Imports System.Globalization
Imports MultiTool.Common.Documents
Imports MultiTool.Common.Documents.DocumentRow
Imports MultiTool.Common.Winline
Imports MultiTool.Common.Winline.Entities
Imports MultiTool.Common.Templates
Imports MultiTool.Common.Constants
Imports DigitalData.Modules.Logging
Imports DigitalData.Modules.Base
Imports DevExpress.XtraEditors
Imports DevExpress.XtraEditors.Repository
Imports DevExpress.XtraEditors.Controls
Imports DevExpress.XtraGrid.Views.Grid

Public Class frmRowEditor
    Private ReadOnly LogConfig As LogConfig
    Private ReadOnly Logger As Logger
    Private ReadOnly FormHelper As FormHelper

    Private ReadOnly _Table As Template.Table
    Private ReadOnly _Columns As List(Of String)
    Private ReadOnly _DataTable As New DataTable
    Private ReadOnly _Accounts As List(Of Account)
    Private ReadOnly _Articles As List(Of Article)
    Private ReadOnly _DocumentKinds As List(Of DocumentKind)
    Private ReadOnly _DocumentRow As DocumentRow

    Private ReadOnly MultilineEditor As New RepositoryItemMemoEdit
    Private ReadOnly AccountPicker As New RepositoryItemSearchLookUpEdit
    Private ReadOnly ArticlePicker As New RepositoryItemSearchLookUpEdit
    Private ReadOnly DocumentKindPicker As New RepositoryItemSearchLookUpEdit
    Private ReadOnly ReadOnlyEditor As New RepositoryItemTextEdit

    Private Const COL_KEY = "KEY"
    Private Const COL_VALUE_ORIGINAL = "VALUE_ORIGINAL"
    Private Const COL_VALUE_EXTERNAL = "VALUE_EXTERNAL"
    Private Const COL_VALUE_FINAL = "VALUE_FINAL"

    Public ReadOnly Property DocumentRow As DocumentRow
        Get
            Return _DocumentRow
        End Get
    End Property

    Public Sub New(pLogConfig As LogConfig, pColumns As List(Of String), pDocumentRow As DocumentRow, pMandator As Mandator, pWinline As WinlineData, pTable As Template.Table)
        InitializeComponent()

        LogConfig = pLogConfig
        Logger = pLogConfig.GetLogger()
        FormHelper = New FormHelper(pLogConfig, Me)

        _Columns = pColumns
        _Accounts = pWinline.Accounts.Where(Function(a) a.Mandator.Id = pMandator.Id).ToList()
        _Articles = pWinline.Articles.Where(Function(a) a.Mandator.Id = pMandator.Id).ToList()
        _DocumentKinds = pWinline.DocumentKinds.Where(Function(k) k.Mandator.Id = pMandator.Id).ToList()
        _DocumentRow = pDocumentRow
        _Table = pTable

        ' TODO: Show text similar to NullText when account number is not in the list/datasource

        AccountPicker.DataSource = _Accounts
        AccountPicker.DisplayMember = "Name"
        AccountPicker.ValueMember = "Id"
        'AccountPicker.NullText = "[Kein Konto gefunden]"

        ArticlePicker.DataSource = _Articles
        ArticlePicker.DisplayMember = "Description"
        ArticlePicker.ValueMember = "Id"
        'ArticlePicker.NullText = "[Kein Artikel gefunden]"

        DocumentKindPicker.DataSource = _DocumentKinds
        DocumentKindPicker.ValueMember = "Id"
        DocumentKindPicker.DisplayMember = "Name"
        'DocumentKindPicker.NullText = "[Keine Belegart gefunden]"

        ReadOnlyEditor.ReadOnly = True

        'DatePicker.CalendarTimeEditing = DevExpress.Utils.DefaultBoolean.False
        'DatePicker.EditMask = "yyyy-MM-dd"
        'DatePicker.Mask.MaskType = DevExpress.XtraEditors.Mask.MaskType.DateTimeAdvancingCaret
        'DatePicker.DisplayFormat.FormatString = "yyyy-MM-dd"
        ' DatePicker.DisplayFormat.FormatType = DevExpress.Utils.FormatType.DateTime
        'DatePicker.DisplayFormat.FormatString = "d"
        'DatePicker.EditFormat.FormatString = "yyyy-MM-dd"
        'DatePicker.EditFormat.FormatType = DevExpress.Utils.FormatType.DateTime
        'DatePicker.EditFormat.FormatString = "d"
        'DatePicker.Mask.UseMaskAsDisplayFormat = True
        'DatePicker.Mask.MaskType = DevExpress.XtraEditors.Mask.MaskType.DateTime
        ' DatePicker.Mask.EditMask = "yyyy-MM-dd"
        'AddHandler DatePicker.ParseEditValue, AddressOf DatePicker_ParseEditValue
        'MaskDateEditor.Mask.EditMask = "yyyy-MM-dd"
        'MaskDateEditor.Mask.MaskType = DevExpress.XtraEditors.Mask.MaskType.Simple
    End Sub

    Private Sub DatePicker_ParseEditValue(sender As Object, e As ConvertEditValueEventArgs)
        If TypeOf sender Is RepositoryItemDateEdit Then
            Debug.WriteLine($"RepoItem # {e.Value} # {e.Value.GetType.Name}")
        ElseIf TypeOf sender Is DateEdit Then
            Debug.WriteLine($"DateEdit # {e.Value} # {e.Value.GetType.Name}")
        End If
    End Sub

    Private Sub frmRowEditor_Load(sender As Object, e As EventArgs) Handles Me.Load
        Try
            Dim oDict = New Dictionary(Of String, FieldValue)

            For Each oColumnName As String In _Columns
                Dim oField = _DocumentRow.Fields.
                    Where(Function(f) f.Key = oColumnName).
                    SingleOrDefault()

                Dim oColumn = _Table.Columns.
                    Where(Function(c) c.Name = oColumnName).
                    SingleOrDefault()

                ' Only Show Columns that are set to visible
                If oColumn?.Config?.IsVisible = False Then
                    Continue For
                End If

                If oField.Value Is Nothing Then
                    ' TODO: Do we need to create a new field value here?
                    ' aka. do we need to configure fieldvalue from column settings
                    oDict.Add(oColumnName, New FieldValue(LogConfig))
                Else
                    oDict.Add(oColumnName, oField.Value)
                End If

            Next

            _DataTable.Columns.Clear()
            _DataTable.Columns.Add(COL_KEY)
            _DataTable.Columns.Add(COL_VALUE_ORIGINAL)
            _DataTable.Columns.Add(COL_VALUE_EXTERNAL)
            _DataTable.Columns.Add(COL_VALUE_FINAL)

            For Each oKV In oDict
                _DataTable.Rows.Add(oKV.Key, oKV.Value.Original, oKV.Value.External, oKV.Value.Final)
            Next

            GridControl1.DataSource = _DataTable
        Catch ex As Exception
            FormHelper.ShowError(ex, My.Resources.frmShared.Laden_des_Formulars)

        End Try
    End Sub

    Private Sub btnSave_ItemClick(sender As Object, e As DevExpress.XtraBars.ItemClickEventArgs) Handles btnSave.ItemClick
        SaveAndClose()
    End Sub

    Private Sub SaveAndClose()
        Try
            GridView1.CloseEditor()

            For Each oRow As DataRow In _DataTable.Rows
                Dim oField = _DocumentRow.Fields.
                    Where(Function(f) f.Key = oRow.Item(COL_KEY)).
                    SingleOrDefault()

                ' TODO: Why do we need to create new fieldvalues here?
                ' aka. why would the be a value for which no fieldvalue exists yet?
                ' If there are (non-virtual) fields in the template which do not have a value yet,
                ' this might happen.
                If oField.Key Is Nothing Then
                    oField = New KeyValuePair(Of String, FieldValue)(oRow.Item(COL_KEY), New FieldValue(LogConfig))
                End If

                Dim oFieldValue As FieldValue = oField.Value
                Dim oValueFromGrid As String = ObjectEx.NotNull(oRow.Item(COL_VALUE_FINAL), String.Empty)

                ' Do the dirtiest date validation of all times
                If oField.Value.DataType = ColumnType.Date And oValueFromGrid.Length > 0 Then
                    If TryParseDate(oValueFromGrid) Is Nothing Then
                        MsgBox(String.Format(My.Resources.frmRowEditorExtra.Datumswert_für___0___enthält_einen_ungüligen_Wert, oField.Key), MsgBoxStyle.Exclamation, Text)
                        Exit Sub
                    End If
                End If

                ' If the value was changed
                If Not oFieldValue.Final.Equals(oValueFromGrid) Then
                    ' If new value is not empty, any error will be removed.
                    ' Could cause problems in the future because a value might not equal to 'no error'.
                    'If oValueFromGrid <> String.Empty Then
                    '    oFieldValue.Error = FieldError.None
                    'End If

                    ' 03.12.21: For now we always remove the error if ANYTHING changed about the field
                    oFieldValue.Errors.Clear()

                    ' Save the grid value to the Field
                    oFieldValue.SetValue("Final", oValueFromGrid.Trim())

                    If _DocumentRow.Fields.ContainsKey(oField.Key) Then
                        _DocumentRow.Fields.Item(oField.Key) = oFieldValue
                    Else
                        _DocumentRow.Fields.Add(oField.Key, oFieldValue)
                    End If
                End If

            Next

            DialogResult = DialogResult.OK
            Close()
        Catch ex As Exception
            MsgBox("")
            Logger.Error(ex)
        End Try
    End Sub

    Private Function TryParseDate(pValue As String)
        Try
            Return Date.ParseExact(pValue, "yyyy-MM-dd", CultureInfo.InvariantCulture)
        Catch ex As Exception
            Return Nothing
        End Try
    End Function

    Private Sub btnApplyFromWinline_ItemClick(sender As Object, e As DevExpress.XtraBars.ItemClickEventArgs) Handles btnApplyFromWinline.ItemClick
        CopyValueToFinalColumn(COL_VALUE_EXTERNAL)
    End Sub

    Private Sub btnApplyFromOriginal_ItemClick(sender As Object, e As DevExpress.XtraBars.ItemClickEventArgs) Handles btnApplyFromOriginal.ItemClick
        CopyValueToFinalColumn(COL_VALUE_ORIGINAL)
    End Sub

    Private Sub btnClearValue_ItemClick(sender As Object, e As DevExpress.XtraBars.ItemClickEventArgs) Handles btnClearValue.ItemClick
        CopyValueToFinalColumn(String.Empty)
    End Sub

    Private Sub CopyValueToFinalColumn(pSourceColumnNameOrValue As String)
        Dim oSelectedRow As DataRow = GridView1.GetDataRow(GridView1.FocusedRowHandle)

        If oSelectedRow Is Nothing Then
            Exit Sub
        End If

        Select Case pSourceColumnNameOrValue
            Case COL_VALUE_EXTERNAL
                oSelectedRow.Item(COL_VALUE_FINAL) = oSelectedRow.Item(pSourceColumnNameOrValue)

            Case COL_VALUE_ORIGINAL
                oSelectedRow.Item(COL_VALUE_FINAL) = oSelectedRow.Item(pSourceColumnNameOrValue)

            Case Else
                oSelectedRow.Item(COL_VALUE_FINAL) = pSourceColumnNameOrValue

        End Select

        oSelectedRow.AcceptChanges()
        GridView1.CloseEditor()
        GridView1.RefreshData()
    End Sub

    Private Sub GridView1_CustomRowCellEdit(sender As Object, e As CustomRowCellEditEventArgs) Handles GridView1.CustomRowCellEdit
        Dim oDataRow As DataRow = GridView1.GetDataRow(e.RowHandle)
        Dim oKey As String = oDataRow.Item(COL_KEY)

        If e.Column.FieldName = COL_VALUE_ORIGINAL Or e.Column.FieldName = COL_VALUE_FINAL Then
            If e.CellValue.ToString.Length > 100 Then
                e.RepositoryItem = MultilineEditor
            End If
        End If

        If e.Column.FieldName = COL_VALUE_FINAL Then
            Dim oColumn = _Table.Columns.
                Where(Function(c) c.Name = oKey).
                SingleOrDefault()


            If oColumn Is Nothing Then
                Exit Sub
            End If

            If oColumn.Config?.Functions.Any(Function(f) f.Name = FUNCTION_GLN) Then
                e.RepositoryItem = AccountPicker
            End If

            If oColumn.Config?.Functions.Any(Function(f) f.Name = FUNCTION_EAN) Then
                e.RepositoryItem = ArticlePicker
            End If

            If e.CellValue.ToString.Length > 30 Then
                e.RepositoryItem = MultilineEditor
            End If

            If oColumn.Config?.IsReadOnly Then
                e.RepositoryItem = ReadOnlyEditor
            End If
        End If
    End Sub

    Private Sub GridView1_CustomDrawCell(sender As Object, e As DevExpress.XtraGrid.Views.Base.RowCellCustomDrawEventArgs) Handles GridView1.CustomDrawCell
        Dim oDataRow As DataRow = GridView1.GetDataRow(e.RowHandle)
        Dim oKey As String = oDataRow.Item(COL_KEY)
        Dim oValue As String = ObjectEx.NotNull(oDataRow.Item(COL_VALUE_FINAL), String.Empty)
        Dim oColumn = _Table.Columns.
            Where(Function(c) c.Name = oKey).
            SingleOrDefault()
        Dim oField = _DocumentRow.Fields.
            Where(Function(f) f.Key = oKey).
            SingleOrDefault()

        If e.Column.FieldName = COL_VALUE_FINAL Then
            If oColumn IsNot Nothing Then
                If oColumn.Config?.IsReadOnly Then
                    e.Appearance.BackColor = Color.LightGray
                End If
            End If

            If oField.Value.HasError Then
                e.Appearance.BackColor = Color.LightCoral
            End If
        End If
    End Sub

    Private Sub frmRowEditor_KeyDown(sender As Object, e As KeyEventArgs) Handles Me.KeyDown
        If e.KeyCode = Keys.F5 Then
            SaveAndClose()
        End If
    End Sub
End Class