/*

 * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.

 * 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

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 */

import java.io.IOException;

import java.io.InputStream;

import java.net.InetAddress;

import java.net.InetSocketAddress;

import java.util.concurrent.Executor;

import java.util.concurrent.ExecutorService;

import java.util.concurrent.Executors;

import com.sun.net.httpserver.HttpExchange;

import com.sun.net.httpserver.HttpHandler;

import com.sun.net.httpserver.HttpServer;

import com.sun.net.httpserver.HttpsConfigurator;

import com.sun.net.httpserver.HttpsServer;

import java.net.http.HttpClient;

import javax.net.ssl.SSLContext;

import jdk.testlibrary.SimpleSSLContext;

import org.testng.annotations.AfterTest;

import org.testng.annotations.BeforeTest;

import org.testng.annotations.DataProvider;

public abstract class AbstractNoBody {

    SSLContext sslContext;

    HttpServer httpTestServer;         // HTTP/1.1    [ 4 servers ]

    HttpsServer httpsTestServer;       // HTTPS/1.1

    Http2TestServer http2TestServer;   // HTTP/2 ( h2c )

    Http2TestServer https2TestServer;  // HTTP/2 ( h2  )

    String httpURI_fixed;

    String httpURI_chunk;

    String httpsURI_fixed;

    String httpsURI_chunk;

    String http2URI_fixed;

    String http2URI_chunk;

    String https2URI_fixed;

    String https2URI_chunk;

    static final String SIMPLE_STRING = "Hello world. Goodbye world";

    static final int ITERATION_COUNT = 3;

    // a shared executor helps reduce the amount of threads created by the test

    static final Executor executor = Executors.newFixedThreadPool(ITERATION_COUNT * 2);

    static final ExecutorService serverExecutor = Executors.newFixedThreadPool(ITERATION_COUNT * 4);

    @DataProvider(name = "variants")

    public Object[][] variants() {

        return new Object[][]{

                { httpURI_fixed,    false },

                { httpURI_chunk,    false },

                { httpsURI_fixed,   false },

                { httpsURI_chunk,   false },

                { http2URI_fixed,   false },

                { http2URI_chunk,   false },

                { https2URI_fixed,  false,},

                { https2URI_chunk,  false },

                { httpURI_fixed,    true },

                { httpURI_chunk,    true },

                { httpsURI_fixed,   true },

                { httpsURI_chunk,   true },

                { http2URI_fixed,   true },

                { http2URI_chunk,   true },

                { https2URI_fixed,  true,},

                { https2URI_chunk,  true },

        };

    }

    HttpClient newHttpClient() {

        return HttpClient.newBuilder()

                .executor(executor)

                .sslContext(sslContext)

                .build();

    }

    static String serverAuthority(HttpServer server) {

        return InetAddress.getLoopbackAddress().getHostName() + ":"

                + server.getAddress().getPort();

    }

    @BeforeTest

    public void setup() throws Exception {

        printStamp(START, "setup");

        sslContext = new SimpleSSLContext().get();

        if (sslContext == null)

            throw new AssertionError("Unexpected null sslContext");

        // HTTP/1.1

        HttpHandler h1_fixedLengthNoBodyHandler = new HTTP1_FixedLengthNoBodyHandler();

        HttpHandler h1_chunkNoBodyHandler = new HTTP1_ChunkedNoBodyHandler();

        InetSocketAddress sa = new InetSocketAddress(InetAddress.getLoopbackAddress(), 0);

        httpTestServer = HttpServer.create(sa, 0);

        httpTestServer.setExecutor(serverExecutor);

        httpTestServer.createContext("/http1/noBodyFixed", h1_fixedLengthNoBodyHandler);

        httpTestServer.createContext("/http1/noBodyChunk", h1_chunkNoBodyHandler);

        httpURI_fixed = "http://" + serverAuthority(httpTestServer) + "/http1/noBodyFixed";

        httpURI_chunk = "http://" + serverAuthority(httpTestServer) + "/http1/noBodyChunk";

        httpsTestServer = HttpsServer.create(sa, 0);

        httpsTestServer.setExecutor(serverExecutor);

        httpsTestServer.setHttpsConfigurator(new HttpsConfigurator(sslContext));

        httpsTestServer.createContext("/https1/noBodyFixed", h1_fixedLengthNoBodyHandler);

        httpsTestServer.createContext("/https1/noBodyChunk", h1_chunkNoBodyHandler);

        httpsURI_fixed = "https://" + serverAuthority(httpsTestServer) + "/https1/noBodyFixed";

        httpsURI_chunk = "https://" + serverAuthority(httpsTestServer) + "/https1/noBodyChunk";

        // HTTP/2

        Http2Handler h2_fixedLengthNoBodyHandler = new HTTP2_FixedLengthNoBodyHandler();

        Http2Handler h2_chunkedNoBodyHandler = new HTTP2_ChunkedNoBodyHandler();

        http2TestServer = new Http2TestServer("localhost", false, 0, serverExecutor, null);

        http2TestServer.addHandler(h2_fixedLengthNoBodyHandler, "/http2/noBodyFixed");

        http2TestServer.addHandler(h2_chunkedNoBodyHandler, "/http2/noBodyChunk");

        http2URI_fixed = "http://" + http2TestServer.serverAuthority() + "/http2/noBodyFixed";

        http2URI_chunk = "http://" + http2TestServer.serverAuthority() + "/http2/noBodyChunk";

        https2TestServer = new Http2TestServer("localhost", true, 0, serverExecutor, sslContext);

        https2TestServer.addHandler(h2_fixedLengthNoBodyHandler, "/https2/noBodyFixed");

        https2TestServer.addHandler(h2_chunkedNoBodyHandler, "/https2/noBodyChunk");

        https2URI_fixed = "https://" + https2TestServer.serverAuthority() + "/https2/noBodyFixed";

        https2URI_chunk = "https://" + https2TestServer.serverAuthority() + "/https2/noBodyChunk";

        httpTestServer.start();

        httpsTestServer.start();

        http2TestServer.start();

        https2TestServer.start();

        printStamp(END,"setup");

    }

    @AfterTest

    public void teardown() throws Exception {

        printStamp(START, "teardown");

        httpTestServer.stop(0);

        httpsTestServer.stop(0);

        http2TestServer.stop();

        https2TestServer.stop();

        printStamp(END, "teardown");

    }

    static final long start = System.nanoTime();

    static final String START = "start";

    static final String END   = "end  ";

    static long elapsed() { return (System.nanoTime() - start)/1000_000;}

    void printStamp(String what, String fmt, Object... args) {

        long elapsed = elapsed();

        long sec = elapsed/1000;

        long ms  = elapsed % 1000;

        String time = sec > 0 ? sec + "sec " : "";

        time = time + ms + "ms";

        System.out.printf("%s: %s \t [%s]\t %s%n",

                getClass().getSimpleName(), what, time, String.format(fmt,args));

    }

    static class HTTP1_FixedLengthNoBodyHandler implements HttpHandler {

        @Override

        public void handle(HttpExchange t) throws IOException {

            //out.println("NoBodyHandler received request to " + t.getRequestURI());

            try (InputStream is = t.getRequestBody()) {

                is.readAllBytes();

            }

            t.sendResponseHeaders(200, -1); // no body

        }

    }

    static class HTTP1_ChunkedNoBodyHandler implements HttpHandler {

        @Override

        public void handle(HttpExchange t) throws IOException {

            //out.println("NoBodyHandler received request to " + t.getRequestURI());

            try (InputStream is = t.getRequestBody()) {

                is.readAllBytes();

            }

            t.sendResponseHeaders(200, 0); // chunked

            t.getResponseBody().close();  // write nothing

        }

    }

    static class HTTP2_FixedLengthNoBodyHandler implements Http2Handler {

        @Override

        public void handle(Http2TestExchange t) throws IOException {

            //out.println("NoBodyHandler received request to " + t.getRequestURI());

            try (InputStream is = t.getRequestBody()) {

                is.readAllBytes();

            }

            t.sendResponseHeaders(200, 0);

        }

    }

    static class HTTP2_ChunkedNoBodyHandler implements Http2Handler {

        @Override

        public void handle(Http2TestExchange t) throws IOException {

            //out.println("NoBodyHandler received request to " + t.getRequestURI());

            try (InputStream is = t.getRequestBody()) {

                is.readAllBytes();

            }

            t.sendResponseHeaders(200, -1);

            t.getResponseBody().close();  // write nothing

        }

    }

}