using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;

namespace CommonToolsCore
{
    public class AesClass
    {
        const string Key = "dau&*5asda.;lk8L";
        /// <summary>
        ///  AES 加密
        /// </summary>
        /// <param name="str">明文（待加密）</param>
        /// <param name="key">key</param>
        /// <returns>密文</returns>
        public string AesEncrypt(string str, string key = Key)
        {
            if (string.IsNullOrEmpty(str)) return null;
            Byte[] toEncryptArray = Encoding.UTF8.GetBytes(str);

            RijndaelManaged rm = new RijndaelManaged
            {
                Key = Encoding.UTF8.GetBytes(key),
                Mode = CipherMode.ECB,
                Padding = PaddingMode.PKCS7
            };

            ICryptoTransform cTransform = rm.CreateEncryptor();
            Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

            return Convert.ToBase64String(resultArray, 0, resultArray.Length);
        }
        /// <summary>
        ///  AES 解密
        /// </summary>
        /// <param name="str">明文（待解密）</param>
        /// <param name="key">密文</param>
        /// <returns></returns>
        public string AesDecrypt(string str, string key = Key)
        {
            if (string.IsNullOrEmpty(str)) return null;
            Byte[] toEncryptArray = Convert.FromBase64String(str);

            RijndaelManaged rm = new RijndaelManaged
            {
                Key = Encoding.UTF8.GetBytes(key),
                Mode = CipherMode.ECB,
                Padding = PaddingMode.PKCS7
            };

            ICryptoTransform cTransform = rm.CreateDecryptor();
            Byte[] resultArray = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length);

            return Encoding.UTF8.GetString(resultArray);
        }
        /// <summary>
        /// 获取规则加密字符串  用于toke附带参数
        /// </summary>
        /// <param name="rules"> 规则集合 </param>
        /// <returns> 返回规则加密字符串 </returns>
        public string EncryptRules(RuleCollection rules)
        {
            string rs = JsonConvert.SerializeObject(rules);
            return AesEncrypt(rs);


        }

        /// <summary>
        /// 解密字规则支付穿
        /// </summary>
        /// <param name="rules">加密的字符串</param>
        /// <returns>规则字符串类</returns>
        public RuleCollection DecryptRules(string rules)
        {

            string str = AesDecrypt(rules);

            return JsonConvert.DeserializeObject<RuleCollection>(str);
            // return AesEncrypt(rs);


        }
    }




    /// <summary>
    /// 业务权限集合和其他集合
    /// </summary>
    public class RuleCollection
    {
        /// <summary>
        /// 用户名，这个名字可能会被更改
        /// </summary>
        public string User { get; set; }


        /// <summary>
        /// 授权的服务  用字符串表示，如果有  "CGGG"代表采购公告 "ZXDSFXLS" 代表竞争对手零时权限 没有该字符串，代表没有权限
        /// </summary>
        public List<string> PrivilegeService { get; set; }


        ///// <summary>
        /////  采购公告
        ///// </summary>
        //public int CGGG { get; set; }

        //    /// <summary>
        //    ///  竞争对手分析 零时权限
        //    /// </summary>
        //    public int ZXDSFXLS { get; set; }
        //    /// <summary>
        //    ///  竞争对手分析
        //    /// </summary>
        //    public int ZXDSFX { get; set; }

    }
}