/**
    *
    * Copyright (C) 2011 Cloud Conscious, LLC. <info@cloudconscious.com>
    *
    * ====================================================================
    * 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.jclouds.vcloud.domain.network;
  
  import static com.google.common.base.Preconditions.checkNotNull;
  
  import java.util.List;
  
  import javax.annotation.Nullable;
  
  import org.jclouds.vcloud.domain.network.nat.NatPolicy;
  import org.jclouds.vcloud.domain.network.nat.NatRule;
  import org.jclouds.vcloud.domain.network.nat.NatType;
  
  import com.google.common.collect.Iterables;
  import com.google.common.collect.Lists;
  
  /**
   * The NatService element defines the network address translation capabilities of a network.
   */
  public class NatService {
     private final boolean enabled;
     @Nullable
     private final NatType type;
     @Nullable
     private final NatPolicy policy;
     private final List<NatRule> natRules = Lists.newArrayList();
  
     public NatService(boolean enabled, @Nullable NatType type, @Nullable NatPolicy policy,
              Iterable<? extends NatRule> natRules) {
        this.enabled = enabled;
        this.type = type;
        this.policy = policy;
        Iterables.addAll(this.natRules, checkNotNull(natRules, "natRules"));
     }
  
     /**
      * @return Nat rules for the network
      * 
      * @since vcloud api 0.8
      */
     public List<? extends NatRule> getNatRules() {
        return natRules;
     }
  
     /**
      * @return true if the service is enabled
      * 
      * @since vcloud api 0.9
      */
     public boolean isEnabled() {
        return enabled;
     }
  
     /**
      * @return specifies how Network Address Translation is implemented by the NAT service
      * 
      * @since vcloud api 0.9
      */
     @Nullable
     public NatType getType() {
        return type;
     }
  
     /**
      * @return specifies how packets are handled by the NAT service.
      * 
      * @since vcloud api 0.9
      */
     @Nullable
     public NatPolicy getPolicy() {
        return policy;
     }
  
     @Override
     public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + (enabled ? 1231 : 1237);
        result = prime * result + ((natRules == null) ? 0 : natRules.hashCode());
        result = prime * result + ((policy == null) ? 0 : policy.hashCode());
        result = prime * result + ((type == null) ? 0 : type.hashCode());
        return result;
    }
 
    @Override
    public boolean equals(Object obj) {
       if (this == obj)
          return true;
       if (obj == null)
          return false;
       if (getClass() != obj.getClass())
          return false;
       NatService other = (NatService) obj;
       if (enabled != other.enabled)
          return false;
       if (natRules == null) {
          if (other.natRules != null)
             return false;
       } else if (!natRules.equals(other.natRules))
          return false;
       if (policy == null) {
          if (other.policy != null)
             return false;
       } else if (!policy.equals(other.policy))
          return false;
       if (type == null) {
          if (other.type != null)
             return false;
       } else if (!type.equals(other.type))
          return false;
       return true;
    }
 
    @Override
    public String toString() {
       return "[enabled=" + enabled + ", natRules=" + natRules + ", policy=" + policy + ", type=" + type + "]";
    }
 
 }