Imports BetterSeal

Public Class Time

    Public Shared Function epochTimeStamp(ByVal Optional year As Integer = 1970,
                                   Optional month As Integer = 1,
                                   Optional day As Integer = 1) As Integer
        Dim currentTime As DateTime = DateTime.Now.ToUniversalTime
        Dim epoch As New DateTime(year, month, day)
        Return (currentTime.Subtract(epoch)).TotalSeconds
    End Function

    Public Shared Function GetDaySuffix(day As Integer) As String
        Select Case day
            Case 1, 21, 31
                Return "st"
            Case 2, 22
                Return "nd"
            Case 3, 23
                Return "rd"
            Case Else
                Return "th"
        End Select
    End Function

    Public Shared Function expireDate(userInfo As LoginResponse) As String
        If userInfo.lifetime Then Return "Never"
        Dim userEpoch As Integer = userInfo.remain
        Dim secondsLeft As Integer = userEpoch - epochTimeStamp()
        Dim expiredDateTime = Now.ToUniversalTime.AddSeconds(secondsLeft)
        Return expiredDateTime.ToString("MMMM d") + GetDaySuffix(expiredDateTime.Day) + ", " + expiredDateTime.ToString("yyyy")
    End Function

End Class