@ledgerhq/coin-canton/lib-es/bridge/estimateMaxSpendable.js

Canton coin integration

import BigNumber from "bignumber.js";
import { getMainAccount } from "@ledgerhq/coin-framework/account/index";
import { getAbandonSeedAddress } from "@ledgerhq/cryptoassets/abandonseed";
import { getTransactionStatus } from "./getTransactionStatus";
import { prepareTransaction } from "./prepareTransaction";
import { createTransaction } from "./createTransaction";
export const estimateMaxSpendable = async ({ account, parentAccount, transaction, }) => {
    const mainAccount = getMainAccount(account, parentAccount);
    const newTransaction = await prepareTransaction(mainAccount, {
        ...createTransaction(account),
        ...transaction,
        // fee estimation might require a recipient to work, in that case, we use a dummy one
        recipient: transaction?.recipient || getAbandonSeedAddress("boilerplate"),
        amount: new BigNumber(0),
    });
    const status = await getTransactionStatus(mainAccount, newTransaction);
    return BigNumber.max(0, account.spendableBalance.minus(status.estimatedFees));
};
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