namespace Unosquare.Swan.Networking
{
#if !NETSTANDARD1_3
    using System.Net.Mail;
#else
    using Exceptions;
#endif

    /// <summary>
    /// Use this class to store the sender session data.
    /// </summary>
    internal class SmtpSender
    {
        private readonly string _sessionId;
        private string _requestText;

        public SmtpSender(string sessionId)
        {
            _sessionId = sessionId;
        }

        public string RequestText
        {
            get => _requestText;
            set
            {
                _requestText = value;
                $"  TX {_requestText}".Debug(typeof(SmtpClient), _sessionId);
            }
        }

        public string ReplyText { get; set; }

        public bool IsReplyOk => ReplyText.StartsWith("250 ");

        public void ValidateReply()
        {
            if (ReplyText == null)
                throw new SmtpException("There was no response from the server");

            try
            {
                var response = SmtpServerReply.Parse(ReplyText);
                $"  RX {ReplyText} - {response.IsPositive}".Debug(typeof(SmtpClient), _sessionId);

                if (response.IsPositive) return;

                var responseContent = string.Empty;
                if (response.Content.Count > 0)
                    responseContent = string.Join(";", response.Content.ToArray());

                throw new SmtpException((SmtpStatusCode)response.ReplyCode, responseContent);
            }
            catch
            {
                throw new SmtpException($"Could not parse server response: {ReplyText}");
            }
        }
    }
}