/*
 * Copyright 2010-2011 Ning, Inc.
 *
 * Ning licenses this file to you 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 com.ning.billing.util.notificationq;

import java.util.UUID;

import org.joda.time.DateTime;

import com.ning.billing.util.entity.EntityBase;

public class DefaultNotification extends EntityBase implements Notification {
    private final long ordering;
    private final String owner;
    private final String createdOwner;
    private final String queueName;
    private final DateTime nextAvailableDate;
    private final PersistentQueueEntryLifecycleState lifecycleState;
    private final String notificationKey;
    private final DateTime effectiveDate;


    public DefaultNotification(final long ordering, final UUID id, final String createdOwner, final String owner, final String queueName, final DateTime nextAvailableDate,
                               final PersistentQueueEntryLifecycleState lifecycleState,
                               final String notificationKey, final DateTime effectiveDate) {
        super(id);
        this.ordering = ordering;
        this.owner = owner;
        this.createdOwner = createdOwner;
        this.queueName = queueName;
        this.nextAvailableDate = nextAvailableDate;
        this.lifecycleState = lifecycleState;
        this.notificationKey = notificationKey;
        this.effectiveDate = effectiveDate;
    }

    public DefaultNotification(final String queueName, final String createdOwner, final String notificationKey, final DateTime effectiveDate) {
        this(-1L, UUID.randomUUID(), createdOwner, null, queueName, null, PersistentQueueEntryLifecycleState.AVAILABLE, notificationKey, effectiveDate);
    }

    @Override
    public Long getOrdering() {
        return ordering;
    }

    @Override
    public String getOwner() {
        return owner;
    }

    @Override
    public DateTime getNextAvailableDate() {
        return nextAvailableDate;
    }

    @Override
    public PersistentQueueEntryLifecycleState getProcessingState() {
        return lifecycleState;
    }

    @Override
    public boolean isAvailableForProcessing(final DateTime now) {
        switch (lifecycleState) {
            case AVAILABLE:
                break;
            case IN_PROCESSING:
                // Somebody already got the event, not available yet
                if (nextAvailableDate.isAfter(now)) {
                    return false;
                }
                break;
            case PROCESSED:
                return false;
            default:
                throw new RuntimeException(String.format("Unkwnon IEvent processing state %s", lifecycleState));
        }
        return effectiveDate.isBefore(now);
    }

    @Override
    public String getNotificationKey() {
        return notificationKey;
    }

    @Override
    public DateTime getEffectiveDate() {
        return effectiveDate;
    }

    @Override
    public String getQueueName() {
        return queueName;
    }

    @Override
    public String getCreatedOwner() {
        return createdOwner;
    }
}
