/*
    * 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.icc;
  
  import java.io.ByteArrayInputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.PrintWriter;
  import java.io.StringWriter;
  import java.nio.ByteOrder;
  import java.nio.charset.StandardCharsets;
  import java.util.Arrays;
  import java.util.logging.Logger;
  
  import org.apache.commons.imaging.ImagingException;
  import org.apache.commons.imaging.common.BinaryFunctions;
  
  public class IccTag {
  
      static final int SHALLOW_SIZE = 40;
      private static final Logger LOGGER = Logger.getLogger(IccTag.class.getName());
  
      public final int signature;
      public final int offset;
      public final int length;
      public final IccTagType fIccTagType;
      private byte[] data;
      private IccTagDataType itdt;
      private int dataTypeSignature;
  
      // public final byte[] data;
  
      public IccTag(final int signature, final int offset, final int length, final IccTagType fIccTagType) {
          this.signature = signature;
          this.offset = offset;
          this.length = length;
          this.fIccTagType = fIccTagType;
      }
  
      public void dump(final PrintWriter pw, final String prefix) throws ImagingException, IOException {
          pw.println(prefix + "tag signature: " + Integer.toHexString(signature) + " (" + new String(new byte[] { (byte) (0xff & signature >> 24),
                  (byte) (0xff & signature >> 16), (byte) (0xff & signature >> 8), (byte) (0xff & signature >> 0), }, StandardCharsets.US_ASCII) + ")");
  
          if (data == null) {
              pw.println(prefix + "data: " + Arrays.toString((byte[]) null));
          } else {
              pw.println(prefix + "data: " + data.length);
  
              pw.println(prefix + "data type signature: " + Integer.toHexString(dataTypeSignature) + " ("
                      + new String(new byte[] { (byte) (0xff & dataTypeSignature >> 24), (byte) (0xff & dataTypeSignature >> 16),
                              (byte) (0xff & dataTypeSignature >> 8), (byte) (0xff & dataTypeSignature >> 0), }, StandardCharsets.US_ASCII)
                      + ")");
  
              if (itdt == null) {
                  pw.println(prefix + "IccTagType : " + "unknown");
              } else {
                  pw.println(prefix + "IccTagType : " + itdt.getName());
                  itdt.dump(prefix, data);
              }
  
          }
  
          pw.println("");
          pw.flush();
  
      }
  
      public void dump(final String prefix) throws ImagingException, IOException {
          try (StringWriter sw = new StringWriter();
                  PrintWriter pw = new PrintWriter(sw)) {
              dump(pw, prefix);
              pw.flush();
              sw.flush();
              LOGGER.fine(sw.toString());
          }
      }
  
      private IccTagDataType getIccTagDataType(final int quad) {
          for (final IccTagDataType iccTagDataType : IccTagDataTypes.values()) {
              if (iccTagDataType.getSignature() == quad) {
                  return iccTagDataType;
              }
          }
  
          return null;
     }
 
     public void setData(final byte[] bytes) throws IOException {
         data = bytes;
 
         try (InputStream bis = new ByteArrayInputStream(bytes)) {
             dataTypeSignature = BinaryFunctions.read4Bytes("data type signature", bis, "ICC: corrupt tag data", ByteOrder.BIG_ENDIAN);
 
             itdt = getIccTagDataType(dataTypeSignature);
             // if (itdt != null)
             // {
             // System.out.println("\t\t\t" + "itdt: " + itdt.name);
             // }
         }
     }
 }