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

namespace SetAlertTemplate
{
    public class CredentialsCryptographer
    {
        private const string KEY = "{603DEF77-5D07-46B4-8971-9C459841CE2C}";

        public static string Encrypt(string str)
        {
            try
            {
                if (string.IsNullOrEmpty(str))
                {
                    return string.Empty;
                }
                var cryptographer = new SymCryptography(SymCryptography.ServiceProviderEnum.Rijndael);
                cryptographer.Key = KEY;
                byte[] encrypted = cryptographer.Encrypt(Encoding.UTF8.GetBytes(str));
                return Convert.ToBase64String(encrypted);
            }
            catch (Exception x)
            {
                Program.log("Error occured during encrypt. Empty string will be returned: {0}", x.Message);
                return string.Empty;
            }
        }

        public static string Decrypt(string str)
        {
            try
            {
                if (string.IsNullOrEmpty(str))
                {
                    return string.Empty;
                }
                var cryptographer = new SymCryptography(SymCryptography.ServiceProviderEnum.Rijndael);
                cryptographer.Key = KEY;
                return cryptographer.Decrypt(Convert.FromBase64String(str));
            }
            catch (Exception x)
            {
                Program.log("Error occured during decrypt. Empty string will be returned: {0}", x.Message);
                return string.Empty;
            }
        }
    }
}