/*
    * Copyright 2012 the original author or authors.
    *
    * 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.openehealth.ipf.platform.camel.ihe.mllp.core.intercept.consumer;
  
  import lombok.experimental.Delegate;
  import org.apache.camel.Exchange;
  import org.openehealth.ipf.commons.ihe.core.payload.ExpressionResolver;
  import org.openehealth.ipf.commons.ihe.core.payload.SpringExpressionResolver;
  import org.openehealth.ipf.platform.camel.ihe.core.InterceptorFactorySupport;
  import org.openehealth.ipf.platform.camel.ihe.core.InterceptorSupport;
  import org.openehealth.ipf.platform.camel.ihe.mllp.core.MllpEndpoint;
  import org.openehealth.ipf.platform.camel.ihe.mllp.core.intercept.MllpPayloadLoggerBase;
  
  /**
   * Consumer-side MLLP interceptor which stores outgoing payload
   * into files with user-defined name patterns.
   * <p>
   * Members of {@link MllpPayloadLoggerBase} are mixed into this class.
   *
   * @author Dmytro Rud
   */
  public class ConsumerOutPayloadLoggerInterceptor extends InterceptorSupport<MllpEndpoint<?,?,?>> {
      @Delegate private final MllpPayloadLoggerBase base = new MllpPayloadLoggerBase();
  
      /**
       * Instantiation, implicitly using a {@link SpringExpressionResolver}
       *
       * @param fileNamePattern file name pattern
       */
      public ConsumerOutPayloadLoggerInterceptor(String fileNamePattern) {
          this(new SpringExpressionResolver(fileNamePattern));
      }
  
      /**
       * Instantiation, explicitly using a ExpressionResolver instance
       *
       * @param resolver ExpressionResolver instance
       * @since 3.1
       */
      public ConsumerOutPayloadLoggerInterceptor(ExpressionResolver resolver) {
          super();
          addBefore(ConsumerStringProcessingInterceptor.class.getName());
          setExpressionResolver(resolver);
      }
  
      @Override
      public void process(Exchange exchange) throws Exception {
          getWrappedProcessor().process(exchange);
          if (canProcess()) {
              logPayload(exchange, true);
          }
      }
  
      public static class Factory extends InterceptorFactorySupport<MllpEndpoint<?,?,?>, ConsumerOutPayloadLoggerInterceptor> {
  
          private final ExpressionResolver resolver;
          private boolean locallyEnabled = true;
  
          public Factory(String fileNamePattern) {
              this(new SpringExpressionResolver(fileNamePattern));
          }
  
          public Factory(ExpressionResolver resolver) {
              super(ConsumerOutPayloadLoggerInterceptor.class);
              this.resolver = resolver;
          }
  
          @Override
          public ConsumerOutPayloadLoggerInterceptor getNewInstance() {
              ConsumerOutPayloadLoggerInterceptor interceptor = new ConsumerOutPayloadLoggerInterceptor(resolver);
              interceptor.setLocallyEnabled(locallyEnabled);
              return interceptor;
          }
  
          public void setLocallyEnabled(boolean locallyEnabled) {
              this.locallyEnabled = locallyEnabled;
          }
      }
  }