/*
    * ====================================================================
    * 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/>.
   *
   */
  
  package org.apache.hc.core5.http.nio.entity;
  
  import java.io.File;
  import java.io.FileOutputStream;
  import java.io.OutputStreamWriter;
  import java.io.Writer;
  import java.nio.charset.StandardCharsets;
  
  import org.apache.hc.core5.http.ContentType;
  import org.apache.hc.core5.http.WritableByteChannelMock;
  import org.apache.hc.core5.http.nio.AsyncEntityProducer;
  import org.apache.hc.core5.http.nio.BasicDataStreamChannel;
  import org.apache.hc.core5.http.nio.DataStreamChannel;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  public class TestFileAsyncEntityProducer {
  
      private File tempFile;
  
      @BeforeEach
      public void setup() throws Exception {
          tempFile = File.createTempFile("testing", ".txt");
          try (final Writer writer = new OutputStreamWriter(new FileOutputStream(tempFile), StandardCharsets.US_ASCII)) {
              writer.append("abcdef");
              writer.flush();
          }
      }
  
      @AfterEach
      public void cleanup() {
          if (tempFile != null) {
              tempFile.delete();
              tempFile = null;
          }
      }
      @Test
      public void testTextContent() throws Exception {
  
          final AsyncEntityProducer producer = new FileEntityProducer(tempFile, ContentType.TEXT_PLAIN);
  
          Assertions.assertEquals(6, producer.getContentLength());
          Assertions.assertEquals(ContentType.TEXT_PLAIN.toString(), producer.getContentType());
          Assertions.assertNull(producer.getContentEncoding());
  
          final WritableByteChannelMock byteChannel = new WritableByteChannelMock(1024);
          final DataStreamChannel streamChannel = new BasicDataStreamChannel(byteChannel);
  
          producer.produce(streamChannel);
          producer.produce(streamChannel);
  
          Assertions.assertFalse(byteChannel.isOpen());
          Assertions.assertEquals("abcdef", byteChannel.dump(StandardCharsets.US_ASCII));
      }
  
      @Test
      public void testTextContentRepeatable() throws Exception {
          final AsyncEntityProducer producer = new FileEntityProducer(tempFile, ContentType.TEXT_PLAIN);
  
          Assertions.assertEquals(6, producer.getContentLength());
          Assertions.assertEquals(ContentType.TEXT_PLAIN.toString(), producer.getContentType());
          Assertions.assertNull(producer.getContentEncoding());
  
          for (int i = 0; i < 3; i++) {
              final WritableByteChannelMock byteChannel = new WritableByteChannelMock(1024);
              final DataStreamChannel streamChannel = new BasicDataStreamChannel(byteChannel);
  
              producer.produce(streamChannel);
              producer.produce(streamChannel);
  
             Assertions.assertFalse(byteChannel.isOpen());
             Assertions.assertEquals("abcdef", byteChannel.dump(StandardCharsets.US_ASCII));
 
             producer.releaseResources();
         }
     }
 
 }