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metamask-extension/ui/app/hooks/useCurrentAsset.js
2020-11-02 17:41:28 -06:00

28 lines
1.0 KiB
JavaScript

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