move rss stuff in a separate subpackage

my/rss/all.py

@@ -0,0 +1,29 @@
+from itertools import chain
+from typing import List, Dict
+
+from ._rss import Subscription
+
+from . import feedbin
+from . import feedly
+# TODO google reader?
+
+
+def get_all_subscriptions() -> List[Subscription]:
+    """
+    Keeps track of everything I ever subscribed to. It's useful to keep track of unsubscribed too
+    so you don't try to subscribe again (or at least take into account why you unsubscribed before)
+    """
+    states = {}
+    states.update(feedly.get_states())
+    states.update(feedbin.get_states())
+    by_url: Dict[str, Subscription] = {}
+    for _, feeds in sorted(states.items()):
+        for f in feeds:
+            if f.url not in by_url:
+                by_url[f.url] = f
+    res = []
+    last = {x.url: x for x in max(states.items())[1]}
+    for u, x in sorted(by_url.items()):
+        present = u in last
+        res.append(x._replace(subscribed=present))
+    return res