/*************************************************************************
 * Copyright 2009-2014 Eucalyptus Systems, Inc.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 3 of the License.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see http://www.gnu.org/licenses/.
 *
 * Please contact Eucalyptus Systems, Inc., 6755 Hollister Ave., Goleta
 * CA 93117, USA or visit http://www.eucalyptus.com/licenses/ if you need
 * additional information or have any questions.
 ************************************************************************/
package com.eucalyptus.compute.common.internal.vpc;

import static com.eucalyptus.compute.common.CloudMetadata.NetworkAclMetadata;
import static com.eucalyptus.compute.common.internal.vpc.NetworkAclEntry.RuleAction;
import java.util.Collection;
import java.util.List;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.Index;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.OneToMany;
import javax.persistence.PersistenceContext;
import javax.persistence.Table;
import com.eucalyptus.entities.AbstractOwnedPersistent;
import com.eucalyptus.auth.principal.OwnerFullName;
import com.google.common.collect.Lists;

/**
 *
 */
@Entity
@PersistenceContext( name = "eucalyptus_cloud" )
@Table( name = "metadata_network_acls", indexes = {
    @Index( name = "metadata_network_acls_account_id_idx", columnList = "metadata_account_id" ),
    @Index( name = "metadata_network_acls_display_name_idx", columnList = "metadata_display_name" ),
} )
public class NetworkAcl extends AbstractOwnedPersistent implements NetworkAclMetadata {

  private static final long serialVersionUID = 1L;

  protected NetworkAcl( ) {
  }

  protected NetworkAcl( final OwnerFullName owner, final String displayName ) {
    super( owner, displayName );
  }

  public static NetworkAcl create( final OwnerFullName owner,
                                   final Vpc vpc,
                                   final String name,
                                   final boolean defaultForVpc ) {
    final NetworkAcl networkAcl = new NetworkAcl( owner, name );
    networkAcl.setVpc( vpc );
    networkAcl.setDefaultForVpc( defaultForVpc );
    networkAcl.setEntries( defaultForVpc ? Lists.newArrayList(
        NetworkAclEntry.createEntry( networkAcl, 100, -1, RuleAction.allow, true, "0.0.0.0/0" ),
        NetworkAclEntry.createEntry( networkAcl, 32767, -1, RuleAction.deny, true, "0.0.0.0/0" ),
        NetworkAclEntry.createEntry( networkAcl, 100, -1, RuleAction.allow, false, "0.0.0.0/0" ),
        NetworkAclEntry.createEntry( networkAcl, 32767, -1, RuleAction.deny, false, "0.0.0.0/0" )
    ) : Lists.newArrayList(
        NetworkAclEntry.createEntry( networkAcl, 32767, -1, RuleAction.deny, true, "0.0.0.0/0" ),
        NetworkAclEntry.createEntry( networkAcl, 32767, -1, RuleAction.deny, false, "0.0.0.0/0" )
    ) );
    networkAcl.subnets = Lists.newArrayList( );
    return networkAcl;
  }

  public static NetworkAcl exampleWithOwner( final OwnerFullName owner ) {
    return new NetworkAcl( owner, null );
  }

  public static NetworkAcl exampleWithName( final OwnerFullName owner, final String name ) {
    return new NetworkAcl( owner, name );
  }

  public static NetworkAcl exampleDefault() {
    final NetworkAcl networkAcl = new NetworkAcl( );
    networkAcl.setDefaultForVpc( true );
    return networkAcl;
  }

  @ManyToOne( optional = false )
  @JoinColumn( name = "metadata_vpc_id" )
  private Vpc vpc;

  @Column( name = "metadata_default" )
  private Boolean defaultForVpc;

  @OneToMany( cascade = CascadeType.ALL, orphanRemoval = true, mappedBy = "networkAcl" )
  private List<NetworkAclEntry> entries = Lists.newArrayList( );

  @OneToMany( cascade = CascadeType.REFRESH , orphanRemoval = true, mappedBy = "networkAcl" )
  private Collection<Subnet> subnets;

  @OneToMany( fetch = FetchType.LAZY, cascade = CascadeType.REMOVE, orphanRemoval = true, mappedBy = "networkAcl" )
  private Collection<NetworkAclTag> tags;

  public Vpc getVpc() {
    return vpc;
  }

  public void setVpc( final Vpc vpc ) {
    this.vpc = vpc;
  }

  public Boolean getDefaultForVpc() {
    return defaultForVpc;
  }

  public void setDefaultForVpc( final Boolean defaultForVpc ) {
    this.defaultForVpc = defaultForVpc;
  }

  public List<NetworkAclEntry> getEntries( ) {
    return entries;
  }

  public void setEntries( final List<NetworkAclEntry> entries ) {
    this.entries = entries;
  }

  public List<Subnet> getSubnets( ) {
    return Lists.newArrayList( subnets );
  }
}