package com.whyc.util;

import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonSyntaxException;
import org.springframework.context.ApplicationContext;
import org.springframework.web.context.ContextLoader;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.*;
import java.lang.reflect.Type;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

public class ActionUtil{

	public static String time_yyyyMMddHHmmss = "yyyy-MM-dd HH:mm:ss";

	/*
	 * 获取HttpServletRequest
	 */
	public static HttpServletRequest getRequest(){
		ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
		HttpServletRequest request = requestAttributes.getRequest();
		return request;
	}
	
	/*
	 * 获取HttpServletResponse
	 */
	public static HttpServletResponse getResponse(){
		ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
		HttpServletResponse response = requestAttributes.getResponse();
		return response;
	}
	
	/*
	 * 获取HttpSession
	 */
	public static HttpSession getSession(){
		return getRequest().getSession();
	} 
	
	/**
	 * 
	 * @return	返回application
	 */
	public static ServletContext getApplication(){
		ApplicationContext currentWebApplicationContext = ContextLoader.getCurrentWebApplicationContext();
		ServletContext servletContext = ContextLoader.getCurrentWebApplicationContext().getServletContext();
		return servletContext;
	}
	//获取application中互斥上传的标志位flag
	public static int getFlag(){
		ServletContext app=getApplication();
		int flag=(Integer) app.getAttribute("flag");
		return flag;
	}
	////给application中互斥上传的标志位flag设置值
	public static void setFlag(int flag){
		ServletContext app=getApplication();
		app.setAttribute("flag", flag);
	}
	/*
	 * 获取将对象转换成json格式
	 */
	public static String tojson(Object obj){
		Gson gson = new GsonBuilder().setDateFormat("yyyy-MM-dd HH:mm:ss").create();
		return gson.toJson(obj);
	}
	
	public static String chageDateToString(Date time,String type){
		String msg = "";
		SimpleDateFormat sdf = new SimpleDateFormat(type);
		msg = sdf.format(time);
		return msg;
	}
	
	
	/**
	 * 
	 * @param datetype	需要解析的日期的格式如："yyyy-MM-dd HH:mm:ss"
	 * @return	得到对应的gson对象
	 */
	public static Gson getGson(String datetype){
		return new  GsonBuilder().setDateFormat(datetype).create();
	}
	
	/**
	 * 获取默认的gson对象
	 * @return
	 */
	public static Gson getGson(){
		return new Gson();
	}
	
	
	public static <T> T getObject(String jsonstring,Type listtype){
		Gson gson=new Gson();
		T t=null;
		try {
			t=gson.fromJson(jsonstring, listtype);
		} catch (JsonSyntaxException e) {
			e.printStackTrace();
		}
		return t;
	}
 	
	/**
	 * 
	 * @return 获取输出流
	 */
	public static PrintWriter getOut(){
		PrintWriter out =null;
		try {
			out=getResponse().getWriter();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return out;
	}
	
	/**
	 * 
	 * @param time	java.util包中的时间
	 * @return		java.sql时间
	 */
	public static Date getSimpDate(Date time){
		//System.out.println(time);
		return new java.sql.Date(time.getTime());
	}
	
	//使用MD5加密
	/*public static Object EncryptionMD5(Object obj){
		String md5=null;
		if(obj!=null && obj.toString().length()>0){			
			md5=DigestUtils.md5Hex(obj.toString());
		}
		return md5;
	}*/
	
	//使用Base64加密
	public static Object EncryptionBase64(Object obj){
		String base64=null;
		if(obj!=null && obj.toString().length()>0){
			base64=new BASE64Encoder().encode(obj.toString().getBytes());
			base64 = base64.replaceAll("[\\s*\t\n\r]", ""); 		//替换加密后不换行
		}
		return base64;
	}
	
	//使用Base64解密
	public static Object DecryptionBase64(Object obj){
		String base64=null;
		if(obj!=null && obj.toString().length()>0){
			try {
				base64 = new String(new BASE64Decoder().decodeBuffer(obj.toString()));
			} catch (IOException e) {				
				e.printStackTrace();
			}
		}
		return base64;
	}
	
	//获取指定年月的天数
    public static int getDaysByYearMonth(int year, int month) {  
        
        Calendar a = Calendar.getInstance();  
        a.set(Calendar.YEAR, year);  
        a.set(Calendar.MONTH, month - 1);  
        a.set(Calendar.DATE, 1);  
        a.roll(Calendar.DATE, -1);  
        int maxDate = a.get(Calendar.DATE);  
        return maxDate;  
    }  
    
    /**
     * 
     * @return 获取当前session 中的用户对象
     */
    /*public static Object getUser(){
    	HttpSession session =getSession();
    	Object obj=session.getAttribute("user");
    	User_inf user_inf = new User_inf();
    	if(obj==null){
    		user_inf.setUName("superuser");
        	user_inf.setUId(1002);
    	}else{
    		user_inf=(User_inf) session.getAttribute("user");
    	}
    	return user_inf;
    }*/
    
    //获取某年某月的起始和结束时间
    //需要注意的是：月份是从0开始的，比如说如果输入5的话，实际上显示的是4月份的最后一天，千万不要搞错了哦  
    public static String getLastDayOfMonth(int year, int month) {     
        Calendar cal = Calendar.getInstance();     
        cal.set(Calendar.YEAR, year);     
        cal.set(Calendar.MONTH, month);     
        cal.set(Calendar.DAY_OF_MONTH,cal.getActualMaximum(Calendar.DATE));  
       return  new   SimpleDateFormat( "yyyy-MM-dd ").format(cal.getTime())+"23:59:59";  
    } 
    
    public static String getFirstDayOfMonth(int year, int month) {     
        Calendar cal = Calendar.getInstance();     
        cal.set(Calendar.YEAR, year);     
        cal.set(Calendar.MONTH, month);  
        cal.set(Calendar.DAY_OF_MONTH,cal.getMinimum(Calendar.DATE));  
       return   new   SimpleDateFormat( "yyyy-MM-dd ").format(cal.getTime())+"00:00:00";  
    }  
    //获取当前时间的年份
    public static int getNowYear(){
    	Calendar ca = Calendar.getInstance();//得到一个Calendar的实例 
		ca.setTime(new Date()); //设置时间为当前时间 
		int year = ca.get(Calendar.YEAR);
		//System.out.println(month);
		return year;
    }
    //获取当前时间的月份
    public static int getNowMonth(){
    	Calendar ca = Calendar.getInstance();//得到一个Calendar的实例 
		ca.setTime(new Date()); //设置时间为当前时间 
		int month = ca.get(Calendar.MONTH) + 1;
		//System.out.println(month);
		return month;
    }
    //获取当前时间的日期
    public static int getNowday(){
    	Calendar ca = Calendar.getInstance();//得到一个Calendar的实例 
		ca.setTime(new Date()); //设置时间为当前时间 
		int day = ca.get(Calendar.DAY_OF_MONTH);
		//System.out.println(month);
		return day;
    }
   //当前时间加上x小时
    public static String getDateAdd(int minute){
    Date date = new Date();
    Calendar c = Calendar.getInstance();
    c.setTime(date);
    c.add(Calendar.MINUTE, minute);
    return new   SimpleDateFormat( "yyyy-MM-dd HH:mm:ss").format(c.getTime());
    }

   
    
    //获取时间的年份
    public static int getDateYear(Date date){
    	Calendar ca = Calendar.getInstance();//得到一个Calendar的实例 
		ca.setTime(date); //设置时间为当前时间 
		int year = ca.get(Calendar.YEAR);
		//System.out.println(month);
		return year;
    }
    //获取时间的月份
    public static int getDateMonth(Date date){
    	Calendar ca = Calendar.getInstance();//得到一个Calendar的实例 
		ca.setTime(date); //设置时间为当前时间 
		int month = ca.get(Calendar.MONTH) + 1;
		//System.out.println(month);
		return month;
    }
    //获取时间的日期
    public static int getDateday(Date date){
    	Calendar ca = Calendar.getInstance();//得到一个Calendar的实例 
		ca.setTime(date); //设置时间为当前时间 
		int day = ca.get(Calendar.DAY_OF_MONTH);
		//System.out.println(month);
		return day;
    }
    //当前时间加上x小时
    public static Date getDateAdd(Date date,int minute){
    Calendar c = Calendar.getInstance();
    c.setTime(date);
    c.add(Calendar.MINUTE, minute);
    return c.getTime();
    }
    //给定时间判断与当前时间相比是否为老电池(numYear为时间期限几年)
    public static int judgeBatt(Date inUseDate,Date date,int numYear){
    	int judge=0;
    	inUseDate.setYear(ActionUtil.getDateYear(inUseDate)+numYear-1900);
    	//System.out.println("inUseDate: "+inUseDate);
	    if(inUseDate.after(date)){
	    	judge=1;
	    }else{
	    	judge=0;
	    }
		return judge;
    }
    //获取某年某月某日内的时间<date为执行时间的时分秒设置为提醒时间段的时分秒>
    public static Date getWorkDay(Date date,Date noticeTime) {     
        Calendar cal = Calendar.getInstance();
        cal.setTime(date); //设置时间为执行日期
        int year = cal.get(Calendar.YEAR);//年
		int month = cal.get(Calendar.MONTH);//月
		int day = cal.get(Calendar.DAY_OF_MONTH);//日
		cal.setTime(noticeTime);//设置时间为提醒时间段
		/*int hour=cal.get(Calendar.HOUR_OF_DAY);//时
		int minute=cal.get(Calendar.MINUTE);//分
		int second=cal.get(Calendar.SECOND);//秒*/   
		cal.set(Calendar.YEAR, year);     
        cal.set(Calendar.MONTH, month);  
        cal.set(Calendar.DAY_OF_MONTH,day); 
        return  cal.getTime();
       } 
    //获取某年某月某日起始时间/结束时间
    public static String getDayTime(int year, int month,int day,int type) {     
        Calendar cal = Calendar.getInstance();     
        cal.set(Calendar.YEAR, year);     
        cal.set(Calendar.MONTH, month);
        cal.set(Calendar.DAY_OF_MONTH,day);  
        if(type==1){
        	return   new   SimpleDateFormat( "yyyy-MM-dd ").format(cal.getTime())+"00:00:00";  
			 
        } else if(type==2){
        	return   new   SimpleDateFormat( "yyyy-MM-dd ").format(cal.getTime())+"09:00:00";  
        }else if(type==3){
        	return   new   SimpleDateFormat( "yyyy-MM-dd ").format(cal.getTime())+"17:00:00";  
        }else if(type==4){
        	return   new   SimpleDateFormat( "yyyy-MM-dd ").format(cal.getTime())+"23:59:59";  
        }
       return   new   SimpleDateFormat( "yyyy-MM-dd ").format(cal.getTime());  
    } 

    //计算电池使用了多少个月
    public static int battInuseMonth(Date inUseDate){
    	int useDay=0;
    	Date nowd=new Date();//当前时间
    	int inuseY=ActionUtil.getDateYear(inUseDate);
    	int inuseM=ActionUtil.getDateMonth(inUseDate);
    	int nowY=ActionUtil.getDateYear(nowd);
    	int nowM=ActionUtil.getDateMonth(nowd);
    	if(inuseY==nowY){
    		useDay=nowM-inuseM;
    	}else{
    		useDay=(nowY-inuseY)*12+nowM-inuseM;
    	}
		return useDay;
    	
    }
    //计算日期之间相差的天数 
    public static int daysBetween(Date smdate,Date bdate)    
    {    
        SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");  
        
		try {
			smdate=sdf.parse(sdf.format(smdate));  
			bdate=sdf.parse(sdf.format(bdate));
		} catch (ParseException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	  
        Calendar cal = Calendar.getInstance();    
        cal.setTime(smdate);    
        long time1 = cal.getTimeInMillis();                 
        cal.setTime(bdate);    
        long time2 = cal.getTimeInMillis();         
        long between_days=(time2-time1)/(1000*3600*24);  
            
       return Math.abs(Integer.parseInt(String.valueOf(between_days)));           
    }
    //计算日期之间相差的小时 
    public static int HoursBetween(Date smdate,Date bdate)    
    {    
        SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");  
        try {
			smdate=sdf.parse(sdf.format(smdate));  
			bdate=sdf.parse(sdf.format(bdate));
		} catch (ParseException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}  
        Calendar cal = Calendar.getInstance();    
        cal.setTime(smdate);    
        long time1 = cal.getTimeInMillis();                 
        cal.setTime(bdate);    
        long time2 = cal.getTimeInMillis();         
        long between_hours=(time2-time1)/(1000*3600);  
        //System.out.println("between_hours:"+between_hours);
        return (int) Math.abs(between_hours);           
    } 
    
    //比较两个时间的大小
    public static int compareDate(Date d1,Date d2){
        if (d1.getTime() > d2.getTime()) {
            return 1;
        } else if (d1.getTime() < d2.getTime()) {
            return -1;
        } else {//相等
            return 0;
        }
        }
    /**
     * @Description: 根据图片地址转换为base64编码字符串
     * @Author: 
     * @CreateTime: 
     * @return
     */
    public static String getImageStr(String imgFile) {
        InputStream inputStream = null;
        byte[] data = null;
        try {
            inputStream = new FileInputStream(imgFile);
            data = new byte[inputStream.available()];
            inputStream.read(data);
            inputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        // 加密
        BASE64Encoder encoder = new BASE64Encoder();
        return encoder.encode(data);
    }
    
    
    /**
     * @Description: 将base64编码字符串转换为图片
     * @Author: 
     * @CreateTime: 
     * @param imgStr base64编码字符串
     * @param path 图片路径-具体到文件
     * @return
    */
    public static boolean generateImage(String imgStr, String path) {
    	if (imgStr == null)
    		return false;
    	BASE64Decoder decoder = new BASE64Decoder();
    	try {
    		// 解密
    		byte[] b = decoder.decodeBuffer(imgStr);
    		// 处理数据
    		for (int i = 0; i < b.length; ++i) {
    			if (b[i] < 0) {
    				b[i] += 256;
    			}
    		}
    		OutputStream out = new FileOutputStream(path);
    		out.write(b);
    		out.flush();
    		out.close();
    		return true;
    	} catch (Exception e) {
    		return false;
    	}
    }
    
    /**
     * 将输入流中的数据读到字节数组中
     * @param is
     * @return
     */
    public static byte[] IStoByteArr(InputStream is){
    	byte[] b = null;
		try {
			b = new byte[is.available()];
			is.read(b);
		} catch (IOException e) {
			e.printStackTrace();
		} finally{
			if(is != null){
				try {
					is.close();
				} catch (IOException e) {
					e.printStackTrace();
				}				
			}
		}
    	
    	return b;
    }

    /**
	 * 创建指定的文件文件，若不存在则先创建指定的文件夹再创建指定的文件
	 * @param filePath
	 */
	public static void createFilefolderIFNotExist(String filePath){
		File f = new File(filePath);
    	if(!f.exists()){
    		if(!f.getParentFile().exists()){
    			f.getParentFile().mkdirs();
    		}
    	} 
	}

}