Imports System.Text.RegularExpressions
Imports Oracle.ManagedDataAccess.Client

Public Class frmSQL_DESIGNER
    Private _windreamPM As ClassPMWindream

    Private Sub TBPM_PROFILE_FINAL_INDEXINGBindingNavigatorSaveItem_Click(sender As Object, e As EventArgs)
        Validate()
        TBPM_PROFILE_FINAL_INDEXINGBindingSource.EndEdit()
        TableAdapterManager.UpdateAll(Me.DD_DMSLiteDataSet)

    End Sub
    Private Sub frmSQL_FINAL_INDICES_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        Try
            lblSaveFinalIndex.Visible = False
            TBPM_CONNECTIONTableAdapter.Connection.ConnectionString = MyConnectionString
            TBPM_CONNECTIONTableAdapter.Fill(DD_DMSLiteDataSet.TBDD_CONNECTION)
            TBPM_PROFILE_FINAL_INDEXINGTableAdapter.Connection.ConnectionString = MyConnectionString

            CURRENT_DT_SQL_CONFIG_TABLE = ClassDatabase.Return_Datatable(String.Format("SELECT T.CONNECTION_ID,T1.BEZEICHNUNG AS 'CON_STRING',ISNULL(T.SQL_UEBERPRUEFUNG,'') AS 'SQL_COMMAND' FROM TBPM_PROFILE_CONTROLS T, TBDD_CONNECTION T1 WHERE T.CONNECTION_ID = T1.GUID AND T.GUID = {0}", CURRENT_CONTROL_ID), True)

            If CURRENT_DT_SQL_CONFIG_TABLE.Rows.Count > 0 Then
                cmbConnection.SelectedValue = CURRENT_DT_SQL_CONFIG_TABLE.Rows(0).Item("CONNECTION_ID")
                cmbConnection.FindStringExact(CURRENT_DT_SQL_CONFIG_TABLE.Rows(0).Item("CON_STRING"))
                SQL_COMMANDTextBox.Text = CURRENT_DT_SQL_CONFIG_TABLE.Rows(0).Item("SQL_COMMAND")
            Else
                SQL_COMMANDTextBox.Text = String.Empty
            End If
            Try
                ' Windream instanziieren
                _windreamPM = New ClassPMWindream()
                'Windream initialisieren (Connection, Session, ... aufbauen)
                _windreamPM.Init()
            Catch ex As Exception
                MsgBox("Fehler bei Initialisieren von windream: " & vbNewLine & ex.Message, MsgBoxStyle.Critical, "Achtung:")
            End Try
            cmbIndexe.Items.Clear()
            Dim indexe = _windreamPM.GetIndicesByObjecttype(CURRENT_OBJECTTYPE)
            If indexe IsNot Nothing Then
                For Each index As String In indexe
                    Me.cmbIndexe.Items.Add(index)
                Next
                Me.cmbIndexe.SelectedIndex = -1
            End If
            If CURRENT_DESIGN_TYPE = "INPUT_INDEX" Then
                Dim sql = String.Format("SELECT NAME FROM TBPM_PROFILE_CONTROLS WHERE PROFIL_ID = {0} AND CTRL_TYPE <> 'LBL' ORDER BY NAME", CURRENT_ProfilGUID)
                Dim DT As DataTable = ClassDatabase.Return_Datatable(sql, True)
                cmbControls.DataSource = DT
                cmbControls.DisplayMember = DT.Columns(0).ColumnName
                cmbControls.Visible = True
                lblControls.Visible = True
                btnAddControl.Visible = True
            Else
                cmbControls.Visible = False
                lblControls.Visible = False
                btnAddControl.Visible = False
            End If
        Catch ex As Exception
            MsgBox("Unexpected Error while loading form: " & ex.Message, MsgBoxStyle.Critical)
        End Try

    End Sub
    Dim CurrentPosition As Integer = 0
    Dim CurrentPlaceholders As New Placeholders()
    Dim CurrentTableType As String
    Dim AtPlaceholderPattern As String = "\[%{1}[a-zA-Z0-9\!\$\&\/\(\)\=\?\,\.\-\;\:_öÖüÜäÄ\#\'\+\*\~\{\}\@\€\<\>\ ]+]{1}" '"\[%[0-9A-Za-z_-]{1,}\]"
    Public Class Placeholders
        Public Property RecordId As Integer
        Public Property ParentRecordId As Integer
        Public Property FormId As Integer
    End Class

    Public Property Value() As String
        Get
            Return SQL_COMMANDTextBox.Text
        End Get
        Set(value As String)
            SQL_COMMANDTextBox.Text = value
        End Set
    End Property
    Private Sub SQL_COMMANDTextBox_TextChanged(sender As Object, e As EventArgs) Handles SQL_COMMANDTextBox.TextChanged, SQL_COMMANDTextBox.Click
        CurrentPosition = SQL_COMMANDTextBox.SelectionStart

        If SQL_COMMANDTextBox.Text.Trim().Count = 0 Then
            dgvPlaceholders.Enabled = False
        Else
            dgvPlaceholders.Enabled = True
        End If

        CheckForPlaceholders()
    End Sub
    Private Sub CheckForPlaceholders()
        Dim count As Integer = 0
        Dim text As String = Me.Value
        Dim atPlaceholderRegex = New Regex(AtPlaceholderPattern, RegexOptions.IgnoreCase)
        Dim matches As MatchCollection = atPlaceholderRegex.Matches(text)

        dgvPlaceholders.Rows.Clear()

        For Each match As Match In matches
            dgvPlaceholders.Rows.Add({match.Value, ""})
        Next
    End Sub

    Private Sub btnTestSQL_Click(sender As Object, e As EventArgs) Handles btnTestSQL.Click
        Dim query As String = SQL_COMMANDTextBox.Text

        For Each row As DataGridViewRow In dgvPlaceholders.Rows
            Dim placeholder As String = row.Cells(0).Value
            Dim replacement As String = row.Cells(1).Value

            ' Wenn Ersetzung ausgefüllt wurde, Platzhalter damit ersetzen
            If Not String.IsNullOrEmpty(replacement) Then
                query = query.Replace(placeholder, replacement)
            Else
                MsgBox("Bitte geben Sie für den Platzhalter " & placeholder & " einen Wert an!", MsgBoxStyle.Exclamation, "Fehlende Platzhalter Ersetzung")
                Exit Sub
            End If
        Next

        Dim ds As DataSet = ExecuteWithConnection(cmbConnection.SelectedValue, query)

        If ds IsNot Nothing Then
            dgvResult.DataSource = ds.Tables(0)
        End If

    End Sub
    Private Function ExecuteWithConnection(connectionId As Integer, sql As String) As DataSet
        Try

            Dim connectionString As String

            connectionString = ClassDatabase.Get_ConnectionString(connectionId)

            If connectionString <> "" Then

                If connectionString.StartsWith("Server=") And connectionString.Contains("Database=") Then
                    Dim sqlConnection As SqlClient.SqlConnection
                    Dim sqlCommand As SqlClient.SqlCommand
                    Dim sqlAdapter As New SqlClient.SqlDataAdapter
                    Dim dataset As New DataSet

                    sqlConnection = New SqlClient.SqlConnection(connectionString)
                    sqlConnection.Open()

                    sqlCommand = New SqlClient.SqlCommand(sql, sqlConnection)

                    sqlAdapter.SelectCommand = sqlCommand
                    sqlAdapter.Fill(dataset)

                    Return dataset
                ElseIf connectionString.Contains("dsn=") Then 'ODBC-Connection
                    Dim sqlConnection As Odbc.OdbcConnection
                    Dim sqlCommand As Odbc.OdbcCommand
                    Dim sqlAdapter As New Odbc.OdbcDataAdapter
                    Dim dataset As New DataSet

                    sqlConnection = New Odbc.OdbcConnection(connectionString)
                    sqlConnection.Open()

                    sqlCommand = New Odbc.OdbcCommand(sql, sqlConnection)

                    sqlAdapter.SelectCommand = sqlCommand
                    sqlAdapter.Fill(dataset)

                    Return dataset
                Else
                    If LogErrorsOnly = True Then ClassLogger.Add(" >> It's an Oracle-Connection (ExecuteWithConnection)", False)
                    Dim sqlConnection As OracleConnection
                    Dim sqlCommand As OracleCommand
                    Dim sqlAdapter As New OracleDataAdapter
                    Dim dataset As New DataSet

                    sqlConnection = New OracleConnection(connectionString)
                    sqlConnection.Open()

                    sqlCommand = New OracleCommand(sql, sqlConnection)

                    sqlAdapter.SelectCommand = sqlCommand
                    sqlAdapter.Fill(dataset)

                    Return dataset
                End If
            Else
                MsgBox("Keine gültige ConnectionID", MsgBoxStyle.Exclamation)
            End If

        Catch ex As Exception
            ClassLogger.Add(" - Unvorhergesehener Fehler bei TestSQL - Fehler: " & vbNewLine & ex.Message)
            MsgBox(ex.Message, MsgBoxStyle.Critical, "Fehler bei TestSQL:")
            Return Nothing
        End Try
    End Function

    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles btnAddIndex.Click
        If cmbIndexe.SelectedIndex <> -1 Then
            Dim val As String = "[%" & cmbIndexe.Text & "]"
            Dim altePosition As Integer = Me.SQL_COMMANDTextBox.SelectionStart()
            Me.SQL_COMMANDTextBox.Text = Me.SQL_COMMANDTextBox.Text.Insert(altePosition, val)
            Me.SQL_COMMANDTextBox.SelectionStart = altePosition + val.Length
        End If

    End Sub

    Private Sub btnSaveSQLCommand_Click(sender As Object, e As EventArgs) Handles btnSaveSQLCommand.Click
        If CURRENT_DESIGN_TYPE = "FINAL_INDEX" Then
            TBPM_PROFILE_FINAL_INDEXINGTableAdapter.cmdUpdateSQL(cmbConnection.SelectedValue, SQL_COMMANDTextBox.Text, Environment.UserName, CURRENT_INDEX_ID)
            lblSaveFinalIndex.Visible = True
            lblSaveFinalIndex.Text = "SQL für finalen Index wurde erfolgreich gespeichert! " & Now.ToString
        ElseIf CURRENT_DESIGN_TYPE = "INPUT_INDEX" Then
            Dim command = SQL_COMMANDTextBox.Text
            command = command.Replace("'", "''")
            Dim upd As String = String.Format("UPDATE TBPM_PROFILE_CONTROLS SET CONNECTION_ID = {0} , SQL_UEBERPRUEFUNG = '{1}' WHERE GUID = {2}", cmbConnection.SelectedValue, command, CURRENT_CONTROL_ID)
            If ClassDatabase.Execute_non_Query(upd, True) Then
                lblSaveFinalIndex.Visible = True
                lblSaveFinalIndex.Text = "SQL für Indexdisplay wurde erfolgreich gespeichert! " & Now.ToString
            Else
                lblSaveFinalIndex.Visible = False
            End If
            Me.Value = SQL_COMMANDTextBox.Text
        End If
    End Sub

    Private Sub btnAddControl_Click(sender As Object, e As EventArgs) Handles btnAddControl.Click
        If cmbControls.SelectedIndex <> -1 Then
            Dim val As String = "[%" & cmbControls.Text & "]"
            Dim altePosition As Integer = Me.SQL_COMMANDTextBox.SelectionStart()
            Me.SQL_COMMANDTextBox.Text = Me.SQL_COMMANDTextBox.Text.Insert(altePosition, val)
            Me.SQL_COMMANDTextBox.SelectionStart = altePosition + val.Length
        End If
    End Sub

    Private Sub btnShowConnections_Click(sender As Object, e As EventArgs) Handles btnShowConnections.Click
        frmConnection.ShowDialog()
    End Sub
End Class