feat(elixir): QR code generate & download function

lib/components_elixir/inventory.ex

@@ -21,8 +21,17 @@ defmodule ComponentsElixir.Inventory do
     |> Repo.all()
 
     # Compute hierarchy fields for all locations efficiently
-    compute_hierarchy_fields_batch(locations)
+    processed_locations = compute_hierarchy_fields_batch(locations)
     |> Enum.sort_by(&{&1.level, &1.name})
+
+    # Ensure QR codes exist for all locations (in background)
+    spawn(fn ->
+      Enum.each(processed_locations, fn location ->
+        ComponentsElixir.QRCode.get_qr_image_url(location)
+      end)
+    end)
+
+    processed_locations
   end
 
   # Efficient batch computation of hierarchy fields
@@ -123,9 +132,18 @@ defmodule ComponentsElixir.Inventory do
     # Convert string keys to atoms to maintain consistency
     attrs = normalize_string_keys(attrs)
 
-    %StorageLocation{}
+    result = %StorageLocation{}
     |> StorageLocation.changeset(attrs)
     |> Repo.insert()
+
+    case result do
+      {:ok, location} ->
+        # Automatically generate QR code image
+        spawn(fn -> ComponentsElixir.QRCode.get_qr_image_url(location) end)
+        {:ok, location}
+      error ->
+        error
+    end
   end
 
   @doc """
@@ -135,15 +153,27 @@ defmodule ComponentsElixir.Inventory do
     # Convert string keys to atoms to maintain consistency
     attrs = normalize_string_keys(attrs)
 
-    storage_location
+    result = storage_location
     |> StorageLocation.changeset(attrs)
     |> Repo.update()
+
+    case result do
+      {:ok, updated_location} ->
+        # Automatically regenerate QR code image if name or hierarchy changed
+        spawn(fn -> ComponentsElixir.QRCode.get_qr_image_url(updated_location, force_regenerate: true) end)
+        {:ok, updated_location}
+      error ->
+        error
+    end
   end
 
   @doc """
   Deletes a storage location.
   """
   def delete_storage_location(%StorageLocation{} = storage_location) do
+    # Clean up QR code image before deleting
+    ComponentsElixir.QRCode.cleanup_qr_image(storage_location.id)
+
     Repo.delete(storage_location)
   end