Add type hints to synapse.events.*. (#11066)

Except `synapse/events/__init__.py`, which will be done in a follow-up.

1 files changed, 20 insertions, 2 deletions

diff --git a/synapse/handlers/room.py b/synapse/handlers/room.py
index 7072bca1fc..6f39e9446f 100644
--- a/synapse/handlers/room.py
+++ b/synapse/handlers/room.py
@@ -465,17 +465,35 @@ class RoomCreationHandler:
         # the room has been created
         # Calculate the minimum power level needed to clone the room
         event_power_levels = power_levels.get("events", {})
+        if not isinstance(event_power_levels, dict):
+            event_power_levels = {}
         state_default = power_levels.get("state_default", 50)
+        try:
+            state_default_int = int(state_default)  # type: ignore[arg-type]
+        except (TypeError, ValueError):
+            state_default_int = 50
         ban = power_levels.get("ban", 50)
-        needed_power_level = max(state_default, ban, max(event_power_levels.values()))
+        try:
+            ban = int(ban)  # type: ignore[arg-type]
+        except (TypeError, ValueError):
+            ban = 50
+        needed_power_level = max(
+            state_default_int, ban, max(event_power_levels.values())
+        )
 
         # Get the user's current power level, this matches the logic in get_user_power_level,
         # but without the entire state map.
         user_power_levels = power_levels.setdefault("users", {})
+        if not isinstance(user_power_levels, dict):
+            user_power_levels = {}
         users_default = power_levels.get("users_default", 0)
         current_power_level = user_power_levels.get(user_id, users_default)
+        try:
+            current_power_level_int = int(current_power_level)  # type: ignore[arg-type]
+        except (TypeError, ValueError):
+            current_power_level_int = 0
         # Raise the requester's power level in the new room if necessary
-        if current_power_level < needed_power_level:
+        if current_power_level_int < needed_power_level:
             user_power_levels[user_id] = needed_power_level
 
         await self._send_events_for_new_room(