async function encryptData(publicKey, plaintext) {
  const publicKeyBytes = Uint8Array.from(atob(publicKey), c => c.charCodeAt(0));
  const publicKeyObj = await crypto.subtle.importKey(
    "spki", publicKeyBytes,
    { name: "RSA-OAEP", hash: "SHA-256" }, true, ["encrypt"]
  );

  const aesKey = await crypto.subtle.generateKey(
    { name: "AES-GCM", length: 256 }, true, ["encrypt"]
  );
  const nonce = crypto.getRandomValues(new Uint8Array(12));
  const data = new TextEncoder().encode(plaintext);

  const ciphertext = new Uint8Array(
    await crypto.subtle.encrypt({ name: "AES-GCM", iv: nonce }, aesKey, data)
  );

  const aesKeyBytes = new Uint8Array(await crypto.subtle.exportKey("raw", aesKey));
  const encryptedAesKey = new Uint8Array(
    await crypto.subtle.encrypt(
      { name: "RSA-OAEP", hash: "SHA-256" }, publicKeyObj, aesKeyBytes
    )
  );

  const combined = new Uint8Array(encryptedAesKey.length + nonce.length + ciphertext.length);
  combined.set(encryptedAesKey, 0);
  combined.set(nonce, encryptedAesKey.length);
  combined.set(ciphertext, encryptedAesKey.length + nonce.length);
  return btoa(String.fromCharCode(...combined));
}

async function sendPrintRequest(target, printData, publicKey) {
  const plaintext = JSON.stringify(printData);
  const data = publicKey ? await encryptData(publicKey, plaintext) : plaintext;

  const response = await fetch("https://<Api Endpoint>/api/print", {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify({ target, data }),
  });

  if (!response.ok) throw await response.json();
  return { status: "success" };
}

const target = "<Printer ID>";
const publicKey = "MIIBIjANBgkqhkiG9w0BAQEFAAO...";
const printData = {
  url: "https://example.com/document.pdf",
  copies: 1,
  id: "order_123",
  callbackUrl: "https://your-server.com/callback",
};

sendPrintRequest(target, printData, publicKey)
  .then(() => console.log("Encrypted mode - request successful"))
  .catch((error) => console.error("Request failed:", error));

sendPrintRequest(target, printData)
  .then(() => console.log("Plaintext mode - request successful"))
  .catch((error) => console.error("Request failed:", error));