/*
    * 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.commons.validator;
  
  import java.lang.reflect.InvocationTargetException;
  import java.lang.reflect.Method;
  import java.text.ParseException;
  
  import com.sun.facelets.FaceletContext;
  import com.sun.facelets.tag.MetaRule;
  import com.sun.facelets.tag.Metadata;
  import com.sun.facelets.tag.MetadataTarget;
  import com.sun.facelets.tag.TagAttribute;
  import com.sun.facelets.tag.TagAttributeException;
  
  public class _DateRestrictionRule extends MetaRule
  {
      final static class DateRestrictionMetadata extends Metadata {
  
          private final String name;
  
          private final TagAttribute attr;
  
          private final Method method;
          
          private final Class type;
          
          private Object[] value;
  
          public DateRestrictionMetadata(String name, Method method, Class type,
                  TagAttribute attr) {
              this.name = name;
              this.attr = attr;
              this.method = method;
              this.type = type;
          }
          
          @Override
          public void applyMetadata(FaceletContext ctx, Object instance)
          {
              if (this.attr.isLiteral())
              {
                  try
                  {
                      if (value == null) {
                          value = new Object[] { 
                                  org.apache.myfaces.commons.util.TagUtils.getStringArray(
                                          ctx.getExpressionFactory().coerceToType(
                                                  this.attr.getValue(), 
                                                  String.class)
                                  ) };
                      }
                      try {
                          method.invoke(instance, this.value);
                      } catch (InvocationTargetException e) {
                          throw new TagAttributeException(this.attr, e.getCause());
                      } catch (Exception e) {
                          throw new TagAttributeException(this.attr, e);
                      }
                  }
                  catch(ParseException e)
                  {
                      throw new TagAttributeException(this.attr, e);
                  }
              }
              else
              {
                  ((ValidatorBase) instance).setValueExpression(this.name, this.attr
                          .getValueExpression(ctx, this.type));
              }
          }
          
      }
      
      public final static _DateRestrictionRule Instance = new _DateRestrictionRule();
      
      public _DateRestrictionRule()
      {
          super();
      }
  
      @Override
      public Metadata applyRule(String name, TagAttribute attribute,
             MetadataTarget meta)
     {
         if (meta.isTargetInstanceOf(DateRestrictionValidator.class)) {
             
             if ("invalidMonths".equals(name) || "invalidDaysOfWeek".equals(name))
             {
                 Method m = meta.getWriteMethod(name);
                 Class type = meta.getPropertyType(name);
                 if (type == null) {
                     type = Object.class;
                 }
                 return new DateRestrictionMetadata(name, m, type, attribute);
             }
         }
         return null;
     }
 
 }