/*
 * Copyright (c) 2010-2013 Evolveum
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.evolveum.midpoint.notifications.impl.helpers;

import com.evolveum.midpoint.notifications.api.NotificationManager;
import com.evolveum.midpoint.notifications.api.events.Event;
import com.evolveum.midpoint.schema.result.OperationResult;
import com.evolveum.midpoint.task.api.Task;
import com.evolveum.midpoint.util.logging.Trace;
import com.evolveum.midpoint.util.logging.TraceManager;
import com.evolveum.midpoint.xml.ns._public.common.common_3.EventHandlerType;
import com.evolveum.midpoint.xml.ns._public.common.common_3.ExpressionType;

import org.springframework.stereotype.Component;

/**
 * @author mederly
 */
@Component
public class ExpressionFilterHelper extends BaseHelper {

    private static final Trace LOGGER = TraceManager.getTrace(ExpressionFilterHelper.class);

    @Override
    public boolean processEvent(Event event, EventHandlerType eventHandlerType, NotificationManager notificationManager, 
    		Task task, OperationResult result) {

        if (eventHandlerType.getExpressionFilter().isEmpty()) {
            return true;
        }

        logStart(LOGGER, event, eventHandlerType, eventHandlerType.getExpressionFilter());

        boolean retval = true;

        for (ExpressionType expressionType : eventHandlerType.getExpressionFilter()) {
            if (!evaluateBooleanExpressionChecked(expressionType, getDefaultVariables(event, result),
                    "event filter expression", task, result)) {
                retval = false;
                break;
            }
        }

        logEnd(LOGGER, event, eventHandlerType, retval);
        return retval;
    }
}