feat: add has subtitle helper

lib/media_server_web/helpers.ex

@@ -69,4 +69,8 @@ defmodule MediaServerWeb.Helpers do
     |> Enum.filter(fn item -> String.contains?(item, ".srt") end)
     |> List.first()
   end
+
+  def has_subtitle(path) do
+    !is_nil(get_subtitle(path))
+  end
 end

test/media_server_web/helpers_test.exs

@@ -11,19 +11,31 @@ defmodule MediaServerWeb.HelpersTest do
   @expected [".DS_Store", "Caminandes.Llama.Drama.1080p.mp4", "Caminandes.Llama.Drama.1080p.srt"]
   @filtered "Caminandes.Llama.Drama.1080p.srt"
 
-  test "it should have subtitle" do
+  test "it should get subtitle" do
     assert File.ls!(@path) == @expected
 
     assert MediaServerWeb.Helpers.get_subtitle(@path) == @filtered
   end
 
+  test "it has subtitle" do
+    assert File.ls!(@path) == @expected
+
+    assert MediaServerWeb.Helpers.has_subtitle(@path)
+  end
+
   @path_without "fixtures/movies/Caminandes Gran Dillama (2013)"
   @expected_without [".DS_Store", "Caminandes.Gran.Dillama.1080p.mp4"]
   @filtered_without nil
 
-  test "it should not have subtitle" do
+  test "it should not get subtitle" do
     assert File.ls!(@path_without) == @expected_without
 
     assert MediaServerWeb.Helpers.get_subtitle(@path_without) == @filtered_without
   end
+
+  test "it does not have subtitle" do
+    assert File.ls!(@path_without) == @expected_without
+
+    refute MediaServerWeb.Helpers.has_subtitle(@path_without)
+  end
 end