/*
    * 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.maven.index.updater;
  
  import java.io.File;
  import java.io.IOException;
  import java.net.ServerSocket;
  import java.nio.file.Files;
  import java.util.ArrayList;
  import java.util.List;
  
  import com.google.inject.Inject;
  import org.apache.maven.index.Java11HttpClient;
  import org.apache.maven.index.context.DefaultIndexingContext;
  import org.apache.maven.index.context.IndexCreator;
  import org.apache.maven.index.context.IndexingContext;
  import org.apache.maven.index.context.UnsupportedExistingLuceneIndexException;
  import org.apache.maven.index.updater.fixtures.ServerTestFixture;
  import org.codehaus.plexus.util.FileUtils;
  import org.eclipse.sisu.launch.InjectedTest;
  import org.junit.Test;
  
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertTrue;
  import static org.junit.Assert.fail;
  
  public class DefaultIndexUpdaterEmbeddingIT extends InjectedTest {
      private String baseUrl;
  
      private ServerTestFixture server;
  
      @Inject
      private IndexUpdater updater;
  
      @Override
      public void setUp() throws Exception {
  
          int port;
          try (final ServerSocket ss = new ServerSocket(0)) {
              ss.setReuseAddress(true);
              port = ss.getLocalPort();
          }
  
          baseUrl = "http://127.0.0.1:" + port + "/";
          server = new ServerTestFixture(port);
  
          super.setUp();
      }
  
      @Override
      public void tearDown() throws Exception {
          server.stop();
      }
  
      @Test
      public void testBasicIndexRetrieval() throws IOException, UnsupportedExistingLuceneIndexException {
          File basedir = Files.createTempDirectory("nexus-indexer.").toFile();
          basedir.delete();
          basedir.mkdirs();
  
          try {
              IndexingContext ctx = newTestContext(basedir, baseUrl);
  
              IndexUpdateRequest updateRequest = new IndexUpdateRequest(ctx, new Java11HttpClient());
  
              updater.fetchAndUpdateIndex(updateRequest);
  
              ctx.close(false);
          } finally {
              try {
                  FileUtils.forceDelete(basedir);
              } catch (IOException e) {
              }
          }
      }
  
      @Test
      public void testIndexTempDirB() throws IOException, UnsupportedExistingLuceneIndexException {
          File basedir = Files.createTempDirectory("nexus-indexer.").toFile();
          basedir.delete();
          basedir.mkdirs();
  
          File indexTempDir = Files.createTempDirectory("index-temp").toFile();
         indexTempDir.delete();
         // temp dir should not exists
         assertFalse(indexTempDir.exists());
 
         try {
             IndexingContext ctx = newTestContext(basedir, baseUrl);
 
             IndexUpdateRequest updateRequest = new IndexUpdateRequest(ctx, new Java11HttpClient());
             updateRequest.setIndexTempDir(indexTempDir);
 
             updater.fetchAndUpdateIndex(updateRequest);
 
             // dir should still exists after retrival
             assertTrue(indexTempDir.exists());
             indexTempDir.delete();
             ctx.close(false);
         } finally {
             try {
                 FileUtils.forceDelete(basedir);
             } catch (IOException e) {
             }
         }
     }
 
     @Test
     public void testBasicHighLatencyIndexRetrieval() throws IOException, UnsupportedExistingLuceneIndexException {
         File basedir = Files.createTempDirectory("nexus-indexer.").toFile();
 
         try {
             IndexingContext ctx = newTestContext(basedir, baseUrl + "slow/");
 
             IndexUpdateRequest updateRequest = new IndexUpdateRequest(ctx, new Java11HttpClient());
 
             updater.fetchAndUpdateIndex(updateRequest);
 
             ctx.close(false);
         } finally {
             try {
                 FileUtils.forceDelete(basedir);
             } catch (IOException e) {
             }
         }
     }
 
     @Test
     public void testIndexRetrieval_InfiniteRedirection() throws IOException, UnsupportedExistingLuceneIndexException {
         File basedir = Files.createTempDirectory("nexus-indexer.").toFile();
 
         try {
             IndexingContext ctx = newTestContext(basedir, baseUrl + "redirect-trap/");
 
             IndexUpdateRequest updateRequest = new IndexUpdateRequest(ctx, new Java11HttpClient());
 
             try {
                 updater.fetchAndUpdateIndex(updateRequest);
                 fail("Should throw IOException from too many redirects.");
             } catch (IOException e) {
                 System.out.println("Operation timed out due to too many redirects, as expected.");
             }
 
             ctx.close(false);
         } finally {
             try {
                 FileUtils.forceDelete(basedir);
             } catch (IOException e) {
             }
         }
     }
 
     @Test
     public void testIndexRetrieval_BadHostname() throws IOException, UnsupportedExistingLuceneIndexException {
         File basedir = Files.createTempDirectory("nexus-indexer.").toFile();
 
         try {
             IndexingContext ctx = newTestContext(basedir, "http://dummy/");
 
             IndexUpdateRequest updateRequest = new IndexUpdateRequest(ctx, new Java11HttpClient());
 
             try {
                 updater.fetchAndUpdateIndex(updateRequest);
                 fail("Should timeout and throw IOException.");
             } catch (Exception e) {
                 System.out.println("Connection failed as expected.");
             }
 
             ctx.close(false);
         } finally {
             try {
                 FileUtils.forceDelete(basedir);
             } catch (IOException e) {
             }
         }
     }
 
     private IndexingContext newTestContext(final File basedir, final String baseUrl)
             throws IOException, UnsupportedExistingLuceneIndexException {
         IndexCreator min = lookup(IndexCreator.class, "min");
         IndexCreator jar = lookup(IndexCreator.class, "jarContent");
 
         List<IndexCreator> creators = new ArrayList<>();
         creators.add(min);
         creators.add(jar);
 
         String repositoryId = "test";
 
         return new DefaultIndexingContext(
                 repositoryId, repositoryId, basedir, basedir, baseUrl, baseUrl, creators, true);
     }
 }