/*
    * 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.syncope.core.provisioning.java.propagation;
  
  import java.util.Optional;
  import java.util.Set;
  import org.apache.syncope.common.lib.types.AnyTypeKind;
  import org.apache.syncope.common.lib.types.ResourceOperation;
  import org.apache.syncope.core.persistence.api.entity.task.PropagationData;
  import org.apache.syncope.core.provisioning.api.propagation.PropagationActions;
  import org.apache.syncope.core.provisioning.api.propagation.PropagationTaskInfo;
  import org.apache.syncope.core.spring.implementation.InstanceScope;
  import org.apache.syncope.core.spring.implementation.SyncopeImplementation;
  import org.identityconnectors.framework.common.objects.Attribute;
  import org.identityconnectors.framework.common.objects.AttributeUtil;
  import org.identityconnectors.framework.common.objects.Name;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.transaction.annotation.Transactional;
  
  /**
   * This class is required during setup of an External Resource based on the ConnId
   * <a href="https://github.com/Tirasa/ConnIdGoogleAppsBundle">GoogleApps connector</a>.
   *
   * It ensures to send the configured e-mail address as {@code __NAME__}.
   */
  @SyncopeImplementation(scope = InstanceScope.PER_CONTEXT)
  public class GoogleAppsPropagationActions implements PropagationActions {
  
      protected static final Logger LOG = LoggerFactory.getLogger(GoogleAppsPropagationActions.class);
  
      protected String getEmailAttrName() {
          return "emails";
      }
  
      @Transactional
      @Override
      public void before(final PropagationTaskInfo taskInfo) {
          if (taskInfo.getOperation() == ResourceOperation.DELETE || taskInfo.getOperation() == ResourceOperation.NONE) {
              return;
          }
          if (AnyTypeKind.USER != taskInfo.getAnyTypeKind()) {
              return;
          }
  
          PropagationData data = taskInfo.getPropagationData();
          if (data.getAttributes() != null) {
              Set<Attribute> attrs = data.getAttributes();
  
              if (AttributeUtil.find(getEmailAttrName(), attrs) == null) {
                  LOG.warn("Can't find {} to set as {} attribute value, skipping...", getEmailAttrName(), Name.NAME);
                  return;
              }
  
              Optional.ofNullable(AttributeUtil.getNameFromAttributes(attrs)).ifPresent(attrs::remove);
              attrs.add(new Name(AttributeUtil.find(getEmailAttrName(), attrs).getValue().get(0).toString()));
          }
      }
  }