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.camel.spring.boot.util;
  
  import java.util.ArrayList;
  import java.util.Arrays;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import org.springframework.boot.autoconfigure.condition.ConditionMessage;
  import org.springframework.boot.autoconfigure.condition.ConditionOutcome;
  import org.springframework.boot.autoconfigure.condition.SpringBootCondition;
  import org.springframework.context.annotation.ConditionContext;
  import org.springframework.core.annotation.AnnotationAttributes;
  import org.springframework.core.env.Environment;
  import org.springframework.core.type.AnnotatedTypeMetadata;
  import org.springframework.util.MultiValueMap;
  
  public class OnHierarchicalPropertiesCondition extends SpringBootCondition {
      @Override
      public ConditionOutcome getMatchOutcome(ConditionContext context, AnnotatedTypeMetadata metadata) {
          MultiValueMap<String, Object> attributes = metadata
                  .getAllAnnotationAttributes(ConditionalOnHierarchicalProperties.class.getName());
          List<String> values = new ArrayList<>();
  
          for (AnnotationAttributes attribute : annotationAttributesFromMultiValueMap(attributes)) {
              String[] vals = (String[]) attribute.get("value");
              if (vals != null) {
                  values.addAll(Arrays.asList(vals));
              }
          }
  
          if (values.isEmpty()) {
              return ConditionOutcome.match(ConditionMessage.forCondition("no condition").because("no conditions"));
          }
  
          final ConditionMessage.Builder message = ConditionMessage.forCondition(values.get(0));
          final Environment environment = context.getEnvironment();
  
          return HierarchicalPropertiesEvaluator.evaluate(environment, values)
                  ? ConditionOutcome.match(message.because("enabled"))
                  : ConditionOutcome.noMatch(message.because("not enabled"));
      }
  
      private List<AnnotationAttributes> annotationAttributesFromMultiValueMap(
              MultiValueMap<String, Object> multiValueMap) {
          List<Map<String, Object>> maps = new ArrayList<>();
          multiValueMap.forEach((key, value) -> {
              for (int i = 0; i < value.size(); i++) {
                  Map<String, Object> map;
                  if (i < maps.size()) {
                      map = maps.get(i);
                  } else {
                      map = new HashMap<>();
                      maps.add(map);
                  }
                  map.put(key, value.get(i));
              }
          });
          List<AnnotationAttributes> annotationAttributes = new ArrayList<>(maps.size());
          for (Map<String, Object> map : maps) {
              annotationAttributes.add(AnnotationAttributes.fromMap(map));
          }
          return annotationAttributes;
      }
  }
  