Add basic free-busy report

radicale/storage/__init__.py

@@ -158,6 +158,24 @@ class BaseCollection:
                 continue
             yield item, simple and (start <= istart or iend <= end)
 
+    def get_by_time(self, start: int , end: int
+                    ) -> Iterable["radicale_item.Item"]:
+        """Fetch all items within a start and end time range.
+
+        Returns a iterable of ``item``s.
+
+        """
+        if not self.tag:
+            return
+        for item in self.get_all():
+            # TODO: Any other component_name here?
+            if item.component_name not in ("VEVENT",):
+                continue
+            istart, iend = item.time_range
+            if istart >= end or iend <= start:
+                continue
+            yield item
+
     def has_uid(self, uid: str) -> bool:
         """Check if a UID exists in the collection."""
         for item in self.get_all():