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

namespace ConsoleApp1.OCPPAuth
{
    internal static class Ebus_capital
    {
        public static void Test()
        {
            //var url = "https://buscharge.zerovatech.com/service/api/v1/cpo/station";
            //var _body = "";
            //var timestamp = "";
            //string signature = GetSignature(GetUnencodeText(url, _body, timestamp, headers["PartnerId"], saltkey));
            var result = IsExpiryTime("1712031689");
            Console.WriteLine(result);
        }

        private static bool IsExpiryTime(string timestamp)
        {
            bool result = true;
            long minTime = DateTimeOffset.UtcNow.AddSeconds(-300).ToUnixTimeSeconds();
            long maxTime = DateTimeOffset.UtcNow.AddSeconds(300).ToUnixTimeSeconds();
            long requestTime = 0;

            if (long.TryParse(timestamp, out requestTime))
            {
                if (minTime < requestTime && maxTime > requestTime)
                {
                    result = false;
                }
            }

            DateTime dateTime = new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc);
            dateTime = dateTime.AddSeconds(requestTime).ToLocalTime();
            return result;
        }


        private static string GetUnencodeText(string url, string body, string timestamp, string partnerId, string saltkey)
        {

            string tempText = url.Substring(url.IndexOf('?') + 1).ToLower();
            tempText = tempText.StartsWith("http") ? string.Empty : tempText;
            body = tempText + body;
            string unencodeText = string.Format("{0}{1}{2}{3}", body, timestamp, partnerId, saltkey).ToLower();

            return unencodeText;
        }

        private static string GetSignature(string unencodeText)
        {
            if ((unencodeText == null) || (unencodeText.Length == 0))
            {
                return String.Empty;
            }
            unencodeText = unencodeText.ToLower();

            MD5 md5 = MD5.Create();// new MD5CryptoServiceProvider();
            byte[] textToHash = Encoding.UTF8.GetBytes(unencodeText);
            byte[] result = md5.ComputeHash(textToHash);
            return BitConverter.ToString(result).Replace("-", "").ToLower();
        }
    }
}