package com.topdraw.util;

import org.apache.commons.lang3.StringUtils;
import org.springframework.util.Base64Utils;

import java.nio.charset.StandardCharsets;
import java.util.Base64;
import java.util.regex.Pattern;

public class Base64Util {

    public static String encode(String name){
        String name1 = new String(Base64.getEncoder().encode(name.getBytes(StandardCharsets.UTF_8)));
        return name1;
    }



    public static boolean isBase64(String str) {
        if (StringUtils.isBlank(str)) {
            return false;
        }
        String base64Pattern = "^([A-Za-z0-9+/]{4})*([A-Za-z0-9+/]{4}|[A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{2}==)$";
        boolean matches = Pattern.matches(base64Pattern, str);
        if (matches) {
            String decodeBase64Str = new String(Base64Utils.decode(str.getBytes()));
            String encodeBase64Str = Base64Utils.encodeToString(decodeBase64Str.getBytes());
            if (str.equals(encodeBase64Str)) {
                return true;
            }
        }
        return false;
    }



    public static void main(String[] args) {
//        String name = "test005@itv";
//        String name = "18580619168a@iptv";
//        String encode = encode(name);
//        System.out.println(encode);
        boolean a = isBase64("fdsfdsf");
        System.out.println(a);
    }
}