/*
 * 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.dataformat.tarfile;

import java.util.Iterator;

import org.apache.camel.AggregationStrategy;
import org.apache.camel.Exchange;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.mock.MockEndpoint;
import org.junit.Test;

public class TarFileMultipleFilesSplitterTest extends TarSplitterRouteTest {
    static final String PROCESSED_FILES_HEADER_NAME = "processedFiles";
    
    @Test
    public void testSplitter() throws InterruptedException {
        MockEndpoint processTarEntry = getMockEndpoint("mock:processTarEntry");
        MockEndpoint splitResult = getMockEndpoint("mock:splitResult");

        processTarEntry.expectedBodiesReceivedInAnyOrder("chau", "hi", "hola", "hello", "greetings");

        splitResult.expectedBodiesReceivedInAnyOrder("chiau.txt", "hi.txt", "hola.txt", "another/hello.txt", "other/greetings.txt");

        assertMockEndpointsSatisfied();
    }
    
    @Override
    protected RouteBuilder createRouteBuilder() throws Exception {
        return new RouteBuilder() {
            @Override
            public void configure() throws Exception {
                // Untar file and Split it according to FileEntry
                TarFileDataFormat tarFile = new TarFileDataFormat();
                tarFile.setUsingIterator(true);
                from("file:src/test/resources/org/apache/camel/dataformat/tarfile/data/?consumer.delay=1000&noop=true")
                    .unmarshal(tarFile)
                    .split(bodyAs(Iterator.class))
                        .streaming()
                        .aggregationStrategy(updateHeader())
                        .convertBodyTo(String.class)
                        .to("mock:processTarEntry")
                    .end()
                    .log("Done processing big file: ${header.CamelFileName}")
                    .setBody().header(PROCESSED_FILES_HEADER_NAME)
                    .split().body()
                        .to("mock:splitResult");
            }
        };

    }
    
    private AggregationStrategy updateHeader() {
        return new AggregationStrategy() {
            @Override
            public Exchange aggregate(Exchange oldExchange, Exchange newExchange) {
                if (oldExchange != null) {
                    String processedFiles = oldExchange.getIn().getHeader(PROCESSED_FILES_HEADER_NAME, String.class);
                    if (processedFiles == null) {
                        processedFiles = oldExchange.getIn().getHeader(TarIterator.TARFILE_ENTRY_NAME_HEADER, String.class);
                    }
                    processedFiles = processedFiles + "," + newExchange.getIn().getHeader(TarIterator.TARFILE_ENTRY_NAME_HEADER, String.class);
                    newExchange.getIn().setHeader(PROCESSED_FILES_HEADER_NAME, processedFiles);
                }
                return newExchange;
            }
            
        };
    }

}
