fix: using the right field for the last update date

lib/podcast_feed/provider/archive/parser.ex

@@ -43,12 +43,12 @@ defmodule PodcastFeed.Provider.Archive.Parser do
     metadata_json |> Poison.decode!()
   end
 
-  def parse(identifier, %{"metadata" => metadata, "files" => files}, extra) do
+  def parse(identifier, metadata = %{"files" => files}, extra) do
     extra = files
     |> fetch_cover(identifier)
     |> enrich_extra_metadata_with_cover(extra)
 
-    %{podcast: podcast_data(metadata, extra), items: items_data(files, identifier)}
+    %{podcast: podcast_data(metadata, extra), items: items_data(metadata, identifier)}
   end
 
   # cover is nil
@@ -62,7 +62,7 @@ defmodule PodcastFeed.Provider.Archive.Parser do
   # image is already set in the extra_metadata
   defp enrich_extra_metadata_with_cover(_cover, extra), do: extra
 
-  defp podcast_data(metadata, extra) do
+  defp podcast_data(%{"metadata" => metadata, "item_last_updated" => last_updated}, extra) do
     %{
       title: metadata["title"],
       description: metadata["description"],
@@ -74,7 +74,7 @@ defmodule PodcastFeed.Provider.Archive.Parser do
       },
       keywords: metadata["subject"],
       pubDate: metadata["publicdate"] |> NaiveDateTime.from_iso8601!() |> DateTime.from_naive!("Etc/UTC"),
-      lastBuildDate: metadata["addeddate"] |> NaiveDateTime.from_iso8601!() |> DateTime.from_naive!("Etc/UTC"),
+      lastBuildDate: last_updated |> DateTime.from_unix!(:second),
       author: metadata["creator"],
       language: metadata["language"],
       image: %{
@@ -88,7 +88,8 @@ defmodule PodcastFeed.Provider.Archive.Parser do
     }
   end
 
-  defp items_data(files, identifier) do
+
+  defp items_data(%{"files" => files}, identifier) do
     files
     |> filter_audio_files()
     |> Enum.map(fn f -> to_feed_item(f, identifier, files) end)

lib/podcast_feed_web/templates/feed/feed.xml.eex

@@ -28,7 +28,7 @@
     <description><![CDATA[<%= @podcast.description %>]]></description>
     <itunes:summary><![CDATA[<%= @podcast.description %>]]></itunes:summary>
     <itunes:subtitle><![CDATA[<%= Regex.run(~r/\A(.{0,255})(?: |\.|\Z)/,  @podcast.description) |> List.last() %>]]></itunes:subtitle>
-    <lastBuildDate><%= @podcast.pubDate |> Calendar.DateTime.Format.rfc2822 %></lastBuildDate>
+    <lastBuildDate><%= @podcast.lastBuildDate |> Calendar.DateTime.Format.rfc2822 %></lastBuildDate>
     <%= for item <- @items do %>
     <item>
       <title><![CDATA[<%= item.title %>]]></title>
@@ -47,4 +47,4 @@
     </item>
     <% end %>
   </channel>
-</rss>
+</rss>