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/* 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.camunda.bpm.camel.component;

import org.camunda.bpm.camel.common.CamundaBpmConsumer;
import org.camunda.bpm.camel.component.producer.CamundaBpmProducerFactory;
import org.camunda.bpm.engine.ProcessEngine;
import org.apache.camel.*;
import org.apache.camel.impl.DefaultEndpoint;

import java.util.Map;

/**
 * This class has been modified to be consistent with the changes to CamelBehavior and its implementations. The set of changes
 * significantly increases the flexibility of our Camel integration, as you can either choose one of three "out-of-the-box" modes,
 * or you can choose to create your own. Please reference the comments for the "CamelBehavior" class for more information on the 
 * out-of-the-box implementation class options.  
 * 
 * @author Ryan Johnston (@rjfsu), Tijs Rademakers
 */
public class CamundaBpmEndpointDefaultImpl extends DefaultEndpoint implements CamundaBpmEndpoint {

  private CamundaBpmComponent component;
  private CamundaBpmConsumer camundaBpmConsumer;
  private Map parameters;

  public CamundaBpmEndpointDefaultImpl(String uri, CamundaBpmComponent component, Map parameters) {
    super();
    setCamelContext(component.getCamelContext());
    setEndpointUri(uri);
    this.component = component;
    this.parameters = parameters;
  }

  public ProcessEngine getProcessEngine() {
    return this.component.getProcessEngine();
  }

  public void addConsumer(CamundaBpmConsumer consumer) {
    if (camundaBpmConsumer != null) {
      throw new RuntimeException("camunda BPM consumer already defined for " + getEndpointUri() + "!");
    }
    camundaBpmConsumer = consumer;
  }

  public void process(Exchange ex) throws Exception {
    if (camundaBpmConsumer == null) {
      throw new RuntimeException("camunda BPM consumer not defined for " + getEndpointUri());
    }
    camundaBpmConsumer.getProcessor().process(ex);
  }

  public Producer createProducer() throws Exception {
    return CamundaBpmProducerFactory.createProducer(this, getEndpointUri(), this.parameters);
  }

  public Consumer createConsumer(Processor processor) throws Exception {
    return new CamundaBpmConsumer(this, processor);
  }

  public boolean isSingleton() {
    return true;
  }
  @Override
  public boolean isLenientProperties() {
    return true;
  }
}