using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using AllBase;

namespace Work.Api
{
    public class EncryptionCode
    {
        /// <summary>
        /// 加密
        /// </summary>
        /// <param name="pid"></param>
        /// <param name="sid"></param>
        /// <param name="mid"></param>
        /// <returns></returns>
        public static string GetCode(long pid, int sid, int mid,out string code)
        {
            code = "";
            if (sid == 1)
                code = "tb-";
            if (sid == 2)
                code = "pd-";
            if (sid == 3)
                code = "al-";
            if (sid == 4)
                code = "jx-";
            if (sid == 6)
                code = "wd-";
            code += pid;
            if (pid == 0 || sid == 0 || mid == 0)
                return "";
            string url = BaseClass.LoginApiUrl + "api/encodex.php?mall_id=" + mid + "&pid=" + pid + "&site_id=" + sid;
            string html = GetHtml.GetUrl(url);
            if (!string.IsNullOrEmpty(html) && html.Length < 50)
                return html;

            code = "";
            if (sid == 1)
                code = "tb-";
            if (sid == 2)
                code = "pd-";
            if (sid == 3)
                code = "al-";
            if (sid == 4)
                code = "jx-";
            if (sid == 6)
                code = "wd-";
            code += pid;

            int randx = new Random(Guid.NewGuid().GetHashCode()).Next(100, 999);
            int rmk = (mid % 27 + randx % 27) % 27;
            int[] mainKey = new int[] { 6, 1, 5, 8, 4, 3, 6, 7, 0, 2, 9, 1, 2, 4, 7, 6, 5, 0, 1, 6, 8, 4, 6, 7, 9, 1 };
            string news = new Random(Guid.NewGuid().GetHashCode()).Next(100, 999).ToString();
            for (int i = 0; i < code.Length; i++)
            {
                int newValue = (int)code[i] - 40 + mainKey[i] * (i % 6) + rmk * (i % 5);
                news += (char)newValue;
            }
            return "PBB" + EncodeBase64(Encoding.UTF8, news) + "?" + randx;
            return code;


            //int ridMain = new Random(Guid.NewGuid().GetHashCode()).Next(100, 999);
            //int ridClient = (mid % ridMain) % 26;

            //byte[] b = Encoding.Default.GetBytes(code);
            //List<int> k = new List<int>();
            //char[] ke = mid.ToString().ToCharArray();
            //for (int i = 0; i < ke.Length; i++)
            //{
            //    int j = int.Parse(ke[i].ToString());
            //    k.Add(j);
            //}
            //int y = 0;
            //for (int i = 0; i < b.Length; i++)
            //{
            //    int z = b[i] + k[y] * ridClient;
            //    b[i] = (byte)(z % 256);
            //    y++;
            //    if (y >= ke.Length)
            //        y = 0;
            //}
            //return "PBB" + Convert.ToBase64String(b) + "|" + ridMain;
        }
        public static string EncodeBase64(Encoding encode, string source)
        {
            byte[] bytes = encode.GetBytes(source);
            try
            {
                string code = Convert.ToBase64String(bytes);
                return code;
            }
            catch
            {
                return source;
            }
        }


        public static void Test()
        {
            StringBuilder s = new StringBuilder();
            for (int i = 0; i < 200; i++)
            {
                for (int sid = 1; sid < 4; sid++)
                {
                    string code = "";
                    if (sid == 1)
                        code = "tb-";
                    if (sid == 2)
                        code = "pd-";
                    if (sid == 3)
                        code = "al-";
                    
                    string mid = Randomx.GetNumber(Randomx.GetId(3, 8));
                    string pid = Randomx.GetNumber(Randomx.GetId(6,13));
                    code +=pid;
                    string url = "http://127.0.0.1:81/api/encodex.php?mall_id=" + mid + "&pid=" + pid + "&site_id=" + sid;
                    string html = GetHtml.Utf8(url);
                    url = "http://127.0.0.1:81/?obj=pinbaobao/decode&act=getx&mall_id=" + mid + "&encode=" + GetHtml.UrlEncodeUtf8(html);
                    string htmlx = GetHtml.Utf8(url);
                    s.AppendLine(code + "\t" + htmlx + "\t" + html);
                }
            }
            string xxxx = s.ToString();
        }

    }
}