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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 { ASSET_ROUTE } from '../helpers/constants/routes';
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import { ETH_SWAPS_TOKEN_OBJECT } from '../../../shared/constants/swaps';
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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 ETH_SWAPS_TOKEN_OBJECT when the user is viewing either
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* the primary, unfiltered, activity list or the ETH asset page.
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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 && knownTokens.find(({ address }) => address === tokenAddress);
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return token ?? ETH_SWAPS_TOKEN_OBJECT;
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}
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