Split list_packs

lib/pleroma/web/emoji_api/emoji_api_controller.ex

@@ -23,47 +23,49 @@ def reload(conn, _params) do
   a map of "pack directory name" to pack.json contents.
   """
   def list_packs(conn, _params) do
+    with {:ok, results} <- File.ls(@emoji_dir_path) do
       pack_infos =
-      case File.ls(@emoji_dir_path) do
-        {:error, _} ->
-          %{}
-
-        {:ok, results} ->
         results
-          |> Enum.filter(fn file ->
+        |> Enum.filter(&has_pack_json?/1)
+        |> Enum.map(&load_pack/1)
+        # Check if all the files are in place and can be sent
+        |> Enum.map(&validate_pack/1)
+        # Transform into a map of pack-name => pack-data
+        |> Enum.into(%{})
+
+      json(conn, pack_infos)
+    end
+  end
+
+  defp has_pack_json?(file) do
     dir_path = Path.join(@emoji_dir_path, file)
     # Filter to only use the pack.json packs
     File.dir?(dir_path) and File.exists?(Path.join(dir_path, "pack.json"))
-          end)
-          |> Enum.map(fn pack_name ->
+  end
+
+  defp load_pack(pack_name) do
     pack_path = Path.join(@emoji_dir_path, pack_name)
     pack_file = Path.join(pack_path, "pack.json")
 
     {pack_name, Jason.decode!(File.read!(pack_file))}
-          end)
-          # Transform into a map of pack-name => pack-data
-          # Check if all the files are in place and can be sent
-          |> Enum.map(fn {name, pack} ->
+  end
+
+  defp validate_pack({name, pack}) do
     pack_path = Path.join(@emoji_dir_path, name)
 
     if can_download?(pack, pack_path) do
       archive_for_sha = make_archive(name, pack, pack_path)
       archive_sha = :crypto.hash(:sha256, archive_for_sha) |> Base.encode16()
 
-              {name,
+      pack =
         pack
         |> put_in(["pack", "can-download"], true)
-               |> put_in(["pack", "download-sha256"], archive_sha)}
-            else
-              {name,
-               pack
-               |> put_in(["pack", "can-download"], false)}
-            end
-          end)
-          |> Enum.into(%{})
-      end
+        |> put_in(["pack", "download-sha256"], archive_sha)
 
-    conn |> json(pack_infos)
+      {name, pack}
+    else
+      {name, put_in(pack, ["pack", "can-download"], false)}
+    end
   end
 
   defp can_download?(pack, pack_path) do
@@ -159,6 +161,7 @@ def download_from(conn, %{"instance_address" => address, "pack_name" => name} =
       |> Map.get(:body)
       |> Jason.decode!()
       |> Map.get(name)
+
     pfiles = full_pack["files"]
 
     pack_info_res =