/*
    * 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.imaging.formats.jpeg.exif;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.io.File;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.commons.imaging.Imaging;
  import org.apache.commons.imaging.common.ImageMetadata;
  import org.apache.commons.imaging.formats.jpeg.JpegImageMetadata;
  import org.apache.commons.imaging.formats.tiff.TiffField;
  import org.apache.commons.imaging.formats.tiff.TiffImageMetadata;
  import org.apache.commons.imaging.formats.tiff.constants.TiffTagConstants;
  import org.junit.jupiter.api.Test;
  
  public class AsciiFieldTest extends AbstractExifTest {
  
      @Test
      public void testSingleImage() throws Exception {
          final File imageFile = getTestImageByName("Canon Powershot SD750 - 2007.12.26.n.IMG_3704.JPG");
  
          final ImageMetadata metadata = Imaging.getMetadata(imageFile);
          assertNotNull(metadata);
          final JpegImageMetadata jpegMetadata = (JpegImageMetadata) metadata;
  
          // note that exif might be null if no Exif metadata is found.
          final TiffImageMetadata exif = jpegMetadata.getExif();
          final List<TiffField> fields = exif.getAllFields();
          final Map<Integer, TiffField> fieldMap = new HashMap<>();
          // Build a simplified field tag -> field map, ignoring directory
          // structures.
          // Good enough for our purposes, since the image in question is known.
          for (final TiffField field : fields) {
              fieldMap.put(field.getTag(), field);
          }
  
          final Map<Integer, Object> expectedFieldValues = new HashMap<>();
          expectedFieldValues.put(TiffTagConstants.TIFF_TAG_MAKE.tag, "Canon");
          expectedFieldValues.put(TiffTagConstants.TIFF_TAG_MODEL.tag, "Canon PowerShot SD750");
          expectedFieldValues.put(TiffTagConstants.TIFF_TAG_DATE_TIME.tag, "2007:12:25 13:34:39");
  
          for (final Map.Entry<Integer, Object> tag : expectedFieldValues.entrySet()) {
              assertTrue(fieldMap.containsKey(tag.getKey()));
              final TiffField field = fieldMap.get(tag.getKey());
              assertNotNull(field);
              final Object value = field.getValue();
              assertNotNull(value);
              assertEquals(value, tag.getValue());
          }
      }
  }