/*
    * Copyright 2012-2021 CodeLibs Project and the Others.
    *
    * Licensed 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.codelibs.fess.validation;
  
  import javax.validation.ConstraintValidator;
  import javax.validation.ConstraintValidatorContext;
  
  import org.codelibs.core.lang.StringUtil;
  import org.codelibs.fess.mylasta.direction.FessConfig;
  import org.codelibs.fess.util.ComponentUtil;
  import org.hibernate.validator.constraintvalidation.HibernateConstraintValidatorContext;
  
  public class CustomSizeValidator implements ConstraintValidator<CustomSize, CharSequence> {
      private int min = 0;
      private int max = Integer.MAX_VALUE;
      private String message;
  
      @Override
      public void initialize(final CustomSize constraintAnnotation) {
          final FessConfig fessConfig = ComponentUtil.getFessConfig();
          final String minKey = constraintAnnotation.minKey();
          if (StringUtil.isNotBlank(minKey)) {
              min = Integer.parseInt(fessConfig.get(minKey));
          }
          final String maxKey = constraintAnnotation.maxKey();
          if (StringUtil.isNotBlank(maxKey)) {
              max = Integer.parseInt(fessConfig.get(maxKey));
          }
          message = constraintAnnotation.message();
          validateParameters();
      }
  
      @Override
      public boolean isValid(final CharSequence value, final ConstraintValidatorContext context) {
          if (value == null) {
              return true;
          }
  
          final HibernateConstraintValidatorContext hibernateContext = context.unwrap(HibernateConstraintValidatorContext.class);
          hibernateContext.disableDefaultConstraintViolation();
          hibernateContext.addMessageParameter("min", min).addMessageParameter("max", max).buildConstraintViolationWithTemplate(message)
                  .addConstraintViolation();
          final int length = value.length();
          return length >= min && length <= max;
      }
  
      private void validateParameters() {
          if (min < 0) {
              throw new IllegalArgumentException("The min parameter cannot be negative.");
          }
          if (max < 0) {
              throw new IllegalArgumentException("The max parameter cannot be negative.");
          }
          if (max < min) {
              throw new IllegalArgumentException("The length cannot be negative.");
          }
      }
  }