[Enhancement] Optionally use the YouTube API for improved fast indexing (#282)

* Started adding youtube API for fast indexing

* Hooked youtube API into fast indexing

* Added youtube_api_key to settings

* Added youtube api key to settings UI

* Added tests

* Refactored the youtube api module

* More refactor

* Changed editing mode name from basic to standard

* [WIP] started on copy changes

* Updated copy

lib/pinchflat_web/controllers/settings/setting_html.ex

@@ -14,9 +14,14 @@ defmodule PinchflatWeb.Settings.SettingHTML do
 
   def apprise_server_help do
     url = "https://github.com/caronc/apprise/wiki/URLBasics"
-    classes = "underline decoration-bodydark decoration-1 hover:decoration-white"
 
-    ~s(Server endpoint for Apprise notifications when new media is found. See <a href="#{url}" class="#{classes}" target="_blank">Apprise docs</a> for more information)
+    ~s(Server endpoint for Apprise notifications when new media is found. See <a href="#{url}" class="#{help_link_classes()}" target="_blank">Apprise docs</a> for more information)
+  end
+
+  def youtube_api_help do
+    url = "https://github.com/kieraneglin/pinchflat/wiki/Generating-a-YouTube-API-key"
+
+    ~s(API key for YouTube Data API v3. Greatly improves the accuracy of Fast Indexing. See <a href="#{url}" class="#{help_link_classes()}" target="_blank">here</a> for details on generating an API key)
   end
 
   def diagnostic_info_string do
@@ -28,4 +33,8 @@ defmodule PinchflatWeb.Settings.SettingHTML do
     - Timezone: #{Application.get_env(:pinchflat, :timezone)}
     """
   end
+
+  defp help_link_classes do
+    "underline decoration-bodydark decoration-1 hover:decoration-white"
+  end
 end