first implementation of fetchable feeds

1 files changed, 17 insertions, 0 deletions

diff --git a/pyaggr3g470r/controllers/feed.py b/pyaggr3g470r/controllers/feed.py
index 5ada1a48..ce1c413f 100644
--- a/pyaggr3g470r/controllers/feed.py
+++ b/pyaggr3g470r/controllers/feed.py
@@ -1,6 +1,23 @@
+from datetime import datetime, timedelta
 from .abstract import AbstractController
 from pyaggr3g470r.models import Feed
 
+DEFAULT_MAX_ERROR = 3
+DEFAULT_LIMIT = 5
+
 
 class FeedController(AbstractController):
     _db_cls = Feed
+
+    def list_fetchable(self, max_error=DEFAULT_MAX_ERROR, limit=DEFAULT_LIMIT):
+        from pyaggr3g470r.controllers import UserController
+        now = datetime.now()
+        user = UserController(self.user_id).get(id=self.user_id)
+        max_last_refresh = now - timedelta(minutes=user.refresh_rate or 60)
+        feeds = [feed for feed in self.read(user_id=self.user_id,
+                          error_count__le=max_error,
+                          last_refreshed__lt=max_last_refresh).limit(limit)]
+
+        self.update({'id__in': [feed.id for feed in feeds]},
+                    {'last_refreshed': now})
+        return feeds