/**
 * Copyright (C) 2012-2017 52°North Initiative for Geospatial Open Source
 * Software GmbH
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation.
 *
 * If the program is linked with libraries which are licensed under one of
 * the following licenses, the combination of the program with the linked
 * library is not considered a "derivative work" of the program:
 *
 *     - Apache License, version 2.0
 *     - Apache Software License, version 1.0
 *     - GNU Lesser General Public License, version 3
 *     - Mozilla Public License, versions 1.0, 1.1 and 2.0
 *     - Common Development and Distribution License (CDDL), version 1.0
 *
 * Therefore the distribution of the program linked with libraries licensed
 * under the aforementioned licenses, is permitted by the copyright holders
 * if the distribution is compliant with both the GNU General Public
 * License version 2 and the aforementioned licenses.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
 * Public License for more details.
 */
package org.n52.sos.decode;

import org.n52.sos.util.ClassHelper;

import com.google.common.base.Objects;

/**
 * @author Christian Autermann <c.autermann@52north.org>
 * 
 * @since 4.0.0
 */
public abstract class NamespaceDecoderKey implements DecoderKey {
    private final String namespace;

    private final Class<?> type;

    public NamespaceDecoderKey(String namespace, Class<?> type) {
        this.namespace = namespace;
        this.type = type;
    }

    public String getNamespace() {
        return namespace;
    }

    public Class<?> getType() {
        return type;
    }

    @Override
    public String toString() {
        return String.format("%s[namespace=%s, type=%s]", getClass().getSimpleName(), getNamespace(), getType()
                .getSimpleName());
    }

    @Override
    public boolean equals(Object obj) {
        if (obj != null && getClass() == obj.getClass()) {
            final NamespaceDecoderKey o = (NamespaceDecoderKey) obj;
            return Objects.equal(getType(), o.getType()) && Objects.equal(getNamespace(), o.getNamespace());
        }
        return false;
    }

    @Override
    public int hashCode() {
        return Objects.hashCode(3, 79, getNamespace(), getType());
    }

    protected int getSimilarity(DecoderKey key, Class<?> type) {
        if (key != null && key.getClass() == getClass()) {
            NamespaceDecoderKey xmlKey = (NamespaceDecoderKey) key;
            if (Objects.equal(getNamespace(), xmlKey.getNamespace())) {
                return ClassHelper.getSimiliarity(getType() != null ? getType() : type,
                        xmlKey.getType() != null ? xmlKey.getType() : type);
            } else {
                return -1;
            }
        } else {
            return -1;
        }
    }
}