/*
 This file belongs to the Servoy development and deployment environment, Copyright (C) 1997-2013 Servoy BV

 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU Affero General Public License as published by the Free
 Software Foundation; either version 3 of the License, or (at your option) any
 later version.

 This program is distributed in the hope that it will be useful, but WITHOUT
 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.

 You should have received a copy of the GNU Affero General Public License along
 with this program; if not, see http://www.gnu.org/licenses or write to the Free
 Software Foundation,Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
 */

package com.servoy.j2db.server.ngclient.template;

import java.util.List;

import org.sablo.specification.WebComponentSpecProvider;

import com.servoy.j2db.BasicFormManager;
import com.servoy.j2db.IFormController;
import com.servoy.j2db.persistence.Form;
import com.servoy.j2db.persistence.IFormElement;
import com.servoy.j2db.persistence.Part;
import com.servoy.j2db.server.ngclient.DefaultNavigator;
import com.servoy.j2db.server.ngclient.FormElement;
import com.servoy.j2db.server.ngclient.FormElementContext;
import com.servoy.j2db.server.ngclient.FormElementHelper;
import com.servoy.j2db.server.ngclient.INGApplication;
import com.servoy.j2db.server.ngclient.IServoyDataConverterContext;
import com.servoy.j2db.server.ngclient.WebFormUI;
import com.servoy.j2db.server.ngclient.property.types.PropertyPath;
import com.servoy.j2db.util.Debug;
import com.servoy.j2db.util.Utils;

import freemarker.template.DefaultObjectWrapper;
import freemarker.template.TemplateModel;
import freemarker.template.TemplateModelException;

/**
 * Wrap some objects for form file generation using freemarker templates.
 *
 * @author rgansevles
 *
 */
public class FormTemplateObjectWrapper extends DefaultObjectWrapper implements IFormElementValidator
{
	private final IServoyDataConverterContext context;
	private final boolean useControllerProvider;
	private Form flattenedForm;
	private final boolean design;
	private final INGApplication application;

	/**
	 * @param fs
	 */
	public FormTemplateObjectWrapper(IServoyDataConverterContext context, boolean useControllerProvider, boolean design, INGApplication application)
	{
		this.context = context;
		this.useControllerProvider = useControllerProvider;
		this.design = design;
		this.application = application;
	}

	@Override
	public TemplateModel wrap(Object obj) throws TemplateModelException
	{
		Object wrapped;
		if (obj instanceof Form)
		{
			this.flattenedForm = context.getSolution().getFlattenedForm((Form)obj);
			wrapped = new FormWrapper(flattenedForm, null, useControllerProvider, this, context, design);
		}
		else if (obj instanceof Object[])
		{
			this.flattenedForm = context.getSolution().getFlattenedForm((Form)((Object[])obj)[0]);
			wrapped = new FormWrapper(flattenedForm, (String)((Object[])obj)[1], useControllerProvider, this, context, design);
		}
		else if (obj == DefaultNavigator.INSTANCE)
		{
			wrapped = new FormElement(DefaultNavigator.INSTANCE, context.getSolution(), new PropertyPath(), design);
		}
		else if (obj instanceof Part)
		{
			wrapped = new PartWrapper((Part)obj, flattenedForm, context, design);
		}
		else if (obj instanceof IFormElement)
		{
			FormElement fe = null;
			if (application != null)
			{
				IFormController controller = ((BasicFormManager)application.getFormManager()).getCachedFormController(flattenedForm.getName());
				if (controller != null && controller.getFormUI() instanceof WebFormUI)
				{
					List<FormElement> cachedFormElements = ((WebFormUI)controller.getFormUI()).getFormElements();
					for (FormElement cachedFE : cachedFormElements)
					{
						if (Utils.equalObjects(cachedFE.getPersistIfAvailable(), obj))
						{
							fe = cachedFE;
							break;
						}
					}
				}
			}
			wrapped = new FormElementContext(fe != null ? fe : FormElementHelper.INSTANCE.getFormElement((IFormElement)obj, context, null), context);
		}
		else
		{
			wrapped = obj;
		}
		return super.wrap(wrapped);
	}

	@Override
	public boolean isComponentSpecValid(IFormElement formElement)
	{
		String componentType = FormTemplateGenerator.getComponentTypeName(formElement);
		try
		{
			return WebComponentSpecProvider.getInstance().getWebComponentSpecification(componentType) != null;
		}
		catch (Exception re)
		{
			Debug.error(re);
		}
		return false;
	}
}