Imports System.Net
Imports System.Net.Sockets
Imports System.IO
Imports System.Net.Mail
Imports DevExpress.Xpo

Public Class SISPOP3Base
    ' variables for pop3 class
    Public pop3host As [String]
    Public port As Integer
    Public user As [String]
    Public pwd As [String]
    Public command As [String]
    Public w_TcpClient As TcpClient
    Public w_NetStream As NetworkStream
    Public w_ReadStream As StreamReader
    Public bData As Byte()
    'for the data, tat we'll recive
    Public Function DoConnect(pop3host As [String], port As Integer, user As [String], pwd As [String]) As String
        ' create POP3 connection
        w_TcpClient = New TcpClient(pop3host, port)

        Try
            ' initialization
            w_NetStream = w_TcpClient.GetStream()
            w_ReadStream = New StreamReader(w_TcpClient.GetStream())
            w_ReadStream.ReadLine()

            ' send login
            command = "USER " & user & vbCr & vbLf
            bData = System.Text.Encoding.ASCII.GetBytes(command.ToCharArray())
            w_NetStream.Write(bData, 0, bData.Length)
            w_ReadStream.ReadLine()
            ' send pwd
            command = "PASS " & pwd & vbCr & vbLf
            bData = System.Text.Encoding.ASCII.GetBytes(command.ToCharArray())
            w_NetStream.Write(bData, 0, bData.Length)
            w_ReadStream.ReadLine()
        Catch err As InvalidOperationException
            Return ("Error: " & err.ToString())
        End Try
        Return "+OK"
    End Function
    Public Function GetStat() As String
        ' Send STAT command to get number of mail and total size
        command = "STAT" & vbCr & vbLf
        bData = System.Text.Encoding.ASCII.GetBytes(command.ToCharArray())
        w_NetStream.Write(bData, 0, bData.Length)
        Return w_ReadStream.ReadLine()
    End Function

    Public Function GetList() As String
        ' Send LIST command with no parametrs to get all information
        Dim sTemp As String
        ' For saving 'list' results
        Dim sList As String = ""
        command = "LIST" & vbCr & vbLf
        bData = System.Text.Encoding.ASCII.GetBytes(command.ToCharArray())
        w_NetStream.Write(bData, 0, bData.Length)
        sTemp = w_ReadStream.ReadLine()

        If sTemp(0) <> "-"c Then
            ' errors begins with '-'
            While sTemp <> "."
                'saving data to string while not found '.'
                sList += sTemp & vbCr & vbLf
                sTemp = w_ReadStream.ReadLine()
            End While
        Else
            Return sTemp
        End If
        Return sList
    End Function
    Public Function GetList(num As Integer) As String
        ' Send LIST command with number of a letter
        command = "LIST " & num & vbCr & vbLf
        bData = System.Text.Encoding.ASCII.GetBytes(command.ToCharArray())
        w_NetStream.Write(bData, 0, bData.Length)
        Return w_ReadStream.ReadLine()
    End Function
    Public Function Retr(num As Integer) As String
        Dim sTemp As String
        Dim sBody As String = ""
        Try
            command = "RETR " & num & vbCr & vbLf
            bData = System.Text.Encoding.ASCII.GetBytes(command.ToCharArray())
            w_NetStream.Write(bData, 0, bData.Length)

            sTemp = w_ReadStream.ReadLine()
            If sTemp(0) <> "-"c Then
                'errors begins with -
                While sTemp <> "."
                    ' . - is the end of the server response
                    sBody += sTemp & vbCr & vbLf
                    sTemp = w_ReadStream.ReadLine()
                End While
            Else
                Return sTemp
            End If
        Catch err As InvalidOperationException
            Return ("Error: " & err.ToString())
        End Try
        Return sBody
    End Function
    Public Function Dele(num As Integer) As String
        ' Send DELE command to delete message with specified number
        command = "DELE " & num & vbCr & vbLf
        bData = System.Text.Encoding.ASCII.GetBytes(command.ToCharArray())
        w_NetStream.Write(bData, 0, bData.Length)
        Return w_ReadStream.ReadLine()
    End Function
    Public Function Rset() As String
        ' Send RSET command to unmark all deleteting messages
        command = "RSET" & vbCr & vbLf
        bData = System.Text.Encoding.ASCII.GetBytes(command.ToCharArray())
        w_NetStream.Write(bData, 0, bData.Length)
        Return w_ReadStream.ReadLine()
    End Function

    Public Function Quit() As String
        ' Send QUIT
        command = "QUIT" & vbCr & vbLf
        bData = System.Text.Encoding.ASCII.GetBytes(command.ToCharArray())
        w_NetStream.Write(bData, 0, bData.Length)
        Dim tmp As [String] = w_ReadStream.ReadLine()
        w_NetStream.Close()
        w_ReadStream.Close()
        Return tmp
    End Function
    Public Function GetTop(num As Integer) As String
        Dim sTemp As String
        Dim [sTop] As String = ""
        Try
            ' retrieve mail with number mail parameter
            command = "TOP " & num & " n" & vbCr & vbLf
            bData = System.Text.Encoding.ASCII.GetBytes(command.ToCharArray())
            w_NetStream.Write(bData, 0, bData.Length)

            sTemp = w_ReadStream.ReadLine()
            If sTemp(0) <> "-"c Then
                While sTemp <> "."
                    [sTop] += sTemp & vbCr & vbLf
                    sTemp = w_ReadStream.ReadLine()
                End While
            Else
                Return sTemp
            End If
        Catch err As InvalidOperationException
            Return ("Error: " & err.ToString())
        End Try
        Return [sTop]
    End Function
    Public Function GetTop(num_mess As Integer, num_strok As Integer) As String
        Dim sTemp As String
        Dim [sTop] As String = ""
        Try
            ' retrieve mail with number mail parameter
            command = "TOP " & num_mess & " " & num_strok & vbCr & vbLf
            bData = System.Text.Encoding.ASCII.GetBytes(command.ToCharArray())
            w_NetStream.Write(bData, 0, bData.Length)

            sTemp = w_ReadStream.ReadLine()
            If sTemp(0) <> "-"c Then
                While sTemp <> "."
                    [sTop] += sTemp & vbCr & vbLf
                    sTemp = w_ReadStream.ReadLine()
                End While
            Else
                Return sTemp
            End If
        Catch err As InvalidOperationException
            Return ("Error: " & err.ToString())
        End Try
        Return [sTop]
    End Function
    Public Function GetUidl() As String
        Dim sTemp As String
        Dim sUidl As String = ""
        command = "UIDL" & vbCr & vbLf
        bData = System.Text.Encoding.ASCII.GetBytes(command.ToCharArray())
        w_NetStream.Write(bData, 0, bData.Length)
        sTemp = w_ReadStream.ReadLine()

        If sTemp(0) <> "-"c Then
            ' errors begins with '-'
            While sTemp <> "."
                'saving data to string while not found '.'
                sUidl += sTemp & vbCr & vbLf
                sTemp = w_ReadStream.ReadLine()
            End While
        Else
            Return sTemp
        End If
        Return sUidl
    End Function
    Public Function GetUidl(num As Integer) As String
        command = "UIDL " & num & vbCr & vbLf
        bData = System.Text.Encoding.ASCII.GetBytes(command.ToCharArray())
        w_NetStream.Write(bData, 0, bData.Length)
        Return w_ReadStream.ReadLine()
    End Function
    Public Function GetNoop() As String
        ' Send NOOP command to check if we are connected
        command = "NOOP" & vbCr & vbLf
        bData = System.Text.Encoding.ASCII.GetBytes(command.ToCharArray())
        w_NetStream.Write(bData, 0, bData.Length)
        Return w_ReadStream.ReadLine()
    End Function
End Class
Public Class SISPOP3Message
    Public Function GetFrom(messTop As String) As String
        messTop = messTop.Remove(0, (messTop.IndexOf(vbCr & vbLf & "From:") + 7))
        messTop = messTop.Remove(messTop.IndexOf(ControlChars.Cr), ((messTop.Length - messTop.IndexOf(ControlChars.Cr)) - 1))
        Return messTop
    End Function
    Public Function GetDate(messTop As String) As String
        messTop = messTop.Remove(0, (messTop.IndexOf(vbCr & vbLf & "Date:") + 7))
        messTop = messTop.Remove(messTop.IndexOf(ControlChars.Cr), (messTop.Length - messTop.IndexOf(ControlChars.Cr)))
        Return messTop
    End Function
    Public Function GetMessID(messTop As String) As String
        messTop = messTop.Remove(0, (messTop.IndexOf(vbCr & vbLf & "Message-ID: ") + 13))
        messTop = messTop.Remove(messTop.IndexOf(ControlChars.Cr), (messTop.Length - messTop.IndexOf(ControlChars.Cr)))
        Return messTop
    End Function
    Public Function GetTo(messTop As String) As String
        messTop = messTop.Remove(0, (messTop.IndexOf(vbCr & vbLf & "To:") + 6))
        messTop = messTop.Remove(messTop.IndexOf(ControlChars.Cr), (messTop.Length - messTop.IndexOf(ControlChars.Cr)))
        Return messTop
    End Function
    Public Function GetSubject(messTop As String) As String
        messTop = messTop.Remove(0, (messTop.IndexOf(vbCr & vbLf & "Subject:") + 10))
        messTop = messTop.Remove(messTop.IndexOf(ControlChars.Cr), (messTop.Length - messTop.IndexOf(ControlChars.Cr)))
        Return messTop
    End Function
    Public Function GetBody(AllMessage As String) As String
        AllMessage = AllMessage.Remove(0, (AllMessage.IndexOf(vbCr & vbLf & vbCr & vbLf)))
        Return AllMessage
    End Function
End Class
'Public Class SISSendMail
'    ReadOnly Property ContactsTo As XPCollection(Of Contacts)
'        Get
'            Return New xpcoll
'        End Get
'    End Property
'    Private Function SendMail(_Host As String, _Port As Long, _FromAddress As String, _Subject As String, _Body As String) As String
'        Try
'            Dim smtp As New SmtpClient()
'            Dim message As New MailMessage()

'            smtp.Host = _Host
'            smtp.Port = _Port

'            smtp.Credentials = System.Net.CredentialCache.DefaultNetworkCredentials

'            'smtp.Credentials = new System.Net.NetworkCredential("username", "password");

'            message.Subject = _Subject
'            message.Body = _Body
'            message.From = New MailAddress(_FromAddress)
'            message.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure
'            message.Priority = MailPriority.Normal

'            ' Make the list of recipients.

'            If [To].Count > 0 Then

'                For Each item As Contact In [To]


'                    message.[To].Add(New MailAddress(item.Email, item.FullName))

'                Next
'            End If

'            If CC.Count > 0 Then

'                For Each item As Contact In CC


'                    message.CC.Add(New MailAddress(item.Email, item.FullName))

'                Next
'            End If

'            If Bcc.Count > 0 Then

'                For Each item As Contact In Bcc


'                    message.Bcc.Add(New MailAddress(item.Email, item.FullName))

'                Next
'            End If

'            ' Create the file attachment (from the File property) for this e-mail message.

'            If File IsNot Nothing Then

'                Dim tempFileName As String = Oid.ToString()

'                Using fileStream As New FileStream(tempFileName, FileMode.OpenOrCreate)

'                    File.SaveToStream(fileStream)

'                    fileStream.Position = 0

'                    ' Create attachment by using existing fileStream.

'                    Dim data As New Attachment(fileStream, System.Net.Mime.MediaTypeNames.Application.Octet)

'                    ' Add time stamp information for the file.

'                    Dim disposition As System.Net.Mime.ContentDisposition = data.ContentDisposition

'                    disposition.FileName = File.FileName

'                    disposition.Size = fileStream.Length

'                    disposition.CreationDate = System.IO.File.GetCreationTime(tempFileName)

'                    disposition.ModificationDate = System.IO.File.GetLastWriteTime(tempFileName)

'                    disposition.ReadDate = System.IO.File.GetLastAccessTime(tempFileName)

'                    ' Add the attachment to this message.

'                    message.Attachments.Add(data)

'                    ' Send the message.

'                    smtp.Send(message)

'                    data.Dispose()

'                    ' Delete temp file.

'                    If System.IO.File.Exists(tempFileName) Then


'                        System.IO.File.Delete(tempFileName)

'                    End If

'                End Using

'            End If
'        Catch E As SmtpException


'            Return "Mail send failed with message: " + E.Message
'        End Try

'        Return "Mail was send successfully"

'    End Function

'End Class
'Dim pop3 As POP3class
'pop3 = New POP3class()
'pop3.DoConnect("your.mail.server", 110, "username", "password")
'pop3.GetStat()
'' and if we have mail:
'Dim msg As MessageClass
'msg = New MessageClass()
'Dim sMessageTop As String = msg.GetTop(1)
''OK, message is well, lets download it.
'Dim sAllMessage As String = msg.Retr(1)
'msg.GetBody(sAllMessage)