from univention.admin.hook import simpleHook

class AttributeHook(simpleHook):
        attribute_name = []

        def hook_open(self, obj):
                value = obj.get(self.attribute_name)
                obj[self.attribute_name] = self.map_attribute_value_to_udm(value)

        def hook_ldap_modlist(self, obj, ml):
                new_ml = []
                for key, old_value, new_value in ml: 
                        if key == self.attribute_name:
                                new_value = self.map_attribute_value_to_ldap(new_value)
                        new_ml.append((key, old_value, new_value))
                return new_ml

        def map_attribute_value_to_ldap(self, value):
                # return value as it shall be saved in ldap
                return value

        def map_attribute_value_to_udm(self, value):
                # return value as it shall be used in udm objects
                # needs to be syntax compliant
                return value