using System;

using System.Security.Cryptography;

using System.Text;

​

namespace CrossvileTokenGenerator

{

    class Program

    {

        public static string SKU = "ASK0210202MOS";

        public static string secretKey = "838ENwiLtSEBGfEk2P9KcVSWW4JM33wN";

        public static string MaticadBasUrl = @"https://d3dwebapp.maticad.com/ti?token=GENERATED_TOKEN&tileCode=TILE_CODE&manufCode=CROSSVILLE&colorVar=0&enableOffshadedView=true";

​

        public static void Main()

        {

            var token = GenerateToken(secretKey);

            var newUrl = MaticadBasUrl.Replace("GENERATED_TOKEN", token).Replace("TILE_CODE",SKU);

            Console.WriteLine(newUrl);

        }

​

        private static string GenerateToken(string key)

        {

            var encoding = Encoding.ASCII;

​

            var tokenType = @"{""alg"": ""HS256"", ""typ"": ""JWT""}";

​

            var expirationTime = DateTimeOffset.Now.AddSeconds(15).ToUnixTimeSeconds();

​

            var payload = $@"{{""tp:tid"": ""CROSSVILLE"", ""tp:gid"": ""0"", ""tp:uid"": ""0"", ""tp:mxp"": ""0"", ""exp"": {expirationTime}}}";

​

            var encodedTokenType = Convert.ToBase64String(encoding.GetBytes(tokenType)).TrimEnd('=');

​

            var encodedPayload = Convert.ToBase64String(encoding.GetBytes(payload)).TrimEnd('=');

​

            var signatureFormat = $"{encodedTokenType}.{encodedPayload}";

​

            var algorithm = new HMACSHA256(encoding.GetBytes(key));

​

            var hash = algorithm.ComputeHash(encoding.GetBytes(signatureFormat));

​

            var signature = Convert.ToBase64String(hash).TrimEnd('=');

​

            return $"{encodedTokenType}.{encodedPayload}.{signature}";

        }

    }

}

​