import { CdpX402Client } from "@coinbase/cdp-sdk/x402";
import { wrapFetchWithPayment } from "@x402/fetch";

// Production mode uses Base Mainnet. The CDP wallet must hold native Circle USDC on Base.
const client = new CdpX402Client();
const { evmAddress } = await client.getAddresses();
console.log(`Paying from ${evmAddress}`);

const fetchWithPayment = wrapFetchWithPayment(globalThis.fetch, client);
const response = await fetchWithPayment("https://api.tradingzones.app/v1/signals/TZ-SELECT/4h");

if (!response.ok) {
  throw new Error(`Trading Zones purchase failed: HTTP ${response.status}`);
}

const setup = await response.json();
if (!setup.schema_version || !setup.package_id || !setup.valid_until) {
  throw new Error("Invalid Trading Zones response contract");
}
console.log(JSON.stringify(setup, null, 2));