/*
    * 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.commons.vfs2.provider.http5s;
  
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  
  import java.io.BufferedReader;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.InputStreamReader;
  import java.net.MalformedURLException;
  import java.net.URL;
  import java.nio.charset.StandardCharsets;
  import java.util.stream.Collectors;
  
  import org.apache.commons.vfs2.FileContent;
  import org.apache.commons.vfs2.FileObject;
  import org.apache.commons.vfs2.FileSystemException;
  import org.apache.commons.vfs2.FileSystemManager;
  import org.apache.commons.vfs2.FileSystemOptions;
  import org.apache.commons.vfs2.VFS;
  import org.apache.commons.vfs2.provider.http5.Http5FileSystemConfigBuilder;
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests VFS-427 NPE on Http5FileObject.getContent().getContentInfo().
   */
  public class Http5sGetContentInfoTest {
  
      private static final String SERVER_JCEKS_RES = "org.apache.httpserver/star_apache_cert.ts";
  
      FileSystemOptions getOptionsWithProxy() throws MalformedURLException {
          // get proxy host and port from env var "https_proxy"
          String proxyHost = null;
          int proxyPort = -1;
          final String proxyUrl = System.getenv("https_proxy");
          if (proxyUrl != null) {
              final URL url = new URL(proxyUrl);
              proxyHost = url.getHost();
              proxyPort = url.getPort();
          }
  
          // return null if proxy host or port invalid
          if (proxyHost == null || proxyPort == -1) {
              return null;
          }
  
          // return options with proxy
          final Http5FileSystemConfigBuilder builder = Http5FileSystemConfigBuilder.getInstance();
          final FileSystemOptions opts = new FileSystemOptions();
          builder.setProxyHost(opts, proxyHost);
          builder.setProxyPort(opts, proxyPort);
          return opts;
      }
  
      private FileSystemOptions getOptionsWithSSL() throws MalformedURLException {
              final Http5FileSystemConfigBuilder builder = Http5FileSystemConfigBuilder.getInstance();
              FileSystemOptions opts = getOptionsWithProxy();
              if (opts == null) {
                  opts = new FileSystemOptions();
              }
              final URL serverJksResource = ClassLoader.getSystemClassLoader().getResource(SERVER_JCEKS_RES);
              builder.setKeyStoreFile(opts, serverJksResource.getFile());
              builder.setKeyStorePass(opts, "Hello_1234");
              builder.setKeyStoreType(opts, "JCEKS");
              return opts;
          }
      /**
       * Tests VFS-427 NPE on Http5FileObject.getContent().getContentInfo().
       *
       * @throws FileSystemException thrown when the getContentInfo API fails.
       * @throws MalformedURLException thrown when the System environment contains an invalid URL for an HTTPS proxy.
       */
      @Test
      public void testGetContentInfo() throws FileSystemException, MalformedURLException {
          final FileSystemManager fsManager = VFS.getManager();
          final String uri = "http5://www.apache.org/licenses/LICENSE-2.0.txt";
          final FileObject fo = fsManager.resolveFile(uri, getOptionsWithProxy());
          final FileContent content = fo.getContent();
          assertNotNull(content);
          // Used to NPE before fix:
          content.getContentInfo();
      }
  
      /**
      * Tests VFS-786 set keystore type.
      *
      * @throws FileSystemException   thrown when the getContentInfo API fails.
      * @throws MalformedURLException thrown when the System environment contains an invalid URL for an HTTPS proxy.
      */
     @Test
     public void testSSLGetContentInfo() throws IOException {
         final FileSystemManager fsManager = VFS.getManager();
         final String uri = "http5s://www.apache.org/licenses/LICENSE-2.0.txt";
         final FileObject fo = fsManager.resolveFile(uri, getOptionsWithSSL());
         final FileContent content = fo.getContent();
         try (InputStream is = content.getInputStream()) {
             final String text = new BufferedReader(new InputStreamReader(is, StandardCharsets.UTF_8)).lines().collect(Collectors.joining("\n"));
             assertNotNull(text);
         }
     }
 
 }