using OtpNet;

namespace Mirea.Api.Security.Services;

public class TotpService
{
    private readonly Totp _totp;

    public TotpService(string secret)
    {
        var secretBytes = Base32Encoding.ToBytes(secret);
        _totp = new Totp(secretBytes);
    }

    public string GenerateToken() =>
        _totp.ComputeTotp();

    public bool VerifyToken(string token) =>
        _totp.VerifyTotp(token, out _, new VerificationWindow(2, 2));
}