/**
 * 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.
 */
package org.apache.camel.component.http4;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import org.apache.http.Header;
import org.apache.http.HttpException;
import org.apache.http.HttpRequest;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.bootstrap.HttpServer;
import org.apache.http.impl.bootstrap.ServerBootstrap;
import org.apache.http.protocol.HttpContext;
import org.apache.http.protocol.HttpRequestHandler;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

/**
 *
 */
public class HttpProducerTwoHeadersWithSameKeyTest extends BaseHttpTest {

    private HttpServer localServer;
    
    @Before
    @Override
    public void setUp() throws Exception {
        localServer = ServerBootstrap.bootstrap().
                setHttpProcessor(getBasicHttpProcessor()).
                setConnectionReuseStrategy(getConnectionReuseStrategy()).
                setResponseFactory(getHttpResponseFactory()).
                setExpectationVerifier(getHttpExpectationVerifier()).
                setSslContext(getSSLContext()).
                registerHandler("/myapp", new HttpRequestHandler() {
                    @Override
                    public void handle(HttpRequest request, HttpResponse response, HttpContext context) throws HttpException, IOException {
                        Header[] from = request.getHeaders("from");
                        assertEquals("me", from[0].getValue());
                        Header[] to = request.getHeaders("to");
                        assertEquals("[foo, bar]", to[0].getValue());

                        response.setHeader("bar", "yes");
                        response.addHeader("foo", "123");
                        response.addHeader("foo", "456");
                        response.setEntity(new StringEntity("OK", "ASCII"));
                        response.setStatusCode(HttpStatus.SC_OK);
                    }
                }).
                registerHandler("/myapp", new HttpRequestHandler() {
                    @Override
                    public void handle(HttpRequest request, HttpResponse response, HttpContext context) throws HttpException, IOException {
                        Header[] from = request.getHeaders("from");
                        assertEquals("me", from[0].getValue());
                        Header[] to = request.getHeaders("to");
                        assertEquals("[foo, bar]", to[0].getValue());

                        response.setHeader("bar", "yes");
                        response.addHeader("foo", "123");
                        response.addHeader("foo", "456");
                        response.setEntity(new StringEntity("OK", "ASCII"));
                        response.setStatusCode(HttpStatus.SC_OK);
                    }
                }).create();
        localServer.start();

        super.setUp();
    }

    @After
    @Override
    public void tearDown() throws Exception {
        super.tearDown();

        if (localServer != null) {
            localServer.stop();
        }
    }
    
    @Test
    public void testTwoHeadersWithSameKeyHeader() throws Exception {
        Exchange out = template.request("http4://" + localServer.getInetAddress().getHostName() + ":" + localServer.getLocalPort() + "/myapp", new Processor() {
            public void process(Exchange exchange) throws Exception {
                exchange.getIn().setBody(null);
                exchange.getIn().setHeader("from", "me");
                List<String> list = new ArrayList<>();
                list.add("foo");
                list.add("bar");
                exchange.getIn().setHeader("to", list);
            }
        });

        assertNotNull(out);
        assertFalse("Should not fail", out.isFailed());
        assertEquals("OK", out.getOut().getBody(String.class));
        assertEquals("yes", out.getOut().getHeader("bar"));

        List<?> foo = out.getOut().getHeader("foo", List.class);
        assertNotNull(foo);
        assertEquals(2, foo.size());
        assertEquals("123", foo.get(0));
        assertEquals("456", foo.get(1));
    }

}
