Link Wallets and Access Agreements

import { createWalletClient, http, type Hex } from 'viem';
import { privateKeyToAccount } from 'viem/accounts';
import { lineaSepolia } from 'viem/chains';
import { createSiweMessage } from 'viem/siwe';

const baseUrl = process.env.SHODAI_API_BASE_URL!.replace(/\/+$/, '');
const apiUrl = new URL(baseUrl);
const accessToken = process.env.SHODAI_ACCESS_TOKEN!;
const account = privateKeyToAccount(process.env.WALLET_PRIVATE_KEY as Hex);
const walletClient = createWalletClient({
  account,
  chain: lineaSepolia,
  transport: http(process.env.RPC_URL),
});
const chainId = lineaSepolia.id;
const address = account.address;
const headers = {
  Authorization: `Bearer ${accessToken}`,
  'Content-Type': 'application/json',
};

const nonceResponse = await fetch(`${baseUrl}/v0/siwe/nonce`, {
  method: 'POST',
  headers,
  body: JSON.stringify({ address }),
});
if (!nonceResponse.ok) {
  throw new Error(
    `Nonce request failed: ${nonceResponse.status} ${await nonceResponse.text()}`,
  );
}
const { data: challenge } = await nonceResponse.json();

const message = createSiweMessage({
  domain: apiUrl.host,
  address,
  statement: 'Prove control of this wallet to Shodai.',
  uri: apiUrl.origin,
  version: '1',
  chainId,
  nonce: challenge.nonce,
  issuedAt: new Date(challenge.issuedAt),
});
const signature = await walletClient.signMessage({ account, message });

const verificationResponse = await fetch(`${baseUrl}/v0/siwe/verify`, {
  method: 'POST',
  headers,
  body: JSON.stringify({
    address,
    message,
    signature,
    domain: apiUrl.host,
    chainId,
  }),
});
if (!verificationResponse.ok) {
  throw new Error(
    `Wallet verification failed: ${verificationResponse.status} ${await verificationResponse.text()}`,
  );
}
const { data: verifiedWallet } = await verificationResponse.json();
console.log(verifiedWallet);

// Use a credential with agreements.read for the same Shodai account.
const agreementsResponse = await fetch(`${baseUrl}/v0/agreements`, {
  headers: {
    Authorization: `Bearer ${process.env.SHODAI_READ_ACCESS_TOKEN!}`,
  },
});
if (!agreementsResponse.ok) {
  throw new Error(
    `Agreement list failed: ${agreementsResponse.status} ${await agreementsResponse.text()}`,
  );
}
const { data: agreements } = await agreementsResponse.json();
console.log(agreements);