@ledgerhq/coin-ton/lib/estimateMaxSpendable.js

Ton Coin integration

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const index_1 = require("@ledgerhq/coin-framework/account/index");
const bignumber_js_1 = require("bignumber.js");
const api_1 = require("./bridge/bridgeHelpers/api");
const utils_1 = require("./utils");
const estimateMaxSpendable = async ({ account, parentAccount, transaction, }) => {
    const mainAccount = (0, index_1.getMainAccount)(account, parentAccount);
    let balance = mainAccount.spendableBalance;
    if (balance.eq(0))
        return balance;
    const accountInfo = await (0, api_1.fetchAccountInfo)(mainAccount.freshAddress);
    const isTokenType = (0, index_1.isTokenAccount)(account);
    if (transaction && !transaction.subAccountId) {
        transaction.subAccountId = isTokenType ? account.id : null;
    }
    let tokenAccountTxn = false;
    let subAccount;
    if (isTokenType) {
        tokenAccountTxn = true;
        subAccount = account;
    }
    if (transaction?.subAccountId && !subAccount) {
        tokenAccountTxn = true;
        subAccount = (0, utils_1.findSubAccountById)(mainAccount, transaction.subAccountId || "") ?? null;
    }
    if (tokenAccountTxn && subAccount) {
        return subAccount.spendableBalance;
    }
    let estimatedFees = (0, bignumber_js_1.BigNumber)(0);
    if (transaction) {
        const tonTx = (0, utils_1.buildTonTransaction)(transaction, accountInfo.seqno, mainAccount);
        estimatedFees = await (0, utils_1.getTonEstimatedFees)(mainAccount, accountInfo.status === "uninit", tonTx);
    }
    if (balance.lte(estimatedFees))
        return new bignumber_js_1.BigNumber(0);
    balance = balance.minus(estimatedFees);
    return balance;
};
exports.default = estimateMaxSpendable;
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