/**
    *
    * 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.cloudsigma.domain;
  
  import static com.google.common.base.Preconditions.checkNotNull;
  
  /**
   * 
   * @author Adrian Cole
   */
  public abstract class Device {
     public static abstract class Builder {
        protected String uuid;
        protected MediaType mediaType = MediaType.DISK;
  
        public Builder mediaType(MediaType mediaType) {
           this.mediaType = mediaType;
           return this;
        }
  
        public Builder uuid(String uuid) {
           this.uuid = uuid;
           return this;
        }
  
        public abstract Device build();
     }
  
     protected final String driveUuid;
     protected final MediaType mediaType;
  
     public Device(String driveUuid, MediaType mediaType) {
        this.driveUuid = checkNotNull(driveUuid, "driveUuid");
        this.mediaType = checkNotNull(mediaType, "mediaType");
     }
  
     /**
      * id generated based on the device bus, unit, and/or index numbers;
      */
     public abstract String getId();
  
     /**
      * 
      * @return Drive UUID to connect as specified device.
      */
     public String getDriveUuid() {
        return driveUuid;
     }
  
     /**
      * 
      * @return set to 'cdrom' to simulate a cdrom, set to 'disk' or leave unset to simulate a hard
      *         disk.
      */
     public MediaType getMediaType() {
        return mediaType;
     }
  
     @Override
     public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + ((driveUuid == null) ? 0 : driveUuid.hashCode());
        result = prime * result + ((mediaType == null) ? 0 : mediaType.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;
        Device other = (Device) obj;
        if (driveUuid == null) {
           if (other.driveUuid != null)
              return false;
        } else if (!driveUuid.equals(other.driveUuid))
           return false;
        if (mediaType != other.mediaType)
           return false;
       return true;
    }
 
    @Override
    public String toString() {
       return "[driveUuid=" + driveUuid + ", mediaType=" + mediaType + "]";
    }
 }