/**
    * 2007, Digitalis Informatica. All rights reserved. Distribuicao e Gestao de Informatica, Lda. Estrada de Paco de Arcos
    * num.9 - Piso -1 2780-666 Paco de Arcos Telefone: (351) 21 4408990 Fax: (351) 21 4408999 http://www.digitalis.pt
    */
   package pt.digitalis.dif.dem.objects.parameters.constraints.impl.date;
   
   import java.text.ParseException;
   import java.util.ArrayList;
   import java.util.Date;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import pt.digitalis.dif.dem.interfaces.IStageInstance;
  import pt.digitalis.dif.dem.objects.parameters.constraints.AbstractParameterConstraint;
  import pt.digitalis.utils.common.DateUtils;
  
  /**
   * Date parameter constraint implementation
   * 
   * @author Pedro Viegas <a href="mailto:pviegas@digitalis.pt">pviegas@digitalis.pt</a>
   * @created Nov 19, 2007
   */
  public class ParameterConstraintDateImpl extends AbstractParameterConstraint {
  
      /** Supported classes by numeric constraints */
      @SuppressWarnings("serial")
      final static private List<String> suportedClasses = new ArrayList<String>() {
  
          {
              add(Date.class.getCanonicalName());
          }
      };
  
      /** Last tested value */
      String lastTestedValue;
  
      /**
       * @see pt.digitalis.dif.dem.objects.parameters.constraints.IParameterConstraint#configureConstraint(java.lang.String)
       */
      public void configureConstraint(String configurationString)
      {
          // Nothing to do. No parameters to parse.
      }
  
      /**
       * @see pt.digitalis.dif.dem.objects.parameters.constraints.AbstractParameterConstraint#getErrorMessageValues(boolean)
       */
      @Override
      protected Map<String, String> getErrorMessageValues(boolean parseValues)
      {
          Map<String, String> substitutions = new HashMap<String, String>();
  
          if (parseValues)
          {
              substitutions.put("value", lastTestedValue);
          }
  
          return substitutions;
      }
  
      /**
       * @see pt.digitalis.dif.dem.objects.parameters.constraints.IParameterConstraint#getJavaScriptValidationCondition()
       */
      public String getJavaScriptValidationCondition()
      {
          return "Ext.Date.parse(value,'d/m/Y', true) != undefined";
      }
  
      /**
       * @see pt.digitalis.dif.dem.objects.parameters.constraints.IParameterConstraint#isSupportedClass(java.lang.Class)
       */
      public boolean isSupportedClass(Class<?> clazz)
      {
          return suportedClasses.contains(clazz.getCanonicalName());
      }
  
      /**
       * @see pt.digitalis.dif.dem.objects.parameters.constraints.AbstractParameterConstraint#validateConstraint(java.lang.Object,
       *      pt.digitalis.dif.dem.interfaces.IStageInstance)
       */
      @Override
      public boolean validateConstraint(Object value, IStageInstance stageInstance)
      {
  
          if (value == null)
              return this.validateConstraint((String) null, stageInstance);
          else if (value instanceof Date)
              return true;
          else if (value instanceof String)
              return this.validateConstraint(value.toString(), stageInstance);
          else
              return false;
      }
  
      /**
       * @see pt.digitalis.dif.dem.objects.parameters.constraints.IParameterConstraint#validateConstraint(java.lang.String,
       *      pt.digitalis.dif.dem.interfaces.IStageInstance)
       */
     public boolean validateConstraint(String value, IStageInstance stageInstance)
     {
         lastTestedValue = value;
 
         if (value == null)
             return true;
         else
             try
             {
                 DateUtils.stringToSimpleDate(value);
                 return true;
 
             }
             catch (ParseException e)
             {
                 return false;
             }
             catch (NumberFormatException e)
             {
                 return false;
             }
     }
 }