/*
    * 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.myfaces.extensions.validator.beanval.validation.message.interpolator;
  
  import org.apache.myfaces.extensions.validator.core.validation.message.resolver.MessageResolver;
  import org.apache.myfaces.extensions.validator.core.validation.message.resolver.AbstractValidationErrorMessageResolver;
  import org.apache.myfaces.extensions.validator.internal.UsageInformation;
  import org.apache.myfaces.extensions.validator.internal.UsageCategory;
  
  import javax.validation.MessageInterpolator;
  import java.util.Locale;
  
  /**
   * @since x.x.3
   */
  @UsageInformation(UsageCategory.INTERNAL)
  public class ExtValMessageInterpolatorAdapter extends DefaultMessageInterpolator
  {
      private MessageResolver messageResolver;
  
      public ExtValMessageInterpolatorAdapter(MessageInterpolator wrapped, MessageResolver messageResolver)
      {
          super(wrapped);
          this.messageResolver = messageResolver;
      }
  
      @Override
      public String interpolate(String messageOrKey, Context context)
      {
          return interpolate(messageOrKey, context, getCurrentLocale());
      }
  
      @Override
      public String interpolate(String messageOrKey, Context context, Locale locale)
      {
          if(this.messageResolver != null)
          {
              if(isBeanValidationMessageKeyFormat(messageOrKey))
              {
                  String newMessageOrKey = this.messageResolver.getMessage(extractKey(messageOrKey), getCurrentLocale());
  
                  if(isValideMessage(newMessageOrKey))
                  {
                      messageOrKey = newMessageOrKey;
                  }
              }
              else
              {
                  this.logger.finest("you tried to use an extval message-resolver for" +
                          "jsr303 validation with an invalid key -> using a default interpolator");
              }
          }
          return super.interpolate(messageOrKey, context, getCurrentLocale());
      }
  
      private boolean isBeanValidationMessageKeyFormat(String messageOrKey)
      {
          return messageOrKey.startsWith("{") && messageOrKey.endsWith("}");
      }
  
      private String extractKey(String messageOrKey)
      {
          return messageOrKey.substring(1, messageOrKey.length() - 1);
      }
  
      private boolean isValideMessage(String newMessageOrKey)
      {
          return !(newMessageOrKey.startsWith(AbstractValidationErrorMessageResolver.MISSING_RESOURCE_MARKER) &&
                          newMessageOrKey.endsWith(AbstractValidationErrorMessageResolver.MISSING_RESOURCE_MARKER));
      }
  }