Imports System.IO
Imports System.Data.Sql
Imports System.Data.SqlClient
Imports System.Security.Principal

Public Class DB



    Public dsDaten As New DataSet
    Public dsdaten1 As New DataSet
    Public dadaten1 As New SqlDataAdapter
    Public dadaten As SqlDataAdapter
    Dim sql As String

    Public Sub Get_Funktionsgruppe()
        Try
            dsDaten.Clear()
            sql = " SELECT funktionsgruppenr, bezeichnung from funktionsgruppe"
            dadaten = New SqlDataAdapter(sql, Globals.sConnectionstring)
            dadaten.Fill(dsDaten, "Funktionsgruppe")
        Catch ex As Exception
            MsgBox(ex.Message)
        End Try
    End Sub

    Sub Get_Dokumenttyp_Funktionsgruppe(dokumenttypnr As Integer)
        dsdaten1.Clear()
        sql = " SELECT * from dokumentaufhebung where aktiv=1 and dokumenttypnr=" + dokumenttypnr.ToString
        dadaten1 = New SqlDataAdapter(sql, Globals.sConnectionstring)
        dadaten1.Fill(dsdaten1, "DokumenttypFunktionsgruppe")

    End Sub

   

    Sub Update_Daten()
        'Try
        '    Dim cb As New SqlCommandBuilder(dadatendocm)
        '    dadatendocm.Update(dsdatendocm, dsdatendocm.Tables(0).TableName)
        '    MsgBox("Änderungen wurden gespeichert")
        'Catch ex As Exception
        '    MsgBox("Felher: " + ex.Message)
        'End Try
    End Sub

End Class


Public Class DB_Connection

    ''' <summary>
    ''' Liest sämtlcihe CFG-Dateien mit dem Namen "Vertragsverwaltung...". Sind meherere Dateien vorhanden,
    ''' wird ein Auswahldialog zur Datenbank-Selektion angezeigt.
    ''' Standardmässig wird Vertragsverwaltung.cfg als CFG-Datei benutzt.
    ''' 
    ''' Die CFG-Datei ist verschlüsselt und wird über die Crypto-Funktionen entschlüsselt.
    ''' </summary>
    ''' <remarks></remarks>
    Shared Sub New()
        Dim path As String = ""
        Dim fc As Integer = 0
        Dim ofile As System.IO.File
        Dim oread As System.IO.StreamReader

        '25062018
        If Globals.ConnectionFilename.Length = 0 And Globals.Connection_Overwritten = False Then
            If fc < 2 Then Globals.ConnectionFilename = "edokaconn.cfg"
            Globals.ConnectionFilename = ApplicationPath() + "\" + Globals.ConnectionFilename
        End If


        oread = ofile.OpenText(Globals.ConnectionFilename)
        sConnectionstring = oread.ReadLine
        sConnectionstring = Crypto.DecryptText(sConnectionstring, "HutterundMueller")
        sConnectionstring = Left(sConnectionstring, Len(sConnectionstring) - 1)
        Globals.sConnectionstring = sConnectionstring
        oread.Close()
        '20180625
        Globals.conn.sConnectionString = Globals.sConnectionstring
        If Globals.Connection_Overwritten = False Then Check_DBConn_Overwrite()


        Dim connection As New SqlConnection()
        Dim da As New SqlDataAdapter("Select  beschreibung from pluginparameter where pluginparamnr=1", connection)
        Dim CB As SqlCommandBuilder = New SqlCommandBuilder(da)
        Dim ds As New DataSet()
        Try
            connection.ConnectionString = Globals.sConnectionstring
            connection.Open()
            da.Fill(ds, "params")
            path = ds.Tables(0).Rows(0).Item(0)
        Catch ex As Exception
            path = ""
            CB = Nothing
        End Try

        ds = Nothing
        da = Nothing
        connection.Close()
        connection = Nothing

        Globals.ConnectionFilename = "edokaconn.cfg"
        oread = ofile.OpenText(path + "\" + Globals.ConnectionFilename)
        sConnectionstring = oread.ReadLine
        sConnectionstring = Crypto.DecryptText(sConnectionstring, "HutterundMueller")
        sConnectionstring = Left(sConnectionstring, Len(sConnectionstring) - 1)
        Globals.sConnectionstring = sConnectionstring
        oread.Close()
        Globals.conn.sConnectionString = Globals.sConnectionstring
    End Sub

    Shared Sub Check_DBConn_Overwrite()


        Dim ConnectionFile As String
        ConnectionFile = Check_Connectionchange(Get_Username)
        If ConnectionFile <> "" Then
            Globals.ConnectionFilename = ConnectionFile
            Dim ofile As System.IO.File
            Dim oread As System.IO.StreamReader
            oread = ofile.OpenText(Globals.ConnectionFilename)
            sConnectionstring = oread.ReadLine
            sConnectionstring = Crypto.DecryptText(sConnectionstring, "HutterundMueller")
            sConnectionstring = Left(sConnectionstring, Len(sConnectionstring) - 1)
            Globals.sConnectionstring = sConnectionstring
            Globals.conn.sConnectionString = Globals.sConnectionstring
            oread.Close()
            Globals.Connection_Overwritten = True
        End If
    End Sub

    Shared Function Check_Connectionchange(ByVal tgnummer As String) As String
        Dim scmCmdToExecute As SqlCommand = New SqlCommand()
        Dim i As Integer
        Dim connopen As Boolean = False
        scmCmdToExecute.CommandText = "dbo.[sp_check_Connectionchange]"
        scmCmdToExecute.CommandType = CommandType.StoredProcedure
        scmCmdToExecute.Connection = conn.scoDBConnection
        Try
            scmCmdToExecute.Parameters.Add(New SqlParameter("@tgnummer", SqlDbType.VarChar, 255, ParameterDirection.Input, True, 10, 0, "", DataRowVersion.Proposed, tgnummer))
            scmCmdToExecute.Parameters.Add(New SqlParameter("@Resultat", SqlDbType.VarChar, 1024, ParameterDirection.Output, True, 10, 0, "", DataRowVersion.Proposed, 0))
            Try
                scmCmdToExecute.Connection.Open()
            Catch ex As Exception
                'MsgBox(ex.Message)
            End Try
            scmCmdToExecute.ExecuteNonQuery()
            Return scmCmdToExecute.Parameters("@Resultat").Value
        Catch ex As Exception
            MsgBox(ex.Message)
        Finally

            scmCmdToExecute.Connection.Close()
            scmCmdToExecute.Dispose()
        End Try
    End Function

    Shared Function Get_Username() As String
        Dim ouser As New WindowsPrincipal(WindowsIdentity.GetCurrent)
        With ouser.Identity.Name
            Return (.Substring(.IndexOf("\") + 1))
        End With
    End Function
End Class