// --- Category Configuration ---
const CATEGORY_CONFIG = {
  3: { showLocation: false, webhook: "" }, // services
  4: { showLocation: true, webhook: "https://002-001-5dd6e535-4d1c-46bc-9bd9-42ad4bc5f082.odoo4projects.com/webhook/c76e6b4e-af2f-4bc3-9875-6460d0ffc8e3" }, // hosting
  5: { showLocation: false, webhook: "https://002-001-5dd6e535-4d1c-46bc-9bd9-42ad4bc5f082.odoo4projects.com/webhook/fd20e194-b821-4b1f-814f-7bb93ae16046" }, // Workshops
  7: { showLocation: false, webhook: "" }, // modules
};

// --- Helper: Get cookie by name ---
function getCookie(name) {
  const match = document.cookie.match(new RegExp('(^| )' + name + '=([^;]+)'));
  return match ? decodeURIComponent(match[2]) : null;
}

// --- Helper: Set cookie if not already set ---
function setCookieIfEmpty(name, value, days = 90) {
  if (!value) return;
  if (getCookie(name)) return; // Don't overwrite
  const date = new Date();
  date.setTime(date.getTime() + days * 24 * 60 * 60 * 1000);
  document.cookie = `${name}=${encodeURIComponent(value)}; expires=${date.toUTCString()}; path=/; SameSite=Lax`;
}

// --- Add UTM fields to form using cookies ---
function addUtmFields(form) {
  const utmParams = ["utm_source", "utm_medium", "utm_campaign", "utm_term", "utm_content"];
  const defaults = {
    utm_source: "homepage",
    utm_medium: "direct",
    utm_campaign: "none",
    utm_term: "",
    utm_content: ""
  };

  utmParams.forEach(param => {
    let input = form.querySelector(`input[name="${param}"]`);
    if (!input) {
      input = document.createElement("input");
      input.type = "hidden";
      input.name = param;
      form.appendChild(input);
    }
    // First check cookie, then fallback to default
    input.value = getCookie(param) || defaults[param];
  });
}

// --- Create Modal ---
function createModal() {
  const modal = document.createElement("div");
  modal.id = "buyNowModal";
  Object.assign(modal.style, {
    position: "fixed",
    top: "0",
    left: "0",
    width: "100%",
    height: "100%",
    backgroundColor: "rgba(0,0,0,0.6)",
    display: "none",
    justifyContent: "center",
    alignItems: "center",
    zIndex: "1000"
  });

  modal.innerHTML = `
    <div style="background: #fff; padding: 40px 30px; border-radius: 16px; max-width: 500px; width: 90%; position: relative; font-family: 'Arial', sans-serif; box-shadow: 0 10px 25px rgba(0,0,0,0.2);">
      <span id="closeModal" style="position: absolute; top: 15px; right: 20px; cursor: pointer; font-weight: bold; font-size: 24px; color: #555;">&times;</span>
      <h2 style="margin-bottom: 15px; font-size: 24px; color: #333;">Order Details</h2>
      <p id="productText" style="margin-bottom: 25px; font-weight: 500; color: #555;"></p>

      <form id="buyForm" style="display: flex; flex-direction: column; gap: 15px;">
        <select name="location" id="locationSelect" required style="display: none; padding: 12px 15px; font-size: 16px; border: 1px solid #ccc; border-radius: 8px; outline: none;">
          <option value="">Select Location</option>
          <option value="Boston">US, Boston</option>
          <option value="Manchester">UK, Manchester</option>
          <option value="Mumbai">IN, Mumbai</option>
          <option value="Saopaulo">BR, Sao Paulo</option>
          <option value="Meppel">NL, Meppel</option>
        </select>

        <input type="text" name="name" placeholder="Name" required style="padding: 12px 15px; border: 1px solid #ccc; border-radius: 8px;">
        <input type="text" name="company" placeholder="Company" required style="padding: 12px 15px; border: 1px solid #ccc; border-radius: 8px;">
        <input type="text" name="country" placeholder="Country" required style="padding: 12px 15px; border: 1px solid #ccc; border-radius: 8px;">
        <input type="text" name="street" placeholder="Street" required style="padding: 12px 15px; border: 1px solid #ccc; border-radius: 8px;">
        <div style="display: flex; gap: 10px;">
          <input type="text" name="zip" placeholder="ZIP" required style="max-width: 100px; flex: 1 1 0; padding: 12px 10px; border: 1px solid #ccc; border-radius: 8px;">
          <input type="text" name="town" placeholder="Town" required style="flex: 2 1 0; padding: 12px 10px; border: 1px solid #ccc; border-radius: 8px;">
        </div>
        <input type="email" name="email" placeholder="Email" required style="padding: 12px 15px; border: 1px solid #ccc; border-radius: 8px;">
        <input type="hidden" name="product">
        <input type="hidden" name="price">
        <input type="hidden" name="id">
        <input type="hidden" name="category">

        <button id="submitBuy" type="submit" style="padding: 14px; background: #007BFF; color: #fff; border: none; border-radius: 8px; cursor: pointer; font-size: 18px; font-weight: bold;">Send Order</button>
      </form>

      <div id="confirmation" style="display: none; margin-top: 20px; padding: 20px; background-color: #e6ffed; color: #056608; border-radius: 12px; text-align: center; font-weight: 500;">
        <p>Thank you for your purchase! 🎉</p>
        <button id="closeConfirmation" style="margin-top: 10px; padding: 10px 20px; background: #007BFF; color: #fff; border: none; border-radius: 8px; cursor: pointer;">Close</button>
      </div>
    </div>
  `;

  document.body.appendChild(modal);
  document.getElementById("closeModal").onclick = () => modal.style.display = "none";
  document.getElementById("closeConfirmation").onclick = () => {
    document.getElementById("confirmation").style.display = "none";
    modal.style.display = "none";
  };
  modal.onclick = e => { if (e.target === modal) modal.style.display = "none"; };
  return modal;
}

// --- Open Modal ---
function openModal(productHref) {
  const modal = document.getElementById("buyNowModal");
  const form = modal.querySelector("#buyForm");
  const confirmation = modal.querySelector("#confirmation");
  modal.style.display = "flex";
  form.style.display = "flex";
  confirmation.style.display = "none";

  const parts = productHref.split("/").filter(Boolean);
  const [id, price, category, ...productParts] = parts;
  const product = decodeURIComponent(productParts.join("/"));
  const categoryNum = parseInt(category, 10);
  const config = CATEGORY_CONFIG[categoryNum] || { showLocation: false, webhook: "" };

  const locationSelect = document.getElementById("locationSelect");
  if (config.showLocation) {
    locationSelect.style.display = "block";
    locationSelect.setAttribute("required", "true");
  } else {
    locationSelect.style.display = "none";
    locationSelect.removeAttribute("required");
    locationSelect.value = "";
  }

  form.querySelector('input[name="id"]').value = id || "";
  form.querySelector('input[name="price"]').value = price || "0";
  form.querySelector('input[name="category"]').value = category || "";
  form.querySelector('input[name="product"]').value = product || "Unknown";
  form.dataset.webhook = config.webhook || "";
  modal.querySelector("#productText").textContent = `We have send you the payment details for your order ${product} $${price} via mail.`;

  addUtmFields(form); // Read from cookie or defaults
}

// --- Handle Form Submit ---
function handleFormSubmit() {
  const form = document.getElementById("buyForm");
  const confirmation = document.getElementById("confirmation");

  form.addEventListener("submit", async (e) => {
    e.preventDefault();
    addUtmFields(form);

    const data = Object.fromEntries(new FormData(form).entries());
    const webhookUrl = form.dataset.webhook;

    if (!webhookUrl) {
      alert("No webhook configured for this category.");
      return;
    }

    try {
      const res = await fetch(webhookUrl, {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify(data),
      });

      if (res.ok) {
        form.style.display = "none";
        confirmation.style.display = "block";
        form.reset();
      } else {
        alert("Failed to submit form.");
      }
    } catch (err) {
      console.error(err);
      alert("Error submitting form.");
    }
  });
}

// --- Attach Buttons ---
function attachButtons() {
  const buttons = Array.from(document.querySelectorAll("button, a"));
  buttons.forEach(btn => {
    const text = btn.textContent.trim();
    if (text === "Buy Now" || text === "Book Now") {
      btn.addEventListener("click", (e) => {
        e.preventDefault();
        const href = btn.getAttribute("href") || btn.dataset.product || "Unknown/0/0";
        openModal(href);
      });
    }
  });
}

// --- Initialize ---
document.addEventListener("DOMContentLoaded", () => {
  createModal();
  handleFormSubmit();
  attachButtons();
});