aware
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// of which asset, if any, we are viewing at present
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const match = useRouteMatch({
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path: `${ASSET_ROUTE}/:asset`,
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exact: true,
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strict: true,
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});
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const tokenAddress = match?.params?.asset;
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const knownTokens = useSelector(getTokens);
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const token =
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tokenAddress &&
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knownTokens.find(({ address }) =>
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isEqualCaseInsensitive(address, tokenAddress),
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);
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const chainId = useSelector(getCurrentChainId);
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return (
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token ??
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(SWAPS_CHAINID_DEFAULT_TOKEN_MAP[chainId] || ETH_SWAPS_TOKEN_OBJECT)
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);
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}
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