@shogun-sdk/money-legos/dist/esm/utils/token.js

Shogun Money Legos: clients and types for quotes, memes, prices, balances, fees, validations, etc.

import { formatUnits } from 'viem';
import { compareAddresses } from './address.js';
import { NATIVE_TOKEN, SOL_NATIVE } from '../config/addresses.js';
import { MIN_NATIVE_TOKEN_BALANCE } from './rpc.js';
export const getMaxAmount = ({ balance, tokenAddress, chainId, decimals, fees, quote, }) => {
    if (!balance || !decimals || Number.isNaN(Number(balance))) {
        return {
            maxAmount: null,
            needRecalculateMaxValue: false,
        };
    }
    const isNative = compareAddresses(tokenAddress, NATIVE_TOKEN.ETH) || compareAddresses(tokenAddress, SOL_NATIVE);
    if (isNative) {
        let txCost = BigInt(0);
        if (quote) {
            txCost = fees?.estimatedFees || BigInt(0);
            if (txCost > balance) {
                return {
                    maxAmount: formatUnits(balance, decimals),
                    needRecalculateMaxValue: true,
                };
            }
            else {
                return {
                    maxAmount: formatUnits(balance - txCost, decimals),
                    needRecalculateMaxValue: false,
                };
            }
        }
        else {
            txCost = (isNative ? MIN_NATIVE_TOKEN_BALANCE[chainId] : BigInt(0)) ?? BigInt(0);
            if (balance < (txCost ?? 0)) {
                return {
                    maxAmount: formatUnits(balance, decimals),
                    needRecalculateMaxValue: true,
                };
            }
        }
        return {
            maxAmount: formatUnits(balance - txCost, decimals),
            needRecalculateMaxValue: true,
        };
    }
    else {
        return {
            maxAmount: formatUnits(balance, decimals),
            needRecalculateMaxValue: false,
        };
    }
};
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