fbmessenger.android: expose contacts

my/fbmessenger/android.py

@@ -111,12 +111,18 @@ def _process_db_msys(db: sqlite3.Connection) -> Iterator[Res[Entity]]:
     senders: Dict[str, Sender] = {}
     for r in db.execute('SELECT CAST(id AS TEXT) AS id, name FROM contacts'):
         s = Sender(
-            id=r['id'],
+            id=r['id'],    # looks like it's server id? same used on facebook site
             name=r['name'],
         )
+        # NOTE https://www.messenger.com/t/{contant_id} for permalink
         senders[s.id] = s
         yield s
 
+    # TODO what is fb transport??
+    # TODO what are client_contacts?? has pk or something
+
+    # TODO client_threads/client_messages -- possibly for end to end encryption or something?
+
     # TODO can we get it from db? could infer as the most common id perhaps?
     self_id = config.facebook_id
     thread_users: Dict[str, List[Sender]] = {}
@@ -237,6 +243,15 @@ def _process_db_threads_db2(db: sqlite3.Connection) -> Iterator[Res[Entity]]:
         )
 
 
+def contacts() -> Iterator[Res[Sender]]:
+    for x in unique_everseen(_entities):
+        if isinstance(x, Exception):
+            yield x
+            continue
+        if isinstance(x, Sender):
+            yield x
+
+
 def messages() -> Iterator[Res[Message]]:
     senders: Dict[str, Sender] = {}
     msgs: Dict[str, Message] = {}