package com.yhcms.manage.note.action;

import java.io.UnsupportedEncodingException;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.log4j.Logger;
import org.apache.struts.action.Action;
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 com.yhcms.db.DBConnException;
import com.yhcms.manage.page.Pages;
import com.yhcms.note.dao.NoteDaoIm;
import com.yhcms.note.itface.NoteDao;
import com.yhcms.utils.ReqUtils;
/**
 * <p>Title:系統(tǒng)后臺(tái)留言管理Action</p>
 * <li>取得系統(tǒng)的所有留言列表</li>
 * <br><b>CopyRight: yyhweb[由由華網(wǎng)]</b>
 * @author stephen
 * @version YH-2.0
 */
public class NoteMag extends Action {
	public ActionForward execute(ActionMapping actionmapping,ActionForm form,
			 HttpServletRequest request,HttpServletResponse response) throws UnsupportedEncodingException{
		
			Logger yhlog = Logger.getLogger(NoteMag.class.getName());
			ActionMessages errors = new ActionMessages();
			
			String info = "";
			int anId = 0;
			int curPage = 0;
			int pageSize = 20;    // pagesize 可以由管理員再后臺(tái)定義，此處有待改善
			int begin = 0;       //  開(kāi)始查詢(xún)的位置
			info = ReqUtils.getString(request,"info"); 
			anId = ReqUtils.getInt(request,"nId");
			curPage = ReqUtils.getInt(request,"curPage");  // 當(dāng)前頁(yè)數(shù)
			
			List nList = null;
			int total = 0;       //    留言總數(shù)
			String link = "";	// 部分相同鏈接
			String pageInfo = "";//  分頁(yè)后得到的字符串結(jié)果
			Pages pages = null;
			NoteDao ndao = NoteDaoIm.getInstance();
			
			if(curPage>1){      // 如果不是第一頁(yè)，則從該頁(yè)的第一條開(kāi)始
				begin = (curPage-1)*pageSize;
			}
			
			try {
				// 刪除留言
				if(info.equals("delete")){
					if(anId>0){
						if(ndao.delNote(anId)){	// 刪除留言成功
							return actionmapping.findForward("DeleteOk");
						}
					}
					// 刪除留言出錯(cuò)或者artId<=0的話,記錄一個(gè)錯(cuò)誤.
					yhlog.info("Delete a note successfully.");
					errors.add("admin.note.del.fail",new ActionMessage("admin.note.del.fail"));
					saveErrors(request,errors);
					return actionmapping.findForward("Success");	
					
				}
				// 更新留言
				if(info.equals("answer")){
					if(anId>0){
						// nId由URL傳到下一個(gè)畫(huà)面
						return actionmapping.findForward("Answer");
					}
					//	更新留言出錯(cuò)或者artId<=0的話,記錄一個(gè)錯(cuò)誤.
					yhlog.info("Answer a note unsuccessfully.");
					errors.add("admin.note.answer.fail",new ActionMessage("admin.note.answer.fail"));
					saveErrors(request,errors);
					return actionmapping.findForward("Success");
					
				}
				// 瀏覽所有留言
				link = "NoteMag.html?";
				total = ndao.getNoteNum();
				nList = ndao.getAllNoteDto(begin,pageSize);
				
				pages = new Pages(total,curPage,pageSize,link);
				pageInfo = pages.getPageInfo();
				
			} catch (DBConnException e) {
				yhlog.warn("Manage system note,throw an Exception!");
			}
			// 判斷分頁(yè)信息是否為空
			if((pageInfo==null) || (pageInfo.equals(""))){
				StringBuffer sb = new StringBuffer();
				sb.append("<table class='tab' width=100% height=100% cellSpacing=0 cellPadding=0>");
				sb.append("<tr><td>");
				sb.append("&nbsp;&nbsp;");
	 			sb.append("共");
	 			sb.append("<b style=font-size:10pt>");
	 			sb.append(1);
	 			sb.append("</b>");
	 			sb.append("頁(yè)&nbsp;&nbsp;");
	 			sb.append("<b style=font-size:10pt>");
	 			sb.append(total);
	 			sb.append("</b>");
	 			sb.append("個(gè)記錄&nbsp;&nbsp;");
	 			sb.append("</td></tr>");
	 			sb.append("<table>");
	 			pageInfo = sb.toString();
	 			sb = null;
			}
			request.setAttribute("noteList",nList);
			request.setAttribute("pageInfo",pageInfo);
			
			return actionmapping.findForward("Success");
	}
}