package com.javaweb.platform.utils;

import java.util.Random;

import cn.hutool.cache.CacheUtil;
import cn.hutool.cache.impl.TimedCache;

public class CaptCodeUtils {
	
	 private static long timeout = 1000* 60 ;//1分钟过期		
	 
	 //用户缓存hash表
	 public static TimedCache<String, String> captcodeCache = CacheUtil.newTimedCache(timeout);
	
	 public static String verifyCode(){
	        int a = 1234567890;
	        String b ="abcdefghijklmnopqrstuvwxyz";
	        String B=b.toUpperCase();
	        String c=a+b+B;
	        char[] d=c.toCharArray();
	        Random random = new Random();
	        String f="";
	        for (int k = 0; k < 6; k++) {
	            int index = random.nextInt(d.length);
	            f+=d[index];
	        }
	        //添加缓存
	        setCahce(f);
	        return f;
	  }
	 
	 //设置
	 public  static void setCahce(String code){
		 captcodeCache.put(code, code, timeout);
	 } 
	 
	 //验证码是否存在
	 public static boolean isExistCode(String code){
		String s = captcodeCache.get(code, false);
		if(s !=null){
			return true;
		}	
		return false;	
	 }
	 
	 //删除
	 public static void remove(String code){
		 captcodeCache.remove(code);
	 }
	 //清空
	 public static void clear(){
		 captcodeCache.clear();
	 }
	 
	
	


}