refactor: split out catalog

Author: cfbender

lib/manavault/catalog.ex

@@ -0,0 +1,21 @@
+defmodule Manavault.Catalog.CSV do
+  @moduledoc false
+
+  def row(values) do
+    values
+    |> Enum.map(&cell/1)
+    |> Enum.join(",")
+  end
+
+  defp cell(nil), do: ""
+
+  defp cell(value) do
+    value = to_string(value)
+
+    if String.contains?(value, [",", "\"", "\n"]) do
+      ~s("#{String.replace(value, "\"", "\"\"")}")
+    else
+      value
+    end
+  end
+end