/*
 * Copyright 2004-2007 IDCA. 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, this list of conditions and
 *        the following disclaimer.
 *    2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions
 *        and the following disclaimer in the documentation and/or other materials provided with the
 *        distribution.
 * 
 * THIS SOFTWARE IS PROVIDED BY IDCA 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 IDCA 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.
 * 
 * The views and conclusions contained in the software and documentation are those of the authors and
 * should not be interpreted as representing official policies, either expressed or implied, of IDCA.
 */

package com.idcanet.vasc.impl;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;

import org.hibernate.validator.ClassValidator;
import org.hibernate.validator.InvalidValue;

import com.idcanet.vasc.annotations.VascAnnotationParser;
import com.idcanet.vasc.core.VascEntry;
import com.idcanet.vasc.core.VascEntryField;
import com.idcanet.vasc.core.VascFrontendHelper;
import com.idcanet.vasc.core.entry.VascEntryEventListener;
import com.idcanet.vasc.core.entry.VascEntryEventListener.VascEventType;


/**
 * 
 * @author Willem Cazander
 * @version 1.0 Apr 28, 2007
 */
public class DefaultVascFrontendHelper implements VascFrontendHelper  {

	private Logger logger = null;
	//private List<VascEventListener> eventListeners = null;
	//private List<VascExceptionListener> exceptionListeners = null;
	
	public DefaultVascFrontendHelper() {
		logger = Logger.getLogger(DefaultVascFrontendHelper.class.getName());
		//eventListeners = new ArrayList<VascEventListener>(2);
		//exceptionListeners = new ArrayList<VascExceptionListener>(2);
	}

	/**
	 * @see com.idcanet.vasc.core.VascFrontendHelper#addEventListener(com.idcanet.vasc.core.entry.VascEntryEventListener)
	 */
	public void addEventListener(VascEntryEventListener e) {
		// TODO Auto-generated method stub
	}

	/**
	 * @see com.idcanet.vasc.core.VascFrontendHelper#addExceptionListener(com.idcanet.vasc.core.entry.VascEntryEventListener)
	 */
	public void addExceptionListener(VascEntryEventListener listener) {	
	}

  	/**
	 * @see com.idcanet.vasc.core.VascFrontendHelper#fireVascEvent(com.idcanet.vasc.core.entry.VascEntryEventListener.VascEventType, java.lang.Object)
	 */
	public void fireVascEvent(VascEventType type, Object data) {

	}

	/**
	 * @see com.idcanet.vasc.core.VascFrontendHelper#getTotalColumnsWidth(com.idcanet.vasc.core.VascEntry)
	 */
	public Integer getTotalColumnsWidth(VascEntry entry) {
    	int result = 0;
    	for(VascEntryField c:entry.getVascEntryFields()) {
    		if(c.getSizeList()==null) {
    			Logger.getLogger(VascEntry.class.getName()).finer("Column no size: "+c.getName());
    		} else {
    			result+=c.getSizeList();
    		}
    	}
    	return result;
	}

	/**
	 * @see com.idcanet.vasc.core.VascFrontendHelper#handleException(java.lang.Exception, com.idcanet.vasc.core.VascEntry)
	 */
	public void handleException(Exception e, VascEntry table) {
		
		e.printStackTrace();
		
		/*
		if (exceptionListeners.isEmpty()) {
			Logger.getLogger(DefaultVascTableController.class.getName()).log(Level.WARNING,e.getMessage(),e);
			return;
		}
		for(VascExceptionListener ee:exceptionListeners) {
			try {
				ee.handleException(e, table);
			} catch (Exception eee) {
				Logger.getLogger(DefaultVascTableController.class.getName()).log(Level.WARNING,"Error in ExceptionListener: "+eee.getMessage(),eee);				
			}
		}	
		*/
	}

	/**
	 * @see com.idcanet.vasc.core.VascFrontendHelper#initEditObject(com.idcanet.vasc.core.VascEntry, java.lang.Object)
	 */
	public Object initEditObject(VascEntry entry, Object object) throws Exception {
		if (object!=null) {
			return object;
		}
	    object = entry.getVascFrontendData().getVascBackend().provideVascEntryRecordCreator(entry).newRecord(entry);
	    //fireVascEvent(VascEventListener.VascEventType.BEAN_INIT, object);
		return object;
	}

	/**
	 * @see com.idcanet.vasc.core.VascFrontendHelper#initEditObjectColumn(com.idcanet.vasc.core.VascEntryField, java.lang.Object)
	 */
	public void initEditObjectColumn(VascEntryField field, Object bean) throws Exception {
    	Object value = field.getVascEntryFieldValue().getValue(field, bean);
        if(value==null & field.getDefaultValue()!=null) {
            try {
                logger.finer("Setting default value for: "+field.getName()+" def: "+field.getDefaultValue());
                field.getVascEntryFieldValue().setValue(field, bean, field.getDefaultValue());
            } catch (Exception e) {
                logger.log(Level.WARNING,"Error in setting default value: '"+field.getDefaultValue()+"' error: "+e.getMessage(),e);
            }
        }
	}

	/**
	 * @see com.idcanet.vasc.core.VascFrontendHelper#mergeObject(com.idcanet.vasc.core.VascEntry, java.lang.Object)
	 */
	public Object mergeObject(VascEntry entry, Object object) {
		Object result = null;
		 try {            
			 object = entry.getVascFrontendData().getVascBackend().merge(object);
			 //fireVascEvent(VascEventListener.VascEventType.BEAN_MERGE,object);
				// todo: make faster
	        	// add to table at position old old object
	        	// then remove old object
	        	// send refresh
	        	
			 refreshData(entry);
		 } catch (Exception e) {
			 handleException(e, entry);
		 }
		 return result;
	}

	/**
	 * @see com.idcanet.vasc.core.VascFrontendHelper#refreshData(com.idcanet.vasc.core.VascEntry)
	 */
	public void refreshData(VascEntry entry) throws Exception {
		entry.getVascFrontendData().setEntryDataObject(null);
		entry.getVascFrontendData().setEntryDataList(entry.getVascFrontendData().getVascBackend().execute());
		//fireVascEvent(VascEventListener.VascEventType.DATA_UPDATE, null);
	}

	/**
	 * @see com.idcanet.vasc.core.VascFrontendHelper#removeEventListener(com.idcanet.vasc.core.entry.VascEntryEventListener)
	 */
	public void removeEventListener(VascEntryEventListener e) {
		// TODO Auto-generated method stub
		
	}

	/**
	 * @see com.idcanet.vasc.core.VascFrontendHelper#removeExceptionListener(com.idcanet.vasc.core.entry.VascEntryEventListener)
	 */
	public void removeExceptionListener(VascEntryEventListener listener) {
		// TODO Auto-generated method stub
		
	}

	/**
	 * @see com.idcanet.vasc.core.VascFrontendHelper#setUIComponentsBeanErrors(com.idcanet.vasc.core.VascEntry, java.lang.Object)
	 */
	public boolean setUIComponentsBeanErrors(VascEntry entry, Object bean) {
		boolean error = false;
		if(bean==null) {
			logger.finest("No bean to check.");
			return true; // nothing to check
		}
		
        ClassValidator val = new ClassValidator(bean.getClass());
        InvalidValue[] ival = val.getInvalidValues(bean);
        logger.fine("Got invaliled value: "+ival.length);

        for(VascEntryField col:entry.getVascEntryFields()) {
        	/*
			if(col.getVascUIComponent()==null) {
				continue; // we only DISPLAY user input errors !!
			}
			if (col instanceof VascAnnotationTableColumn) {
				VascAnnotationTableColumn column = (VascAnnotationTableColumn)col;
			
	            InvalidValue iv = findInvalidValueByProperty(ival,column.getBeanProperty());
	            if(iv==null) {
	            	column.getVascUIComponent().setErrorText(null);
	                continue; // no error on this property
	            }
	            error = true;	            
	            column.getVascUIComponent().setErrorText(iv.getMessage());
			}
			*/
		}
        logger.finest("Checked for errors: "+error);
		return error;
	}
    private InvalidValue findInvalidValueByProperty(InvalidValue[] ival,String property) {
        for(InvalidValue iv:ival) {
            if(iv.getPropertyName().equals(property)) {
                return iv;
            }
        }
        return null;
    }
	
	/*
	public void finalizeVascColumns(VascTable table) throws Exception {
		VascAnnotationParser vap = new VascAnnotationParser();
		
		for(VascTableColumn c:table.getTableColumns()) {
			if (c instanceof VascAnnotationTableColumn) {
				VascAnnotationTableColumn column = (VascAnnotationTableColumn)c;
				
				if (c.getName()==null) {
					c.setName(vap.getVascNameKey(table.getVascRecordCreator().getObjectClass(), column.getBeanProperty()));
				}
				if (c.getToolTip()==null) {
					c.setToolTip(vap.getVascToolTipKey(table.getVascRecordCreator().getObjectClass(), column.getBeanProperty()));
				}
				if (c.getDefaultValue()==null) {
					c.setDefaultValue(vap.getVascDefaultValue(table.getVascRecordCreator().getObjectClass(), column.getBeanProperty()));
				}
				if (c.getWidth()==null) {
					Object obj = vap.getVascColumnWidth(table.getVascRecordCreator().getObjectClass(), column.getBeanProperty());
					if (obj instanceof Integer) {
						c.setWidth((Integer)obj);
					}
					c.setWidth(100);
					// get KEY
				}
				if (c.getHelpId()==null) {
					c.setHelpId(vap.getVascHelpId(table.getVascRecordCreator().getObjectClass(), column.getBeanProperty()));
				}
				if (c.getVascColumnValue()==null) {
					c.setVascColumnValue(new BeanPropertyVascColumnValue(column.getBeanProperty()));
				}
				if (c.getImage()==null) {
					c.setImage(vap.getVascImage(table.getVascRecordCreator().getObjectClass(),column.getBeanProperty()));
				}
			}
			if (c.getVascUIComponent()==null) {
				if (c.getDefaultValue() instanceof Boolean) {
					c.setVascUIComponent(new VascToggle());
				} else if (c.getDefaultValue() instanceof Date) {
						c.setVascUIComponent(new VascDate());
				} else {
					c.setVascUIComponent(new VascTextField());
				}
			}
			if (c.getVascColumnRenderer()==null) {
				//c.setVascColumnRenderer(new DefaultVascColumnRenderer());
			}
		}
	}


	public void addEventListener(VascEventListener e) {
		eventListeners.add(e);
	}
	public void removeEventListener(VascEventListener e) {
		eventListeners.remove(e);
	}
	
	public void fireVascEvent(VascEventListener.VascEventType type,Object data) {
		for(VascEventListener e:eventListeners) {
			e.vascEvent(type, data);
		}
	}
	

	public void addExceptionListener(VascExceptionListener listener) {
		exceptionListeners.add(listener);
	}
	
	public void removeExceptionListener(VascExceptionListener listener) {
		exceptionListeners.remove(listener);
	}
	*/
}