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/*
 * Copyright 2015-2019 Ping Identity Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License (GPLv2 only)
 * or the terms of the GNU Lesser General Public License (LGPLv2.1 only)
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see .
 */

package com.unboundid.scim2.client;

import com.unboundid.scim2.common.ScimResource;
import com.unboundid.scim2.common.exceptions.ScimException;
import com.unboundid.scim2.common.messages.ListResponse;
import com.unboundid.scim2.common.messages.PatchRequest;
import com.unboundid.scim2.common.types.ResourceTypeResource;
import com.unboundid.scim2.common.types.SchemaResource;
import com.unboundid.scim2.common.types.ServiceProviderConfigResource;

/**
 * Interface providing a way to create, retrieve, update and delete
 * SCIM resources.
 */
public interface ScimInterface
{
  /**
   * Retrieve the service provider configuration.
   *
   * @return the service provider configuration.
   * @throws ScimException if an error occurs.
   */
  ServiceProviderConfigResource getServiceProviderConfig()
      throws ScimException;

  /**
   * Retrieve the resource types supported by the service provider.
   *
   * @return The list of resource types supported by the service provider.
   * @throws ScimException if an error occurs.
   */
  ListResponse getResourceTypes()
          throws ScimException;

  /**
   * Retrieve a known resource type supported by the service provider.
   *
   * @param name The name of the resource type.
   * @return The resource type with the provided name.
   * @throws ScimException if an error occurs.
   */
  ResourceTypeResource getResourceType(String name)
              throws ScimException;

  /**
   * Retrieve the schemas supported by the service provider.
   *
   * @return The list of schemas supported by the service provider.
   * @throws ScimException if an error occurs.
   */
  ListResponse getSchemas()
                  throws ScimException;

  /**
   * Retrieve a known schema supported by the service provider.
   *
   * @param id The schema URN.
   * @return The resource type with the provided URN.
   * @throws ScimException if an error occurs.
   */
  SchemaResource getSchema(String id)
                      throws ScimException;

  /**
   * Create the provided new SCIM resource at the service provider.
   *
   * @param endpoint The resource endpoint such as: "{@code Users}" or "{@code Groups}" as
   *                 defined by the associated resource type.
   * @param resource The new resource to create.
   * @param  The Java type of the resource.
   * @return The successfully create SCIM resource.
   * @throws ScimException if an error occurs.
   */
   T create(
      String endpoint, T resource) throws ScimException;

  /**
   * Retrieve a known SCIM resource from the service provider.
   *
   * @param endpoint The resource endpoint such as: "{@code Users}" or "{@code Groups}" as
   *                 defined by the associated resource type.
   * @param id The resource identifier (for example the value of the "{@code id}"
   *           attribute).
   * @param cls The Java class object used to determine the type to return.
   * @param  The Java type of the resource.
   * @return The successfully retrieved SCIM resource.
   * @throws ScimException if an error occurs.
   */
   T retrieve(
      String endpoint, String id, Class cls)
                              throws ScimException;

  /**
   * Retrieve a known SCIM resource from the service provider. If the
   * service provider supports resource versioning and the resource has not been
   * modified, the provided resource will be returned.
   *
   * @param resource The resource to retrieve.
   * @param  The Java type of the resource.
   * @return The successfully retrieved SCIM resource.
   * @throws ScimException if an error occurs.
   */
   T retrieve(T resource)
                                  throws ScimException;

  /**
   * Modify a SCIM resource by replacing the resource's attributes at the
   * service provider. If the service provider supports resource versioning,
   * the resource will only be modified if it has not been modified since it
   * was retrieved.
   *
   * @param resource The previously retrieved and revised resource.
   * @param  The Java type of the resource.
   * @return The successfully replaced SCIM resource.
   * @throws ScimException if an error occurs.
   */
   T replace(
      T resource) throws ScimException;

  /**
   * Modify a SCIM resource by updating one or more attributes using a sequence
   * of operations to "{@code add}", "{@code remove}", or "{@code replace}" values. The service provider
   * configuration maybe used to discover service provider support for PATCH.
   *
   * @param endpoint The resource endpoint such as: "{@code Users}" or "{@code Groups}" as
   *                 defined by the associated resource type.
   * @param id The resource identifier (for example the value of the "{@code id}"
   *           attribute).
   * @param patchRequest the patch request to use for the update.
   * @param clazz the class of the SCIM resource.
   * @param  The Java type of the resource.
   * @return The modified resource.
   * @throws ScimException if an error occurs.
   */
   T modify(String endpoint,
      String id, PatchRequest patchRequest, Class clazz)
      throws ScimException;

  /**
   * Modify a SCIM resource by updating one or more attributes using a sequence
   * of operations to "{@code add}", "{@code remove}", or "{@code replace}" values. The service provider
   * configuration maybe used to discover service provider support for PATCH.
   *
   * @param resource The resource to modify.
   * @param patchRequest the patch request to use for the update.
   * @param  The Java type of the resource.
   * @return The modified resource.
   * @throws ScimException if an error occurs.
   */
   T modify(
      T resource, PatchRequest patchRequest) throws ScimException;

  /**
   * Delete a SCIM resource at the service provider.
   *
   * @param endpoint The resource endpoint such as: "{@code Users}" or "{@code Groups}" as
   *                 defined by the associated resource type.
   * @param id The resource identifier (for example the value of the "{@code id}"
   *           attribute).
   * @throws ScimException if an error occurs.
   */
  void delete(String endpoint, String id)
                                          throws ScimException;

  /**
   * Delete a SCIM resource at the service provider.
   *
   * @param resource The resource to delete.
   * @param  The Java type of the resource.
   * @throws ScimException if an error occurs.
   */
   void delete(T resource)
                                              throws ScimException;

  /**
   * Search for SCIM resources matching the SCIM filter provided.
   *
   * @param endpoint a SCIM resource type endpoint.
   * @param filter a SCIM filter string.
   * @param clazz the class representing the type of the SCIM resource.
   * @param  The SCIM resource type to return a list of.
   * @return a List of ScimResource objects matching the provided filter.
   * @throws ScimException if an error occurs.
   */
   ListResponse search(
      String endpoint, String filter, Class clazz) throws ScimException;
}