package org.jb.common.web.action;

import java.util.Iterator;
import java.util.List;

import javax.servlet.ServletContext;
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.DispatchAction;
import org.jb.y272.team0.biz.DictBiz;
import org.jb.y272.team0.biz.RoleBiz;
import org.jb.y272.team0.biz.UserBiz;
import org.jb.y272.team0.entity.SysRight;
import org.jb.y272.team0.entity.SysUser;

public class BaseAction extends DispatchAction {
	protected ActionMessages errors = new ActionMessages();
	protected void clearErrors(){
		errors.clear();
	}
	protected void SaveErrors(HttpServletRequest request){
		if (!errors.isEmpty()){
			super.saveErrors(request, errors);
		}
	}
	
	protected void AddError(String resKey){
		this.errors.add("ERROR_KEY",new ActionMessage(resKey));		
	}
	protected void AddError(String resKey,String msg){
		this.errors.add("ERROR_KEY", new ActionMessage(resKey,msg) );	
	}
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception{
		clearErrors();
		String errorCode = request.getParameter("error_code");
		if (null!=errorCode){
			AddError(errorCode);
		}
		ActionForward af = super.execute(mapping, form, request, response);
		SaveErrors(request);
		return af;
	}
	/**
	 * 得到所有可用角色
	 */
	protected List getRolesOptions(ServletContext application,RoleBiz roleBiz){				
		List ret = (List)application.getAttribute("ROLES_OPTIONS");
		if (null==ret){
			ret = roleBiz.getRolesInUse();
			application.setAttribute("ROLES_OPTIONS", ret);
		}
		return ret;
	}
	/**
	 * 得到所有可用用戶
	 */
	protected List getUsersOptions(ServletContext application,UserBiz userBiz){				
		List ret = (List)application.getAttribute("USERS_OPTIONS");
		if (null==ret){
			ret = userBiz.getList();
			application.setAttribute("USERS_OPTIONS", ret);
		}
		return ret;
	}
	protected List getDictsOptions(ServletContext application,DictBiz dictBiz,String type){				
		List ret = (List)application.getAttribute("DICTS_OPTIONS_"+type);
		if (null==ret){
			ret = dictBiz.getList(type);
			application.setAttribute("DICTS_OPTIONS_"+type, ret);
		}
		return ret;
	}
	/**
	 * 構建系統菜單
	 */
	protected void buildMenuString(HttpServletRequest request) {		
		SysUser user = (SysUser)request.getSession().getAttribute("USER");
		if (user!=null){
			StringBuffer sb = new StringBuffer();
			List rights = user.getUsrRole().getRights();
			Iterator it = rights.iterator();
			while(it.hasNext()){
				SysRight right = (SysRight)it.next();
				sb.append("\r\n");
				sb.append(right.getRightCode()).append(" = theMenu.addChild(")
				.append(right.getRightParentCode()).append(", \"")
				.append(right.getRightType()).append("\", \"")
				.append(right.getRightText()).append("\", \"")
				.append(right.getRightUrl()).append("\", \"")
				.append(right.getRightTip()).append("\");\r\n");
			}
			request.getSession().setAttribute("MENU_STRING", sb.toString());
		}
	}	
}