/**
 *    Copyright 2011, Big Switch Networks, Inc.
 *    Originally created by David Erickson, Stanford University
 *
 *    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 net.onrc.onos.core.packet;

public enum DHCPPacketType {
    // From RFC 1533
    DHCPDISCOVER(1),
    DHCPOFFER(2),
    DHCPREQUEST(3),
    DHCPDECLINE(4),
    DHCPACK(5),
    DHCPNAK(6),
    DHCPRELEASE(7),

    // From RFC2132
    DHCPINFORM(8),

    // From RFC3203
    DHCPFORCERENEW(9),

    // From RFC4388
    DHCPLEASEQUERY(10),
    DHCPLEASEUNASSIGNED(11),
    DHCPLEASEUNKNOWN(12),
    DHCPLEASEACTIVE(13);

    protected int value;

    private DHCPPacketType(int value) {
        this.value = value;
    }

    public int getValue() {
        return value;
    }

    public String toString() {
        switch (value) {
            case 1:
                return "DHCPDISCOVER";
            case 2:
                return "DHCPOFFER";
            case 3:
                return "DHCPREQUEST";
            case 4:
                return "DHCPDECLINE";
            case 5:
                return "DHCPACK";
            case 6:
                return "DHCPNAK";
            case 7:
                return "DHCPRELEASE";
            case 8:
                return "DHCPINFORM";
            case 9:
                return "DHCPFORCERENEW";
            case 10:
                return "DHCPLEASEQUERY";
            case 11:
                return "DHCPLEASEUNASSIGNED";
            case 12:
                return "DHCPLEASEUNKNOWN";
            case 13:
                return "DHCPLEASEACTIVE";
            default:
                return "DHCP_UnknownType(" + value + ")";
        }
    }

    public static DHCPPacketType getType(int value) {
        switch (value) {
            case 1:
                return DHCPDISCOVER;
            case 2:
                return DHCPOFFER;
            case 3:
                return DHCPREQUEST;
            case 4:
                return DHCPDECLINE;
            case 5:
                return DHCPACK;
            case 6:
                return DHCPNAK;
            case 7:
                return DHCPRELEASE;
            case 8:
                return DHCPINFORM;
            case 9:
                return DHCPFORCERENEW;
            case 10:
                return DHCPLEASEQUERY;
            case 11:
                return DHCPLEASEUNASSIGNED;
            case 12:
                return DHCPLEASEUNKNOWN;
            case 13:
                return DHCPLEASEACTIVE;
            default:
                return null;
        }
    }
}