/*
 * ====================================================================
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 */

package org.apache.hc.core5.testing.nio;

import static org.hamcrest.MatcherAssert.assertThat;

import java.io.IOException;
import java.net.InetSocketAddress;
import java.util.concurrent.Future;

import org.apache.hc.core5.function.Supplier;
import org.apache.hc.core5.http.ContentType;
import org.apache.hc.core5.http.HeaderElements;
import org.apache.hc.core5.http.HttpException;
import org.apache.hc.core5.http.HttpHeaders;
import org.apache.hc.core5.http.HttpHost;
import org.apache.hc.core5.http.HttpRequest;
import org.apache.hc.core5.http.HttpResponse;
import org.apache.hc.core5.http.HttpStatus;
import org.apache.hc.core5.http.Message;
import org.apache.hc.core5.http.Method;
import org.apache.hc.core5.http.URIScheme;
import org.apache.hc.core5.http.impl.bootstrap.HttpAsyncRequester;
import org.apache.hc.core5.http.impl.bootstrap.HttpAsyncServer;
import org.apache.hc.core5.http.impl.bootstrap.StandardFilter;
import org.apache.hc.core5.http.impl.routing.RequestRouter;
import org.apache.hc.core5.http.nio.AsyncEntityProducer;
import org.apache.hc.core5.http.nio.AsyncFilterChain;
import org.apache.hc.core5.http.nio.AsyncPushProducer;
import org.apache.hc.core5.http.nio.AsyncServerExchangeHandler;
import org.apache.hc.core5.http.nio.entity.StringAsyncEntityConsumer;
import org.apache.hc.core5.http.nio.entity.StringAsyncEntityProducer;
import org.apache.hc.core5.http.nio.support.BasicRequestProducer;
import org.apache.hc.core5.http.nio.support.BasicResponseConsumer;
import org.apache.hc.core5.reactor.IOReactorConfig;
import org.apache.hc.core5.reactor.ListenerEndpoint;
import org.apache.hc.core5.testing.extension.nio.HttpAsyncRequesterResource;
import org.apache.hc.core5.testing.extension.nio.HttpAsyncServerResource;
import org.apache.hc.core5.util.Timeout;
import org.hamcrest.CoreMatchers;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.RegisterExtension;

abstract class Http1CoreTransportTest extends HttpCoreTransportTest {

    private static final Timeout TIMEOUT = Timeout.ofMinutes(1);

    @RegisterExtension
    private final HttpAsyncServerResource serverResource;
    @RegisterExtension
    private final HttpAsyncRequesterResource clientResource;

    public Http1CoreTransportTest(final URIScheme scheme) {
        super(scheme);
        this.serverResource = new HttpAsyncServerResource(bootstrap -> bootstrap
                .setIOReactorConfig(
                        IOReactorConfig.custom()
                                .setSoTimeout(TIMEOUT)
                                .build())
                .setRequestRouter(RequestRouter.<Supplier<AsyncServerExchangeHandler>>builder()
                        .addRoute(RequestRouter.LOCAL_AUTHORITY, "*", () -> new EchoHandler(2048))
                        .resolveAuthority(RequestRouter.LOCAL_AUTHORITY_RESOLVER)
                        .build())
                .addFilterBefore(StandardFilter.MAIN_HANDLER.name(), "no-keepalive", (request, entityDetails, context, responseTrigger, chain) ->
                        chain.proceed(request, entityDetails, context, new AsyncFilterChain.ResponseTrigger() {

                            @Override
                            public void sendInformation(
                                    final HttpResponse response) throws HttpException, IOException {
                                responseTrigger.sendInformation(response);
                            }

                            @Override
                            public void submitResponse(
                                    final HttpResponse response,
                                    final AsyncEntityProducer entityProducer) throws HttpException, IOException {
                                if (request.getPath().startsWith("/no-keep-alive")) {
                                    response.setHeader(HttpHeaders.CONNECTION, HeaderElements.CLOSE);
                                }
                                responseTrigger.submitResponse(response, entityProducer);
                            }

                            @Override
                            public void pushPromise(
                                    final HttpRequest promise,
                                    final AsyncPushProducer responseProducer) throws HttpException, IOException {
                                responseTrigger.pushPromise(promise, responseProducer);
                            }

                        }))
        );
        this.clientResource = new HttpAsyncRequesterResource(bootstrap -> bootstrap
                .setIOReactorConfig(IOReactorConfig.custom()
                        .setSoTimeout(TIMEOUT)
                        .build())
        );
    }

    @Override
    HttpAsyncServer serverStart() throws IOException {
        return serverResource.start();
    }

    @Override
    HttpAsyncRequester clientStart() {
        return clientResource.start();
    }

    @Test
    void testSequentialRequestsNonPersistentConnection() throws Exception {
        final HttpAsyncServer server = serverResource.start();
        final Future<ListenerEndpoint> future = server.listen(new InetSocketAddress(0), scheme);
        final ListenerEndpoint listener = future.get();
        final InetSocketAddress address = (InetSocketAddress) listener.getAddress();
        final HttpAsyncRequester requester = clientResource.start();

        final HttpHost target = new HttpHost(scheme.id, "localhost", address.getPort());
        final Future<Message<HttpResponse, String>> resultFuture1 = requester.execute(
                new BasicRequestProducer(Method.POST, target, "/no-keep-alive/stuff",
                        new StringAsyncEntityProducer("some stuff", ContentType.TEXT_PLAIN)),
                new BasicResponseConsumer<>(new StringAsyncEntityConsumer()), TIMEOUT, null);
        final Message<HttpResponse, String> message1 = resultFuture1.get(TIMEOUT.getDuration(), TIMEOUT.getTimeUnit());
        assertThat(message1, CoreMatchers.notNullValue());
        final HttpResponse response1 = message1.getHead();
        assertThat(response1.getCode(), CoreMatchers.equalTo(HttpStatus.SC_OK));
        final String body1 = message1.getBody();
        assertThat(body1, CoreMatchers.equalTo("some stuff"));

        final Future<Message<HttpResponse, String>> resultFuture2 = requester.execute(
                new BasicRequestProducer(Method.POST, target, "/no-keep-alive/other-stuff",
                        new StringAsyncEntityProducer("some other stuff", ContentType.TEXT_PLAIN)),
                new BasicResponseConsumer<>(new StringAsyncEntityConsumer()), TIMEOUT, null);
        final Message<HttpResponse, String> message2 = resultFuture2.get(TIMEOUT.getDuration(), TIMEOUT.getTimeUnit());
        assertThat(message2, CoreMatchers.notNullValue());
        final HttpResponse response2 = message2.getHead();
        assertThat(response2.getCode(), CoreMatchers.equalTo(HttpStatus.SC_OK));
        final String body2 = message2.getBody();
        assertThat(body2, CoreMatchers.equalTo("some other stuff"));

        final Future<Message<HttpResponse, String>> resultFuture3 = requester.execute(
                new BasicRequestProducer(Method.POST, target, "/no-keep-alive/more-stuff",
                        new StringAsyncEntityProducer("some more stuff", ContentType.TEXT_PLAIN)),
                new BasicResponseConsumer<>(new StringAsyncEntityConsumer()), TIMEOUT, null);
        final Message<HttpResponse, String> message3 = resultFuture3.get(TIMEOUT.getDuration(), TIMEOUT.getTimeUnit());
        assertThat(message3, CoreMatchers.notNullValue());
        final HttpResponse response3 = message3.getHead();
        assertThat(response3.getCode(), CoreMatchers.equalTo(HttpStatus.SC_OK));
        final String body3 = message3.getBody();
        assertThat(body3, CoreMatchers.equalTo("some more stuff"));
    }

}
