package cn.exrick.xboot.core.common.utils;

import cn.hutool.core.util.IdUtil;

import java.security.SecureRandom;

/**
 * @author Exrickx
 */
public class CommonUtil {

    private CommonUtil() {
        throw new IllegalStateException("Utility class");
    }

    private static SecureRandom random = new SecureRandom();

    /**
     * 以UUID重命名
     * @param fileName
     * @return
     */
    public static String renamePic(String fileName) {

        String extName = "";
        if (fileName.contains(".")) {
            extName = fileName.substring(fileName.lastIndexOf("."));
        }
        return IdUtil.simpleUUID() + extName;
    }

    /**
     * 随机6位数生成
     */
    public static String getRandomNum() {

        int num = random.nextInt(999999);
        // 不足六位前面补0
        String str = String.format("%06d", num);
        return str;
    }

    /**
     * 批量递归删除时 判断target是否在ids中 避免重复删除
     * @param target
     * @param ids
     * @return
     */
    public static Boolean judgeIds(String target, String[] ids) {

        Boolean flag = false;
        for (String id : ids) {
            if (id.equals(target)) {
                flag = true;
                break;
            }
        }
        return flag;
    }
}