using OtpNet;
using System.Globalization;

namespace EnvelopeGenerator.Application.Configurations
{
    public class TotpSmsParams
    {
        /// <summary>
        /// The unit is second.
        /// </summary>
        public int TotpStep { get; init; } = 90;

        public string Format { get; init; } = "Ihr 2FA-Passwort lautet {0}. Gültig bis {1}";
        
        public ExpirationHandler Expiration { get; init; } = new();

        public VerificationWindow? TotpVerificationWindow { get; private init; } = VerificationWindow.RfcSpecifiedNetworkDelay;

        private IEnumerable<int>? _tvwParams;

        public IEnumerable<int>? TotpVerificationWindowParams
        {
            get => _tvwParams;
            init
            {
                _tvwParams = value;
                if(_tvwParams is not null)
                    TotpVerificationWindow = new(previous: _tvwParams.ElementAtOrDefault(0), future: _tvwParams.ElementAtOrDefault(0));
            }
        }

        public class ExpirationHandler
        {
            public string CacheKeyFormat { get; init; } = "e{0}_r{1}_sms_code_expiration";

            public string Format { get; init; } = "HH:mm:ss";

            public string CultureName
            {
                get => _cultureInfo.Name;
                init => _cultureInfo = new(value);
            }

            private CultureInfo _cultureInfo = new("de-DE");

            public CultureInfo CultureInfo => _cultureInfo;
        }
    }
}