Imports System.Data.Odbc
Public Class ClassDatabase
    Public Shared ConnectionStringRM As String

    Public Shared Function Init()
        Try
            Dim SQLconnect As New SqlClient.SqlConnection
            SQLconnect.ConnectionString = ConnectionStringRM
            SQLconnect.Open()
            SQLconnect.Close()
            Return True
        Catch ex As Exception
            MsgBox("Error in DatabaseInit: " & ex.Message, MsgBoxStyle.Critical)
            Return False
        End Try
    End Function
    Public Shared Function GetConnectionString(id As Integer)
        Dim connectionString As String = ""
        Try
            'Me.TBCONNECTIONTableAdapter.FillByID(Me.DD_DMSLiteDataSet.TBCONNECTION, id)
            Dim DTConnection As DataTable = ClassDatabase.Return_Datatable("SELECT * FROM TBDD_CONNECTION WHERE GUID = " & id)
            If DTConnection.Rows.Count = 1 Then
                Select Case DTConnection.Rows(0).Item("SQL_PROVIDER")
                    Case "MS-SQLServer"
                        If DTConnection.Rows(0).Item("USERNAME") = "WINAUTH" Then
                            connectionString = "Server=" & DTConnection.Rows(0).Item("SERVER") & ";Database=" & DTConnection.Rows(0).Item("DATENBANK") & ";Trusted_Connection=True;"
                        Else
                            connectionString = "Server=" & DTConnection.Rows(0).Item("SERVER") & ";Database=" & DTConnection.Rows(0).Item("DATENBANK") & ";User Id=" & DTConnection.Rows(0).Item("USERNAME") & ";Password=" & DTConnection.Rows(0).Item("USERNAME") & ";Password=" & DTConnection.Rows(0).Item("PASSWORD") & ";"
                        End If
                        ' connectionString = "Server=" & DTConnection.Rows(0).Item("SERVER") & ";Database=" & DTConnection.Rows(0).Item("DATENBANK") & ";User Id=" & DTConnection.Rows(0).Item("USERNAME") & ";Password=" & DTConnection.Rows(0).Item("PASSWORD") & ";"
                    Case Else
                        MsgBox("ConnectionType nicht integriert", MsgBoxStyle.Critical, "Bitte Konfiguration Connection überprüfen!")
                End Select
            End If

        Catch ex As Exception
            MsgBox("Error in GetConnectionString: " & ex.Message, MsgBoxStyle.Critical)
            MsgBox(ex.Message, MsgBoxStyle.Critical, "Error in GetConnectionString:")
        End Try
        Return connectionString
    End Function
    Public Shared Function Return_Datatable(Select_anweisung As String, Optional CallMethod As String = "")
        Try

            Dim SQLconnect As New SqlClient.SqlConnection
            Dim SQLcommand As SqlClient.SqlCommand
            SQLconnect.ConnectionString = ConnectionStringRM
            SQLconnect.Open()
            SQLcommand = SQLconnect.CreateCommand
            SQLcommand.CommandText = Select_anweisung

            Dim adapter1 As SqlClient.SqlDataAdapter = New SqlClient.SqlDataAdapter(SQLcommand)
            Dim dt As DataTable = New DataTable()
            adapter1.Fill(dt)
            SQLconnect.Close()


            Return dt
        Catch ex As Exception
            MsgBox("Error in Return_Datatable: " & ex.Message & vbNewLine & vbNewLine & Select_anweisung & vbNewLine & vbNewLine & "Call-Method: " & CallMethod, MsgBoxStyle.Critical)
          
            Return Nothing
        End Try
    End Function
    Public Shared Function MSSQL_ReturnDTWithConnection(connectionId As Integer, sql As String)
        Try
            Dim regex As New System.Text.RegularExpressions.Regex("(@(\d+)@)")
            Dim match As System.Text.RegularExpressions.Match = regex.Match(sql)

            If match.Success Then
                'Return Nothing
            End If

            Dim connectionString As String
            connectionString = ClassDatabase.GetConnectionString(connectionId)
            If connectionString <> "" Then

                Dim SQLconnect As New SqlClient.SqlConnection
                Dim SQLcommand As SqlClient.SqlCommand
                SQLconnect.ConnectionString = connectionString
                SQLconnect.Open()
                SQLcommand = SQLconnect.CreateCommand
                SQLcommand.CommandText = sql

                Dim adapter1 As SqlClient.SqlDataAdapter = New SqlClient.SqlDataAdapter(SQLcommand)
                Dim dt As DataTable = New DataTable()
                adapter1.Fill(dt)
                SQLconnect.Close()
                Return dt
            Else
                MsgBox("No Connection received for ID: " & connectionId.ToString, MsgBoxStyle.Exclamation)
                Return Nothing
            End If

        Catch ex As Exception
            MsgBox("Unexpected Error in MSSQL_ReturnDTWithConnection:" & vbNewLine & ex.Message & vbNewLine & vbNewLine & sql, MsgBoxStyle.Critical)
            Return Nothing
        End Try
    End Function
    Public Shared Function Return_Datatable_CS(Select_anweisung As String, ConString As String, Optional userInput As Boolean = False)
        Try
            Dim SQLconnect As New SqlClient.SqlConnection
            Dim SQLcommand As SqlClient.SqlCommand
            SQLconnect.ConnectionString = ConString
            SQLconnect.Open()
            SQLcommand = SQLconnect.CreateCommand
            SQLcommand.CommandText = Select_anweisung

            Dim adapter1 As SqlClient.SqlDataAdapter = New SqlClient.SqlDataAdapter(SQLcommand)
            Dim dt As DataTable = New DataTable()
            adapter1.Fill(dt)
            SQLconnect.Close()


            Return dt
        Catch ex As Exception
            If userInput = True Then
                MsgBox("Error in Return_Datatable_CS - Error-Message:" & vbNewLine & ex.Message & vbNewLine & "SQL-Command:" & vbNewLine & Select_anweisung, MsgBoxStyle.Critical)
            End If
            Return Nothing
        End Try
    End Function
    Public Shared Function Return_Datatable_Connection(Select_anweisung As String, connectionId As Integer, Optional userInput As Boolean = False)
        Try
            Dim connectionString As String
            connectionString = ClassDatabase.GetConnectionString(connectionId)
            If connectionString <> "" Then


                Dim SQLconnect As New SqlClient.SqlConnection
                Dim SQLcommand As SqlClient.SqlCommand
                SQLconnect.ConnectionString = connectionString
                SQLconnect.Open()
                SQLcommand = SQLconnect.CreateCommand
                SQLcommand.CommandText = Select_anweisung

                Dim adapter1 As SqlClient.SqlDataAdapter = New SqlClient.SqlDataAdapter(SQLcommand)
                Dim dt As DataTable = New DataTable()
                adapter1.Fill(dt)
                SQLconnect.Close()


                Return dt
            Else
                Return Nothing
            End If

        Catch ex As Exception
            If userInput = True Then
                MsgBox("Error in Return_Datatable_Connection - Error-Message:" & vbNewLine & ex.Message & vbNewLine & "SQL-Command:" & vbNewLine & Select_anweisung, MsgBoxStyle.Critical)
            End If
            Return Nothing
        End Try
    End Function
    Public Shared Function Execute_non_Query(ExecuteCMD As String, Optional Userinput As Boolean = False, Optional timeout As Integer = 120)
        Try

            Dim SQLconnect As New SqlClient.SqlConnection
            Dim SQLcommand As SqlClient.SqlCommand

            SQLconnect.ConnectionString = ConnectionStringRM
            SQLconnect.Open()
            SQLcommand = SQLconnect.CreateCommand
            SQLcommand.CommandTimeout = timeout
            'Update Last Created Record in Foo
            SQLcommand.CommandText = ExecuteCMD

            SQLcommand.ExecuteNonQuery()
            SQLcommand.Dispose()
            SQLconnect.Close()
            Return True
        Catch ex As Exception
            MsgBox("Error in Execute_non_Query: " & ex.Message & vbNewLine & vbNewLine & ExecuteCMD, MsgBoxStyle.Critical)
            Return False
        End Try
    End Function
    Public Shared Function Execute_non_Query_withConn(ExecuteCMD As String, ConnID As Integer)
        Try
            Dim connectionString As String
            connectionString = ClassDatabase.GetConnectionString(ConnID)
            If connectionString <> "" Then
                Dim SQLconnect As New SqlClient.SqlConnection
                Dim SQLcommand As SqlClient.SqlCommand
                SQLconnect.ConnectionString = connectionString
                SQLconnect.Open()
                SQLcommand = SQLconnect.CreateCommand
                'Update Last Created Record in Foo
                SQLcommand.CommandText = ExecuteCMD
                SQLcommand.ExecuteNonQuery()
                SQLcommand.Dispose()
                SQLconnect.Close()

                Return True
            Else
                MsgBox("No ConnectionID for Conn-ID: " & ConnID.ToString, MsgBoxStyle.Exclamation)
                Return Nothing
            End If

        Catch ex As Exception
            MsgBox("Error in Execute_non_Query_withConn: " & ex.Message & vbNewLine & vbNewLine & ExecuteCMD, MsgBoxStyle.Critical)
            Return False
        End Try
    End Function
    Public Shared Function Execute_Scalar(cmdscalar As String, Optional Userinput As Boolean = False)
        Dim result
        Try

            Dim SQLconnect As New SqlClient.SqlConnection
            Dim SQLcommand As SqlClient.SqlCommand
            SQLconnect.ConnectionString = ConnectionStringRM
            SQLconnect.Open()
            SQLcommand = SQLconnect.CreateCommand
            'Update Last Created Record in Foo
            SQLcommand.CommandText = cmdscalar
            result = SQLcommand.ExecuteScalar()
            SQLcommand.Dispose()
            SQLconnect.Close()


            Return result
        Catch ex As Exception

            MsgBox("Error in Execute_Scalar: " & ex.Message & vbNewLine & vbNewLine & cmdscalar, MsgBoxStyle.Critical)


            Return Nothing
        End Try
    End Function

    Public Shared Function Execute_ScalarWithConnection(connectionId As Integer, cmdscalar As String)
        Dim result
        Try
            Dim connectionString As String
            connectionString = ClassDatabase.GetConnectionString(connectionId)
            If connectionString <> "" Then
                Dim SQLconnect As New SqlClient.SqlConnection
                Dim SQLcommand As SqlClient.SqlCommand
                SQLconnect.ConnectionString = connectionString
                SQLconnect.Open()
                SQLcommand = SQLconnect.CreateCommand
                'Update Last Created Record in Foo
                SQLcommand.CommandText = cmdscalar
                result = SQLcommand.ExecuteScalar()
                SQLcommand.Dispose()
                SQLconnect.Close()
                Return result
            Else
                MsgBox("No Connection for ID: " & connectionId & " - ExecuteScalar: " & cmdscalar, MsgBoxStyle.Exclamation)
                Return Nothing
            End If

        Catch ex As Exception
            Return Nothing
        End Try
    End Function
End Class