const API_BASE = "https://qp2fhnpbhq4a5uvtp7bpe6ocfa0xzdgv.lambda-url.eu-west-2.on.aws";
const SITE_URL = "https://d4l9v4vlr9mz6.cloudfront.net";

const landingStatus = document.querySelector("#checkout-status");
const successStatus = document.querySelector("#success-status");
const licenseCard = document.querySelector("#license-card");
const licenseOutput = document.querySelector("#license-output");
const copyLicenseButton = document.querySelector("#copy-license-button");

const postJson = async (path, body) => {
  const response = await fetch(`${API_BASE}${path}`, {
    method: "POST",
    headers: { "content-type": "application/json" },
    body: JSON.stringify(body)
  });

  if (!response.ok) {
    throw new Error((await response.text()) || "Request failed.");
  }

  return response.json();
};

const startCheckout = async () => {
  if (!API_BASE.startsWith("http")) {
    throw new Error("Checkout API is not configured yet.");
  }

  if (landingStatus) {
    landingStatus.textContent = "Creating Stripe checkout session...";
  }

  const payload = await postJson("/checkout/session", {
    origin: window.location.origin || SITE_URL || "unknown"
  });

  window.location.href = payload.checkoutUrl;
};

const loadSuccess = async () => {
  const params = new URLSearchParams(window.location.search);
  const sessionId = params.get("session_id");
  if (!sessionId) {
    if (successStatus) {
      successStatus.textContent = "Stripe session_id is missing from this page URL.";
    }
    return;
  }

  if (successStatus) {
    successStatus.textContent = "Retrieving license key...";
  }

  try {
    const payload = await postJson("/checkout/session-license", { sessionId });
    if (licenseOutput) {
      licenseOutput.value = payload.licenseKey;
    }
    if (licenseCard) {
      licenseCard.classList.remove("hidden");
    }
    if (successStatus) {
      successStatus.textContent = `Premium ready for ${payload.customerEmail}`;
    }
  } catch (error) {
    if (successStatus) {
      successStatus.textContent = error instanceof Error ? error.message : String(error);
    }
  }
};

document.querySelectorAll("#buy-now-button, #buy-now-pricing-button").forEach((button) => {
  button.addEventListener("click", async () => {
    try {
      await startCheckout();
    } catch (error) {
      if (landingStatus) {
        landingStatus.textContent = error instanceof Error ? error.message : String(error);
      }
    }
  });
});

copyLicenseButton?.addEventListener("click", async () => {
  if (!licenseOutput) {
    return;
  }

  await navigator.clipboard.writeText(licenseOutput.value);
  copyLicenseButton.textContent = "Copied";
  window.setTimeout(() => {
    copyLicenseButton.textContent = "Copy license key";
  }, 1200);
});

if (document.body.dataset.page === "success") {
  loadSuccess();
}