/*
 * ====================================================================
 * 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.http.examples;

import java.io.IOException;
import java.io.OutputStream;
import java.nio.charset.StandardCharsets;
import java.util.concurrent.TimeUnit;

import org.apache.hc.core5.http.ClassicHttpRequest;
import org.apache.hc.core5.http.ClassicHttpResponse;
import org.apache.hc.core5.http.ContentType;
import org.apache.hc.core5.http.HttpConnection;
import org.apache.hc.core5.http.HttpEntity;
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.Methods;
import org.apache.hc.core5.http.impl.Http1StreamListener;
import org.apache.hc.core5.http.impl.bootstrap.HttpRequester;
import org.apache.hc.core5.http.impl.bootstrap.RequesterBootstrap;
import org.apache.hc.core5.http.io.SocketConfig;
import org.apache.hc.core5.http.io.entity.EntityUtils;
import org.apache.hc.core5.http.io.entity.HttpEntities;
import org.apache.hc.core5.http.message.BasicClassicHttpRequest;
import org.apache.hc.core5.http.message.BasicHeader;
import org.apache.hc.core5.http.message.RequestLine;
import org.apache.hc.core5.http.message.StatusLine;
import org.apache.hc.core5.http.protocol.HttpCoreContext;
import org.apache.hc.core5.io.IOCallback;
import org.apache.hc.core5.util.Timeout;

/**
 * Example of POST requests execution using classic I/O.
 */
public class ClassicPostExecutionExample {

    public static void main(final String[] args) throws Exception {
        final HttpRequester httpRequester = RequesterBootstrap.bootstrap()
                .setStreamListener(new Http1StreamListener() {

                    @Override
                    public void onRequestHead(final HttpConnection connection, final HttpRequest request) {
                        System.out.println(connection.getRemoteAddress() + " " + new RequestLine(request));

                    }

                    @Override
                    public void onResponseHead(final HttpConnection connection, final HttpResponse response) {
                        System.out.println(connection.getRemoteAddress() + " " + new StatusLine(response));
                    }

                    @Override
                    public void onExchangeComplete(final HttpConnection connection, final boolean keepAlive) {
                        if (keepAlive) {
                            System.out.println(connection.getRemoteAddress() + " exchange completed (connection kept alive)");
                        } else {
                            System.out.println(connection.getRemoteAddress() + " exchange completed (connection closed)");
                        }
                    }

                })
                .setSocketConfig(SocketConfig.custom()
                        .setSoTimeout(5, TimeUnit.SECONDS)
                        .build())
                .create();
        final HttpCoreContext coreContext = HttpCoreContext.create();
        final HttpHost target = new HttpHost("httpbin.org");

        final HttpEntity[] requestBodies = {
                HttpEntities.create(
                        "This is the first test request",
                        ContentType.TEXT_PLAIN.withCharset(StandardCharsets.UTF_8)),
                HttpEntities.create(
                        "This is the second test request".getBytes(StandardCharsets.UTF_8),
                        ContentType.APPLICATION_OCTET_STREAM),
                HttpEntities.create(new IOCallback<OutputStream>() {

                    @Override
                    public void execute(final OutputStream outStream) throws IOException {
                        outStream.write(("This is the third test request " +
                                "(streaming)").getBytes(StandardCharsets.UTF_8));
                    }

                }, ContentType.TEXT_PLAIN.withCharset(StandardCharsets.UTF_8)),
                HttpEntities.create(
                        "This is the fourth test request " +
                                "(streaming with trailers)",
                        ContentType.TEXT_PLAIN.withCharset(StandardCharsets.UTF_8),
                        new BasicHeader("trailer1","And goodbye"))
        };

        final String requestUri = "/post";
        for (int i = 0; i < requestBodies.length; i++) {
            final ClassicHttpRequest request = new BasicClassicHttpRequest(Methods.POST, target, requestUri);
            request.setEntity(requestBodies[i]);
            try (ClassicHttpResponse response = httpRequester.execute(target, request, Timeout.ofSeconds(5), coreContext)) {
                System.out.println(requestUri + "->" + response.getCode());
                System.out.println(EntityUtils.toString(response.getEntity()));
                System.out.println("==============");
            }
        }
    }

}
