/*
    * Copyright (c) 2002-2026 Gargoyle Software Inc.
    *
    * Licensed 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
    * https://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.htmlunit.platform;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.lang.reflect.InvocationTargetException;
  
  import org.apache.commons.lang3.reflect.ConstructorUtils;
  import org.htmlunit.platform.canvas.rendering.AwtRenderingBackend;
  import org.htmlunit.platform.canvas.rendering.NoOpRenderingBackend;
  import org.htmlunit.platform.canvas.rendering.RenderingBackend;
  import org.htmlunit.platform.font.AwtFontUtil;
  import org.htmlunit.platform.font.FontUtil;
  import org.htmlunit.platform.font.NoOpFontUtil;
  import org.htmlunit.platform.image.ImageData;
  import org.htmlunit.platform.image.NoOpImageData;
  
  /**
   * Singleton to handle JDK specific stuff.
   * This is required to support at least the differences with android.
   *
   * @author Ronald Brill
   * @author Sven Strickroth
   */
  public final class Platform {
  
      // private static final Log LOG = LogFactory.getLog(Platform.class);
  
      private static FontUtil FontUtil_;
  
      /**
       * @param imageWidth the width of the image this backend is for
       * @param imageHeight the height of the image this backend is for
       * @return a new {@link RenderingBackend}. If the {@link AwtRenderingBackend} can't be used a
       *         {@link NoOpRenderingBackend} is used instead.
       */
      public static RenderingBackend getRenderingBackend(final int imageWidth, final int imageHeight) {
          // for Android
          try {
              final Class<?> backendClass = Class.forName(
                          "org.htmlunit.platform.canvas.rendering.AwtRenderingBackend");
              return (RenderingBackend) ConstructorUtils.invokeConstructor(backendClass, imageWidth, imageHeight);
          }
          catch (final Throwable e) {
              return new NoOpRenderingBackend(imageWidth, imageHeight);
          }
      }
  
      /**
       * @return a new {@link FontUtil}. If the {@link AwtFontUtil} can't be used a
       *         {@link NoOpFontUtil} is used instead.
       */
      public static FontUtil getFontUtil() {
          // for Android
          if (FontUtil_ != null) {
              return FontUtil_;
          }
  
          try {
              final Class<?> backendClass = Class.forName("org.htmlunit.platform.font.AwtFontUtil");
              FontUtil_ = (FontUtil) ConstructorUtils.invokeConstructor(backendClass);
              return FontUtil_;
          }
          catch (final Throwable e) {
              FontUtil_ = new NoOpFontUtil();
              return FontUtil_;
          }
      }
  
      /**
       * @param inputStream the {@link InputStream} to read from
       * @return a new {@link ImageData} object constructed from the given inputStream
       * @throws IOException in case of error
       */
      public static ImageData buildImageData(final InputStream inputStream) throws IOException {
          try {
              final Class<?> backendClass = Class.forName(
                          "org.htmlunit.platform.image.ImageIOImageData");
              return (ImageData) ConstructorUtils.invokeConstructor(backendClass, inputStream);
          }
          catch (final InvocationTargetException ex) {
              final Throwable targetEx = ex.getTargetException();
              if (targetEx instanceof IOException exception) {
                  throw exception;
              }
  
             return new NoOpImageData();
         }
         catch (final RuntimeException ex) {
             throw ex;
         }
         catch (final Throwable ex) {
             return new NoOpImageData();
         }
     }
 
     private Platform() {
         // util class
     }
 }