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.core.config.util;
  
  import java.util.List;
  import java.util.Map;
  import java.util.function.Supplier;
  
  import org.apache.causeway.commons.internal.base._Strings;
  
  import lombok.experimental.UtilityClass;
  
  @UtilityClass
  public class ValueMaskingUtil {
  
      private static final List<String> PROTECTED_KEYS =
              List.of("password", "passkey", "apiKey", "authToken", "secret");
  
      public static Map<String, String> maskIfProtected(
              final Map<String, String> inMap,
              final Supplier<Map<String, String>> mapFactory) {
          final Map<String, String> result = mapFactory.get();
  
          inMap.forEach((k, v)->{
              result.put(k, maskIfProtected(k, v));
          });
  
          return result;
      }
  
      public static String maskIfProtected(final String key, final String value) {
          return isProtected(key) ? "********" : value;
      }
  
      static boolean isProtected(final String key) {
          if(_Strings.isNullOrEmpty(key)) {
              return false;
          }
          final String toLowerCase = key.toLowerCase();
          for (String protectedKey : PROTECTED_KEYS) {
              if(toLowerCase.contains(protectedKey.toLowerCase())) {
                  return true;
              }
          }
          return false;
      }
  
  }
  