/*
 * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */

package org.opendaylight.controller.topologymanager;

import java.io.Serializable;

import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;

import org.opendaylight.controller.configuration.ConfigurationObject;
import org.opendaylight.controller.sal.core.NodeConnector;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * The Interface provides methods to manipulate user configured link.
 */
@XmlRootElement
@XmlAccessorType(XmlAccessType.NONE)
public class TopologyUserLinkConfig extends ConfigurationObject implements Serializable {
    private static final long serialVersionUID = 1L;
    private static final Logger logger = LoggerFactory.getLogger(TopologyUserLinkConfig.class);

    public enum STATUS {
        SUCCESS("Success"), LINKDOWN("Link Down"), INCORRECT(
                "Incorrect Connection");
        private STATUS(String name) {
            this.name = name;
        }

        private String name;

        @Override
        public String toString() {
            return name;
        }

        public static STATUS fromString(String str) {
            if (str == null) {
                return LINKDOWN;
            }
            if (str.equals(SUCCESS.toString())) {
                return SUCCESS;
            }
            if (str.equals(LINKDOWN.toString())) {
                return LINKDOWN;
            }
            if (str.equals(INCORRECT.toString())) {
                return INCORRECT;
            }
            return LINKDOWN;
        }
    }

    @XmlElement
    private String status;
    @XmlElement
    private String name;
    @XmlElement
    private String srcNodeConnector;
    @XmlElement
    private String dstNodeConnector;

    public TopologyUserLinkConfig() {
        super();
        status = STATUS.LINKDOWN.toString();
    }

    public TopologyUserLinkConfig(String name, String srcNodeConnector, String dstNodeConnector) {
        super();
        this.name = name;
        this.srcNodeConnector = srcNodeConnector;
        this.dstNodeConnector = dstNodeConnector;
    }


    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }


    public STATUS getStatus() {
        return STATUS.fromString(status);
    }

    public void setStatus(STATUS s) {
        this.status = s.toString();
    }

    public String getSrcNodeConnector() {
        return srcNodeConnector;
    }

    public void setSrcNodeConnector(String srcNodeConnector) {
        this.srcNodeConnector = srcNodeConnector;
    }

    public String getDstNodeConnector() {
        return dstNodeConnector;
    }

    public void setDstNodeConnector(String dstNodeConnector) {
        this.dstNodeConnector = dstNodeConnector;
    }

    public boolean isValidNodeConnector(String nodeConnectorStr) {
        return (NodeConnector.fromString(nodeConnectorStr) != null);
    }

    public boolean isValid() {
        if (!isValidResourceName(name)) {
            logger.debug("Invalid name in user link: {}", name);
            return false;
        }

        if (!isValidNodeConnector(srcNodeConnector) ||
                !isValidNodeConnector(dstNodeConnector)) {
            logger.debug("Invalid NodeConnector in user link: {}", name);
            return false;
        }

        return true;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = 1;
        result = prime
                * result
                + ((dstNodeConnector == null) ? 0 : dstNodeConnector.hashCode());
        result = prime * result + ((name == null) ? 0 : name.hashCode());
        result = prime
                * result
                + ((srcNodeConnector == null) ? 0 : srcNodeConnector.hashCode());
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        TopologyUserLinkConfig other = (TopologyUserLinkConfig) obj;
        if (dstNodeConnector == null) {
            if (other.dstNodeConnector != null) {
                return false;
            }
        } else if (!dstNodeConnector.equals(other.dstNodeConnector)) {
            return false;
        }
        if (srcNodeConnector == null) {
            if (other.srcNodeConnector != null) {
                return false;
            }
        } else if (!srcNodeConnector.equals(other.srcNodeConnector)) {
            return false;
        }
        return true;
    }

    @Override
    public String toString() {
        return "TopologyUserLinkConfig [status=" + status + ", name=" + name
                + ", srcNodeConnector=" + srcNodeConnector
                + ", dstNodeConnector=" + dstNodeConnector + "]";
    }
}