using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Security.Cryptography;
using System.Text;

namespace StoreHub.KJDWebService.Commons
{
    public class EncrypUtil
    {
        /// <summary>
        /// 加密算法
        /// </summary>
        /// <param name="s">加密字符串</param>
        /// <returns></returns>
        public static string Encryption(int s)
        {
            string sign = $"{s}sdhewu*/fhAAue48485ew5+5%@3485esGFFHFD";
            return GetMd5(sign);
        }

        /// <summary>
        /// MD5加密
        /// </summary>
        /// <param name="instring"></param>
        /// <returns></returns>
        public static string GetMd5(string instring)
        {
            byte[] result = Encoding.Default.GetBytes(instring.Trim());
            MD5 md5 = new MD5CryptoServiceProvider();
            byte[] output = md5.ComputeHash(result);
            return BitConverter.ToString(output).Replace("-", "");
        }

        /// <summary>
        /// 获取文件MD5值
        /// </summary>
        /// <param name="FilePath"></param>
        /// <returns></returns>
        public static string GetFileMd5(string FilePath)
        {
            try
            {
                FileStream get_file = new FileStream(FilePath, FileMode.Open, FileAccess.Read, FileShare.Read);
                System.Security.Cryptography.MD5CryptoServiceProvider get_md5 = new System.Security.Cryptography.MD5CryptoServiceProvider();
                byte[] hash_byte = get_md5.ComputeHash(get_file);
                string resule = System.BitConverter.ToString(hash_byte);
                resule = resule.Replace("-", "");
                get_file.Close();
                return resule;
            }
            catch (Exception e)
            {
                return e.ToString();
            }
        }
    }
}