/*
 * 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.svcapi.junction;

import java.util.UUID;

import org.joda.time.DateTime;

import com.ning.billing.junction.api.Blockable;
import com.ning.billing.junction.api.BlockingState;


public class DefaultBlockingState implements BlockingState {

    public static final String CLEAR_STATE_NAME = "__KILLBILL__CLEAR__OVERDUE_STATE__";

    private static BlockingState clearState = null;

    private final UUID blockingId;
    private final Blockable.Type type;
    private final String stateName;
    private final String service;
    private final boolean blockChange;
    private final boolean blockEntitlement;
    private final boolean blockBilling;
    private final DateTime timestamp;

    public static BlockingState getClearState() {
        if (clearState == null) {
            clearState = new DefaultBlockingState(null, CLEAR_STATE_NAME, null, null, false, false, false);
        }
        return clearState;
    }

    public DefaultBlockingState(final UUID blockingId,
                                final String stateName,
                                final Blockable.Type type,
                                final String service,
                                final boolean blockChange,
                                final boolean blockEntitlement,
                                final boolean blockBilling
                               ) {
        this(blockingId,
             stateName,
             type,
             service,
             blockChange,
             blockEntitlement,
             blockBilling,
             null);
    }

    public DefaultBlockingState(final UUID blockingId,
                                final String stateName,
                                final Blockable.Type type,
                                final String service,
                                final boolean blockChange,
                                final boolean blockEntitlement,
                                final boolean blockBilling,
                                final DateTime timestamp
                               ) {
        super();
        this.blockingId = blockingId;
        this.stateName = stateName;
        this.service = service;
        this.blockChange = blockChange;
        this.blockEntitlement = blockEntitlement;
        this.blockBilling = blockBilling;
        this.type = type;
        this.timestamp = timestamp;
    }

    public UUID getBlockedId() {
        return blockingId;
    }

    /* (non-Javadoc)
    * @see com.ning.billing.junction.api.blocking.BlockingState#getStateName()
    */
    @Override
    public String getStateName() {
        return stateName;
    }

    @Override
    public Blockable.Type getType() {
        return type;
    }

    /* (non-Javadoc)
    * @see com.ning.billing.junction.api.blocking.BlockingState#getTimestamp()
    */
    @Override
    public DateTime getTimestamp() {
        return timestamp;
    }

    public String getService() {
        return service;
    }

    /* (non-Javadoc)
     * @see com.ning.billing.junction.api.blocking.BlockingState#isBlockChange()
     */
    @Override
    public boolean isBlockChange() {
        return blockChange;
    }

    /* (non-Javadoc)
     * @see com.ning.billing.junction.api.blocking.BlockingState#isBlockEntitlement()
     */
    @Override
    public boolean isBlockEntitlement() {
        return blockEntitlement;
    }

    /* (non-Javadoc)
     * @see com.ning.billing.junction.api.blocking.BlockingState#isBlockBilling()
     */
    @Override
    public boolean isBlockBilling() {
        return blockBilling;
    }

    /* (non-Javadoc)
     * @see com.ning.billing.junction.api.blocking.BlockingState#compareTo(com.ning.billing.junction.api.blocking.DefaultBlockingState)
     */
    @Override
    public int compareTo(final BlockingState arg0) {
        if (timestamp.compareTo(arg0.getTimestamp()) != 0) {
            return timestamp.compareTo(arg0.getTimestamp());
        } else {
            return hashCode() - arg0.hashCode();
        }
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime * result + (blockBilling ? 1231 : 1237);
        result = prime * result + (blockChange ? 1231 : 1237);
        result = prime * result + (blockEntitlement ? 1231 : 1237);
        result = prime * result + ((blockingId == null) ? 0 : blockingId.hashCode());
        result = prime * result + ((service == null) ? 0 : service.hashCode());
        result = prime * result + ((stateName == null) ? 0 : stateName.hashCode());
        result = prime * result + ((timestamp == null) ? 0 : timestamp.hashCode());
        result = prime * result + ((type == null) ? 0 : type.hashCode());
        return result;
    }

    @Override
    public boolean equals(final Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final DefaultBlockingState other = (DefaultBlockingState) obj;
        if (blockBilling != other.blockBilling) {
            return false;
        }
        if (blockChange != other.blockChange) {
            return false;
        }
        if (blockEntitlement != other.blockEntitlement) {
            return false;
        }
        if (blockingId == null) {
            if (other.blockingId != null) {
                return false;
            }
        } else if (!blockingId.equals(other.blockingId)) {
            return false;
        }
        if (service == null) {
            if (other.service != null) {
                return false;
            }
        } else if (!service.equals(other.service)) {
            return false;
        }
        if (stateName == null) {
            if (other.stateName != null) {
                return false;
            }
        } else if (!stateName.equals(other.stateName)) {
            return false;
        }
        if (timestamp == null) {
            if (other.timestamp != null) {
                return false;
            }
        } else if (!timestamp.equals(other.timestamp)) {
            return false;
        }
        if (type != other.type) {
            return false;
        }
        return true;
    }

    /* (non-Javadoc)
    * @see com.ning.billing.junction.api.blocking.BlockingState#getDescription()
    */
    @Override
    public String getDescription() {
        final String entitlement = onOff(isBlockEntitlement());
        final String billing = onOff(isBlockBilling());
        final String change = onOff(isBlockChange());

        return String.format("(Change: %s, Entitlement: %s, Billing: %s)", change, entitlement, billing);
    }

    private String onOff(final boolean val) {
        if (val) {
            return "Off";
        } else {
            return "On";
        }
    }

    @Override
    public String toString() {
        return "BlockingState [blockingId=" + blockingId + ", type=" + type + ", stateName=" + stateName + ", service="
                + service + ", blockChange=" + blockChange + ", blockEntitlement=" + blockEntitlement
                + ", blockBilling=" + blockBilling + ", timestamp=" + timestamp + "]";
    }


}
