/*
 * 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.analytics.model;

import java.util.UUID;

import org.joda.time.DateTime;

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

/**
 * Describe a state change between two BusinessSubscription
 */
public class BusinessSubscriptionTransitionModelDao extends EntityBase {

    private final long totalOrdering;
    private final UUID bundleId;
    private final String externalKey;
    private final UUID accountId;
    private final String accountKey;
    private final UUID subscriptionId;
    private final DateTime requestedTimestamp;
    private final BusinessSubscriptionEvent event;
    private final BusinessSubscription previousSubscription;
    private final BusinessSubscription nextSubscription;

    public BusinessSubscriptionTransitionModelDao(final Long totalOrdering, final UUID bundleId, final String externalKey,
                                                  final UUID accountId, final String accountKey, final UUID subscriptionId,
                                                  final DateTime requestedTimestamp, final BusinessSubscriptionEvent event,
                                                  final BusinessSubscription previousSubscription, final BusinessSubscription nextSubscription) {
        if (totalOrdering == null) {
            throw new IllegalArgumentException("A transition must have a total ordering");
        }
        if (bundleId == null) {
            throw new IllegalArgumentException("A transition must have a bundle id");
        }
        if (externalKey == null) {
            throw new IllegalArgumentException("A transition must have an external key");
        }
        if (accountId == null) {
            throw new IllegalArgumentException("A transition must have an account key");
        }
        if (subscriptionId == null) {
            throw new IllegalArgumentException("A transition must have a subscription id");
        }
        if (accountKey == null) {
            throw new IllegalArgumentException("A transition must have an account key");
        }
        if (requestedTimestamp == null) {
            throw new IllegalArgumentException("A transition must have a requested timestamp");
        }
        if (event == null) {
            throw new IllegalArgumentException("No event specified");
        }

        this.totalOrdering = totalOrdering;
        this.bundleId = bundleId;
        this.externalKey = externalKey;
        this.accountId = accountId;
        this.accountKey = accountKey;
        this.subscriptionId = subscriptionId;
        this.requestedTimestamp = requestedTimestamp;
        this.event = event;
        this.previousSubscription = previousSubscription;
        this.nextSubscription = nextSubscription;
    }

    public long getTotalOrdering() {
        return totalOrdering;
    }

    public BusinessSubscriptionEvent getEvent() {
        return event;
    }

    public UUID getBundleId() {
        return bundleId;
    }

    public String getExternalKey() {
        return externalKey;
    }

    public UUID getAccountId() {
        return accountId;
    }

    public String getAccountKey() {
        return accountKey;
    }

    public BusinessSubscription getNextSubscription() {
        return nextSubscription;
    }

    public BusinessSubscription getPreviousSubscription() {
        return previousSubscription;
    }

    public UUID getSubscriptionId() {
        return subscriptionId;
    }

    public DateTime getRequestedTimestamp() {
        return requestedTimestamp;
    }

    @Override
    public String toString() {
        final StringBuilder sb = new StringBuilder();
        sb.append("BusinessSubscriptionTransitionModelDao");
        sb.append("{accountId='").append(accountId).append('\'');
        sb.append(", accountKey=").append(accountKey);
        sb.append(", totalOrdering=").append(totalOrdering);
        sb.append(", bundleId='").append(bundleId).append('\'');
        sb.append(", externalKey='").append(externalKey).append('\'');
        sb.append(", subscriptionId='").append(subscriptionId).append('\'');
        sb.append(", requestedTimestamp=").append(requestedTimestamp);
        sb.append(", event=").append(event);
        sb.append(", previousSubscription=").append(previousSubscription);
        sb.append(", nextSubscription=").append(nextSubscription);
        sb.append('}');
        return sb.toString();
    }

    @Override
    public boolean equals(final Object o) {
        if (this == o) {
            return true;
        }
        if (o == null || getClass() != o.getClass()) {
            return false;
        }

        final BusinessSubscriptionTransitionModelDao that = (BusinessSubscriptionTransitionModelDao) o;

        return totalOrdering == that.totalOrdering && isDuplicateOf(that);
    }

    @Override
    public int hashCode() {
        int result = (int) (totalOrdering ^ (totalOrdering >>> 32));
        result = 31 * result + (bundleId != null ? bundleId.hashCode() : 0);
        result = 31 * result + (externalKey != null ? externalKey.hashCode() : 0);
        result = 31 * result + (accountId != null ? accountId.hashCode() : 0);
        result = 31 * result + (accountKey != null ? accountKey.hashCode() : 0);
        result = 31 * result + (subscriptionId != null ? subscriptionId.hashCode() : 0);
        result = 31 * result + (requestedTimestamp != null ? requestedTimestamp.hashCode() : 0);
        result = 31 * result + (event != null ? event.hashCode() : 0);
        result = 31 * result + (previousSubscription != null ? previousSubscription.hashCode() : 0);
        result = 31 * result + (nextSubscription != null ? nextSubscription.hashCode() : 0);
        return result;
    }

    public boolean isDuplicateOf(final BusinessSubscriptionTransitionModelDao that) {
        if (accountId != null ? !accountId.equals(that.accountId) : that.accountId != null) {
            return false;
        }
        if (accountKey != null ? !accountKey.equals(that.accountKey) : that.accountKey != null) {
            return false;
        }
        if (event != null ? !event.equals(that.event) : that.event != null) {
            return false;
        }
        if (bundleId != null ? !bundleId.equals(that.bundleId) : that.bundleId != null) {
            return false;
        }
        if (externalKey != null ? !externalKey.equals(that.externalKey) : that.externalKey != null) {
            return false;
        }
        if (nextSubscription != null ? !nextSubscription.equals(that.nextSubscription) : that.nextSubscription != null) {
            return false;
        }
        if (previousSubscription != null ? !previousSubscription.equals(that.previousSubscription) : that.previousSubscription != null) {
            return false;
        }
        if (subscriptionId != null ? !subscriptionId.equals(that.subscriptionId) : that.subscriptionId != null) {
            return false;
        }
        if (requestedTimestamp != null ? !requestedTimestamp.equals(that.requestedTimestamp) : that.requestedTimestamp != null) {
            return false;
        }

        return true;
    }
}
