/*
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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.
   * ====================================================================
   *
   * 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
   * <http://www.apache.org/>.
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   */
  
  package org.apache.hc.client5.http.impl.classic;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.junit.jupiter.api.Assertions.fail;
  import static org.mockito.ArgumentMatchers.any;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.when;
  
  import java.io.IOException;
  import java.net.Socket;
  
  import org.apache.hc.client5.http.auth.Credentials;
  import org.apache.hc.client5.http.auth.UsernamePasswordCredentials;
  import org.apache.hc.client5.http.config.RequestConfig;
  import org.apache.hc.client5.http.io.ManagedHttpClientConnection;
  import org.apache.hc.core5.http.ClassicHttpResponse;
  import org.apache.hc.core5.http.HttpException;
  import org.apache.hc.core5.http.HttpHost;
  import org.apache.hc.core5.http.impl.io.HttpRequestExecutor;
  import org.apache.hc.core5.http.io.HttpConnectionFactory;
  import org.junit.jupiter.api.Test;
  
  class TestProxyClient {
  
      @Test
      void testTunnelWithInvalidPort() throws IOException {
          // Mock dependencies
          final HttpConnectionFactory<ManagedHttpClientConnection> connFactory = mock(HttpConnectionFactory.class);
          final ManagedHttpClientConnection managedConnection = mock(ManagedHttpClientConnection.class);
          when(connFactory.createConnection(null)).thenReturn(managedConnection);
  
          final HttpRequestExecutor requestExecutor = mock(HttpRequestExecutor.class);
          final ClassicHttpResponse response = mock(ClassicHttpResponse.class);
          when(response.getCode()).thenReturn(200);
          try {
              when(requestExecutor.execute(any(), any(), any())).thenReturn(response);
          } catch (final IOException | HttpException e) {
              fail("Shouldn't fail");
          }
  
          final RequestConfig requestConfig = RequestConfig.DEFAULT;
  
          final ProxyClient client = new ProxyClient(connFactory, null, null, requestConfig);
  
          final HttpHost proxy = new HttpHost("proxy.example.com", 8080);
          final HttpHost target = new HttpHost("target.example.com", -1); // Invalid port
          final Credentials credentials = new UsernamePasswordCredentials("user", "pass".toCharArray());
  
          assertThrows(IllegalArgumentException.class, () -> client.tunnel(proxy, target, credentials));
      }
  
      @Test
      void testSuccessfulTunnel() throws IOException, HttpException {
          // Mock dependencies
          final HttpConnectionFactory<ManagedHttpClientConnection> connFactory = mock(HttpConnectionFactory.class);
  
          final ManagedHttpClientConnection managedConnection = mock(ManagedHttpClientConnection.class);
          when(managedConnection.isOpen()).thenReturn(true); // Always return true for isOpen()
          when(connFactory.createConnection(null)).thenReturn(managedConnection);
  
          final ClassicHttpResponse mockResponse = mock(ClassicHttpResponse.class);
          when(mockResponse.getCode()).thenReturn(200); // Successful response
          when(managedConnection.receiveResponseHeader()).thenReturn(mockResponse);
  
          final HttpRequestExecutor mockRequestExecutor = mock(HttpRequestExecutor.class);
          when(mockRequestExecutor.execute(any(), any(), any())).thenReturn(mockResponse);
  
          final Socket mockSocket = mock(Socket.class);
          when(managedConnection.getSocket()).thenReturn(mockSocket);
  
         final RequestConfig requestConfig = RequestConfig.DEFAULT;
 
         final ProxyClient client = new ProxyClient(connFactory, null, null, requestConfig);
 
         final HttpHost proxy = new HttpHost("proxy.example.com", 8080);
         final HttpHost target = new HttpHost("target.example.com", 80); // Valid port
         final Credentials credentials = new UsernamePasswordCredentials("user", "pass".toCharArray());
 
         final Socket resultSocket = client.tunnel(proxy, target, credentials);
         assertNotNull(resultSocket, "Expected a valid socket object");
         assertEquals(mockSocket, resultSocket, "Expected the mock socket to be returned");
     }
 
 }