def validate_can_delete_message(user_profile: UserProfile,
message: Message) -> None:
if user_profile.is_realm_admin:
# Admin can delete any message, any time.
return
if message.sender != user_profile:
# Users can only delete messages sent by them.
raise JsonableError(
_("You don't have permission to delete this message"))
if not user_profile.can_delete_own_message():
# Only user with roles as allowed by delete_own_message_policy can delete message.
raise JsonableError(
_("You don't have permission to delete this message"))
deadline_seconds: Optional[
int] = user_profile.realm.message_content_delete_limit_seconds
if deadline_seconds is None:
# None means no time limit to delete message
return
if (timezone_now() -
message.date_sent) > datetime.timedelta(seconds=deadline_seconds):
# User can not delete message after deadline time of realm
raise JsonableError(
_("The time limit for deleting this message has passed"))
return
