/*
    * 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.compress.compressors.brotli;
  
  import static org.junit.jupiter.api.Assertions.assertArrayEquals;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.io.ByteArrayOutputStream;
  import java.io.File;
  import java.io.IOException;
  import java.io.InputStream;
  import java.nio.file.Files;
  
  import org.apache.commons.compress.AbstractTest;
  import org.apache.commons.compress.compressors.CompressorInputStream;
  import org.apache.commons.compress.compressors.CompressorStreamFactory;
  import org.apache.commons.io.IOUtils;
  import org.junit.jupiter.api.Test;
  
  public class BrotliCompressorInputStreamTest extends AbstractTest {
  
      @Test
      public void testAvailableShouldReturnZero() throws IOException {
          try (InputStream is = newInputStream("brotli.testdata.compressed");
                  BrotliCompressorInputStream in = new BrotliCompressorInputStream(is)) {
              assertEquals(0, in.available());
          }
      }
  
      /**
       * Tests bridge.
       *
       * @throws IOException
       */
      @Test
      public void testBrotliDecode() throws IOException {
          try (InputStream inputStream = newInputStream("brotli.testdata.compressed");
                  BrotliCompressorInputStream brotliInputStream = new BrotliCompressorInputStream(inputStream)) {
              final byte[] expected = readAllBytes("brotli.testdata.uncompressed");
              final ByteArrayOutputStream bos = new ByteArrayOutputStream();
              int readByte = -1;
              while ((readByte = brotliInputStream.read()) != -1) {
                  bos.write(readByte);
              }
              assertArrayEquals(expected, bos.toByteArray());
          }
      }
  
      @Test
      public void testBrotliUnarchive() throws Exception {
          final File output = newTempFile("bla.tar");
          try (InputStream is = newInputStream("bla.tar.br")) {
              try (CompressorInputStream in = new CompressorStreamFactory().createCompressorInputStream("br", is)) {
                  Files.copy(in, output.toPath());
              }
          }
      }
  
      @Test
      public void testCachingIsEnabledByDefaultAndBrotliIsPresent() {
          assertEquals(BrotliUtils.CachedAvailability.CACHED_AVAILABLE, BrotliUtils.getCachedBrotliAvailability());
          assertTrue(BrotliUtils.isBrotliCompressionAvailable());
      }
  
      @Test
      public void testCanTurnOffCaching() {
          try {
              BrotliUtils.setCacheBrotliAvailablity(false);
              assertEquals(BrotliUtils.CachedAvailability.DONT_CACHE, BrotliUtils.getCachedBrotliAvailability());
              assertTrue(BrotliUtils.isBrotliCompressionAvailable());
          } finally {
              BrotliUtils.setCacheBrotliAvailablity(true);
          }
      }
  
      @Test
      public void testMultiByteReadConsistentlyReturnsMinusOneAtEof() throws IOException {
          final byte[] buf = new byte[2];
          try (InputStream is = newInputStream("brotli.testdata.compressed");
                  BrotliCompressorInputStream in = new BrotliCompressorInputStream(is)) {
              IOUtils.toByteArray(in);
              assertEquals(-1, in.read(buf));
              assertEquals(-1, in.read(buf));
         }
     }
 
     @Test
     public void testShouldBeAbleToSkipAByte() throws IOException {
         try (InputStream is = newInputStream("brotli.testdata.compressed");
                 BrotliCompressorInputStream in = new BrotliCompressorInputStream(is)) {
             assertEquals(1, in.skip(1));
         }
     }
 
     @Test
     public void testSingleByteReadConsistentlyReturnsMinusOneAtEof() throws IOException {
         try (InputStream is = newInputStream("brotli.testdata.compressed");
                 BrotliCompressorInputStream in = new BrotliCompressorInputStream(is)) {
             IOUtils.toByteArray(in);
             assertEquals(-1, in.read());
             assertEquals(-1, in.read());
         }
     }
 
     @Test
     public void testSingleByteReadWorksAsExpected() throws IOException {
         try (InputStream is = newInputStream("brotli.testdata.compressed");
                 BrotliCompressorInputStream in = new BrotliCompressorInputStream(is)) {
             // starts with file name "XXX"
             assertEquals('X', in.read());
         }
     }
 
     @Test
     public void testTurningOnCachingReEvaluatesAvailability() {
         try {
             BrotliUtils.setCacheBrotliAvailablity(false);
             assertEquals(BrotliUtils.CachedAvailability.DONT_CACHE, BrotliUtils.getCachedBrotliAvailability());
             BrotliUtils.setCacheBrotliAvailablity(true);
             assertEquals(BrotliUtils.CachedAvailability.CACHED_AVAILABLE, BrotliUtils.getCachedBrotliAvailability());
         } finally {
             BrotliUtils.setCacheBrotliAvailablity(true);
         }
     }
 
 }