/*
    * Copyright 2004-2006 the Seasar Foundation 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.seasar.tuigwaa.controller;
  
  import java.util.Calendar;
  import java.util.Date;
  import java.util.Iterator;
  
  import org.apache.commons.beanutils.ConvertUtils;
  import org.seasar.tuigwaa.database.CriteriaFunctionFactory;
  import org.seasar.tuigwaa.database.function.UpdateExeFunction;
  import org.seasar.tuigwaa.model.common.EntityUtils;
  import org.seasar.tuigwaa.model.common.TgwAttributeVisitor;
  import org.seasar.tuigwaa.model.core.TgwAttribute;
  import org.seasar.tuigwaa.model.core.TgwEntity;
  import org.seasar.tuigwaa.model.core.impl.DateAttribute;
  import org.seasar.tuigwaa.util.TgwResource;
  import org.seasar.tuigwaa.util.ajax.AbstractRowSetForm;
  import org.seasar.tuigwaa.view.AttributeFormGenerateVisitor;
  
  import com.isenshi.util.HtmlBuffer;
  
  /***
   * 更新ルールを作成するフォームに対応
   * 
   * @author nishioka
   */
  public class UpdateRuleForm extends AbstractRowSetForm {
  
  	private static final long serialVersionUID = 3998751707571170768L;
  
  	private TgwEntity entity;
  
  	private String name;
  
  	public UpdateRuleForm(TgwEntity entity) {
  		this.entity = entity;
  	}
  
  	public UpdateRuleForm(TgwEntity entity, UpdateExeFunction function) {
  		this.entity = entity;
  		setName(function.getName());
  		Iterator itr = entity.getFieldIterator();
  		while (itr.hasNext()) {
  			TgwAttribute attr = (TgwAttribute) itr.next();
  			if (EntityUtils.isBuiltinAttribute(attr)
  					|| EntityUtils.oneToManyFlag(attr)) {
  				continue;
  			}
  			UpdateRuleRow row = new UpdateRuleRow(entity, attr);
  			Object updateValue = function.getUpdateValueMap().get(
  					row.getAttrName());
  			if (updateValue != null) {
  				if (attr instanceof DateAttribute) {
  					Calendar cal = Calendar.getInstance();
  					cal.setTime((Date) updateValue);
  
  					String values[] = { String.valueOf(cal.get(Calendar.YEAR)),
  							String.valueOf(cal.get(Calendar.MONTH) + 1),
  							String.valueOf(cal.get(Calendar.DAY_OF_MONTH)) };
  
  					row.setValues(values);
  				} else {
  					row.setValue(updateValue.toString());
  				}
  				addRow(row);
  			}
  
  		}
  	}
  
  	public TgwEntity getEntity() {
  		return entity;
  	}
  
  	public String getName() {
  		return name;
  	}
  
  	public void setName(String name) {
  		this.name = name;
  	}
  
  	public UpdateExeFunction getUpdateExeFunction() {
  		UpdateExeFunction function = CriteriaFunctionFactory
  				.createUpdateExeFunction(entity, getName());
 		for (Iterator i = getRowSet().iterator(); i.hasNext();) {
 			UpdateRuleRow row = (UpdateRuleRow) i.next();
 			String attrName = row.getAttrName();
 			Object value = row.getConvertedValue();
 			function.putUpdateValue(attrName, value);
 		}
 		return function;
 	}
 
 	protected void removeRow(int index, Object row) {
 		// do nothing
 	}
 
 	protected Object createNewRow() {
 		TgwAttribute attr = entity.getFirstNotFkField();
 		return new UpdateRuleRow(entity, attr);
 	}
 
 	protected Object createRow(int index, String value) {
 		TgwAttribute attr = entity.getField(value);
 		return new UpdateRuleRow(entity, attr);
 	}
 
 	protected String[] getHtmlData(int index, Object row) {
 		UpdateRuleRow itm = (UpdateRuleRow) row;
 		return itm.getHtml(index);
 	}
 
 	public static class UpdateRuleRow {
 
 		private TgwEntity entity;
 
 		private TgwAttribute attr;
 
 		private String value;
 
 		private String[] values;
 
 		public UpdateRuleRow(TgwEntity entity, TgwAttribute attr) {
 			this.entity = entity;
 			this.attr = attr;
 		}
 
 		protected String createRemoveButton(int index) {
 			return createRemoveButtonHtml(index, TgwResource
 					.getMessage("button.remove"));
 		}
 
 		public String[] getHtml(int index) {
 			TgwAttributeVisitor visitor = AttributeFormGenerateVisitor.DEFAULT_INSTANCE;
 			String elemName = getPrefix(index) + "value";
 			if (attr instanceof DateAttribute) {
 				elemName += "s";
 			}
 			String form = (String) attr.accept(visitor, elemName);
 
 			if (attr instanceof DateAttribute) {
 				form = FormValueSetter.getInstance().parseDate(form, elemName,
 						getValues());
 			} else {
 				form = FormValueSetter.getInstance().parse(form, elemName,
 						getValue());
 			}
 
 			return new String[] { getFieldHtml(index), form + createRemoveButton(index) };
 		}
 
 		public void setValue(String value) {
 			this.value = value;
 		}
 
 		public String getValue() {
 			return value;
 		}
 
 		public String getAttrName() {
 			return attr.getName();
 		}
 
 		public String[] getValues() {
 			return values;
 		}
 
 		public void setValues(String[] values) {
 			this.values = values;
 		}
 
 		public Object getConvertedValue() {
 			Class targetClass = EntityUtils.toJavaClass(attr);
 			if (attr instanceof DateAttribute) {
 				Calendar cal = Calendar.getInstance();
 				cal.set(Integer.parseInt(getValues()[0]), Integer
 						.parseInt(getValues()[1]) - 1, Integer
 						.parseInt(getValues()[2]), 0, 0, 0);
 				return cal.getTime();
 			}
 			return ConvertUtils.convert(getValue(), targetClass);
 		}
 
 		private final String getFieldHtml(int index) {
 			HtmlBuffer buf = new HtmlBuffer();
 			buf.appendStartTag("select");
 			buf.appendAttribute("name", getPrefix(index) + "fieldName");
 			bindTypeEvent(buf);
 
 			Iterator itr = entity.getAllFieldList().iterator();
 
 			while (itr.hasNext()) {
 				TgwAttribute anAttr = (TgwAttribute) itr.next();
 				buf.appendOption(anAttr.getDisplayName(), anAttr.getName(),
 						attr.getName());
 			}
 
 			buf.endTag();
 			return buf.toString();
 		}
 
 	}
 }