chore: refac readme example

Author: reneecok

README.md

@@ -22,78 +22,60 @@ This JavaScript SDK is thin wrapper of MegaFuel clients, offering a streamlined
 ```js
 import 'dotenv/config';
 import {ethers} from "ethers";
-import { PaymasterClient } from 'megafuel-js-sdk';
+import {PaymasterClient, SponsorClient} from 'megafuel-js-sdk';
 
-const PAYMASTER_URL="https://bsc-megafuel-testnet.nodereal.io"
-const CHAIN_URL="https://data-seed-prebsc-2-s1.binance.org:8545/"
-const SPONSOR_URL="https://open-platform.nodereal.io/<api-key>/megafuel-testnet"
-const CHAIN_ID="97"
+const PAYMASTER_URL = "https://bsc-megafuel.nodereal.io"
+const SPONSOR_URL = "https://open-platform.nodereal.io/{YOUR_API_KEY}/megafuel"
 
-const POLICY_UUID="a2381160-xxxx-xxxx-xxxxceca86556834"
-const TOKEN_CONTRACT_ADDRESS="0xeD2.....12Ee"
-const RECIPIENT_ADDRESS="0x8e9......3EA2"
-const YOUR_PRIVATE_KEY="69......929"
+const POLICY_UUID = "a2381160-xxxx-xxxx-xxxxceca86556834"
+const TOKEN_CONTRACT_ADDRESS = "0xeD2.....12Ee"
+const RECIPIENT_ADDRESS = "0x8e9......3EA2"
+const YOUR_PRIVATE_KEY = "69......929"
 
-const client = new SponsorClient(SPONSOR_URL, null, { staticNetwork: ethers.Network.from(Number(CHAIN_ID)) });
+const paymasterClient = new PaymasterClient(PAYMASTER_URL);
+const network = await paymasterClient.getNetwork();
+const sponsorClient = new SponsorClient(SPONSOR_URL, null, {staticNetwork: ethers.Network.from(Number(network.chainId))});
 
 try {
   // sponsor the tx that interact with the stable coin ERC20 contract
-  const res1 = await client.addToWhitelist({
+  const res = await sponsorClient.addToWhitelist({
     PolicyUUID: POLICY_UUID,
     WhitelistType: WhitelistType.ToAccountWhitelist,
     Values: [RECIPIENT_ADDRESS]
   });
-  console.log("Added ERC20 contract address to whitelist ", res1);
-} catch (error){
+  console.log("Added ERC20 contract address to whitelist ", res);
+} catch (error) {
   console.error("Error:", error)
 }
 
-// Provider for assembling the transaction (e.g., mainnet)
-const assemblyProvider = new ethers.JsonRpcProvider(CHAIN_URL);
-
-// Provider for sending the transaction (e.g., could be a different network or provider)
-const paymasterProvider = new PaymasterClient(PAYMASTER_URL);
-
-const wallet = new ethers.Wallet(YOUR_PRIVATE_KEY, assemblyProvider);
-// ERC20 token ABI (only including the transfer function)
-const tokenAbi = [
-  "function transfer(address,uint256) returns (bool)"
-];
-
-// Create contract instance
-const tokenContract = new ethers.Contract(TOKEN_CONTRACT_ADDRESS, tokenAbi, wallet);
-
-// Transaction details
+const wallet = new ethers.Wallet(YOUR_PRIVATE_KEY);
+const tokenAbi = ["function transfer(address,uint256) returns (bool)"]; // ERC20 token ABI (only including the transfer function)
+const tokenContract = new ethers.Contract(TOKEN_CONTRACT_ADDRESS, tokenAbi, wallet); // Create contract instance
+// Get the current nonce for the sender's address
+const nonce = await paymasterClient.getTransactionCount(wallet.address, 'pending');
 const tokenAmount = ethers.parseUnits('1.0', 18); // Amount of tokens to send (adjust decimals as needed)
+const transaction = await tokenContract.transfer.populateTransaction(RECIPIENT_ADDRESS, tokenAmount);
+
+// Add nonce and gas settings
+transaction.from = wallet.address;
+transaction.nonce = nonce;
+transaction.gasLimit = 100000; // Adjust gas limit as needed for token transfers
+transaction.chainId = network.chainId;
+transaction.gasPrice = 0; // Set gas price to 0
 
 try {
-  // Get the current nonce for the sender's address
-  const nonce = await assemblyProvider.getTransactionCount(wallet.address);
-
-  // Create the transaction object
-  const transaction = await tokenContract.transfer.populateTransaction(RECIPIENT_ADDRESS, tokenAmount);
-
-  // Add nonce and gas settings
-  transaction.from = wallet.address;
-  transaction.nonce = nonce;
-  transaction.gasLimit = 100000; // Adjust gas limit as needed for token transfers
-  transaction.chainId = 97;
-  transaction.gasPrice = 0; // Set gas price to 0
-
-  try {
-    const sponsorableInfo = await paymasterProvider.isSponsorable(transaction);
-    console.log('Sponsorable Information:', sponsorableInfo);
-  } catch (error) {
-    console.error('Error checking sponsorable status:', error);
-  }
+  const sponsorableInfo = await paymasterClient.isSponsorable(transaction);
+  console.log('Sponsorable Information:', sponsorableInfo);
+} catch (error) {
+  console.error('Error checking sponsorable status:', error);
+}
 
+try {
   // Sign the transaction
   const signedTx = await wallet.signTransaction(transaction);
-
   // Send the raw transaction using the sending provider
-  const tx = await paymasterProvider.sendRawTransaction(signedTx);
+  const tx = await paymasterClient.sendRawTransaction(signedTx);
   console.log('Transaction sent:', tx);
-
 } catch (error) {
   console.error('Error sending transaction:', error);
 }