/*
    * Copyright (C) 2013 4th Line GmbH, Switzerland
    *
    * The contents of this file are subject to the terms of either the GNU
    * Lesser General Public License Version 2 or later ("LGPL") or the
    * Common Development and Distribution License Version 1 or later
    * ("CDDL") (collectively, the "License"). You may not use this file
    * except in compliance with the License. See LICENSE.txt for more
    * information.
   *
   * 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.
   */
  
  package org.fourthline.cling.model.meta;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import org.fourthline.cling.model.Constants;
  import org.fourthline.cling.model.Validatable;
  import org.fourthline.cling.model.ValidationError;
  import org.fourthline.cling.model.types.UDN;
  
  /**
   * Unique device name, received and offered during discovery with SSDP.
   *
   * @author Christian Bauer
   */
  public class DeviceIdentity implements Validatable {
  
      final private UDN udn;
      final private Integer maxAgeSeconds;
  
      public DeviceIdentity(UDN udn, DeviceIdentity template) {
          this.udn = udn;
          this.maxAgeSeconds = template.getMaxAgeSeconds();
      }
  
      public DeviceIdentity(UDN udn) {
          this.udn = udn;
          this.maxAgeSeconds = Constants.MIN_ADVERTISEMENT_AGE_SECONDS;
      }
  
      public DeviceIdentity(UDN udn, Integer maxAgeSeconds) {
          this.udn = udn;
          this.maxAgeSeconds = maxAgeSeconds;
      }
  
      public UDN getUdn() {
          return udn;
      }
  
      public Integer getMaxAgeSeconds() {
          return maxAgeSeconds;
      }
  
      @Override
      public boolean equals(Object o) {
          if (this == o) return true;
          if (o == null || getClass() != o.getClass()) return false;
  
          DeviceIdentity that = (DeviceIdentity) o;
  
          if (!udn.equals(that.udn)) return false;
  
          return true;
      }
  
      @Override
      public int hashCode() {
          return udn.hashCode();
      }
  
      @Override
      public String toString() {
          return "(" + getClass().getSimpleName() + ") UDN: " + getUdn();
      }
  
      @Override
      public List<ValidationError> validate() {
      	List<ValidationError> errors = new ArrayList<>();
  
      	if (getUdn() == null) {
      		errors.add(new ValidationError(
      				getClass(),
      				"major",
      				"Device has no UDN"
      				));
      	}
  
      	return errors;
      }
  }