Imports DevExpress.Data.ExpressionEditor
Imports DevExpress.Utils
Imports DevExpress.XtraEditors
Imports DevExpress.XtraEditors.Controls
Imports DevExpress.XtraLayout
Imports DigitalData.Modules.Base
Imports DigitalData.Modules.Database
Imports DigitalData.Modules.Logging

Public Class ParameterLoader
    Inherits BaseClass

    Private Const LIST_CONTROL_NULL_TEXT As String = "Kein Wert ausgewählt"

    Private Database As MSSQLServer
    Private LayoutControl As LayoutControl

    Public Sub New(pLogConfig As LogConfig, pDatabase As MSSQLServer, pLayoutControl As LayoutControl)
        MyBase.New(pLogConfig)
        Database = pDatabase
        LayoutControl = pLayoutControl
    End Sub

    Private Function GetDefaultValue(pParam As SearchParameter) As Object
        Dim oResult As Object = Nothing

        Select Case pParam.DataType
            Case Constants.DataTypeEnum.Boolean
                Boolean.TryParse(pParam.DefaultValue, oResult)

            Case Constants.DataTypeEnum.Date
                Date.TryParse(pParam.DefaultValue, oResult)

            Case Constants.DataTypeEnum.Integer
                Integer.TryParse(pParam.DefaultValue, oResult)

            Case Else
                oResult = pParam.DefaultValue

        End Select

        Return oResult
    End Function

    Public Sub LoadParameters(pSearch As Search)
        Dim oControl As Control

        For Each oParam As SearchParameter In pSearch.Parameters

            oControl = Nothing
            Select Case oParam.DataType
                Case Constants.DataTypeEnum.Boolean
                    Dim oDefaultValue As Boolean = GetDefaultValue(oParam)
                    Dim oCheckbox = New CheckEdit With {
                        .Text = oParam.Title,
                        .Checked = oDefaultValue
                    }
                    oControl = oCheckbox


                Case Constants.DataTypeEnum.Date
                    Dim oDefaultValue As Date = GetDefaultValue(oParam)

                    If oDefaultValue = Date.MinValue Then
                        oDefaultValue = Now
                    End If

                    Dim oDateEdit As New DateEdit() With {
                        .EditValue = oDefaultValue
                    }
                    oDateEdit.Properties.ShowClear = False

                    oControl = oDateEdit

                Case Constants.DataTypeEnum.String
                    Dim oDefaultValue As String = GetDefaultValue(oParam)

                    Select Case oParam.ItemType
                        Case Constants.ItemTypeEnum.List
                            Dim oCombobox = New ComboBoxEdit() With {
                                .Name = oParam.PatternTitle,
                                .Tag = oParam.PatternTitle,
                                .EditValue = oDefaultValue
                            }
                            Dim oClearButton = GetClearButtonForControl(oCombobox)
                            Dim oItems = oParam.ItemString.Split(";"c).ToList()
                            oCombobox.Properties.Items.AddRange(oItems)
                            oCombobox.Properties.NullText = LIST_CONTROL_NULL_TEXT
                            oCombobox.Properties.Buttons.Add(oClearButton)
                            oControl = oCombobox

                        Case Constants.ItemTypeEnum.SQL
                            Dim oGridCombobox = New LookUpEdit() With {
                                .Name = oParam.PatternTitle,
                                .Tag = oParam.PatternTitle,
                                .EditValue = oDefaultValue
                            }
                            Dim oClearButton = GetClearButtonForControl(oGridCombobox)
                            Dim oSQL = oParam.ItemString
                            Dim oTable = Database.GetDatatable(oSQL)
                            oGridCombobox.Properties.DataSource = oTable
                            oGridCombobox.Properties.DisplayMember = oTable.Columns.Item(0).ColumnName
                            oGridCombobox.Properties.ValueMember = oTable.Columns.Item(0).ColumnName
                            oGridCombobox.Properties.NullText = LIST_CONTROL_NULL_TEXT
                            oGridCombobox.Properties.Buttons.Add(oClearButton)
                            oControl = oGridCombobox

                        Case Else
                            oControl = New TextEdit() With {
                                .EditValue = oDefaultValue
                            }
                    End Select

                Case Else
                    Dim oDefaultValue As Object = GetDefaultValue(oParam)

                    oControl = New TextEdit() With {
                        .EditValue = oDefaultValue
                    }

            End Select

            oControl.Name = oParam.PatternTitle
            oControl.Tag = oParam.PatternTitle

            Dim oItem As LayoutControlItem = LayoutControl.AddItem()
            oItem.Text = oParam.Title
            oItem.Control = oControl
            oItem.TextLocation = Locations.Top
            oItem.TextToControlDistance = 3
            oItem.Padding = New DevExpress.XtraLayout.Utils.Padding(0, 0, 10, 0)
        Next

        If String.IsNullOrEmpty(pSearch.Caption) = False Then

            ' Beschreibung anzeigen
            Dim oMemoEdit = New MemoEdit() With {
                .EditValue = pSearch.Caption,
                .ReadOnly = True,
                .BorderStyle = BorderStyles.NoBorder
            }

            oMemoEdit.Name = "SearchCaption"
            oMemoEdit.Tag = "SearchCaption"
            oMemoEdit.Properties.ScrollBars = ScrollBars.None

            If String.IsNullOrEmpty(pSearch.Comment) = False Then
                oMemoEdit.ToolTip = pSearch.Comment
            End If

            Dim oItem1 As LayoutControlItem = LayoutControl.AddItem()
            oItem1.Text = "Beschreibung:"
            oItem1.Control = oMemoEdit
            oItem1.TextLocation = Locations.Top
            oItem1.TextToControlDistance = 3
            oItem1.Padding = New DevExpress.XtraLayout.Utils.Padding(0, 0, 5, 0)
        End If

    End Sub

    Private Function GetClearButtonForControl(pControl As Control) As EditorButton
        Dim oClearButton As New EditorButton() With {
            .Kind = ButtonPredefines.Clear,
            .Tag = pControl.Name
        }
        AddHandler oClearButton.Click, AddressOf ClearButton_Click
        Return oClearButton
    End Function

    Private Sub ClearButton_Click(sender As Object, e As EventArgs)
        Dim oButton As EditorButton = sender
        Dim oControlName As String = oButton.Tag.ToString

        Dim oControl = LayoutControl.Controls.Find(oControlName, True).SingleOrDefault()

        Select Case oControl.GetType
            Case GetType(LookUpEdit)
                DirectCast(oControl, LookUpEdit).EditValue = Nothing

            Case GetType(ComboBoxEdit)
                DirectCast(oControl, ComboBoxEdit).EditValue = Nothing
        End Select

    End Sub
End Class