/*
    * 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.wa.starter.u2f;
  
  import com.github.benmanes.caffeine.cache.LoadingCache;
  import java.time.OffsetDateTime;
  import java.time.ZoneId;
  import java.util.Collection;
  import java.util.Objects;
  import java.util.stream.Collectors;
  import org.apache.syncope.common.lib.SyncopeClientException;
  import org.apache.syncope.common.lib.types.ClientExceptionType;
  import org.apache.syncope.common.lib.wa.U2FDevice;
  import org.apache.syncope.common.rest.api.beans.U2FDeviceQuery;
  import org.apache.syncope.common.rest.api.service.wa.U2FRegistrationService;
  import org.apache.syncope.wa.bootstrap.WARestClient;
  import org.apereo.cas.adaptors.u2f.storage.BaseU2FDeviceRepository;
  import org.apereo.cas.adaptors.u2f.storage.U2FDeviceRegistration;
  import org.apereo.cas.configuration.CasConfigurationProperties;
  import org.apereo.cas.util.crypto.CipherExecutor;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.springframework.util.CollectionUtils;
  
  public class WAU2FDeviceRepository extends BaseU2FDeviceRepository {
  
      private static final Logger LOG = LoggerFactory.getLogger(WAU2FDeviceRepository.class);
  
      protected static U2FDeviceRegistration parseRegistrationRecord(final String owner, final U2FDevice device) {
          try {
              return U2FDeviceRegistration.builder().
                      id(device.getId()).
                      username(owner).
                      record(device.getRecord()).
                      createdDate(device.getIssueDate().toInstant().atZone(ZoneId.systemDefault()).toLocalDate()).
                      build();
          } catch (Exception e) {
              LOG.error(e.getMessage(), e);
          }
          return null;
      }
  
      protected final WARestClient waRestClient;
  
      protected final OffsetDateTime expirationDate;
  
      public WAU2FDeviceRepository(
              final CasConfigurationProperties casProperties,
              final LoadingCache<String, String> requestStorage,
              final WARestClient waRestClient,
              final OffsetDateTime expirationDate) {
  
          super(casProperties, requestStorage, CipherExecutor.noOpOfSerializableToString());
          this.waRestClient = waRestClient;
          this.expirationDate = expirationDate;
      }
  
      protected U2FRegistrationService service() {
          return waRestClient.getService(U2FRegistrationService.class);
      }
  
      @Override
      public Collection<? extends U2FDeviceRegistration> getRegisteredDevices(final String owner) {
          return service().
                  search(new U2FDeviceQuery.Builder().owner(owner).expirationDate(expirationDate).build()).getResult().
                  stream().
                  map(device -> parseRegistrationRecord(owner, device)).
                  filter(Objects::nonNull).
                  collect(Collectors.toList());
      }
  
      @Override
      public Collection<? extends U2FDeviceRegistration> getRegisteredDevices() {
          return service().search(new U2FDeviceQuery.Builder().expirationDate(expirationDate).build()).getResult().
                  stream().
                  map(device -> parseRegistrationRecord("", device)).
                  filter(Objects::nonNull).
                  collect(Collectors.toList());
      }
  
      @Override
      public U2FDeviceRegistration registerDevice(final U2FDeviceRegistration registration) {
          U2FDevice record = new U2FDevice.Builder().
                 issueDate(OffsetDateTime.of(
                         registration.getCreatedDate().atStartOfDay(), OffsetDateTime.now().getOffset())).
                 record(registration.getRecord()).
                 id(registration.getId()).
                 build();
         service().create(registration.getUsername(), record);
         return parseRegistrationRecord(registration.getUsername(), record);
     }
 
     @Override
     public void deleteRegisteredDevice(final U2FDeviceRegistration registration) {
         service().delete(new U2FDeviceQuery.Builder().id(registration.getId()).build());
     }
 
     @Override
     public boolean isDeviceRegisteredFor(final String owner) {
         try {
             Collection<? extends U2FDeviceRegistration> devices = getRegisteredDevices(owner);
             return !CollectionUtils.isEmpty(devices);
         } catch (final SyncopeClientException e) {
             if (e.getType() == ClientExceptionType.NotFound) {
                 LOG.info("Could not locate account for owner {}", owner);
             } else {
                 LOG.error(e.getMessage(), e);
             }
         }
         return false;
     }
 
     @Override
     public void clean() {
         service().delete(new U2FDeviceQuery.Builder().expirationDate(expirationDate).build());
     }
 
     @Override
     public void removeAll() {
         service().delete(new U2FDeviceQuery.Builder().build());
     }
 }