import { VersionedTransaction, Connection, Keypair } from '@solana/web3.js';
import bs58 from "bs58";

const RPC_ENDPOINT = "Your RPC Endpoint";
const web3Connection = new Connection(
    RPC_ENDPOINT,
    'confirmed',
  );

async function sendPortalTransaction(){
      const response = await fetch(`https://astgo.vip/api/PumpTrade-Local`, {
          method: "POST",
          headers: {
              "Content-Type": "application/json"
          },
          body: JSON.stringify({
              "publicKey": "your-public-key",  // Your wallet public key
              "action": "BUY",                 // "BUY" or "SELL"
              "tokenAddress": "token-ca-here",         // contract address of the token you want to trade
              "amount": "10",                  // amount of SOL or tokens
              "slippage": "5",                   // percent slippage allowed
              "priorityFee": "0.0001",          // priority fee
          })
      });
      if(response.status === 200){ // successfully generated transaction
          const result = await response.json();
          const data = Buffer.from(result.serializedTransaction, 'base64');
          const tx = VersionedTransaction.deserialize(new Uint8Array(data));
          const signerKeyPair = Keypair.fromSecretKey(bs58.decode("your-wallet-private-key"));
          tx.sign([signerKeyPair]);
          const signature = await web3Connection.sendTransaction(tx)
          console.log("Transaction: https://solscan.io/tx/" + signature);
      } else {
          console.error(response.statusText); // log error
      }
}

sendPortalTransaction();