Authentication

const getSigninMessage = async (address) => {
  const response = await fetch(
    `${BASE_URL}/auth/v1/get-account-signin-message?address=${address}&chainId=1`,
    {
      method: "GET",
      headers: {
        "Content-Type": "application/json",
        "API-KEY": "your-api-key",
      },
    }
  );

  const data = await response.json();
  return data.signature; // This is the message to sign
};

const authenticateWithSignature = async (signature, address) => {
  const response = await fetch(`${BASE_URL}/auth/v2/authenticate`, {
    method: "POST",
    headers: {
      "Content-Type": "application/json",
      "API-KEY": "your-api-key",
    },
    body: JSON.stringify({
      signature,
      address,
      chainId: 1,
      type: "SIGNATURE", // Specify signature authentication
    }),
  });

  const data = await response.json();
  return data.accessToken;
};

const authenticateWithFID = async (signature, address, signerId) => {
  const response = await fetch(`${BASE_URL}/auth/v2/authenticate`, {
    method: "POST",
    headers: {
      "Content-Type": "application/json",
      "API-KEY": "your-api-key",
    },
    body: JSON.stringify({
      signature,
      address,
      chainId: 1,
      id: signerId, // Your signer ID registered on Farcaster
      type: "FID", // Specify FID authentication
    }),
  });

  const data = await response.json();
  return data.accessToken;
};

// Here's a complete example using ethers.js:
const authenticateUser = async (wallet, type = "signature") => {
  try {
    // Step 1: Get the address
    const address = await wallet.getAddress();

    // Step 2: Get message to sign
    const message = await getSigninMessage(address);

    // Step 3: Sign the message
    const signature = await wallet.signMessage(message);

    // Step 4: Authenticate
    if (type === "FID") {
      return await authenticateWithFID(signature, address, YOUR_SIGNER_ID);
    } else {
      return await authenticateWithSignature(signature, address);
    }
  } catch (error) {
    console.error("Authentication failed:", error);
    throw error;
  }
};

const makeAuthenticatedRequest = async (accessToken) => {
  const response = await fetch(`${BASE_URL}/your/protected/endpoint`, {
    method: "POST",
    headers: {
      "Content-Type": "application/json",
      "API-KEY": "your-api-key",
      Authorization: `Bearer ${accessToken}`,
    },
    body: JSON.stringify({
      // Your request data
    }),
  });

  return await response.json();
};