/*
    * The contents of this file are subject to the terms of the Common Development and
    * Distribution License (the License). You may not use this file except in compliance with the
    * License.
    *
    * You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
    * specific language governing permission and limitations under the License.
    *
    * When distributing Covered Software, include this CDDL Header Notice in each file and include
   * the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
   * Header, with the fields enclosed by brackets [] replaced by your own identifying
   * information: "Portions copyright [year] [name of copyright owner]".
   *
   * Copyright 2015-2017 ForgeRock AS.
   */
  
  package org.forgerock.json.resource;
  
  import static org.forgerock.util.promise.Promises.*;
  
  import org.forgerock.services.context.Context;
  import org.forgerock.util.promise.Promise;
  
  class InterfaceSingletonHandler implements RequestHandler {
      private final SingletonResourceProvider provider;
  
      InterfaceSingletonHandler(final SingletonResourceProvider provider) {
          this.provider = provider;
      }
  
      @Override
      public Promise<ActionResponse, ResourceException> handleAction(final Context context,
              final ActionRequest request) {
          return provider.actionInstance(context, request);
      }
  
      @Override
      public final Promise<ResourceResponse, ResourceException> handleCreate(final Context context,
              final CreateRequest request) {
          // TODO: i18n
          return new CreateNotSupportedException(String.format("The singleton resource %s cannot be created",
                  request.getResourcePath())).asPromise();
      }
  
      @Override
      public final Promise<ResourceResponse, ResourceException> handleDelete(final Context context,
              final DeleteRequest request) {
          // TODO: i18n
          return newExceptionPromise(Resources.newBadRequestException(
                  "The singleton resource %s cannot be deleted", request.getResourcePath()));
      }
  
      @Override
      public Promise<ResourceResponse, ResourceException> handlePatch(final Context context,
              final PatchRequest request) {
          return provider.patchInstance(context, request);
      }
  
      @Override
      public final Promise<QueryResponse, ResourceException> handleQuery(final Context context,
              final QueryRequest request, final QueryResourceHandler handler) {
          // TODO: i18n
          return newExceptionPromise(Resources.newBadRequestException(
                  "The singleton resource %s cannot be queried", request.getResourcePath()));
      }
  
      @Override
      public Promise<ResourceResponse, ResourceException> handleRead(final Context context,
              final ReadRequest request) {
          return provider.readInstance(context, request);
      }
  
      @Override
      public Promise<ResourceResponse, ResourceException> handleUpdate(final Context context,
              final UpdateRequest request) {
          return provider.updateInstance(context, request);
      }
  }