@ledgerhq/coin-multiversx/lib-es/estimateMaxSpendable.js

Ledger MultiversX Coin integration

import { BigNumber } from "bignumber.js";
import { findSubAccountById, getMainAccount } from "@ledgerhq/coin-framework/account";
import { getFees } from "./api";
import { createTransaction } from "./createTransaction";
/**
 * Returns the maximum possible amount for transaction
 *
 * @param {Object} param - the account, parentAccount and transaction
 */
export const estimateMaxSpendable = async ({ account, parentAccount, transaction, }) => {
    const mainAccount = getMainAccount(account, parentAccount);
    const tx = {
        ...createTransaction(account),
        subAccountId: account.type === "Account" ? null : account.id,
        ...transaction,
        useAllAmount: true,
    };
    const tokenAccount = tx.subAccountId
        ? findSubAccountById(mainAccount, tx.subAccountId)
        : undefined;
    if (tokenAccount) {
        return tokenAccount.balance;
    }
    const fees = await getFees(tx);
    if (fees.gt(mainAccount.spendableBalance)) {
        return new BigNumber(0);
    }
    return mainAccount.spendableBalance.minus(fees);
};
export default estimateMaxSpendable;
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