Started capturing playlist_index on indexing pass

lib/pinchflat/yt_dlp/media.ex

@@ -11,7 +11,8 @@ defmodule Pinchflat.YtDlp.Media do
     :livestream,
     :short_form_content,
     :uploaded_at,
-    :duration_seconds
+    :duration_seconds,
+    :playlist_index
   ]
 
   defstruct [
@@ -22,7 +23,8 @@ defmodule Pinchflat.YtDlp.Media do
     :livestream,
     :short_form_content,
     :uploaded_at,
-    :duration_seconds
+    :duration_seconds,
+    :playlist_index
   ]
 
   alias __MODULE__
@@ -84,9 +86,11 @@ defmodule Pinchflat.YtDlp.Media do
 
   @doc """
   Returns the output template for yt-dlp's indexing command.
+
+  NOTE: playlist_index is really only useful for playlists that will never change their order.
   """
   def indexing_output_template do
-    "%(.{id,title,was_live,webpage_url,description,aspect_ratio,duration,upload_date,timestamp})j"
+    "%(.{id,title,was_live,webpage_url,description,aspect_ratio,duration,upload_date,timestamp,playlist_index})j"
   end
 
   @doc """
@@ -104,7 +108,8 @@ defmodule Pinchflat.YtDlp.Media do
       livestream: !!response["was_live"],
       duration_seconds: response["duration"] && round(response["duration"]),
       short_form_content: response["webpage_url"] && short_form_content?(response),
-      uploaded_at: response["upload_date"] && parse_uploaded_at(response)
+      uploaded_at: response["upload_date"] && parse_uploaded_at(response),
+      playlist_index: response["playlist_index"] || 0
     }
   end
 

test/pinchflat/yt_dlp/media_test.exs

@@ -110,8 +110,10 @@ defmodule Pinchflat.YtDlp.MediaTest do
 
   describe "indexing_output_template/0" do
     test "contains all the greatest hits" do
-      assert "%(.{id,title,was_live,webpage_url,description,aspect_ratio,duration,upload_date,timestamp})j" ==
+      attrs = ~w(id title was_live webpage_url description aspect_ratio duration upload_date timestamp playlist_index)a
-               Media.indexing_output_template()
+      formatted_attrs = "%(.{#{Enum.join(attrs, ",")}})j"
+
+      assert formatted_attrs == Media.indexing_output_template()
     end
   end
 
@@ -126,7 +128,8 @@ defmodule Pinchflat.YtDlp.MediaTest do
         "aspect_ratio" => 1.0,
         "duration" => 60,
         "upload_date" => "20210101",
-        "timestamp" => 1_600_000_000
+        "timestamp" => 1_600_000_000,
+        "playlist_index" => 1
       }
 
       assert %Media{
@@ -137,7 +140,8 @@ defmodule Pinchflat.YtDlp.MediaTest do
                livestream: false,
                short_form_content: false,
                uploaded_at: ~U[2020-09-13 12:26:40Z],
-               duration_seconds: 60
+               duration_seconds: 60,
+               playlist_index: 1
              } == Media.response_to_struct(response)
     end