/**
 *
 * Copyright the original author or authors
 *
 * 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.jivesoftware.smackx.pubsub;

import java.util.Calendar;

/**
 * Defines the possible field options for a subscribe options form as defined 
 * by <a href="http://xmpp.org/extensions/xep-0060.html#registrar-formtypes-subscribe">Section 16.4.2</a>.
 * 
 * @author Robin Collier
 */
public enum SubscribeOptionFields
{
    /**
     * Whether an entity wants to receive or disable notifications.
     * 
     * <p><b>Value: boolean</b></p>
     */
    deliver,

    /**
     * Whether an entity wants to receive digests (aggregations) of 
     * notifications or all notifications individually.
     * 
     * <p><b>Value: boolean</b></p>
     */
    digest,

    /**
     * The minimum number of seconds between sending any two notifications digests.
     * 
     * <p><b>Value: int</b></p>
     */
    digest_frequency,

    /**
     * Expire.
     * <p><b>Value: {@link Calendar}</b></p>
     */
    expire,

    /**
     * Whether an entity wants to receive an XMPP message body in addition to 
     * the payload format.
     *
     * <p><b>Value: boolean</b></p>
     */
    include_body,

    /**
     * The presence states for which an entity wants to receive notifications.
     *
     * <p><b>Value: {@link PresenceState}</b></p>
     */
    show_values,

    /**
     * Subscription type.
     * 
     * <p><b>Value: </b></p>
     */
    subscription_type,

    /**
     * Subscription depth.
     *
     * <p><b>Value: </b></p>
     */
    subscription_depth;

    public String getFieldName()
    {
        if (this == show_values)
            return "pubsub#" + toString().replace('_', '-');
        return "pubsub#" + toString();
    }

    static public SubscribeOptionFields valueOfFromElement(String elementName)
    {
        String portion = elementName.substring(elementName.lastIndexOf('#' + 1));

        if ("show-values".equals(portion))
            return show_values;
        else
            return valueOf(portion);
    }
}
