[Housekeeping] Store the upload event as a datetime rather than a date (#269)

* [WIP] renamed and migrated upload_date column

* Refactored yt-dlp media module

* Refactored parse_upload_date

* Refactored media item upload_date_index

* Got media tests running

* Refactored media item table live

* Cleaned up the stragglers

* Fixed old oversight re: original_url

lib/pinchflat/yt_dlp/media.ex

@@ -10,7 +10,7 @@ defmodule Pinchflat.YtDlp.Media do
     :original_url,
     :livestream,
     :short_form_content,
-    :upload_date,
+    :uploaded_at,
     :duration_seconds
   ]
 
@@ -21,7 +21,7 @@ defmodule Pinchflat.YtDlp.Media do
     :original_url,
     :livestream,
     :short_form_content,
-    :upload_date,
+    :uploaded_at,
     :duration_seconds
   ]
 
@@ -72,7 +72,7 @@ defmodule Pinchflat.YtDlp.Media do
   Returns the output template for yt-dlp's indexing command.
   """
   def indexing_output_template do
-    "%(.{id,title,was_live,webpage_url,description,aspect_ratio,duration,upload_date})j"
+    "%(.{id,title,was_live,webpage_url,description,aspect_ratio,duration,upload_date,timestamp})j"
   end
 
   @doc """
@@ -90,7 +90,7 @@ 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),
-      upload_date: response["upload_date"] && MetadataFileHelpers.parse_upload_date(response["upload_date"])
+      uploaded_at: response["upload_date"] && parse_uploaded_at(response)
     }
   end
 
@@ -110,6 +110,18 @@ defmodule Pinchflat.YtDlp.Media do
     end
   end
 
+  defp parse_uploaded_at(%{"timestamp" => ts} = response) when is_number(ts) do
+    case DateTime.from_unix(ts) do
+      {:ok, datetime} -> datetime
+      _ -> MetadataFileHelpers.parse_upload_date(response["upload_date"])
+    end
+  end
+
+  # This field is needed before inserting into the database, but absence
+  # of this field should fail at insert-time rather than here
+  defp parse_uploaded_at(%{"upload_date" => nil}), do: nil
+  defp parse_uploaded_at(response), do: MetadataFileHelpers.parse_upload_date(response["upload_date"])
+
   defp backend_runner do
     # This approach lets us mock the command for testing
     Application.get_env(:pinchflat, :yt_dlp_runner)