/*
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    * 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.
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   *
   * 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
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  package org.apache.hc.client5.http.impl;
  
  import java.net.URI;
  
  import org.apache.hc.client5.http.classic.methods.HttpGet;
  import org.apache.hc.client5.http.classic.methods.HttpPost;
  import org.apache.hc.client5.http.protocol.HttpClientContext;
  import org.apache.hc.core5.http.HttpException;
  import org.apache.hc.core5.http.HttpHeaders;
  import org.apache.hc.core5.http.HttpResponse;
  import org.apache.hc.core5.http.HttpStatus;
  import org.apache.hc.core5.http.ProtocolException;
  import org.apache.hc.core5.http.message.BasicHttpResponse;
  import org.junit.Assert;
  import org.junit.Test;
  
  public class TestDefaultRedirectStrategy {
  
      @Test
      public void testIsRedirectedMovedTemporary() throws Exception {
          final DefaultRedirectStrategy redirectStrategy = new DefaultRedirectStrategy();
          final HttpClientContext context = HttpClientContext.create();
          final HttpGet httpget = new HttpGet("http://localhost/");
          final HttpResponse response = new BasicHttpResponse(HttpStatus.SC_MOVED_TEMPORARILY, "Redirect");
          Assert.assertFalse(redirectStrategy.isRedirected(httpget, response, context));
          response.setHeader(HttpHeaders.LOCATION, "http://localhost/blah");
          Assert.assertTrue(redirectStrategy.isRedirected(httpget, response, context));
      }
  
      @Test
      public void testIsRedirectedMovedTemporaryNoLocation() throws Exception {
          final DefaultRedirectStrategy redirectStrategy = new DefaultRedirectStrategy();
          final HttpClientContext context = HttpClientContext.create();
          final HttpGet httpget = new HttpGet("http://localhost/");
          final HttpResponse response = new BasicHttpResponse(HttpStatus.SC_MOVED_TEMPORARILY, "Redirect");
          Assert.assertFalse(redirectStrategy.isRedirected(httpget, response, context));
      }
  
      @Test
      public void testIsRedirectedMovedPermanently() throws Exception {
          final DefaultRedirectStrategy redirectStrategy = new DefaultRedirectStrategy();
          final HttpClientContext context = HttpClientContext.create();
          final HttpGet httpget = new HttpGet("http://localhost/");
          final HttpResponse response = new BasicHttpResponse(HttpStatus.SC_MOVED_PERMANENTLY, "Redirect");
          Assert.assertFalse(redirectStrategy.isRedirected(httpget, response, context));
          response.setHeader(HttpHeaders.LOCATION, "http://localhost/blah");
          Assert.assertTrue(redirectStrategy.isRedirected(httpget, response, context));
      }
  
      @Test
      public void testIsRedirectedTemporaryRedirect() throws Exception {
          final DefaultRedirectStrategy redirectStrategy = new DefaultRedirectStrategy();
          final HttpClientContext context = HttpClientContext.create();
          final HttpGet httpget = new HttpGet("http://localhost/");
          final HttpResponse response = new BasicHttpResponse(HttpStatus.SC_TEMPORARY_REDIRECT, "Redirect");
          Assert.assertFalse(redirectStrategy.isRedirected(httpget, response, context));
          response.setHeader(HttpHeaders.LOCATION, "http://localhost/blah");
          Assert.assertTrue(redirectStrategy.isRedirected(httpget, response, context));
      }
  
      @Test
      public void testIsRedirectedSeeOther() throws Exception {
          final DefaultRedirectStrategy redirectStrategy = new DefaultRedirectStrategy();
          final HttpClientContext context = HttpClientContext.create();
          final HttpGet httpget = new HttpGet("http://localhost/");
          final HttpResponse response = new BasicHttpResponse(HttpStatus.SC_SEE_OTHER, "Redirect");
          Assert.assertFalse(redirectStrategy.isRedirected(httpget, response, context));
          response.setHeader(HttpHeaders.LOCATION, "http://localhost/blah");
          Assert.assertTrue(redirectStrategy.isRedirected(httpget, response, context));
      }
  
      @Test
      public void testIsRedirectedUnknownStatus() throws Exception {
         final DefaultRedirectStrategy redirectStrategy = new DefaultRedirectStrategy();
         final HttpClientContext context = HttpClientContext.create();
         final HttpGet httpget = new HttpGet("http://localhost/");
         final HttpResponse response = new BasicHttpResponse(333, "Redirect");
         Assert.assertFalse(redirectStrategy.isRedirected(httpget, response, context));
         final HttpPost httppost = new HttpPost("http://localhost/");
         Assert.assertFalse(redirectStrategy.isRedirected(httppost, response, context));
     }
 
     @Test
     public void testIsRedirectedInvalidInput() throws Exception {
         final DefaultRedirectStrategy redirectStrategy = new DefaultRedirectStrategy();
         final HttpClientContext context = HttpClientContext.create();
         final HttpGet httpget = new HttpGet("http://localhost/");
         final HttpResponse response = new BasicHttpResponse(HttpStatus.SC_SEE_OTHER, "Redirect");
         try {
             redirectStrategy.isRedirected(null, response, context);
             Assert.fail("NullPointerException expected");
         } catch (final NullPointerException expected) {
         }
         try {
             redirectStrategy.isRedirected(httpget, null, context);
             Assert.fail("NullPointerException expected");
         } catch (final NullPointerException expected) {
         }
     }
 
     @Test
     public void testGetLocationUri() throws Exception {
         final DefaultRedirectStrategy redirectStrategy = new DefaultRedirectStrategy();
         final HttpClientContext context = HttpClientContext.create();
         final HttpGet httpget = new HttpGet("http://localhost/");
         final HttpResponse response = new BasicHttpResponse(HttpStatus.SC_MOVED_TEMPORARILY, "Redirect");
         response.addHeader("Location", "http://localhost/stuff");
         final URI uri = redirectStrategy.getLocationURI(httpget, response, context);
         Assert.assertEquals(URI.create("http://localhost/stuff"), uri);
     }
 
     @Test(expected=HttpException.class)
     public void testGetLocationUriMissingHeader() throws Exception {
         final DefaultRedirectStrategy redirectStrategy = new DefaultRedirectStrategy();
         final HttpClientContext context = HttpClientContext.create();
         final HttpGet httpget = new HttpGet("http://localhost/");
         final HttpResponse response = new BasicHttpResponse(HttpStatus.SC_MOVED_TEMPORARILY, "Redirect");
         redirectStrategy.getLocationURI(httpget, response, context);
     }
 
     @Test(expected=ProtocolException.class)
     public void testGetLocationUriInvalidLocation() throws Exception {
         final DefaultRedirectStrategy redirectStrategy = new DefaultRedirectStrategy();
         final HttpClientContext context = HttpClientContext.create();
         final HttpGet httpget = new HttpGet("http://localhost/");
         final HttpResponse response = new BasicHttpResponse(HttpStatus.SC_MOVED_TEMPORARILY, "Redirect");
         response.addHeader("Location", "http://localhost/not valid");
         redirectStrategy.getLocationURI(httpget, response, context);
     }
 
     @Test
     public void testGetLocationUriRelative() throws Exception {
         final DefaultRedirectStrategy redirectStrategy = new DefaultRedirectStrategy();
         final HttpClientContext context = HttpClientContext.create();
         final HttpGet httpget = new HttpGet("http://localhost/");
         final HttpResponse response = new BasicHttpResponse(HttpStatus.SC_MOVED_TEMPORARILY, "Redirect");
         response.addHeader("Location", "/stuff");
         final URI uri = redirectStrategy.getLocationURI(httpget, response, context);
         Assert.assertEquals(URI.create("http://localhost/stuff"), uri);
     }
 
     @Test
     public void testGetLocationUriRelativeWithFragment() throws Exception {
         final DefaultRedirectStrategy redirectStrategy = new DefaultRedirectStrategy();
         final HttpClientContext context = HttpClientContext.create();
         final HttpGet httpget = new HttpGet("http://localhost/");
         final HttpResponse response = new BasicHttpResponse(HttpStatus.SC_MOVED_TEMPORARILY, "Redirect");
         response.addHeader("Location", "/stuff#fragment");
         final URI uri = redirectStrategy.getLocationURI(httpget, response, context);
         Assert.assertEquals(URI.create("http://localhost/stuff#fragment"), uri);
     }
 
     @Test
     public void testGetLocationUriAbsoluteWithFragment() throws Exception {
         final DefaultRedirectStrategy redirectStrategy = new DefaultRedirectStrategy();
         final HttpClientContext context = HttpClientContext.create();
         final HttpGet httpget = new HttpGet("http://localhost/");
         final HttpResponse response = new BasicHttpResponse(HttpStatus.SC_MOVED_TEMPORARILY, "Redirect");
         response.addHeader("Location", "http://localhost/stuff#fragment");
         final URI uri = redirectStrategy.getLocationURI(httpget, response, context);
         Assert.assertEquals(URI.create("http://localhost/stuff#fragment"), uri);
     }
 
     @Test
     public void testGetLocationUriNormalized() throws Exception {
         final DefaultRedirectStrategy redirectStrategy = new DefaultRedirectStrategy();
         final HttpClientContext context = HttpClientContext.create();
         final HttpGet httpget = new HttpGet("http://localhost/");
         final HttpResponse response = new BasicHttpResponse(HttpStatus.SC_MOVED_TEMPORARILY, "Redirect");
         response.addHeader("Location", "http://localhost/././stuff/../morestuff");
         final URI uri = redirectStrategy.getLocationURI(httpget, response, context);
         Assert.assertEquals(URI.create("http://localhost/morestuff"), uri);
     }
 
     @Test
     public void testGetLocationUriInvalidInput() throws Exception {
         final DefaultRedirectStrategy redirectStrategy = new DefaultRedirectStrategy();
         final HttpClientContext context = HttpClientContext.create();
         final HttpGet httpget = new HttpGet("http://localhost/");
         final HttpResponse response = new BasicHttpResponse(HttpStatus.SC_MOVED_TEMPORARILY, "Redirect");
         response.addHeader("Location", "http://localhost/stuff");
         try {
             redirectStrategy.getLocationURI(null, response, context);
             Assert.fail("NullPointerException expected");
         } catch (final NullPointerException expected) {
         }
         try {
             redirectStrategy.getLocationURI(httpget, null, context);
             Assert.fail("NullPointerException expected");
         } catch (final NullPointerException expected) {
         }
         try {
             redirectStrategy.getLocationURI(httpget, response, null);
             Assert.fail("NullPointerException expected");
         } catch (final NullPointerException expected) {
         }
     }
 
     @Test
     public void testCreateLocationURI() throws Exception {
         final DefaultRedirectStrategy redirectStrategy = new DefaultRedirectStrategy();
         Assert.assertEquals("http://blahblah/",
                 redirectStrategy.createLocationURI("http://BlahBlah").toASCIIString());
     }
 
     @Test(expected=ProtocolException.class)
     public void testCreateLocationURIInvalid() throws Exception {
         final DefaultRedirectStrategy redirectStrategy = new DefaultRedirectStrategy();
         redirectStrategy.createLocationURI(":::::::");
     }
 
 }