Imports System.IO
Imports System.Security.Cryptography

Public Class UPDATERfrm

    Dim CopyIncremental = True ' selbe Dateien nicht kopieren

    Private Sub UPDATERfrm_Load(sender As Object, e As EventArgs) Handles Me.Load

    End Sub

    Private Sub UPDATERfrm_Shown(sender As Object, e As EventArgs) Handles Me.Shown
        Dim trd As New Threading.Thread(AddressOf Main)
        trd.IsBackground = True
        trd.Start()
    End Sub



    Dim F As String = "F:\Programme\AVISO\" ' WDH TERM
    ' Dim F_PROD As String = "\\192.168.0.91\f\Programme\AVISO\" ' VERAG
    Dim F_PROD As String = "\\share01.verag.ost.dmn\Programme\AVISO\" ' VERAG
    ' Dim F As String = "\\192.168.0.90\f\Programme\AVISO\" 'DEVELOPER
    Dim F_ATILLA As String = "\\172.16.0.99\Daten\Programme\AVISO\" ' ATILLA
    Public Sub Main()

        'STARTPARAMETER - DP
        Dim PARAM = ""
        Dim parameter() As String = Environment.GetCommandLineArgs().ToArray
        If (parameter.Count - 1) >= 1 Then 'Höher als 1 weil der index 0 der Pfad zum programm ist
            PARAM = parameter(1)
        End If

        If PARAM = "full" Then
            CopyIncremental = False

        End If


        Dim FIRMA = "VERAG"
        Dim pfadDatei As String = System.AppDomain.CurrentDomain.BaseDirectory & "\Standort.txt"
        FIRMA = "VERAG"

        If File.Exists(pfadDatei) Then
            Dim fs As New FileStream(pfadDatei, FileMode.Open, FileAccess.Read)
            Dim strmReader As New StreamReader(fs)
            FIRMA = strmReader.ReadLine
            fs.Dispose()
            strmReader.Dispose()
        End If

        If FIRMA = "ATILLA" Then F = F_ATILLA 'Sichere Verbindung


        If F.Contains("10.4.3.17") Then buildConnectionUNISPED()

        'Falls Settings existiert, wird der Pfad daraus verwendet.
        ' F = System.IO.File.ReadAllLines(AppDomain.CurrentDomain.BaseDirectory & "AVISOUPDATER_Settings.txt")(0)
        '   F = System.IO.File.ReadAllText(AppDomain.CurrentDomain.BaseDirectory & "AVISOUPDATER_Settings.txt")

        If Not System.IO.Directory.Exists(F) Then
            F = getFByIP()

            writeLine(RichTextBox, "Verbinde mit '" & F & "' ...")
            If Not System.IO.Directory.Exists(F) Then
                If FIRMA = "ATILLA" Then
                    F = F_ATILLA 'Sichere Verbindung
                Else
                    F = F_PROD
                End If
                writeLine(RichTextBox, "Standard-Freigabelaufwerk nicht gefunden. Verbinde mit '" & F & "' ...")

                If Not System.IO.Directory.Exists(F) Then
                    MsgBox("ERROR_UPDATE_05: Es konnte keine Verbindung mit dem Freigabe-Laufwerk hergestellt werden." & vbNewLine & "Wenn Sie eine Remote-Sitzung verwenden, melden Sie sich mit dieser erneut an.", MsgBoxStyle.Critical, "ERROR")
                    Environment.Exit(0)
                End If
            End If

            writeLine(RichTextBox, "Verbindung erfolgreich...")
            'Else
            '  System.Console.WriteLine("UPDATEPFAD: " & F)

        End If

        writeLine(RichTextBox, "3 Sekunden warten, um sicherzustellen, dass das Programm beendet wurde...")
        Threading.Thread.Sleep(3000) 'Falls Programm gerade am Beenden
        writeLine(RichTextBox, "Starte Update...")
        ' If Not My.Computer.FileSystem.DirectoryExists(F) Then
        'MsgBox("ERROR_UPDATE_02: Update-Daten existieren nicht.", MsgBoxStyle.Critical, "ERROR")
        ' Else
        Try

            For i As Integer = 1 To 3 Step 1
                If Not DoesProcessExists("AVISO") Then
                    If Not tryDelMain() Then
                        MsgBox("ERROR_UPDATE_06: AVISO.exe konnte nicht gelöscht werden. Das Programm wird evtl. noch ausgeführt.", MsgBoxStyle.Critical, "ERROR")
                        Environment.Exit(0)
                    End If

                    '---------------------------
                    '---------------------------
                    'Alternative: 
                    '-------
                    'copyAndDelFilesAndDir()
                    '---------------------------

                    '     If Not cut_file(File).Contains("AVISOUPDATER") And Not cut_file(File).Contains("NOT_DEL_") Then


                    If CopyIncremental Then
                        cProgrammeUpdate.copyProgramLIST(F, AppDomain.CurrentDomain.BaseDirectory, {"AVISOUPDATER", "NOT_DEL_"})
                    Else
                        delFiles()
                        FileCopier()
                    End If



                    If Not System.IO.File.Exists(AppDomain.CurrentDomain.BaseDirectory & "AVISO.exe") Then
                        MsgBox("ERROR_UPDATE_03: AVISO.exe konnte nicht gestartet werden.", MsgBoxStyle.Critical, "ERROR")

                    End If
                    If Not System.IO.File.Exists(AppDomain.CurrentDomain.BaseDirectory & "upd.tmp") Then
                        System.IO.File.Create(AppDomain.CurrentDomain.BaseDirectory & "upd.tmp")
                    End If
                    writeLine(RichTextBox, "Erfolgreich abgeschlossen...")
                    Process.Start("AVISO.exe")
                    Environment.Exit(0)
                End If
                Threading.Thread.Sleep(1000)
            Next
            MsgBox("ERROR_UPDATE_01: Update konnte nicht durchgeführt werden. AVISO.exe nicht beendet?", MsgBoxStyle.Critical, "ERROR")

        Catch ex As Exception
            MsgBox("ERROR_UPDATE_02: Update-Daten existieren nicht.", MsgBoxStyle.Critical, "ERROR")
        End Try
        'End If
        Environment.Exit(0)
    End Sub

    Function getFByIP() As String
        Dim default_F = ""
        getFByIP = ""
        Try
            Dim IPADDR As System.Net.IPAddress
            IPADDR = System.Net.Dns.GetHostByName(System.Net.Dns.GetHostName()).AddressList(0)
            'MsgBox(IPADDR.ToString())

            For Each l In System.IO.File.ReadAllLines(AppDomain.CurrentDomain.BaseDirectory & "AVISOUPDATER_Settings.txt")
                If l.Contains("|") Then
                    Dim sp = l.Split("|")
                    If IPADDR.ToString.Contains(sp(0).Replace("**", "")) Then
                        getFByIP = sp(1)
                    End If
                Else
                    default_F = l
                End If
            Next
        Catch ex As Exception
            MsgBox(ex.Message & ex.StackTrace)
        End Try
        If getFByIP = "" Then
            If default_F <> "" Then
                getFByIP = default_F
            Else
                getFByIP = F
            End If
        End If
    End Function


    Sub buildConnectionUNISPED()
        Try

            writeLine(RichTextBox, "UNISPED Netzwerkzugriff einrichten...")
            'Dim netuse1 As New System.Diagnostics.ProcessStartInfo()

            'netuse1.FileName = "C:\Windows\system32\net"
            'netuse1.Arguments = "use \\10.4.3.17 /User:VERAG 1VerSub9#"
            'netuse1.CreateNoWindow = True
            'netuse1.WindowStyle = ProcessWindowStyle.Hidden
            'System.Diagnostics.Process.Start(netuse1)

            Dim netuse As New System.Diagnostics.ProcessStartInfo()

            netuse.FileName = "C:\Windows\system32\net"
            netuse.Arguments = "use \\10.4.3.17 /User:VERAG 1VerSub9#"
            netuse.CreateNoWindow = True
            netuse.WindowStyle = ProcessWindowStyle.Hidden
            System.Diagnostics.Process.Start(netuse)

        Catch ex As Exception
            writeLine(RichTextBox, "ERR: UNISPED Netzwerkzugriff fehlgeschlagen...")

        End Try
    End Sub


    Delegate Sub writeLineCallback(rtb As System.Windows.Forms.RichTextBox, text As String)
    Private Sub writeLine(rtb As System.Windows.Forms.RichTextBox, text As String)
        If Me.InvokeRequired Then
            Dim d As New writeLineCallback(AddressOf writeLine)
            Me.Invoke(d, New Object() {rtb, text})
        Else
            rtb.Text &= text & vbNewLine
        End If

    End Sub

    'Sub writeLine(richtextbox,text)
    '     RichTextBox.Text &= text & vbNewLine
    ' End Sub
    Private Sub FileCopier()
        CopyDir(F, AppDomain.CurrentDomain.BaseDirectory)
        Exit Sub

        For Each file As String In IO.Directory.GetFiles(F) ' Ermittelt alle Dateien des Ordners 
            IO.File.Copy(file, AppDomain.CurrentDomain.BaseDirectory & cut_file(file), True) ' Kopiert die Dateien Next 
        Next
        For Each file As String In IO.Directory.GetDirectories(F) ' Ermittelt alle Unterordner des Ordners 
            My.Computer.FileSystem.CopyDirectory(file, AppDomain.CurrentDomain.BaseDirectory & cut_file(file), True)
        Next
    End Sub




    Private Function cut_file(ByVal file As String) As String ' Funktion zum Entfernen der Backslashs / Ordner While file.Contains("\") file = file.Remove(0, 1) End While Return file End Function 
        While file.Contains("\")
            file = file.Remove(0, 1)
        End While
        Return file
    End Function
    Private Function tryDelMain() As Boolean
        'Dim f As String = "no"
        Try
            If System.IO.File.Exists(AppDomain.CurrentDomain.BaseDirectory & "AVISO.exe") Then My.Computer.FileSystem.DeleteFile(AppDomain.CurrentDomain.BaseDirectory & "AVISO.exe")
            Return True
        Catch ex As Exception
            MsgBox("ERROR_UPDATE_04: Fehler beim Löschen: " & F & vbNewLine & ex.Message, MsgBoxStyle.Critical, "ERROR")
            Environment.Exit(0)
            Return False
        End Try
    End Function

    Private Sub copyAndDelFilesAndDir()
        'Dim f As String = "no"
        Try
            With ProgressBar
                .Maximum = CInt(GetFolderSize(F) \ 1024)
                'eventuell Rückgabe direkt auf 0 abfragen 
                If .Maximum = 0 Then Exit Sub
                .Minimum = 0
                .Value = 0
            End With

            For Each file_source In IO.Directory.GetFiles(F) 'jedes File in F:\
                Dim found = False
                For Each file As String In IO.Directory.GetFiles(AppDomain.CurrentDomain.BaseDirectory) ' Ermittelt alle Dateien des Ordners 
                    If Not cut_file(file).Contains("AVISOUPDATER") And Not cut_file(file).Contains("NOT_DEL_") Then 'alles außer den Updater
                        If cut_file(file) = cut_file(file_source) Then 'Gleicher Name
                            If CompareFiles(file, file_source) Then
                                'selbe Datei --> Nichts
                            Else
                                My.Computer.FileSystem.DeleteFile(file)
                                Copy(New IO.FileInfo((file_source)), AppDomain.CurrentDomain.BaseDirectory) 'Kopieren
                            End If
                            found = True
                        End If
                    Else
                        '  found = True 'damit nicht mehr kopiert
                    End If
                Next
                If Not found Then
                    Copy(New IO.FileInfo((file_source)), AppDomain.CurrentDomain.BaseDirectory) 'Kopieren
                End If
            Next

            'Lösche wegefallende Dateien:
            For Each file As String In IO.Directory.GetFiles(AppDomain.CurrentDomain.BaseDirectory) ' Ermittelt alle Dateien des Ordners 
                Dim found = False
                For Each file_source In IO.Directory.GetFiles(F) 'jedes File in F:\
                    If Not cut_file(file).Contains("AVISOUPDATER") And Not cut_file(file).Contains("NOT_DEL_") Then 'alles außer den Updater
                        If cut_file(file) = cut_file(file_source) Then 'Gleicher Name
                            found = True
                        End If
                    Else
                        found = True
                    End If
                Next
                If found = False Then
                    My.Computer.FileSystem.DeleteFile(file)
                End If
            Next


            'Alle Ordner überschreiben:
            For Each file As String In IO.Directory.GetDirectories(F) ' Ermittelt alle Unterordner des Ordners 
                'Copy(New IO.FileInfo(file), DestinationFolder)
                My.Computer.FileSystem.CopyDirectory(file, AppDomain.CurrentDomain.BaseDirectory & cut_file(file), True)
            Next

            ProgressBar.Value = 0
            m_Label.Text = "0%"

        Catch ex As Exception
            MsgBox("ERROR_UPDATE_04: Fehler beim Löschen/Kopieren: " & F & vbNewLine & ex.Message & ex.StackTrace , MsgBoxStyle.Critical, "ERROR")
            Environment.Exit(0)
        End Try
    End Sub

    Private Sub delFiles()
        'Dim f As String = "no"
        Try
            For Each file As String In IO.Directory.GetFiles(AppDomain.CurrentDomain.BaseDirectory) ' Ermittelt alle Dateien des Ordners 
                If Not cut_file(file).Contains("AVISOUPDATER") And Not cut_file(file).Contains("NOT_DEL_") Then
                    '   f = file
                    My.Computer.FileSystem.DeleteFile(file) 'Löscht das AVISO-Programm, außer den Updater
                    ' IO.File.Delete(file)
                    'IO.Directory.Delete(file)
                End If

            Next
        Catch ex As Exception
            MsgBox("ERROR_UPDATE_04: Fehler beim Löschen: " & F & vbNewLine & ex.Message, MsgBoxStyle.Critical, "ERROR")
            Environment.Exit(0)
        End Try
    End Sub

    Private Function DoesProcessExists(ByVal PName As String) As Boolean
        For Each p As Process In System.Diagnostics.Process.GetProcessesByName(PName)
            If p.StartInfo.UserName = Environment.UserName Then
                Return True
            End If
        Next
        Return False
    End Function

    Private Sub btnClose_Click(sender As Object, e As EventArgs) Handles btnClose.Click
        Me.Close()

    End Sub



    Private Sub CopyDir(ByVal SourceFolder As String, ByVal DestinationFolder As String)

        With ProgressBar
            .Maximum = CInt(GetFolderSize(SourceFolder) \ 1024)
            'eventuell Rückgabe direkt auf 0 abfragen 
            If .Maximum = 0 Then Exit Sub
            .Minimum = 0
            .Value = 0
        End With

        For Each file As String In IO.Directory.GetFiles(SourceFolder)
            Copy(New IO.FileInfo(file), DestinationFolder)
        Next file

        For Each file As String In IO.Directory.GetDirectories(F) ' Ermittelt alle Unterordner des Ordners 
            'Copy(New IO.FileInfo(file), DestinationFolder)
            My.Computer.FileSystem.CopyDirectory(file, AppDomain.CurrentDomain.BaseDirectory & cut_file(file), True)
        Next

        ProgressBar.Value = 0
        m_Label.Text = "0%"

    End Sub

    Private Function GetFolderSize(ByVal Folder As String) As Long
        Dim l As Long
        For Each file As String In IO.Directory.GetFiles(Folder)
            l += New IO.FileInfo(file).Length
        Next file
        Return l
    End Function

    Private Sub Copy(ByVal SourceFile As IO.FileInfo, ByVal TargetDir As String)

        Try
            ' Quelle
            Dim fsmsource As IO.FileStream
            ' Zieldatei
            Dim fsmtarget As IO.FileStream

            ' Größe des bei jedem Durchlauf einzulesenden Datenpaketes
            Dim buffersize As Int32 = 1024 * 30 ' (30 KByte)
            Dim buffer(buffersize) As Byte
            Dim readbyte As Int32

            ' Quelldatei
            ' Using nutzen
            fsmsource = New IO.FileStream(SourceFile.FullName, IO.FileMode.Open, IO.FileAccess.Read, IO.FileShare.Read)

            ' Zieldatei
            fsmtarget = New IO.FileStream(IO.Path.Combine(TargetDir, SourceFile.Name), IO.FileMode.OpenOrCreate, IO.FileAccess.Write)

            ' Daten nach und nach einlesen und im Zielstream wieder 
            ' zurückschreiben
            While fsmsource.Position < fsmsource.Length
                ' Quelle einlesen
                readbyte = fsmsource.Read(buffer, 0, buffersize)

                ' In das Ziel schreiben
                fsmtarget.Write(buffer, 0, readbyte)

                With ProgressBar
                    Dim vl As Integer = .Value
                    vl = Math.Min(.Maximum, readbyte \ 1024 + vl)
                    .Value = vl
                    m_Label.Text = CStr(CInt(100 * .Value / .Maximum)) + "%"
                    .Refresh()
                    m_Label.Refresh()
                End With

            End While

            ' Streams schließen
            fsmsource.Close()
            fsmtarget.Close()
        Catch ex As Exception
            MsgBox(ex.Message, MsgBoxStyle.Critical, "Error")
        End Try
    End Sub






    Public Function CompareFiles(ByVal FileFullPath1 As String, ByVal FileFullPath2 As String) As Boolean

        'returns true if two files passed to is are identical, false
        'otherwise

        'does byte comparison; works for both text and binary files

        'Throws exception on errors; you can change to just return 
        'false if you prefer


        Dim objMD5 As New MD5CryptoServiceProvider()
        Dim objEncoding As New System.Text.ASCIIEncoding()

        Dim aFile1() As Byte, aFile2() As Byte
        Dim strContents1, strContents2 As String
        Dim objReader As StreamReader
        Dim objFS As FileStream
        Dim bAns As Boolean
        If Not File.Exists(FileFullPath1) Then Return False ' Throw New Exception(FileFullPath1 & " doesn't exist")
        If Not File.Exists(FileFullPath2) Then Return False ' Throw New Exception(FileFullPath2 & " doesn't exist")

        Try

            objFS = New FileStream(FileFullPath1, FileMode.Open)
            objReader = New StreamReader(objFS)
            aFile1 = objEncoding.GetBytes(objReader.ReadToEnd)
            strContents1 = _
              objEncoding.GetString(objMD5.ComputeHash(aFile1))
            objReader.Close()
            objFS.Close()


            objFS = New FileStream(FileFullPath2, FileMode.Open)
            objReader = New StreamReader(objFS)
            aFile2 = objEncoding.GetBytes(objReader.ReadToEnd)
            strContents2 = _
             objEncoding.GetString(objMD5.ComputeHash(aFile2))

            bAns = strContents1 = strContents2
            objReader.Close()
            objFS.Close()
            aFile1 = Nothing
            aFile2 = Nothing

        Catch ex As Exception
            ' Throw ex
            Return False

        End Try

        Return bAns
    End Function



End Class