/*
 * Copyright (c) 2010, 2018 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

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

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

    @Override
    public InputStream readFrom(
            Class<InputStream> type,
            Type genericType,
            Annotation annotations[],
            MediaType mediaType,
            MultivaluedMap<String, String> httpHeaders,
            InputStream entityStream) throws IOException {
        return ReaderInterceptorExecutor.closeableInputStream(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<String, Object> httpHeaders,
            OutputStream entityStream) throws IOException {
        try {
            writeTo(t, entityStream);
        } finally {
            t.close();
        }
    }
}