Imports System.Data.SQLite
Public Class FrmZuteilung

    Dim datenbank As String = My.Settings.LPConnectionString
    Dim allg As New clsAllgemein

    Private Sub FrmZuteilung_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim ds As New DataSet
        Dim daten As New DataSet
        Dim SQLconnect As New SQLite.SQLiteConnection()
        SQLconnect.ConnectionString = Globals.datenbank
        SQLconnect.Open()

        Dim da As New SQLiteDataAdapter("", SQLconnect)
        Dim sqlcmd As New SQLiteCommand
        sqlcmd.Connection = SQLconnect

        sqlcmd.CommandType = CommandType.Text
        sqlcmd.CommandText = "delete from zuteilung"
        sqlcmd.ExecuteNonQuery()

        sqlcmd.CommandType = CommandType.Text
        sqlcmd.CommandText = "SELECT * FROM FirmaBeruf where aktiv=1 order by berufnr, zeitnr, firmanr"
        da.SelectCommand = sqlcmd
        da.Fill(ds, "FirmaBeruf")
        daten.Tables.Add(ds.Tables(0).Copy)
        ds.Tables.Clear()
        If Me.chkSelection.Checked = True Then
            sqlcmd.CommandText = allg.Get_SQLAbfrage_Statement(8)
        Else
            sqlcmd.CommandText = allg.Get_SQLAbfrage_Statement(9)
        End If

        'sqlcmd.CommandText = "SELECT * FROM SchuelerBeruf where aktiv=1 order by prioritaet, berufnr "
        da.SelectCommand = sqlcmd
        da.Fill(ds, "SchuelerBeruf")
        daten.Tables.Add(ds.Tables(0).Copy)

        Me.ProgressBar1.Value = 0
        Me.ProgressBar1.Minimum = 0
        Me.ProgressBar1.Maximum = daten.Tables("SchuelerBeruf").Rows.Count * 2

        daten.Tables("FirmaBeruf").Columns.Add("Zugeteilt")
        For Each r As DataRow In daten.Tables("FirmaBeruf").Rows
            r.Item("Zugeteilt") = 0
        Next

        'Prio 1
        For Each r As DataRow In daten.Tables("SchuelerBeruf").Rows
            Me.ProgressBar1.Value = Me.ProgressBar1.Value + 1
            Application.DoEvents()
            If r.Item("Prioritaet") = 1 Then
                Zuteilung(r, daten.Tables("FirmaBeruf"))
            End If
        Next
        For Each r As DataRow In daten.Tables("SchuelerBeruf").Rows
            Me.ProgressBar1.Value = Me.ProgressBar1.Value + 1
            Application.DoEvents()
            If r.Item("Prioritaet") <> 1 Then
                Zuteilung(r, daten.Tables("FirmaBeruf"))
            End If
        Next
        sqlcmd.Dispose()
        SQLconnect.Close()
        MsgBox("Die Automatische Zuteilung wurde abgeschlossen.")
        Me.Close()
    End Sub

    Private Sub Zuteilung(ByRef r As DataRow, ByRef FirmaBeruf As DataTable)
        Dim dv As New DataView(FirmaBeruf, "BerufNr=" & r.Item("BerufNr") & " and zugeteilt < anzahl", "", DataViewRowState.CurrentRows)
 

        Dim lpdataset As New LPDataSet
        Dim lpzuteilungadapter = New LPDataSetTableAdapters.ZuteilungTableAdapter

        Dim i As Integer = 0
        Dim counter As Integer = 0
        Dim counter1 As Integer = 1
        Dim zuteilungrow As LPDataSet.ZuteilungRow
        If dv.Count > 0 Then
            For i = 0 To dv.Count - 1
                Dim ds As New DataSet
                Dim daten As New DataSet
                Dim SQLconnect As New SQLite.SQLiteConnection()
                SQLconnect.ConnectionString = Globals.Datenbank
                SQLconnect.Open()
                Dim da As New SQLiteDataAdapter("", SQLconnect)
                Dim sqlcmd As New SQLiteCommand
                sqlcmd.Connection = SQLconnect

                sqlcmd.CommandType = CommandType.Text
                sqlcmd.CommandText = "select count(*) from zuteilung where schuelernr=" + r.Item("Schuelernr").ToString + " and zeitnr=" + dv.Item(i).Item("Zeitnr").ToString
                da.SelectCommand = sqlcmd
                da.Fill(ds, "Counter")
                counter = ds.Tables(0).Rows(0).Item(0)
                If counter = 0 Then Exit For

            Next


            Dim ds1 As New DataSet
            Dim SQLconnect1 As New SQLite.SQLiteConnection()
            SQLconnect1.ConnectionString = Globals.Datenbank
            SQLconnect1.Open()
            Dim da1 As New SQLiteDataAdapter("", SQLconnect1)
            Dim sqlcmd1 As New SQLiteCommand
            sqlcmd1.Connection = SQLconnect1

            sqlcmd1.CommandType = CommandType.Text
            sqlcmd1.CommandText = "select count(*) from zuteilung where schuelernr=" + r.Item("Schuelernr").ToString
            da1.SelectCommand = sqlcmd1
            da1.Fill(ds1, "Counter")
            counter1 = ds1.Tables(0).Rows(0).Item(0)
            If counter1 > 2 Then Exit Sub


            If counter <> 0 Then Exit Sub
            zuteilungrow = lpdataset.Zuteilung.NewRow
            zuteilungrow.FirmaBerufNr = dv.Item(i).Item("FirmaBerufNr")
            zuteilungrow.SchuelerBerufNr = r.Item("SchuelerBerufnr")
            zuteilungrow.SchuelerNr = r.Item("SchuelerNr")
            zuteilungrow.Zeitnr = dv.Item(i).Item("Zeitnr")
            zuteilungrow.Ansprechpartnernr = dv.Item(i).Item("Ansprechpartnernr")
            zuteilungrow.Prioritaet = r.Item("Prioritaet")

            zuteilungrow.aktiv = True
            zuteilungrow.erstellt_am = Now
            zuteilungrow.mutiert_am = Now
            zuteilungrow.Bemerkung = ""
            lpdataset.Zuteilung.AddZuteilungRow(zuteilungrow)
            lpzuteilungadapter.Update(lpdataset.Zuteilung)
            dv.Item(i).Item("Zugeteilt") = dv.Item(i).Item("Zugeteilt") + 1
        End If

    End Sub

    Private Sub Label2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label2.Click

    End Sub

    Private Sub Label1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Label1.Click

    End Sub

    Private Sub Button2_Click(sender As System.Object, e As System.EventArgs) Handles Button2.Click
        Me.Close()
    End Sub
End Class