content: /*
   *  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.causeway.applib.fa;
  
  import java.util.Map;
  import java.util.Optional;
  
  import org.apache.causeway.applib.fa.FontAwesomeLayers.IconType;
  import org.apache.causeway.applib.layout.component.CssClassFaPosition;
  import org.apache.causeway.commons.internal.base._NullSafe;
  import org.apache.causeway.commons.internal.exceptions._Exceptions;
  import org.apache.causeway.commons.io.JsonUtils;
  
  import lombok.experimental.UtilityClass;
  
  @UtilityClass
  class FontAwesomeJsonParser {
  
      FontAwesomeLayers parse(final String json) {
          var map = JsonUtils.tryRead(Map.class, json)
                  .valueAsNonNullElseFail();
          var iconType = IconType.valueOf((String)map.get("iconType"));
          switch (iconType) {
          case STACKED:{
              final var stackBuilder = FontAwesomeLayers.stackBuilder()
                      .postition(Optional.ofNullable((String)map.get("postition"))
                              .map(CssClassFaPosition::valueOf)
                              .orElse(CssClassFaPosition.LEFT))
                      .containerCssClasses((String)map.get("containerCssClasses"))
                      .containerCssStyle((String)map.get("containerCssStyle"));
  
              _NullSafe.streamAutodetect(map.get("iconEntries"))
                  .map(Map.class::cast)
                  .forEach(iconEntryAsMap->{
                      stackBuilder.addIconEntry(
                              (String)iconEntryAsMap.get("cssClasses"),
                              (String)iconEntryAsMap.get("cssStyle"));
                  });
  
              return stackBuilder
                      .build();
          }
          default:
              throw _Exceptions.unmatchedCase(iconType);
          }
      }
  
  }
  