/*
    * 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.client.console.wizards.any;
  
  import java.util.ArrayList;
  import java.util.LinkedHashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.stream.Collectors;
  import org.apache.commons.collections4.CollectionUtils;
  import org.apache.syncope.client.console.rest.GroupRestClient;
  import org.apache.syncope.client.ui.commons.wizards.AjaxWizard;
  import org.apache.syncope.client.ui.commons.wizards.any.AnyWrapper;
  import org.apache.syncope.common.lib.Attr;
  import org.apache.syncope.common.lib.to.AnyTypeClassTO;
  import org.apache.syncope.common.lib.to.GroupTO;
  import org.apache.syncope.common.lib.to.MembershipTO;
  import org.apache.syncope.common.lib.to.SchemaTO;
  import org.apache.syncope.common.lib.to.TypeExtensionTO;
  import org.apache.wicket.WicketRuntimeException;
  import org.apache.wicket.core.util.lang.PropertyResolver;
  import org.apache.wicket.markup.head.IHeaderResponse;
  import org.apache.wicket.markup.head.OnDomReadyHeaderItem;
  import org.apache.wicket.model.IModel;
  import org.apache.wicket.model.util.ListModel;
  import org.apache.wicket.spring.injection.annot.SpringBean;
  
  public abstract class AbstractAttrs<S extends SchemaTO> extends AbstractAttrsWizardStep<S> {
  
      private static final long serialVersionUID = -5387344116983102292L;
  
      @SpringBean
      protected GroupRestClient groupRestClient;
  
      protected final IModel<List<MembershipTO>> memberships;
  
      protected final Map<String, Map<String, S>> membershipSchemas = new LinkedHashMap<>();
  
      public AbstractAttrs(
              final AnyWrapper<?> modelObject,
              final AjaxWizard.Mode mode,
              final List<String> anyTypeClasses,
              final List<String> whichAttrs) {
  
          super(modelObject.getInnerObject(), mode, anyTypeClasses, whichAttrs);
  
          this.memberships = new ListModel<>(List.of());
  
          this.setOutputMarkupId(true);
      }
  
      @SuppressWarnings("unchecked")
      private List<MembershipTO> loadMemberships() {
          membershipSchemas.clear();
  
          List<MembershipTO> membs = new ArrayList<>();
          try {
              ((List<MembershipTO>) PropertyResolver.getPropertyField("memberships", anyTO).get(anyTO)).forEach(memb -> {
                  setSchemas(memb.getGroupKey(),
                          anyTypeClassRestClient.list(getMembershipAuxClasses(memb, anyTO.getType())).
                                  stream().map(AnyTypeClassTO::getKey).collect(Collectors.toList()));
                  setAttrs(memb);
  
                  if (this instanceof PlainAttrs && !memb.getPlainAttrs().isEmpty()) {
                      membs.add(memb);
                  } else if (this instanceof DerAttrs && !memb.getDerAttrs().isEmpty()) {
                      membs.add(memb);
                  } else if (this instanceof VirAttrs && !memb.getVirAttrs().isEmpty()) {
                      membs.add(memb);
                  }
              });
          } catch (WicketRuntimeException | IllegalArgumentException | IllegalAccessException ex) {
              // ignore
          }
  
          return membs;
      }
  
      private void setSchemas(final String membership, final List<String> anyTypeClasses) {
          final Map<String, S> mscs;
  
          if (membershipSchemas.containsKey(membership)) {
              mscs = membershipSchemas.get(membership);
         } else {
             mscs = new LinkedHashMap<>();
             membershipSchemas.put(membership, mscs);
         }
         setSchemas(anyTypeClasses, mscs);
     }
 
     protected List<String> getMembershipAuxClasses(final MembershipTO membershipTO, final String anyType) {
         try {
             GroupTO groupTO = groupRestClient.read(membershipTO.getGroupKey());
             return groupTO.getTypeExtension(anyType).
                     map(TypeExtensionTO::getAuxClasses).
                     orElse(List.of());
         } catch (Exception e) {
             return List.of();
         }
     }
 
     protected abstract void setAttrs(MembershipTO membershipTO);
 
     protected abstract List<Attr> getAttrsFromTO(MembershipTO membershipTO);
 
     @Override
     public void renderHead(final IHeaderResponse response) {
         super.renderHead(response);
         if (CollectionUtils.isEmpty(attrs.getObject()) && CollectionUtils.isEmpty(memberships.getObject())) {
             response.render(OnDomReadyHeaderItem.forScript(
                     String.format("$('#emptyPlaceholder').append(\"%s\"); $('#attributes').hide();",
                             getString("attribute.empty.list"))));
         }
     }
 
     @Override
     public boolean evaluate() {
         this.attrs.setObject(loadAttrs());
         this.memberships.setObject(loadMemberships());
         return !attrs.getObject().isEmpty() || !memberships.getObject().isEmpty();
     }
 }