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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2010-2014 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 compliance 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:
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 * exception as provided by Oracle in the GPL Version 2 section of the License
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 *
 * Modifications:
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package org.glassfish.jersey.message.internal;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;

import javax.ws.rs.Consumes;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;

import javax.inject.Singleton;

/**
 *
 * @author Paul Sandoz
 */
@Produces({"application/octet-stream", "*/*"})
@Consumes({"application/octet-stream", "*/*"})
@Singleton
public final class InputStreamProvider extends AbstractMessageReaderWriterProvider {

    @Override
    public boolean isReadable(Class type, Type genericType, Annotation[] annotations, MediaType mediaType) {
        return InputStream.class == type;
    }

    @Override
    public InputStream readFrom(
            Class type,
            Type genericType,
            Annotation annotations[],
            MediaType mediaType,
            MultivaluedMap httpHeaders,
            InputStream entityStream) throws IOException {
        return entityStream;
    }

    @Override
    public boolean isWriteable(Class type, Type genericType, Annotation annotations[], MediaType mediaType) {
        return InputStream.class.isAssignableFrom(type);
    }

    @Override
    public long getSize(InputStream t, Class type, Type genericType, Annotation[] annotations, MediaType mediaType) {
        if (t instanceof ByteArrayInputStream) {
            return ((ByteArrayInputStream) t).available();
        } else {
            return -1;
        }
    }

    @Override
    public void writeTo(
            InputStream t,
            Class type,
            Type genericType,
            Annotation annotations[],
            MediaType mediaType,
            MultivaluedMap httpHeaders,
            OutputStream entityStream) throws IOException {
        try {
            writeTo(t, entityStream);
        } finally {
            t.close();
        }
    }
}