package com.wishwzp.dao;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.List;

import com.wishwzp.model.Diary;
import com.wishwzp.model.PageBean;
import com.wishwzp.util.DateUtil;
import com.wishwzp.util.StringUtil;

public class DiaryDao {

	/**
	 * 日记列表
	 * @param con
	 * @param pageBean
	 * @return
	 * @throws Exception
	 */
	public List<Diary> diaryList(Connection con,PageBean pageBean,Diary s_diary)throws Exception{
		List<Diary> diaryList=new ArrayList<Diary>();
		StringBuffer sb=new StringBuffer("select * from t_diary t1,t_diaryType t2 where t1.typeId=t2.diaryTypeId ");
		
		if(s_diary.getTypeId()!=-1){
			sb.append(" and t1.typeId="+s_diary.getTypeId());
		}
		if(StringUtil.isNotEmpty(s_diary.getReleaseDateStr())){
			sb.append(" and DATE_FORMAT(t1.releaseDate,'%Y年%m月')='"+s_diary.getReleaseDateStr()+"'");
		}
		if(StringUtil.isNotEmpty(s_diary.getTitle())){
			sb.append(" and t1.title like '%"+s_diary.getTitle()+"%'");
		}
		
		sb.append(" order by t1.releaseDate desc");
		if(pageBean!=null){
			sb.append(" limit "+pageBean.getStart()+","+pageBean.getPageSize());
		}
		PreparedStatement pstmt=con.prepareStatement(sb.toString());
		ResultSet rs=pstmt.executeQuery();
		while(rs.next()){
			Diary diary=new Diary();
			diary.setDiaryId(rs.getInt("diaryId"));
			diary.setTitle(rs.getString("title"));
			diary.setContent(rs.getString("content"));
			diary.setReleaseDate(DateUtil.formatString(rs.getString("releaseDate"), "yyyy-MM-dd HH:mm:ss"));
			diaryList.add(diary);
		}
		return diaryList;
	}
	
	/**
	 * 统计对应类别的日记个数
	 * @param con
	 * @return
	 * @throws Exception
	 */
	public int diaryCount(Connection con,Diary s_diary)throws Exception{
		StringBuffer sb=new StringBuffer("select count(*) as total from t_diary t1,t_diaryType t2 where t1.typeId=t2.diaryTypeId ");
		
		if(StringUtil.isNotEmpty(s_diary.getTitle())){
			sb.append(" and t1.title like '%"+s_diary.getTitle()+"%'");
		}
		if(s_diary.getTypeId()!=-1){
			sb.append(" and t1.typeId="+s_diary.getTypeId());
		}
		if(StringUtil.isNotEmpty(s_diary.getReleaseDateStr())){
			sb.append(" and DATE_FORMAT(t1.releaseDate,'%Y年%m月')='"+s_diary.getReleaseDateStr()+"'");
		}
		
		PreparedStatement pstmt=con.prepareStatement(sb.toString());
		ResultSet rs=pstmt.executeQuery();
		if(rs.next()){
			return rs.getInt("total");
		}else{
			return 0;
		}
	}
	
	/**
	 * 查询日记日期列表显示
	 * @param con
	 * @return
	 * @throws Exception
	 */
	public List<Diary> diaryCountList(Connection con)throws Exception{
		List<Diary> diaryCountList=new ArrayList<Diary>();
		String sql="SELECT DATE_FORMAT(releaseDate,'%Y年%m月') as releaseDateStr ,COUNT(*) AS diaryCount  FROM t_diary GROUP BY DATE_FORMAT(releaseDate,'%Y年%m月') ORDER BY DATE_FORMAT(releaseDate,'%Y年%m月') DESC;";
		PreparedStatement pstmt=con.prepareStatement(sql);
		//Statement stmt = con.createStatement();
		ResultSet rs=pstmt.executeQuery();
		while(rs.next()){
			Diary diary=new Diary();
			diary.setReleaseDateStr(rs.getString("releaseDateStr"));
			diary.setDiaryCount(rs.getInt("diaryCount"));
			diaryCountList.add(diary);
		}
		return diaryCountList;
	}
	
	/**
	 * 日记内容显示
	 * @param con
	 * @param diaryId
	 * @return
	 * @throws Exception
	 */
	public Diary diaryShow(Connection con,String diaryId)throws Exception{
		String sql="select * from t_diary t1,t_diaryType t2 where t1.typeId=t2.diaryTypeId and t1.diaryId=?";
		PreparedStatement pstmt=con.prepareStatement(sql);
		pstmt.setString(1, diaryId);
		ResultSet rs=pstmt.executeQuery();
		Diary diary=new Diary();
		if(rs.next()){
			diary.setDiaryId(rs.getInt("diaryId"));
			diary.setTitle(rs.getString("title"));
			diary.setContent(rs.getString("content"));
			diary.setTypeId(rs.getInt("typeId"));
			diary.setTypeName(rs.getString("typeName"));
			diary.setReleaseDate(DateUtil.formatString(rs.getString("releaseDate"),"yyyy-MM-dd HH:mm:ss"));
		}
		return diary;
	}
	
	/**
	 * 添加日记
	 * @param con
	 * @param diary
	 * @return
	 * @throws Exception
	 */
	public int diaryAdd(Connection con,Diary diary)throws Exception{
		String sql="insert into t_diary values(null,?,?,?,now())";
		PreparedStatement pstmt=con.prepareStatement(sql);
		pstmt.setString(1, diary.getTitle());
		pstmt.setString(2, diary.getContent());
		pstmt.setInt(3, diary.getTypeId());
		return pstmt.executeUpdate();
	}
	
	/**
	 * 删除日记
	 * @param con
	 * @param diaryId
	 * @return
	 * @throws Exception
	 */
	public int diaryDelete(Connection con,String diaryId)throws Exception{
		String sql="delete from t_diary where diaryId=?";
		PreparedStatement pstmt=con.prepareStatement(sql);
		pstmt.setString(1, diaryId);
		return pstmt.executeUpdate();
	}
	
	/**
	 * 修改日记
	 * @param con
	 * @param diary
	 * @return
	 * @throws Exception
	 */
	public int diaryUpdate(Connection con,Diary diary)throws Exception{
		String sql="update t_diary set title=?,content=?,typeId=? where diaryId=?";
		PreparedStatement pstmt=con.prepareStatement(sql);
		pstmt.setString(1, diary.getTitle());
		pstmt.setString(2, diary.getContent());
		pstmt.setInt(3, diary.getTypeId());
		pstmt.setInt(4, diary.getDiaryId());
		return pstmt.executeUpdate();
	}
	
	/**
	 * 判断该日记类别下是否有日记
	 * @param con
	 * @param typeId
	 * @return
	 * @throws Exception
	 */
	public boolean existDiaryWithTypeId(Connection con,String typeId)throws Exception{
		String sql="select * from t_diary where typeId=?";
		PreparedStatement pstmt=con.prepareStatement(sql);
		pstmt.setString(1, typeId);
		ResultSet rs=pstmt.executeQuery();
		if(rs.next()){
			return true;
		}else{
			return false;
		}
	}
}