A Metamask fork with Infura removed and default networks editable
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ciphermask/ui/app/hooks/useSwappedTokenValue.js

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import { TRANSACTION_TYPES } from '../../../shared/constants/transaction';
import { ETH_SWAPS_TOKEN_OBJECT } from '../../../shared/constants/swaps';
import { getSwapsTokensReceivedFromTxMeta } from '../pages/swaps/swaps.util';
import { useTokenFiatAmount } from './useTokenFiatAmount';
/**
* @typedef {Object} SwappedTokenValue
* @property {string} swapTokenValue - a primary currency string formatted for display
* @property {string} swapTokenFiatAmount - a secondary currency string formatted for display
* @property {boolean} isViewingReceivedTokenFromSwap - true if user is on the asset page for the
* destination/received asset in a swap.
*/
/**
* A Swap transaction group's primaryTransaction contains details of the swap,
* including the source (from) and destination (to) token type (ETH, DAI, etc..)
* When viewing a non ETH asset page, we need to determine if that asset is the
* token that was received (destination) from the swap. In that circumstance we
* would want to show the primaryCurrency in the activity list that is most relevant
* for that token (- 1000 DAI, for example, when swapping DAI for ETH).
* @param {import('../selectors').transactionGroup} transactionGroup - Group of transactions by nonce
* @param {import('./useTokenDisplayValue').Token} currentAsset - The current asset the user is looking at
* @returns {SwappedTokenValue}
*/
export function useSwappedTokenValue(transactionGroup, currentAsset) {
const { symbol, decimals, address } = currentAsset;
const { primaryTransaction, initialTransaction } = transactionGroup;
const { type } = initialTransaction;
const { from: senderAddress } = initialTransaction.txParams || {};
const isViewingReceivedTokenFromSwap =
currentAsset?.symbol === primaryTransaction.destinationTokenSymbol ||
(currentAsset.address === ETH_SWAPS_TOKEN_OBJECT.address &&
primaryTransaction.destinationTokenSymbol === 'ETH');
const swapTokenValue =
type === TRANSACTION_TYPES.SWAP && isViewingReceivedTokenFromSwap
? getSwapsTokensReceivedFromTxMeta(
primaryTransaction.destinationTokenSymbol,
initialTransaction,
address,
senderAddress,
decimals,
)
: type === TRANSACTION_TYPES.SWAP && primaryTransaction.swapTokenValue;
const isNegative =
typeof swapTokenValue === 'string'
? Math.sign(swapTokenValue) === -1
: false;
const _swapTokenFiatAmount = useTokenFiatAmount(
address,
swapTokenValue || '',
symbol,
);
const swapTokenFiatAmount =
swapTokenValue && isViewingReceivedTokenFromSwap && _swapTokenFiatAmount;
return {
swapTokenValue,
swapTokenFiatAmount,
isViewingReceivedTokenFromSwap,
isNegative,
};
}