/*
    * 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.rest.cxf.service;
  
  import java.time.OffsetDateTime;
  import java.util.List;
  import javax.ws.rs.core.Response;
  import org.apache.commons.lang3.tuple.Pair;
  import org.apache.syncope.common.lib.request.AnyCR;
  import org.apache.syncope.common.lib.request.AnyUR;
  import org.apache.syncope.common.lib.to.PagedResult;
  import org.apache.syncope.common.lib.to.ProvisioningResult;
  import org.apache.syncope.common.lib.to.RemediationTO;
  import org.apache.syncope.common.rest.api.beans.RemediationQuery;
  import org.apache.syncope.common.rest.api.service.RemediationService;
  import org.apache.syncope.core.logic.RemediationLogic;
  import org.apache.syncope.core.persistence.api.dao.AnyDAO;
  import org.apache.syncope.core.persistence.api.dao.AnyObjectDAO;
  import org.apache.syncope.core.persistence.api.dao.GroupDAO;
  import org.apache.syncope.core.persistence.api.dao.NotFoundException;
  import org.apache.syncope.core.persistence.api.dao.UserDAO;
  import org.springframework.stereotype.Service;
  
  @Service
  public class RemediationServiceImpl extends AbstractService implements RemediationService {
  
      protected final RemediationLogic logic;
  
      protected final UserDAO userDAO;
  
      protected final GroupDAO groupDAO;
  
      protected final AnyObjectDAO anyObjectDAO;
  
      public RemediationServiceImpl(
              final RemediationLogic logic,
              final UserDAO userDAO,
              final GroupDAO groupDAO,
              final AnyObjectDAO anyObjectDAO) {
  
          this.logic = logic;
          this.userDAO = userDAO;
          this.groupDAO = groupDAO;
          this.anyObjectDAO = anyObjectDAO;
      }
  
      @Override
      public PagedResult<RemediationTO> list(final RemediationQuery query) {
          Pair<Integer, List<RemediationTO>> result = logic.list(
                  query.getBefore(),
                  query.getAfter(),
                  query.getPage(),
                  query.getSize(),
                  getOrderByClauses(query.getOrderBy()));
          return buildPagedResult(result.getRight(), query.getPage(), query.getSize(), result.getLeft());
      }
  
      @Override
      public RemediationTO read(final String key) {
          return logic.read(key);
      }
  
      @Override
      public Response delete(final String key) {
          logic.delete(key);
          return Response.noContent().build();
      }
  
      @Override
      public Response remedy(final String remediationKey, final AnyCR anyCR) {
          ProvisioningResult<?> created = logic.remedy(remediationKey, anyCR, isNullPriorityAsync());
          return createResponse(created);
      }
  
      private void check(final String key, final String anyKey) {
          RemediationTO remediation = logic.read(key);
  
          AnyDAO<?> anyDAO;
          switch (remediation.getAnyType()) {
              case "USER":
                  anyDAO = userDAO;
                  break;
  
             case "GROUP":
                 anyDAO = groupDAO;
                 break;
 
             default:
                 anyDAO = anyObjectDAO;
         }
 
         OffsetDateTime etag = anyDAO.findLastChange(anyKey);
         if (etag == null) {
             throw new NotFoundException(remediation.getAnyType() + " for " + key);
         }
         checkETag(String.valueOf(etag.toInstant().toEpochMilli()));
     }
 
     @Override
     public Response remedy(final String remediationKey, final AnyUR anyUR) {
         check(remediationKey, anyUR.getKey());
 
         ProvisioningResult<?> updated = logic.remedy(remediationKey, anyUR, isNullPriorityAsync());
         return modificationResponse(updated);
     }
 
     @Override
     public Response remedy(final String remediationKey, final String anyKey) {
         check(remediationKey, anyKey);
 
         ProvisioningResult<?> deleted = logic.remedy(remediationKey, anyKey, isNullPriorityAsync());
         return modificationResponse(deleted);
     }
 
 }