/*
    * Copyright (c) 2002-2014, Mairie de 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 fr.paris.lutece.portal.service.i18n.I18nService;
  
  import java.util.Locale;
  import java.util.Map;
  import java.util.Map.Entry;
  
  import javax.validation.ConstraintViolation;
  
  
  /**
   * ValidationError Utils
   */
  public final class ValidationErrorUtil
  {
      /**
       * Private constructor
       */
      private ValidationErrorUtil(  )
      {
          // Nothing to do
      }
  
      /**
       * Return the attribute's value to set as the value#1 of the message
       * @param constraintViolation The Constraint violation
       * @param config The config
       * @return The value
       */
      public static String getValue1( ConstraintViolation constraintViolation, ValidationErrorConfig config )
      {
          return getValue( constraintViolation, config, config.getValue1Attributes(  ) );
      }
  
      /**
       * Return the attribute's value to set as the value#2 of the message
       * @param constraintViolation The Constraint violation
       * @param config The config
       * @return The value
       */
      public static String getValue2( ConstraintViolation constraintViolation, ValidationErrorConfig config )
      {
          return getValue( constraintViolation, config, config.getValue2Attributes(  ) );
      }
  
      /**
       * Return the field name as it will appear in the message
       * @param constraintViolation The Constraint violation
       * @param config The config
       * @param locale The locale
       * @return The field name
       */
      public static String getFieldname( ConstraintViolation constraintViolation, ValidationErrorConfig config,
          Locale locale )
      {
          String strField = constraintViolation.getPropertyPath(  ).toString(  );
  
          // remove the variable prefix
          String[] prefix = config.getVariablesPrefix(  );
  
          for ( int i = 0; i < prefix.length; i++ )
          {
              strField = removePrefix( strField, prefix[i] );
          }
  
         // set first letter in lower case
         strField = strField.substring( 0, 1 ).toLowerCase(  ) + strField.substring( 1 );
 
         String strKey = config.getFieldKeysPrefix(  ) + strField;
 
         String strFieldName = I18nService.getLocalizedString( strKey, locale );
 
         // if the key isn't found
         if ( strFieldName.equals( "" ) )
         {
             // display the missing key as the field name
             strFieldName = "[" + strKey + "]";
         }
 
         strFieldName = config.getFieldWrapperBegin(  ) + strFieldName + config.getFieldWrapperEnd(  );
 
         return strFieldName;
     }
 
     /**
      * Remove the variable prefix
      * @param strSource The source
      * @param strPrefix The prefix
      * @return The string with the prefix removed
      */
     private static String removePrefix( String strSource, String strPrefix )
     {
         String strReturn = strSource;
 
         if ( strSource.startsWith( strPrefix ) )
         {
             strReturn = strSource.substring( strPrefix.length(  ) );
         }
 
         return strReturn;
     }
 
     /**
      * Return the attribute's value to set as value the of the message
      * @param constraintViolation The Constraint violation
      * @param config The config
      * @param strAttributes The attributes names list
      * @return The value
      */
     private static String getValue( ConstraintViolation constraintViolation, ValidationErrorConfig config,
         String strAttributes )
     {
         String strValue = "";
 
         Map<String, Object> mapAttributes = constraintViolation.getConstraintDescriptor(  ).getAttributes(  );
 
         for ( Entry<String, Object> entry : mapAttributes.entrySet(  ) )
         {
             if ( strAttributes.contains( entry.getKey(  ) ) )
             {
                 strValue = getValue( entry.getValue(  ) );
             }
         }
 
         return strValue;
     }
 
     /**
      * Convert an unkown type value to a String value
      * @param value The valus
      * @return The value as a String
      */
     private static String getValue( Object value )
     {
         if ( value instanceof Integer )
         {
             return Integer.toString( (Integer) value );
         }
 
         if ( value instanceof Long )
         {
             return Long.toString( (Long) value );
         }
 
         return (String) value;
     }
 }