content: /*
   * Copyright 2010-2025 Hyland Software, Inc. and its affiliates.
   *
   * 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
   *
   *     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.activiti.spring.autodeployment;
  
  import java.io.IOException;
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.Map;
  import java.util.Map.Entry;
  import java.util.Set;
  import org.activiti.core.common.spring.project.ApplicationUpgradeContextService;
  import org.activiti.engine.RepositoryService;
  import org.activiti.engine.repository.DeploymentBuilder;
  import org.springframework.core.io.Resource;
  
  /**
   * Implementation of {@link AutoDeploymentStrategy} that performs a separate deployment for each set of {@link Resource}s that share the same parent folder. The namehint is used to prefix the names of
   * deployments. If the parent folder for a {@link Resource} cannot be determined, the resource's name is used.
   *
  
   */
  public class ResourceParentFolderAutoDeploymentStrategy extends AbstractAutoDeploymentStrategy {
  
      /**
       * The deployment mode this strategy handles.
       */
      public static final String DEPLOYMENT_MODE = "resource-parent-folder";
  
      private static final String DEPLOYMENT_NAME_PATTERN = "%s.%s";
  
      public ResourceParentFolderAutoDeploymentStrategy(
          ApplicationUpgradeContextService applicationUpgradeContextService
      ) {
          super(applicationUpgradeContextService);
      }
  
      @Override
      protected String getDeploymentMode() {
          return DEPLOYMENT_MODE;
      }
  
      @Override
      public void deployResources(
          final String deploymentNameHint,
          final Resource[] resources,
          final RepositoryService repositoryService
      ) {
          // Create a deployment for each distinct parent folder using the name
          // hint
          // as a prefix
          final Map<String, Set<Resource>> resourcesMap = createMap(resources);
  
          for (final Entry<String, Set<Resource>> group : resourcesMap.entrySet()) {
              final String deploymentName = determineDeploymentName(deploymentNameHint, group.getKey());
  
              DeploymentBuilder deploymentBuilder = repositoryService
                  .createDeployment()
                  .enableDuplicateFiltering()
                  .name(deploymentName);
  
              for (final Resource resource : group.getValue()) {
                  final String resourceName = determineResourceName(resource);
  
                  deploymentBuilder.addInputStream(resourceName, resource);
              }
  
              loadApplicationUpgradeContext(deploymentBuilder).deploy();
          }
      }
  
      private Map<String, Set<Resource>> createMap(final Resource[] resources) {
          final Map<String, Set<Resource>> resourcesMap = new HashMap<String, Set<Resource>>();
  
          for (final Resource resource : resources) {
              final String parentFolderName = determineGroupName(resource);
              if (resourcesMap.get(parentFolderName) == null) {
                  resourcesMap.put(parentFolderName, new HashSet<Resource>());
              }
              resourcesMap.get(parentFolderName).add(resource);
          }
          return resourcesMap;
      }
  
      private String determineGroupName(final Resource resource) {
          String result = determineResourceName(resource);
          try {
              if (resourceParentIsDirectory(resource)) {
                  result = resource.getFile().getParentFile().getName();
              }
          } catch (IOException e) {
              // no-op, fallback to resource name
          }
          return result;
      }
  
      private boolean resourceParentIsDirectory(final Resource resource) throws IOException {
          return (
              resource.getFile() != null &&
              resource.getFile().getParentFile() != null &&
              resource.getFile().getParentFile().isDirectory()
          );
      }
  
      private String determineDeploymentName(final String deploymentNameHint, final String groupName) {
          return String.format(DEPLOYMENT_NAME_PATTERN, deploymentNameHint, groupName);
      }
  }
  