/*
    * 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.bootstrap.mapping;
  
  import java.util.HashSet;
  import org.apache.syncope.common.lib.policy.AttrReleasePolicyConf;
  import org.apache.syncope.common.lib.policy.AttrReleasePolicyTO;
  import org.apache.syncope.common.lib.policy.DefaultAttrReleasePolicyConf;
  import org.apereo.cas.authentication.principal.DefaultPrincipalAttributesRepository;
  import org.apereo.cas.authentication.principal.cache.AbstractPrincipalAttributesRepository;
  import org.apereo.cas.authentication.principal.cache.CachingPrincipalAttributesRepository;
  import org.apereo.cas.configuration.model.core.authentication.PrincipalAttributesCoreProperties.MergingStrategyTypes;
  import org.apereo.cas.services.AbstractRegisteredServiceAttributeReleasePolicy;
  import org.apereo.cas.services.ChainingAttributeReleasePolicy;
  import org.apereo.cas.services.DenyAllAttributeReleasePolicy;
  import org.apereo.cas.services.RegisteredServiceAttributeReleasePolicy;
  import org.apereo.cas.services.ReturnAllowedAttributeReleasePolicy;
  import org.apereo.cas.services.ReturnMappedAttributeReleasePolicy;
  import org.apereo.cas.services.consent.DefaultRegisteredServiceConsentPolicy;
  import org.apereo.cas.util.model.TriStateBoolean;
  
  public class DefaultAttrReleaseMapper implements AttrReleaseMapper {
  
      @Override
      public boolean supports(final AttrReleasePolicyConf conf) {
          return DefaultAttrReleasePolicyConf.class.equals(conf.getClass());
      }
  
      @Override
      public RegisteredServiceAttributeReleasePolicy build(final AttrReleasePolicyTO policy) {
          DefaultAttrReleasePolicyConf conf = (DefaultAttrReleasePolicyConf) policy.getConf();
  
          ReturnMappedAttributeReleasePolicy returnMapped = null;
          if (!conf.getReleaseAttrs().isEmpty()) {
              returnMapped = new ReturnMappedAttributeReleasePolicy();
              returnMapped.setAllowedAttributes(conf.getReleaseAttrs());
          }
  
          ReturnAllowedAttributeReleasePolicy returnAllowed = null;
          if (!conf.getAllowedAttrs().isEmpty()) {
              returnAllowed = new ReturnAllowedAttributeReleasePolicy();
              returnAllowed.setAllowedAttributes(conf.getAllowedAttrs());
          }
  
          AbstractRegisteredServiceAttributeReleasePolicy attributeReleasePolicy;
          if (returnMapped == null && returnAllowed == null) {
              attributeReleasePolicy = new DenyAllAttributeReleasePolicy();
          } else if (returnMapped != null) {
              attributeReleasePolicy = returnMapped;
          } else {
              attributeReleasePolicy = returnAllowed;
          }
  
          DefaultRegisteredServiceConsentPolicy consentPolicy = new DefaultRegisteredServiceConsentPolicy(
                  new HashSet<>(conf.getExcludedAttrs()), new HashSet<>(conf.getIncludeOnlyAttrs()));
          consentPolicy.setOrder(policy.getOrder());
          consentPolicy.setStatus(TriStateBoolean.fromBoolean(policy.getStatus()));
          attributeReleasePolicy.setConsentPolicy(consentPolicy);
  
          if (conf.getPrincipalIdAttr() != null) {
              attributeReleasePolicy.setPrincipalIdAttribute(conf.getPrincipalIdAttr());
          }
  
          if (conf.getPrincipalAttrRepoConf() != null && !conf.getPrincipalAttrRepoConf().getAttrRepos().isEmpty()) {
              DefaultAttrReleasePolicyConf.PrincipalAttrRepoConf parc = conf.getPrincipalAttrRepoConf();
  
              AbstractPrincipalAttributesRepository par = parc.getExpiration() > 0
                      ? new CachingPrincipalAttributesRepository(parc.getTimeUnit().name(), parc.getExpiration())
                      : new DefaultPrincipalAttributesRepository();
  
              par.setMergingStrategy(MergingStrategyTypes.valueOf(parc.getMergingStrategy().name()));
              par.setIgnoreResolvedAttributes(par.isIgnoreResolvedAttributes());
              par.setAttributeRepositoryIds(new HashSet<>(parc.getAttrRepos()));
              attributeReleasePolicy.setPrincipalAttributesRepository(par);
          }
  
          if (returnMapped != null && returnAllowed != null) {
              ChainingAttributeReleasePolicy chain = new ChainingAttributeReleasePolicy();
              chain.addPolicies(returnMapped, returnAllowed);
  
              if (conf.getPrincipalAttrRepoConf() != null && !conf.getPrincipalAttrRepoConf().getAttrRepos().isEmpty()) {
                  DefaultAttrReleasePolicyConf.PrincipalAttrRepoConf parc = conf.getPrincipalAttrRepoConf();
                  chain.setMergingPolicy(MergingStrategyTypes.valueOf(parc.getMergingStrategy().name()));
             }
 
             return chain;
         }
 
         return attributeReleasePolicy;
     }
 }