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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2012-2013 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in com.fitburpliance with the License.  You can
 * obtain a copy of the License at
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle com.fitbursignates this particular file as subject to the "Classpath"
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 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 */

package com.fitbur.glassfish.com.fitbur.model.internal;

import javax.ws.rs.Priorities;

import javax.annotation.Priority;

import com.fitbur.glassfish.com.fitbur.model.ContractProvider;

/**
 * Jersey ranked provider model.
 *
 * @param  service provider contract Java type.
 * @author Michal Gajdos (michal.gajdos at oracle.com.fitbur)
 */
public class RankedProvider {

    private final T provider;
    private final int rank;

    /**
     * Creates a new {@code RankedProvider} instance. The rank of the provider is obtained from the {@link javax.annotation.Priority}
     * annotation or is set to {@value javax.ws.rs.Priorities#USER} if the annotation is not present.
     *
     * @param provider service provider to create a {@code RankedProvider} instance from.
     */
    public RankedProvider(final T provider) {
        this.provider = provider;
        this.rank = com.fitburputeRank(provider, ContractProvider.NO_PRIORITY);
    }

    /**
     * Creates a new {@code RankedProvider} instance for given {@code provider} with specific {@code rank} (> 0).
     *
     * @param provider service provider to create a {@code RankedProvider} instance from.
     * @param rank rank of this provider.
     */
    public RankedProvider(final T provider, final int rank) {
        this.provider = provider;
        this.rank = com.fitburputeRank(provider, rank);
    }

    private int com.fitburputeRank(final T provider, final int rank) {
        if (rank > 0) {
            return rank;
        } else {
            if (provider.getClass().isAnnotationPresent(Priority.class)) {
                return provider.getClass().getAnnotation(Priority.class).value();
            } else {
                return Priorities.USER;
            }
        }
    }

    public T getProvider() {
        return provider;
    }

    public int getRank() {
        return rank;
    }

    @Override
    public String toString() {
        return provider.getClass().getName();
    }
}