/* 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 org.activiti.validation.validator.impl;

import java.util.List;

import org.activiti.bpmn.model.BpmnModel;
import org.activiti.bpmn.model.EventDefinition;
import org.activiti.bpmn.model.IntermediateCatchEvent;
import org.activiti.bpmn.model.MessageEventDefinition;
import org.activiti.bpmn.model.Process;
import org.activiti.bpmn.model.SignalEventDefinition;
import org.activiti.bpmn.model.TimerEventDefinition;
import org.activiti.validation.ValidationError;
import org.activiti.validation.validator.Problems;
import org.activiti.validation.validator.ProcessLevelValidator;

/**
 * @author jbarrez
 */
public class IntermediateCatchEventValidator extends ProcessLevelValidator {

	@Override
	protected void executeValidation(BpmnModel bpmnModel, Process process, List<ValidationError> errors) {
		List<IntermediateCatchEvent> intermediateCatchEvents = process.findFlowElementsOfType(IntermediateCatchEvent.class);
		for (IntermediateCatchEvent intermediateCatchEvent : intermediateCatchEvents) {
			 EventDefinition eventDefinition = null;
		    if (!intermediateCatchEvent.getEventDefinitions().isEmpty()) {
		      eventDefinition = intermediateCatchEvent.getEventDefinitions().get(0);
		    }
		   
		    if (eventDefinition == null) {
		    	addError(errors, Problems.INTERMEDIATE_CATCH_EVENT_NO_EVENTDEFINITION, process, intermediateCatchEvent, 
		    			"No event definition for intermediate catch event ");
		    } else {
		    	if (!(eventDefinition instanceof TimerEventDefinition)
              && !(eventDefinition instanceof SignalEventDefinition)
              && !(eventDefinition instanceof MessageEventDefinition)) {
		    		addError(errors, Problems.INTERMEDIATE_CATCH_EVENT_INVALID_EVENTDEFINITION, process, intermediateCatchEvent, 
		    				"Unsupported intermediate catch event type");
		    	}
		    }
		}
	}

}