content: /*
   * 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.camel.quarkus.component.xslt;
  
  import java.util.Map;
  
  import javax.xml.transform.TransformerException;
  import javax.xml.transform.TransformerFactory;
  import javax.xml.transform.URIResolver;
  
  import io.quarkus.runtime.RuntimeValue;
  import io.quarkus.runtime.annotations.Recorder;
  import org.apache.camel.CamelContext;
  import org.apache.camel.component.xslt.DefaultXsltUriResolverFactory;
  import org.apache.camel.component.xslt.TransformerFactoryConfigurationStrategy;
  import org.apache.camel.component.xslt.XsltComponent;
  import org.apache.camel.component.xslt.XsltEndpoint;
  import org.apache.camel.quarkus.support.xalan.XalanTransformerFactory;
  
  @Recorder
  public class CamelXsltRecorder {
  
      public RuntimeValue<XsltComponent> createXsltComponent(CamelXsltConfig config,
              RuntimeValue<RuntimeUriResolver.Builder> uriResolverBuilder) {
          final RuntimeUriResolver uriResolver = uriResolverBuilder.getValue().build();
          final QuarkusTransformerFactoryConfigurationStrategy strategy = new QuarkusTransformerFactoryConfigurationStrategy(
                  config.packageName(), config.features(), uriResolver);
          final XsltComponent component = new XsltComponent();
          component.setUriResolverFactory(new QuarkusXsltUriResolverFactory(uriResolver));
          component.setTransformerFactoryConfigurationStrategy(strategy);
          component.setTransformerFactoryClass(XalanTransformerFactory.class.getName());
          return new RuntimeValue<>(component);
      }
  
      public RuntimeValue<RuntimeUriResolver.Builder> createRuntimeUriResolverBuilder() {
          return new RuntimeValue<>(new RuntimeUriResolver.Builder());
      }
  
      public void addRuntimeUriResolverEntry(RuntimeValue<RuntimeUriResolver.Builder> builder, String templateUri,
              String transletClassName) {
          builder.getValue().entry(templateUri, transletClassName);
      }
  
      static class QuarkusXsltUriResolverFactory extends DefaultXsltUriResolverFactory {
          private final RuntimeUriResolver uriResolver;
  
          public QuarkusXsltUriResolverFactory(RuntimeUriResolver uriResolver) {
              this.uriResolver = uriResolver;
          }
  
          @Override
          public URIResolver createUriResolver(CamelContext camelContext, String resourceUri) {
              // It is supposed to catch cases where we compile the translet at build time which is for classpath: XSLT
              // resources in both JVM and native mode.
              // Otherwise, all other cases will be handled by the default XsltUriResolver which is able to load a resource
              // at runtime. So it is only supported in JVM mode.
              if (uriResolver.getTransletClassName(resourceUri) != null) {
                  return uriResolver;
              } else {
                  return super.createUriResolver(camelContext, resourceUri);
              }
          }
      }
  
      static class QuarkusTransformerFactoryConfigurationStrategy implements TransformerFactoryConfigurationStrategy {
  
          private final String packageName;
          private final RuntimeUriResolver uriResolver;
          private final Map<String, Boolean> features;
  
          public QuarkusTransformerFactoryConfigurationStrategy(String packageName, Map<String, Boolean> features,
                  RuntimeUriResolver uriResolver) {
              this.uriResolver = uriResolver;
              this.packageName = packageName;
              this.features = features;
          }
  
          @Override
          public void configure(TransformerFactory tf, XsltEndpoint endpoint) {
              final String className = uriResolver.getTransletClassName(endpoint.getResourceUri());
              if (className != null) {
                  for (Map.Entry<String, Boolean> entry : features.entrySet()) {
                      try {
                          tf.setFeature(entry.getKey(), entry.getValue());
                      } catch (TransformerException e) {
                          throw new RuntimeException("Could not set TransformerFactory feature '"
                                  + entry.getKey() + "' = " + entry.getValue(), e);
                      }
                  }
  
                  tf.setAttribute("use-classpath", true);
                  tf.setAttribute("translet-name", className);
                  tf.setAttribute("package-name", packageName);
                  tf.setErrorListener(new CamelXsltErrorListener());
  
                  endpoint.setTransformerFactory(tf);
              }
          }
      }
  }
  