feat: add guild & channel properties to ThreadMembersUpdate (#1504)

Author: Damego

interactions/api/events/discord.py

@@ -249,7 +249,7 @@ class ThreadMemberUpdate(ThreadCreate):
 
 
 @attrs.define(eq=False, order=False, hash=False, kw_only=False)
-class ThreadMembersUpdate(BaseEvent):
+class ThreadMembersUpdate(GuildEvent):
     """Dispatched when anyone is added or removed from a thread."""
 
     id: "Snowflake_Type" = attrs.field(
@@ -263,6 +263,11 @@ class ThreadMembersUpdate(BaseEvent):
     removed_member_ids: List["Snowflake_Type"] = attrs.field(repr=False, factory=list)
     """Users removed from the thread"""
 
+    @property
+    def channel(self) -> Optional["TYPE_THREAD_CHANNEL"]:
+        """The thread channel this event is dispatched from"""
+        return self.client.get_channel(self.id)
+
 
 @attrs.define(eq=False, order=False, hash=False, kw_only=False)
 class GuildJoin(GuildEvent):

interactions/api/events/processors/thread_events.py

@@ -43,6 +43,7 @@ async def _on_raw_thread_members_update(self, event: "RawGatewayEvent") -> None:
         g_id = event.data.get("guild_id")
         self.dispatch(
             events.ThreadMembersUpdate(
+                g_id,
                 event.data.get("id"),
                 event.data.get("member_count"),
                 [await self.cache.fetch_member(g_id, m["user_id"]) for m in event.data.get("added_members", [])],