now with pagination

lib/labelmaker_web/controllers/labels_controller.ex

@@ -1,11 +1,42 @@
 defmodule LabelmakerWeb.LabelsController do
   use LabelmakerWeb, :controller
+  alias LabelmakerWeb.Constants
 
   @label_dir Path.join(:code.priv_dir(:labelmaker), "static/labels")
 
-  def index(conn, _params) do
-    labels = list_labels()
-    render(conn, :index, labels: labels)
+  def index(conn, params) do
+    page = parse_page(params["page"])
+    all_labels = list_labels()
+    total_count = length(all_labels)
+    total_pages = ceil(total_count / Constants.labels_per_page())
+
+    # Ensure page is within valid range
+    page = max(1, min(page, max(total_pages, 1)))
+
+    labels = paginate(all_labels, page)
+
+    render(conn, :index,
+      labels: labels,
+      page: page,
+      total_pages: total_pages,
+      total_count: total_count,
+      per_page: Constants.labels_per_page()
+    )
+  end
+
+  defp parse_page(nil), do: 1
+
+  defp parse_page(page_str) do
+    case Integer.parse(page_str) do
+      {page, _} when page > 0 -> page
+      _ -> 1
+    end
+  end
+
+  defp paginate(labels, page) do
+    labels
+    |> Enum.drop((page - 1) * Constants.labels_per_page())
+    |> Enum.take(Constants.labels_per_page())
   end
 
   defp list_labels do