feat: datasheet upload and auto-retrieve

- store datasheet PDFs on the server
- download PDF automatically when given a link

lib/components_elixir/inventory.ex

@@ -320,6 +320,30 @@ defmodule ComponentsElixir.Inventory do
     |> Repo.insert()
   end
 
+  @doc """
+  Creates a component and downloads datasheet from URL if provided.
+  """
+  def create_component_with_datasheet(attrs \\ %{}) do
+    # If a datasheet_url is provided, download it
+    updated_attrs =
+      case Map.get(attrs, "datasheet_url") do
+        url when is_binary(url) and url != "" ->
+          case ComponentsElixir.DatasheetDownloader.download_pdf_from_url(url) do
+            {:ok, filename} ->
+              Map.put(attrs, "datasheet_filename", filename)
+            {:error, _reason} ->
+              # Continue without datasheet file if download fails
+              attrs
+          end
+        _ ->
+          attrs
+      end
+
+    %Component{}
+    |> Component.changeset(updated_attrs)
+    |> Repo.insert()
+  end
+
   @doc """
   Updates a component.
   """
@@ -329,6 +353,34 @@ defmodule ComponentsElixir.Inventory do
     |> Repo.update()
   end
 
+  @doc """
+  Updates a component and downloads datasheet from URL if provided.
+  """
+  def update_component_with_datasheet(%Component{} = component, attrs) do
+    # If a datasheet_url is provided and changed, download it
+    updated_attrs =
+      case Map.get(attrs, "datasheet_url") do
+        url when is_binary(url) and url != "" and url != component.datasheet_url ->
+          case ComponentsElixir.DatasheetDownloader.download_pdf_from_url(url) do
+            {:ok, filename} ->
+              # Delete old datasheet file if it exists
+              if component.datasheet_filename do
+                ComponentsElixir.DatasheetDownloader.delete_datasheet_file(component.datasheet_filename)
+              end
+              Map.put(attrs, "datasheet_filename", filename)
+            {:error, _reason} ->
+              # Keep existing filename if download fails
+              attrs
+          end
+        _ ->
+          attrs
+      end
+
+    component
+    |> Component.changeset(updated_attrs)
+    |> Repo.update()
+  end
+
   @doc """
   Deletes a component.
   """