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.servlet.deployment;
  
  import java.util.List;
  import java.util.Map.Entry;
  import java.util.Optional;
  
  import io.quarkus.deployment.annotations.BuildProducer;
  import io.quarkus.deployment.annotations.BuildStep;
  import io.quarkus.deployment.builditem.FeatureBuildItem;
  import io.quarkus.undertow.deployment.ServletBuildItem;
  import io.quarkus.undertow.deployment.ServletBuildItem.Builder;
  import io.quarkus.undertow.deployment.WebMetadataBuildItem;
  import jakarta.servlet.MultipartConfigElement;
  import org.apache.camel.quarkus.servlet.runtime.CamelServletConfig;
  import org.apache.camel.quarkus.servlet.runtime.CamelServletConfig.ServletConfig;
  import org.apache.camel.quarkus.servlet.runtime.CamelServletConfig.ServletConfig.MultipartConfig;
  import org.jboss.metadata.web.spec.WebMetaData;
  
  import static org.apache.camel.quarkus.servlet.runtime.CamelServletConfig.ServletConfig.DEFAULT_SERVLET_CLASS;
  
  class ServletProcessor {
      private static final String FEATURE = "camel-servlet";
  
      CamelServletConfig camelServletConfig;
  
      @BuildStep
      FeatureBuildItem feature() {
          return new FeatureBuildItem(FEATURE);
      }
  
      @BuildStep
      void build(BuildProducer<ServletBuildItem> servlet, WebMetadataBuildItem webMetadata) {
          boolean servletCreated = false;
  
          WebMetaData metaData = webMetadata.getWebMetaData();
          if (metaData != null && metaData.getServlets() != null) {
              servletCreated = metaData.getServlets()
                      .stream()
                      .anyMatch(meta -> meta.getServletClass().equals(DEFAULT_SERVLET_CLASS));
          }
  
          if (camelServletConfig.defaultServlet().isValid()) {
              servlet.produce(
                      newServlet(ServletConfig.DEFAULT_SERVLET_NAME, camelServletConfig.defaultServlet()));
              servletCreated = true;
          }
  
          for (Entry<String, ServletConfig> e : camelServletConfig.namedServlets().entrySet()) {
              if (ServletConfig.DEFAULT_SERVLET_NAME.equals(e.getKey())) {
                  throw new IllegalStateException(
                          String.format("Use quarkus.camel.servlet.url-patterns instead of quarkus.camel.servlet.%s.url-patterns",
                                  ServletConfig.DEFAULT_SERVLET_NAME));
              }
              servlet.produce(newServlet(e.getKey(), e.getValue()));
              servletCreated = true;
          }
  
          if (!servletCreated) {
              throw new IllegalStateException(
                      "Map at least one servlet to a path using quarkus.camel.servlet.url-patterns or quarkus.camel.servlet.[your-servlet-name].url-patterns");
          }
      }
  
      static ServletBuildItem newServlet(String key, ServletConfig servletConfig) {
          final String servletName = servletConfig.getEffectiveServletName(key);
          final Optional<List<String>> urlPatterns = servletConfig.urlPatterns();
          if (!urlPatterns.isPresent() || urlPatterns.get().isEmpty()) {
              throw new IllegalStateException(
                      String.format("Missing quarkus.camel.servlet%s.url-patterns",
                              ServletConfig.DEFAULT_SERVLET_NAME.equals(servletName) ? "" : "." + servletName));
          }
  
          final Builder builder = ServletBuildItem.builder(servletName, servletConfig.servletClass());
          for (String pattern : urlPatterns.get()) {
              builder.addMapping(pattern);
          }
  
          // NOTE: We only configure loadOnStartup, async & forceAwait if the default values were overridden
          if (servletConfig.loadOnStartup() > -1) {
              builder.setLoadOnStartup(servletConfig.loadOnStartup());
          }
  
          if (servletConfig.async()) {
              builder.setAsyncSupported(servletConfig.async());
              builder.addInitParam("async", "true");
          }
  
          if (servletConfig.forceAwait()) {
              builder.addInitParam("forceAwait", "true");
          }
  
          servletConfig.executorRef().ifPresent(executorRef -> {
              builder.addInitParam("executorRef", executorRef);
          });
  
          MultipartConfig multipartConfig = servletConfig.multipart();
          if (multipartConfig != null) {
              builder.setMultipartConfig(new MultipartConfigElement(
                      multipartConfig.location(),
                      multipartConfig.maxFileSize(),
                      multipartConfig.maxRequestSize(),
                      multipartConfig.fileSizeThreshold()));
          }
  
          return builder.build();
      }
  }
  