if os.environ.get("MOUNT_MEDIA"):
    MEDIA_ROOT = "/app/media"
    print("Using Railway mounted volume for MEDIA_ROOT")
else:
    MEDIA_ROOT = BASE_DIR / "media"
    print("Using local folder for MEDIA_ROOT")

MEDIA_URL = "/media/"

urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
urlpatterns += static(settings.STATIC_URL, document_root=settings.STATIC_ROOT)

    image = models.ImageField(upload_to="products", default="product.jpg")
    description = models.TextField(blank=True, null=True)

@login_required
def edit_product(request, pk):

    product = get_object_or_404(Product, pk=pk, user=request.user)
    

    if request.method == "GET":
        # print("GET request for product data")
        # Return product data as JSON for prefill
        return JsonResponse({
            "id": product.id,
            "name": product.name,
            "price": float(product.price),
            "discounted_price": float(product.discounted_price) if product.discounted_price else "",
            "stock_quantity": product.stock_quantity,
            "description": product.description,
            "status": product.status,
            "image": product.image.url if product.image and hasattr(product.image, "url") else ""
        })

    elif request.method == "POST":
        # Update product with submitted form data
        product.name = request.POST.get("name")
        product.price = request.POST.get("price")
        product.discounted_price = request.POST.get("discounted_price") or None
        product.stock_quantity = request.POST.get("stock_quantity")
        product.description = request.POST.get("description")
        product.status = request.POST.get("status") == "True"

        if "image" in request.FILES:
            product.image = request.FILES["image"]

        product.save()

        return JsonResponse({"success": True, "message": "Product updated successfully!"})

    return JsonResponse({"error": "Invalid request"}, status=400)

// Fetch data to prefill
      fetch("{% url 'back:edit_product' 0 %}".replace("0", currentEditId))
        .then((res) => res.json())
        .then((data) => {
          document.getElementById("edit_name").value = data.name;
          document.getElementById("edit_price").value = data.price;
          document.getElementById("edit_discount_price").value = data.discounted_price;
          document.getElementById("edit_stock").value = data.stock_quantity;
          document.getElementById("edit_description").value = data.description;
          document.getElementById("edit_status").value = data.status ? "True" : "False";

          preview.innerHTML = "";
          if (data.image) {
            const img = document.createElement("img");
            img.src = data.image;
            preview.appendChild(img);
          }
        });