// ReSharper disable InconsistentNaming
namespace Unosquare.Swan.Networking {
#if NETSTANDARD1_3

    /// <summary>
    /// Defines the different SMTP status codes
    /// </summary>
    public enum SmtpStatusCode
    {
        /// <summary>
        /// System code
        /// </summary>
        SystemStatus = 211,
        
        /// <summary>
        /// Help message code
        /// </summary>
        HelpMessage = 214,
        
        /// <summary>
        /// Service ready code
        /// </summary>
        ServiceReady = 220,
        
        /// <summary>
        /// Service closing channel code
        /// </summary>
        ServiceClosingTransmissionChannel = 221,
        
        /// <summary>
        /// OK Code
        /// </summary>
        Ok = 250,
        
        /// <summary>
        /// User not local code
        /// </summary>
        UserNotLocalWillForward = 251,
        
        /// <summary>
        /// Cannot verify user code
        /// </summary>
        CannotVerifyUserWillAttemptDelivery = 252,
        
        /// <summary>
        /// Start Mail Input code
        /// </summary>
        StartMailInput = 354,
        
        /// <summary>
        /// Service Not Available code
        /// </summary>
        ServiceNotAvailable = 421,
        
        /// <summary>
        /// Mailbox Busy code
        /// </summary>
        MailboxBusy = 450,
        
        /// <summary>
        /// Local Error code
        /// </summary>
        LocalErrorInProcessing = 451,
        
        /// <summary>
        /// Insufficient storage code
        /// </summary>
        InsufficientStorage = 452,
        
        /// <summary>
        /// Client not permitted code
        /// </summary>
        ClientNotPermitted = 454,
        
        /// <summary>
        /// Command Unrecognized
        /// </summary>
        CommandUnrecognized = 500,
        
        /// <summary>
        /// Syntax error
        /// </summary>
        SyntaxError = 501,
        
        /// <summary>
        /// Command Not Implemented
        /// </summary>
        CommandNotImplemented = 502,
        
        /// <summary>
        /// Bad Command Sequence
        /// </summary>
        BadCommandSequence = 503,
        
        /// <summary>
        /// Must Issue Start Tls First
        /// </summary>
        MustIssueStartTlsFirst = 530,
        
        /// <summary>
        /// Command Parameter Not Implemented
        /// </summary>
        CommandParameterNotImplemented = 504,
        
        /// <summary>
        /// Mailbox Unavailable
        /// </summary>
        MailboxUnavailable = 550,
        
        /// <summary>
        /// User Not Local Try Alternate Path
        /// </summary>
        UserNotLocalTryAlternatePath = 551,

        /// <summary>
        /// Exceeded Storage Allocation code
        /// </summary>
        ExceededStorageAllocation = 552,
        
        /// <summary>
        /// Mailbox name not allowed code
        /// </summary>
        MailboxNameNotAllowed = 553,
        
        /// <summary>
        /// Transaction failed code
        /// </summary>
        TransactionFailed = 554,
        
        /// <summary>
        /// General Failure code
        /// </summary>
        GeneralFailure = -1,
    }
#endif

  /// <summary>
  /// Enumerates all of the well-known SMTP command names.
  /// </summary>
  public enum SmtpCommandNames {
    /// <summary>
    /// An unknown command
    /// </summary>
    Unknown,

    /// <summary>
    /// The helo command
    /// </summary>
    HELO,

    /// <summary>
    /// The ehlo command
    /// </summary>
    EHLO,

    /// <summary>
    /// The quit command
    /// </summary>
    QUIT,

    /// <summary>
    /// The help command
    /// </summary>
    HELP,

    /// <summary>
    /// The noop command
    /// </summary>
    NOOP,

    /// <summary>
    /// The rset command
    /// </summary>
    RSET,

    /// <summary>
    /// The mail command
    /// </summary>
    MAIL,

    /// <summary>
    /// The data command
    /// </summary>
    DATA,

    /// <summary>
    /// The send command
    /// </summary>
    SEND,

    /// <summary>
    /// The soml command
    /// </summary>
    SOML,

    /// <summary>
    /// The saml command
    /// </summary>
    SAML,

    /// <summary>
    /// The RCPT command
    /// </summary>
    RCPT,

    /// <summary>
    /// The vrfy command
    /// </summary>
    VRFY,

    /// <summary>
    /// The expn command
    /// </summary>
    EXPN,

    /// <summary>
    /// The starttls command
    /// </summary>
    STARTTLS,

    /// <summary>
    /// The authentication command
    /// </summary>
    AUTH,
  }

  /// <summary>
  /// Enumerates the reply code severities.
  /// </summary>
  public enum SmtpReplyCodeSeverities {
    /// <summary>
    /// The unknown severity
    /// </summary>
    Unknown = 0,

    /// <summary>
    /// The positive completion severity
    /// </summary>
    PositiveCompletion = 200,

    /// <summary>
    /// The positive intermediate severity
    /// </summary>
    PositiveIntermediate = 300,

    /// <summary>
    /// The transient negative severity
    /// </summary>
    TransientNegative = 400,

    /// <summary>
    /// The permanent negative severity
    /// </summary>
    PermanentNegative = 500,
  }

  /// <summary>
  /// Enumerates the reply code categories.
  /// </summary>
  public enum SmtpReplyCodeCategories {
    /// <summary>
    /// The unknown category
    /// </summary>
    Unknown = -1,

    /// <summary>
    /// The syntax category
    /// </summary>
    Syntax = 0,

    /// <summary>
    /// The information category
    /// </summary>
    Information = 1,

    /// <summary>
    /// The connections category
    /// </summary>
    Connections = 2,

    /// <summary>
    /// The unspecified a category
    /// </summary>
    UnspecifiedA = 3,

    /// <summary>
    /// The unspecified b category
    /// </summary>
    UnspecifiedB = 4,

    /// <summary>
    /// The system category
    /// </summary>
    System = 5,
  }
}