from vbv_lernwelt.course.models import CourseSessionUser


def has_course_access(request, obj):
    if request.user.is_superuser:
        return True

    course = obj.specific.get_course()

    # attached to CourseSession
    course_session = CourseSessionUser.objects.filter(
        course_session__course_id=course.id, user=request.user
    ).exists()

    if course_session:
        return True

    # TODO is trainer/expert of session

    # TODO check school class access
    return False