/*
    * 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.gif;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  import org.apache.commons.imaging.common.ImageMetadata;
  
  public class GifImageMetadata implements ImageMetadata {
  
      private static final String NEWLINE = System.lineSeparator();
      private final int width;
      private final int height;
      private final List<GifImageMetadataItem> items;
  
      GifImageMetadata(final int width, final int height, final List<GifImageMetadataItem> items) {
          this.width = width;
          this.height = height;
          this.items = Collections.unmodifiableList(new ArrayList<>(items));
      }
  
      public int getHeight() {
          return height;
      }
  
      @Override
      public List<GifImageMetadataItem> getItems() {
          return Collections.unmodifiableList(items);
      }
  
      public int getWidth() {
          return width;
      }
  
      @Override
      public String toString(String prefix) {
          prefix = prefix == null ? "" : prefix;
          final StringBuilder result = new StringBuilder();
          result.append(String.format("%sGIF metadata:", prefix));
          result.append(String.format("%sWidth: %d%s", prefix, width, NEWLINE));
          result.append(String.format("%sHeight: %d%s", prefix, height, NEWLINE));
          result.append(NEWLINE);
          result.append(String.format("%sImages:", prefix));
          for (final GifImageMetadataItem item : items) {
              result.append(NEWLINE);
              result.append(item.toString(prefix));
          }
          return result.toString();
      }
  }