def is_user_managing_in_calendar(session, calendar_name, fas_user):
""" Returns True if the user is in a group set as editor of the
calendar and False otherwise. It will also return True if there are
no groups set as editor the calendar.
:arg session: the database session to use
:arg calendar_name: the name of the calendar of interest.
:arg fas_user: a FAS user object with all the info.
"""
editor_groups = Calendar.get_editor_groups(session, calendar_name)
admin_groups = Calendar.get_admin_groups(session, calendar_name)
if not editor_groups:
return True
else:
return len(
set(editor_groups).intersection(set(fas_user.groups))
) >= 1 or len(
set(admin_groups).intersection(set(fas_user.groups))
) >= 1
