/*
    * Copyright (c) 2002-2022, City of Paris
    * All rights reserved.
    *
    * Redistribution and use in source and binary forms, with or without
    * modification, are permitted provided that the following conditions
    * are met:
    *
    *  1. Redistributions of source code must retain the above copyright notice
   *     and the following disclaimer.
   *
   *  2. Redistributions in binary form must reproduce the above copyright notice
   *     and the following disclaimer in the documentation and/or other materials
   *     provided with the distribution.
   *
   *  3. Neither the name of 'Mairie de Paris' nor 'Lutece' nor the names of its
   *     contributors may be used to endorse or promote products derived from
   *     this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGE.
   *
   * License 1.0
   */
  package fr.paris.lutece.util.beanvalidation;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Locale;
  import java.util.Set;
  
  import javax.validation.ConstraintViolation;
  import javax.validation.Validation;
  import javax.validation.Validator;
  import javax.validation.ValidatorFactory;
  
  /**
   * BeanValidationUtils validates beans using JSR303 annotations.
   *
   * @see #validate(Object)
   */
  public final class BeanValidationUtil
  {
      /**
       * Validator (JSR 303) is thread safe.
       */
      private static final Validator VALIDATOR;
  
      static
      {
          // initialize the validator
          ValidatorFactory factory = Validation.buildDefaultValidatorFactory( );
          VALIDATOR = factory.getValidator( );
      }
  
      /**
       * Utility class
       */
      private BeanValidationUtil( )
      {
          // nothing
      }
  
      /**
       * Validates a bean.
       *
       * @param <T>
       *            the bean type
       * @param bean
       *            the bean to validate
       * @return the sets the
       */
      public static <T> Set<ConstraintViolation<T>> validate( T bean )
      {
          return VALIDATOR.validate( bean );
      }
  
      /**
       * Use this in case you need more than a global validation
       *
       * @return the validator
       */
      public static Validator getValidator( )
      {
          return VALIDATOR;
      }
  
      /**
       * Validate a bean
       * 
      * @param <T>
      *            The bean class
      * @param bean
      *            The bean
      * @param locale
      *            The locale
      * @param strFieldKeysPrefix
      *            The fields keys prefix in the resource file
      * @return A list of errors
      */
     public static <T> List<ValidationError> validate( T bean, Locale locale, String strFieldKeysPrefix )
     {
         DefaultValidationErrorConfigdationErrorConfig.html#DefaultValidationErrorConfig">DefaultValidationErrorConfig config = new DefaultValidationErrorConfig( );
         config.setFieldKeysPrefix( strFieldKeysPrefix );
 
         return validate( bean, locale, config );
     }
 
     /**
      * Validate a bean
      * 
      * @param <T>
      *            The bean class
      * @param bean
      *            The bean
      * @param locale
      *            The locale
      * @param config
      *            The config for validation errors rendering
      * @return A list of errors
      */
     public static <T> List<ValidationError> validate( T bean, Locale locale, ValidationErrorConfig config )
     {
         List<ValidationError> list = new ArrayList<>( );
         Set<ConstraintViolation<T>> setViolation = validate( bean );
 
         for ( ConstraintViolation<T> cv : setViolation )
         {
             list.add( new ValidationError( cv, locale, config ) );
         }
 
         return list;
     }
 }