Untitled

const fs = require('fs');
const ethers = require('ethers');
const { Fetcher, Route, TokenAmount, Trade, TradeType } = require('@trustevm/sdk');
const { Percent } = require('@trustevm/sdk');
const { readPrivateKey } = require('./readPrivateKey');

async function swapTokensforweth(bot, msg, token1, token2, amount, slippage = "50") {
  const QUICKNODE_HTTP_ENDPOINT = "https://api-testnet.trust.one/"
  let provider = new ethers.providers.getDefaultProvider(QUICKNODE_HTTP_ENDPOINT)  

  // Router and ABI
  const UNISWAP_ROUTER_ADDRESS = "0x442F52B4364E4b037EaF9cfF46a6F747314C9c01"
  const UNISWAP_ROUTER_ABI = fs.readFileSync("swaprouter.abi").toString()
  const UNISWAP_ROUTER_CONTRACT = new ethers.Contract(UNISWAP_ROUTER_ADDRESS, UNISWAP_ROUTER_ABI, provider)
    
  try {
    const pair = await Fetcher.fetchPairData(token1, token2, provider);
    const route = await new Route([pair], token1);
    let amountIn = ethers.utils.parseEther(amount.toString());
    amountIn = amountIn.toString()

    const slippageTolerance = new Percent(slippage, "10000000");
    
    const trade = new Trade(
      route,
      new TokenAmount(token1, amountIn),
      TradeType.EXACT_INPUT
    );

    const chatId = msg.chat.id;
    const fromId = msg.from.id;
    const privateKey = readPrivateKey(`./wallets/${fromId}.json`, bot, chatId);
    const wallet = new ethers.Wallet(privateKey, provider)

    const amountOutMin = trade.minimumAmountOut(slippageTolerance).raw;
    const amountOutMinHex = ethers.BigNumber.from(amountOutMin.toString()).toHexString();
    const path = [token1.address, token2.address];
    const to = wallet.address;
    const deadline = Math.floor(Date.now() / 1000) + 60 * 20;
    const value = trade.inputAmount.raw;
    const valueHex = await ethers.BigNumber.from(value.toString()).toHexString();
    

console.log("*******************************************************")

        console.log("amountin:", amountIn, "amountout:", amountOutMinHex,"path:", path, "to", to, "deadline" , deadline )
        
console.log("*******************************************************")


const rawTxn = await UNISWAP_ROUTER_CONTRACT.populateTransaction.swapExactTokensForETH(amountIn, amountOutMinHex, path, to, deadline, )

console.log("RAW RAW RAW RAW:", rawTxn)

    let sendTxn = (await wallet).sendTransaction(rawTxn)
    
    let reciept = (await sendTxn).wait()

    if (reciept) {
      console.log(" - Transaction is mined - " + '\n' 
        + "Transaction Hash:", (await sendTxn).hash
        + '\n' + "Block Number: " 
        + (await reciept).blockNumber + '\n' 
        + "Navigate to https://rinkeby.etherscan.io/txn/" 
        + (await sendTxn).hash, "to see your transaction")
      return (await sendTxn).hash
    } else {
      console.log("Error submitting transaction")
    }

  } catch(e) {
    console.log(e)
  }
}

module.exports = {
    swapTokensforweth
}