Track a bridge transfer

import { createPublicClient, formatUnits, http, parseEventLogs } from "viem";
import { botChainTestnet } from "@uzolabs/sdk/chains";
import { botBridgeAbi, getAddresses } from "@uzolabs/sdk/contracts";

const client = createPublicClient({ chain: botChainTestnet, transport: http() });
const { bridgeRouter } = getAddresses(botChainTestnet.id);

// The hash of your deposit transaction on BOT Chain.
const hash = process.env.TX_HASH as `0x${string}`;
if (!hash) throw new Error("Set TX_HASH to a bridge deposit transaction hash");

// 1. Find the DepositEvent the router emitted. Its depositNonce identifies the transfer.
const receipt = await client.getTransactionReceipt({ hash });
const [deposit] = parseEventLogs({ abi: botBridgeAbi, logs: receipt.logs, eventName: "DepositEvent" })
  .filter((log) => log.address.toLowerCase() === bridgeRouter.toLowerCase());
if (!deposit) throw new Error("No bridge DepositEvent in this transaction");
const { depositNonce, amount, receiveAmount, recipient, destinationChainId } = deposit.args;
console.log(`Transfer ${depositNonce}: ${formatUnits(amount, 6)} USDT to ${recipient} on chain ${destinationChainId}`);
console.log(`Recipient gets ${formatUnits(receiveAmount, 6)} USDT after a ${formatUnits(amount - receiveAmount, 6)} USDT fee`);

// 2. Check its status on the router.
const [confirmed, refund] = await Promise.all([
  client.readContract({ address: bridgeRouter, abi: botBridgeAbi, functionName: "executionConfirmed", args: [depositNonce] }),
  client.readContract({ address: bridgeRouter, abi: botBridgeAbi, functionName: "refundDatas", args: [depositNonce] }),
]);
const refunded = refund[3];
console.log(`Status: ${refunded ? "refunded" : confirmed ? "delivered" : "pending"}`);