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 *
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 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
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 * obtain a copy of the License at
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
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package org.glassfish.jersey.message.internal;

import java.text.ParseException;
import java.util.Map;

import javax.ws.rs.core.MediaType;

/**
 * An acceptable media type.
 *
 * @author Paul Sandoz
 * @author Marek Potociar (marek.potociar at oracle.com)
 */
public class AcceptableMediaType extends MediaType implements QualityFactor {

    private final int q;

    public AcceptableMediaType(String p, String s) {
        super(p, s);
        q = DEFAULT_QUALITY_FACTOR;
    }

    public AcceptableMediaType(String p, String s, int q, Map parameters) {
        super(p, s, parameters);
        this.q = q;
    }

    @Override
    public int getQuality() {
        return q;
    }

    public static AcceptableMediaType valueOf(HttpHeaderReader reader) throws ParseException {
        // Skip any white space
        reader.hasNext();

        // Get the type
        String type = reader.nextToken();
        String subType = "*";
        // Some HTTP implements use "*" to mean "*/*"
        if (reader.hasNextSeparator('/', false)) {
            reader.next(false);
            // Get the subtype
            subType = reader.nextToken();
        }

        Map parameters = null;
        int quality = DEFAULT_QUALITY_FACTOR;
        if (reader.hasNext()) {
            parameters = HttpHeaderReader.readParameters(reader);
            if (parameters != null) {
                String v = parameters.get(QUALITY_FACTOR);
                if (v != null) {
                    quality = HttpHeaderReader.readQualityFactor(v);
                }
            }
        }

        return new AcceptableMediaType(type, subType, quality, parameters);
    }

    @Override
    public boolean equals(Object obj) {
        if (!(obj instanceof AcceptableMediaType)) {
            return false;
        }
        if (!super.equals(obj)) {
            return false;
        }
        final AcceptableMediaType other = (AcceptableMediaType) obj;
        if (this.q != other.q) {
            return false;
        }
        return true;
    }

    @Override
    public int hashCode() {
        int hash = 3;
        hash = 47 * hash + this.q;
        return hash;
    }
}