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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.jclouds.rackspace.cloudloadbalancers.v1.functions;

import java.net.URI;

import jakarta.annotation.Resource;
import jakarta.inject.Inject;

import org.jclouds.logging.Logger;
import org.jclouds.rackspace.cloudloadbalancers.v1.domain.AccessRuleWithId;
import org.jclouds.rackspace.cloudloadbalancers.v1.domain.LoadBalancer;
import org.jclouds.rackspace.cloudloadbalancers.v1.domain.LoadBalancer.Builder;
import org.jclouds.rackspace.cloudloadbalancers.v1.domain.Metadata;
import org.jclouds.rackspace.cloudloadbalancers.v1.domain.VirtualIPWithId;

import com.google.common.base.Function;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;
import com.google.inject.assistedinject.Assisted;

public class ConvertLB implements Function {
   private static final String LOAD_BALANCERS = "loadbalancers";

   public interface Factory {
      ConvertLB createForEndpointAndRegion(URI endpoint, String region);
   }

   @Resource
   protected Logger logger = Logger.NULL;

   private final String region;
   private final URI endpoint;

   @Inject
   ConvertLB(@Assisted URI endpoint, @Assisted String region) {
      this.endpoint = endpoint;
      this.region = region.toUpperCase();
   }

   @Override
   public LoadBalancer apply(LB lb) {
      try {
         Builder builder = LoadBalancer.builder().id(lb.id).region(region).status(lb.status).name(lb.getName())
               .protocol(lb.getProtocol()).port(lb.getPort()).nodeCount(lb.nodeCount).nodes(lb.getNodes())
               .timeout(lb.getTimeout()).algorithm(lb.getAlgorithm()).halfClosed(lb.isHalfClosed())
               .sessionPersistenceType(lb.getSessionPersistenceType()).connectionLogging(lb.isConnectionLogging())
               .connectionThrottle(lb.getConnectionThrottle()).healthMonitor(lb.getHealthMonitor());

         if (lb.cluster.size() == 1)
            builder.clusterName(Iterables.get(lb.cluster.values(), 0));
         if (lb.created.size() == 1)
            builder.created(Iterables.get(lb.created.values(), 0));
         if (lb.updated.size() == 1)
            builder.updated(Iterables.get(lb.updated.values(), 0));
         if (lb.contentCaching.size() == 1)
            builder.contentCaching(Iterables.get(lb.contentCaching.values(), 0));
         if (lb.sslTermination != null)
            builder.sslTermination(lb.sslTermination);
         if (lb.sourceAddresses != null)
            builder.sourceAddresses(lb.sourceAddresses);
         if (lb.accessList == null)
            builder.accessRules(ImmutableSet. of());
         else
            builder.accessRules(lb.accessList);
         if (lb.virtualIps == null)
            builder.virtualIPs(ImmutableSet. of());
         else
            builder.virtualIPs(lb.virtualIps);
         if (lb.metadata == null)
            builder.metadata(new Metadata());
         else
            builder.metadata(ParseMetadata.transformCLBMetadataToMetadata(lb.metadata));
         
         int indexOfLB = endpoint.toString().lastIndexOf(LOAD_BALANCERS); 
         String path = endpoint.toString().substring(0, indexOfLB + LOAD_BALANCERS.length()); 
         builder.uri(URI.create(path + "/" + lb.id));

         return builder.build();
      }
      catch (NullPointerException e) {
         logger.warn(e, "nullpointer found parsing %s", lb);
         throw e;
      }
   }

}