/*
    * 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.logic.wa;
  
  import java.util.List;
  import java.util.stream.Collectors;
  import org.apache.syncope.common.lib.types.IdRepoEntitlement;
  import org.apache.syncope.common.lib.wa.WebAuthnAccount;
  import org.apache.syncope.common.lib.wa.WebAuthnDeviceCredential;
  import org.apache.syncope.core.logic.AbstractAuthProfileLogic;
  import org.apache.syncope.core.persistence.api.dao.AuthProfileDAO;
  import org.apache.syncope.core.persistence.api.dao.NotFoundException;
  import org.apache.syncope.core.persistence.api.entity.EntityFactory;
  import org.apache.syncope.core.persistence.api.entity.am.AuthProfile;
  import org.apache.syncope.core.provisioning.api.data.AuthProfileDataBinder;
  import org.springframework.security.access.prepost.PreAuthorize;
  import org.springframework.transaction.annotation.Transactional;
  
  public class WebAuthnRegistrationLogic extends AbstractAuthProfileLogic {
  
      protected final EntityFactory entityFactory;
  
      public WebAuthnRegistrationLogic(
              final EntityFactory entityFactory,
              final AuthProfileDAO authProfileDAO,
              final AuthProfileDataBinder binder) {
  
          super(authProfileDAO, binder);
          this.entityFactory = entityFactory;
      }
  
      @PreAuthorize("hasRole('" + IdRepoEntitlement.ANONYMOUS + "')")
      @Transactional(readOnly = true)
      public List<WebAuthnAccount> list() {
          return authProfileDAO.findAll(-1, -1).stream().
                  map(profile -> new WebAuthnAccount.Builder().
                  credentials(profile.getWebAuthnDeviceCredentials()).build()).
                  collect(Collectors.toList());
      }
  
      @PreAuthorize("hasRole('" + IdRepoEntitlement.ANONYMOUS + "')")
      @Transactional(readOnly = true)
      public WebAuthnAccount read(final String owner) {
          return authProfileDAO.findByOwner(owner).stream().
                  findFirst().
                  map(profile -> new WebAuthnAccount.Builder().
                  credentials(profile.getWebAuthnDeviceCredentials()).build()).
                  orElseThrow(() -> new NotFoundException("Could not find account for Owner " + owner));
      }
  
      @PreAuthorize("hasRole('" + IdRepoEntitlement.ANONYMOUS + "')")
      public void delete(final String owner) {
          authProfileDAO.findByOwner(owner).ifPresent(profile -> {
              profile.setWebAuthnDeviceCredentials(List.of());
              authProfileDAO.save(profile);
          });
      }
  
      @PreAuthorize("hasRole('" + IdRepoEntitlement.ANONYMOUS + "')")
      public void delete(final String owner, final String credentialId) {
          authProfileDAO.findByOwner(owner).stream().findFirst().
                  ifPresent(profile -> {
                      List<WebAuthnDeviceCredential> credentials = profile.getWebAuthnDeviceCredentials();
                      if (credentials.removeIf(acct -> acct.getIdentifier().equals(credentialId))) {
                          profile.setWebAuthnDeviceCredentials(credentials);
                          authProfileDAO.save(profile);
                      }
                  });
      }
  
      @PreAuthorize("hasRole('" + IdRepoEntitlement.ANONYMOUS + "')")
      public void create(final String owner, final WebAuthnAccount account) {
          AuthProfile profile = authProfileDAO.findByOwner(owner).orElseGet(() -> {
              AuthProfile authProfile = entityFactory.newEntity(AuthProfile.class);
              authProfile.setOwner(owner);
              return authProfile;
          });
          profile.setWebAuthnDeviceCredentials(account.getCredentials());
          authProfileDAO.save(profile);
      }
  
      @PreAuthorize("hasRole('" + IdRepoEntitlement.ANONYMOUS + "')")
      public void update(final String owner, final WebAuthnAccount account) {
         authProfileDAO.findByOwner(owner).ifPresent(profile -> {
             profile.setWebAuthnDeviceCredentials(account.getCredentials());
             authProfileDAO.save(profile);
         });
     }
 }