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.messaging.it.util.scheme;
  
  import java.io.StringReader;
  import java.util.ArrayList;
  import java.util.List;
  
  import jakarta.enterprise.inject.Produces;
  import jakarta.inject.Singleton;
  import jakarta.json.Json;
  import jakarta.json.JsonObject;
  import jakarta.json.stream.JsonParser;
  import org.apache.camel.CamelContext;
  import org.apache.camel.ExtendedCamelContext;
  import org.apache.camel.catalog.RuntimeCamelCatalog;
  import org.apache.camel.spi.ComponentNameResolver;
  import org.apache.camel.support.PluginHelper;
  
  public class MessagingComponentSchemeProducer {
  
      @Produces
      @Singleton
      public ComponentScheme getMessagingComponentScheme(CamelContext camelContext) {
          ExtendedCamelContext context = camelContext.getCamelContextExtension();
          RuntimeCamelCatalog catalog = context.getContextPlugin(RuntimeCamelCatalog.class);
          ComponentNameResolver resolver = PluginHelper.getComponentNameResolver(context);
          List<JsonObject> schemas = new ArrayList<>();
  
          for (String name : resolver.resolveNames(camelContext)) {
              // Catalog is hard coded to return the JSON schema for the JMS component so just assume activemq is the component to work with
              if (name.equals("activemq")) {
                  return new ComponentScheme("activemq");
              }
  
              String json = catalog.componentJSonSchema(name);
              try (JsonParser parser = Json.createParser(new StringReader(json))) {
                  // START_OBJECT
                  parser.next();
                  // Schema root
                  parser.next();
                  // Component schema
                  parser.next();
                  JsonObject component = parser.getObject();
                  if (component != null) {
                      JsonObject object = component.asJsonObject();
                      String label = object.getString("label");
                      if (label.contains("messaging") && !label.contains("core")) {
                          schemas.add(object);
                      }
                  }
              }
          }
  
          if (schemas.isEmpty()) {
              throw new RuntimeException("No messaging component extensions were found on the classpath");
          }
  
          // Resolve cases where one component extends another and figure out which to use. E.g the subclassed component
          if (schemas.size() == 2) {
              try {
                  Class<?> classA = Class.forName(schemas.get(0).getString("javaType"));
                  Class<?> classB = Class.forName(schemas.get(1).getString("javaType"));
                  if (classA.isAssignableFrom(classB)) {
                      schemas.remove(0);
                  }
  
                  if (classB.isAssignableFrom(classA)) {
                      schemas.remove(1);
                  }
              } catch (ClassNotFoundException e) {
                  throw new IllegalStateException(e);
              }
          }
  
          if (schemas.size() > 1) {
              throw new RuntimeException("Expected only 1 messaging component to be resolved but there are " + schemas.size());
          }
  
          return new ComponentScheme(schemas.get(0).getString("scheme"));
      }
  }
  