Imports DevExpress.XtraPrinting.Native
Imports EnvelopeGenerator.CommonServices
Imports GdPicture14.Annotations
Imports EnvelopeGenerator.Domain
Imports EnvelopeGenerator.Domain.Entities

Public Class FieldEditorController
    Inherits BaseController

    Private ReadOnly Document As Document
    Public Property Elements As New List(Of Signature)

    Public Class ElementInfo
        Public ReceiverId As Integer
        Public Page As Integer
        Public Guid As Integer
    End Class

    Public Sub New(pState As State, pDocument As Document)
        MyBase.New(pState)
        Document = pDocument

        ElementModel = New ElementModel(pState)
    End Sub

    Public Function GetElementInfo(pAnnotationTag As String) As ElementInfo
        Dim oTag As String() = pAnnotationTag.Split("|"c)
        Dim oReceiverId = Integer.Parse(oTag(0))
        Dim oPage = Integer.Parse(oTag(1))
        Dim oGuid = Integer.Parse(oTag(2))

        Return New ElementInfo With {
            .Guid = oGuid,
            .Page = oPage,
            .ReceiverId = oReceiverId
        }
    End Function

    Private Function GetElementByPosition(pAnnotation As AnnotationStickyNote, pPage As Integer, pReceiverId As Integer) As Signature
        Dim oElement = Elements.
            Where(Function(e)
                      Return e.Left = CSng(Math.Round(pAnnotation.Left, 5)) And
                      e.Top = CSng(Math.Round(pAnnotation.Top, 5)) And
                      e.Page = pPage And
                      e.ReceiverId = pReceiverId
                  End Function).SingleOrDefault()
        Return oElement
    End Function

    Private Function GetElementByGuid(pGuid As Integer) As Signature
        Dim oElement = Elements.Where(Function(e) pGuid = e.Id).SingleOrDefault()
        Return oElement
    End Function

    Public Function GetElement(pAnnotation As AnnotationStickyNote) As Signature
        Dim oInfo = GetElementInfo(pAnnotation.Tag)

        If oInfo.Guid = -1 Then
            Return GetElementByPosition(pAnnotation, oInfo.Page, oInfo.ReceiverId)
        Else
            Return GetElementByGuid(oInfo.Guid)
        End If
    End Function

    Public Sub AddOrUpdateElement(pAnnotation As AnnotationStickyNote, pPageOrientation As PageOrientation)
        Dim oElement = GetElement(pAnnotation)

        Dim oAnnotationHeight As Single = pAnnotation.Height
        Dim oAnnotationWidth As Single = pAnnotation.Width

        'If pPageOrientation = PageOrientation.Portrait Then
        '    oAnnotationHeight = pAnnotation.Height
        '    oAnnotationWidth = pAnnotation.Width
        'Else
        '    oAnnotationHeight = pAnnotation.Width
        '    oAnnotationWidth = pAnnotation.Height
        'End If


        If oElement IsNot Nothing Then
            oElement.Height = oAnnotationHeight
            oElement.Width = oAnnotationWidth
            oElement.X = pAnnotation.Left
            oElement.Y = pAnnotation.Top
        Else
            Dim oInfo = GetElementInfo(pAnnotation.Tag)

            Elements.Add(New Signature() With {
                .ElementType = Constants.ElementType.Signature,
                .Height = oAnnotationHeight,
                .Width = oAnnotationWidth,
                .X = pAnnotation.Left,
                .Y = pAnnotation.Top,
                .DocumentId = Document.Id,
                .ReceiverId = oInfo.ReceiverId,
                .Page = oInfo.Page
            })
        End If
    End Sub

    Public Function ClearElements(pPage As Integer, pReceiverId As Integer) As IEnumerable(Of Signature)
        Return Elements.
            Where(Function(e) e.Page <> pPage And e.ReceiverId <> pReceiverId).
            ToList()
    End Function

    Public Function LoadElements() As Boolean
        Elements = ElementModel.List(Document.Id)

        If Elements Is Nothing Then
            Return False
        Else Return True
        End If
    End Function

    Public Function SaveElements(pReceiverId As Integer) As Boolean
        Return Elements.
            Where(Function(e) e.ReceiverId = pReceiverId).
            Select(AddressOf SaveElement).
            All(Function(pResult) pResult = True)
    End Function

    Public Function SaveElement(pElement As Signature) As Boolean
        Try
            If pElement.Id > 0 Then
                Return ElementModel.Update(pElement)

            Else
                Return ElementModel.Insert(pElement)
            End If
        Catch ex As Exception
            Logger.Error(ex)
            Return False
        End Try
    End Function

    Public Function DeleteElement(pElement As Signature) As Boolean
        Try
            ' Element aus Datenbank löschen
            If ElementModel.DeleteElement(pElement) Then
                Dim oElement = New List(Of Signature)() From {pElement}
                Elements = Elements.Except(oElement).ToList()
                Return True
            Else
                Logger.Error("Element [{0}] could not be deleted!", pElement.Id)
                Return False
            End If
        Catch ex As Exception
            Logger.Error(ex)
            Return False
        End Try
    End Function
End Class