lkt/spacefiswap.mjs

import Web3, { eth } from "web3";
import { BigNumber } from "bignumber.js";
import { Wallet, Provider } from "zksync-web3";
import { ethers } from "ethers";
import spacefiRouterAbi from "./spacefiRouterAbi.json" assert { type: "json" };
import mutePairAbi from "./mutePairAbi.json" assert { type: "json" };

const rpc = "https://zksync2-testnet.zksync.dev/";
const privateKey = "0xd768b0b3f8dedcb465ad680268453391f7da6ec4e1942a13fdfcdea8773aab3e";
const spaceFiRouterAddress = "0x6eeF3310E09DF3aa819Cc2aa364D4f3Ad2E6fFe3";
const usdcAddress = "0x0faF6df7054946141266420b43783387A78d82A9";

const provider = new Provider(rpc);
const wallet = new Wallet(privateKey).connect(provider);
const web3 = new Web3(new Web3.providers.HttpProvider(rpc));

const value = ethers.utils.parseEther("0.001");
const spacefiRouter = new web3.eth.Contract(spacefiRouterAbi, spaceFiRouterAddress);
const wethAddress = await spacefiRouter.methods.WETH().call();
console.log(`wethAddress: ${wethAddress}`);
const swap = spacefiRouter.methods.swapExactETHForTokens(
    "0",
    [wethAddress, usdcAddress],
    wallet.address,
    Math.floor(new Date().getTime() / 1000 + 60 * 30) + "",
    [false]
);
const gasLimit = await swap.estimateGas({
    from: wallet.address,
    value: value.toHexString(),
});
console.log(`gasLimit: ${gasLimit}`);
const tx = await wallet.sendTransaction({
    to: spaceFiRouterAddress,
    data: swap.encodeABI(),
    value: value.toHexString(),
    gasLimit,
});
console.log(tx);