separate playlist generation

src/download.rs

@@ -53,6 +53,14 @@ impl<'a> Specification<'a> {
     pub(crate) fn path_from_id(&self, id: &str) -> Option<&path::Path> {
         self.files.get(id).map(|v| &**v)
     }
+
+    pub(crate) fn feed(&self) -> &BTreeMap<chrono::NaiveDateTime, Vec<Episode<'a>>> {
+        &self.feed
+    }
+
+    pub(crate) fn into_feed_and_files(self) -> (BTreeMap<chrono::NaiveDateTime, Vec<Episode<'a>>>, HashMap<Cow<'a, str>, Cow<'a, path::Path>>) {
+        (self.feed, self.files)
+    }
 }
 
 #[derive(Debug, serde::Serialize, serde::Deserialize)]