/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code 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

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

import java.io.*;

import java.nio.file.Files;

import java.nio.file.Path;

import java.nio.file.Paths;

import jdk.internal.net.http.common.HttpHeadersImpl;

public class EchoHandler implements Http2Handler {

    static final Path CWD = Paths.get(".");

    public EchoHandler() {}

    @Override

    public void handle(Http2TestExchange t)

            throws IOException {

        try {

            System.err.println("EchoHandler received request to " + t.getRequestURI());

            InputStream is = t.getRequestBody();

            HttpHeadersImpl map = t.getRequestHeaders();

            HttpHeadersImpl map1 = t.getResponseHeaders();

            map1.addHeader("X-Hello", "world");

            map1.addHeader("X-Bye", "universe");

            String fixedrequest = map.firstValue("XFixed").orElse(null);

            File outfile = Files.createTempFile(CWD, "foo", "bar").toFile();

            //System.err.println ("QQQ = " + outfile.toString());

            FileOutputStream fos = new FileOutputStream(outfile);

            int count = (int) is.transferTo(fos);

            System.err.printf("EchoHandler read %d bytes\n", count);

            is.close();

            fos.close();

            InputStream is1 = new FileInputStream(outfile);

            OutputStream os = null;

            // return the number of bytes received (no echo)

            String summary = map.firstValue("XSummary").orElse(null);

            if (fixedrequest != null && summary == null) {

                t.sendResponseHeaders(200, count);

                os = t.getResponseBody();

                int count1 = (int)is1.transferTo(os);

                System.err.printf("EchoHandler wrote %d bytes\n", count1);

            } else {

                t.sendResponseHeaders(200, 0);

                os = t.getResponseBody();

                int count1 = (int)is1.transferTo(os);

                System.err.printf("EchoHandler wrote %d bytes\n", count1);

                if (summary != null) {

                    String s = Integer.toString(count);

                    os.write(s.getBytes());

                }

            }

            outfile.delete();

            os.close();

            is1.close();

        } catch (Throwable e) {

            e.printStackTrace();

            throw new IOException(e);

        }

    }

}