/*
    * 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.Iterator;
  
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import org.apache.struts.action.ActionForm;
  import org.apache.struts.action.ActionForward;
  import org.apache.struts.action.ActionMapping;
  import org.apache.struts.action.ActionMessage;
  import org.apache.struts.action.ActionMessages;
  import org.apache.struts.actions.MappingDispatchAction;
  import org.seasar.tuigwaa.model.ModelService;
  import org.seasar.tuigwaa.model.core.TgwAttribute;
  import org.seasar.tuigwaa.model.core.TgwEntity;
  import org.seasar.tuigwaa.system.Constants;
  import org.seasar.tuigwaa.util.TgwContext;
  import org.seasar.tuigwaa.util.TgwPathResolver;
  import org.seasar.tuigwaa.view.EntityFormComponent;
  import org.seasar.tuigwaa.view.HtmlService;
  
  import com.isenshi.util.HtmlBuffer;
  import com.isenshi.util.ResourceUtils;
  
  public class DesignTemplateAction extends MappingDispatchAction {
  
  	private HtmlService htmlService;
  
  	private ModelService model;
  	
  	public void setHtmlService(HtmlService htmlService) {
  		this.htmlService = htmlService;
  	}
  
  	public void setModel(ModelService model) {
  		this.model = model;
  	}
  		
  	public ActionForward create(ActionMapping mapping, ActionForm form,
  			HttpServletRequest request, HttpServletResponse response)
  			throws Exception {
  		
  		//Get information
  		String entityName = request.getParameter(Constants.PARAM_ENTITY_NAME);
  		String siteName  = TgwContext.getSiteName();
  		String type = request.getParameter("type");
  		TgwEntity entity =	model.getEntity(siteName, entityName);
  		
  		//Proccess
  		String template = null;
  		if ("form".equals(type)) {
  			template = createFormTemplate(entity);
  		} else if("table".equals(type)){
  			template = createTableTemplate(entity);
  		} else{
  			template = "";
  		}
  		
  		//Prepare for next screen
  		DesignTemplateForm dform = new DesignTemplateForm("", type, entity
  				.getName(), template);
  		bindForm(request, dform, entity);
  		return mapping.findForward("success");
  	}
  
  	public ActionForward save(ActionMapping mapping, ActionForm form,
  			HttpServletRequest request, HttpServletResponse response)
  			throws Exception {
  
  //		Get information
  		DesignTemplateForm dform = (DesignTemplateForm) form;
  		String siteName = TgwContext.getSiteName();
  		String type = dform.getType();
  		String name = dform.getName();
  		String template = dform.getTemplate();
  		String tableName = dform.getTableName();
  
  
  		//Proccess
  		TgwEntity entity =	model.getEntity(siteName, tableName);
  		String path = TgwPathResolver.getTemplatePath(siteName, tableName,
  				type, name, null);
  		ResourceUtils.writeContent(path, template);
 
 		
 		//Prepare for next screen
 		ActionMessages msgs = new ActionMessages();
 		msgs.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage("msg.saved"));
 		saveMessages(request, msgs);
 		bindForm(request, dform, entity);
 		return mapping.findForward("success");
 	}
 
 	public ActionForward edit(ActionMapping mapping, ActionForm form,
 			HttpServletRequest request, HttpServletResponse response)
 			throws Exception {
 
 		//Get information
 		String templateName = request.getParameter(Constants.PARAM_TEMPLATE);
 		String entityName = request.getParameter(Constants.PARAM_ENTITY_NAME);
 		String type = request.getParameter("type");
 		String siteName = TgwContext.getSiteName();
 		
 		//Process
 		TgwEntity entity =	model.getEntity(siteName, entityName);
 		String path = TgwPathResolver.getTemplatePath(siteName, entityName,
 				type, templateName, null);
 		String content = ResourceUtils.readContent(path);
 		
 		//Prepare for next screen
 		DesignTemplateForm dform = new DesignTemplateForm(templateName, type,
 				entityName, content);
 		bindForm(request, dform, entity);
 		return mapping.findForward("success");
 	}
 
 	// [Start] ------------ Private Method -----------------
 
 	private void bindForm(HttpServletRequest request, DesignTemplateForm dform,
 			TgwEntity entity) {
 		dform.setEntity(entity);
 		request.setAttribute("designTemplateForm", dform);
 	}
 
 	private String createFormTemplate(TgwEntity entity) {
 		EntityFormComponent formComponent = htmlService.createFormComponent(
 				entity, null);
 		formComponent.setNeedJavaScript(false);
 		formComponent.setJspTemplate(true);
 
 		//TODO カスタムフォームのときの formの名前と、onsubmit の関数
 		
 		String forwardPageName = "$!{bean.forwardPageName}";
 		formComponent.setForwardPageName(forwardPageName);
 		formComponent.setActionPath("${bean.actionPath}");
 		
 		return htmlService.toHtml(formComponent);
 	}
 
 	private String createTableTemplate(TgwEntity entity) {
 		HtmlBuffer buf = new HtmlBuffer();
 
 		buf.appendBody(ResourceUtils
 				.readContent("template/parts/tablemetadata.vm"));
 
 		buf.appendBodyLine("############################################"
 				+ "\n####  Table Data"
 				+ "\n############################################");
 
 		buf.appendStartTag("table");
 
 		buf.appendStartTag("thead");
 		buf.appendStartTag("tr");
 		Iterator itr = entity.getAllFieldList().iterator();
 		while (itr.hasNext()) {
 			TgwAttribute attr = (TgwAttribute) itr.next();
 			String displayName = attr.getDisplayName();
 			buf.appendTh(displayName);
 		}
 		buf.endTag(); // close tr
 		buf.endTag(); // close thead
 
 		buf.appendStartTag("tbody");
 
 		buf.appendBodyLine("#foreach ($elem in $bean.resultDataTable.dataList)");
 		buf.appendStartTag("tr");
 		itr = entity.getAllFieldList().iterator();
 		while (itr.hasNext()) {
 			TgwAttribute attr = (TgwAttribute) itr.next();
 			String name = attr.getName();
 			String test = "$elem." + name;
 			buf.appendTd(test);
 		}
 		buf.endTag();
 
 		buf.appendBodyLine("#end");
 
 		buf.endTag(); // close tbody
 		buf.endTag();// close table
 		buf.appendBody("");
 
 		return buf.toString();
 	}
 }