Imports System.Collections.ObjectModel
Imports EgtWPFLib5

Public Class UpdateProductPageVM
   Inherits VMBase

#Region "FIELDS & PROPERTIES"

   Private m_Product As Product
   Public Property Product As Product
      Get
         Return m_Product
      End Get
      Set(value As Product)
         m_Product = value
      End Set
   End Property

   Private m_NewProductName As String
   Public Property NewProductName As String
      Get
         Return m_NewProductName
      End Get
      Set(value As String)
         m_NewProductName = value
         NotifyPropertyChanged("NewProductName")
      End Set
   End Property

   Private m_NewProductNumber As Integer
   Public Property NewProductNumber As Integer
      Get
         Return m_NewProductNumber
      End Get
      Set(value As Integer)
         m_NewProductNumber = value
         NotifyPropertyChanged("NewProductNumber")
      End Set
   End Property

   Private m_NewOption1 As New ObservableCollection(Of KeyOption)
   Public ReadOnly Property NewOption1 As ObservableCollection(Of KeyOption)
      Get
         Return m_NewOption1
      End Get
   End Property

   Private m_NewOption2 As New ObservableCollection(Of KeyOption)
   Public ReadOnly Property NewOption2 As ObservableCollection(Of KeyOption)
      Get
         Return m_NewOption2
      End Get
   End Property

   ' Definizione comandi
   Private m_cmdUpdate As Command
   Private m_cmdCancel As Command

#Region "Messages"

   Public ReadOnly Property UpdateProductMsg As String
      Get
         Return "Update product"
      End Get
   End Property

   Public ReadOnly Property ProductNameMsg As String
      Get
         Return "Name"
      End Get
   End Property

   Public ReadOnly Property ProductNumberMsg As String
      Get
         Return "Number"
      End Get
   End Property

   Public ReadOnly Property Option1Msg As String
      Get
         Return "Option 1"
      End Get
   End Property

   Public ReadOnly Property Option2Msg As String
      Get
         Return "Option 2"
      End Get
   End Property

   Public ReadOnly Property UpdateMsg As String
      Get
         Return "Update"
      End Get
   End Property

   Public ReadOnly Property CancelMsg As String
      Get
         Return "Close"
      End Get
   End Property


#End Region    ' Messages

#End Region    ' FIELDS & PROPERTIES

#Region "CONSTRUCTOR"

   Sub New()
      ' Imposto riferimento nella mappa
      Map.SetRefUpdateProductPageVM(Me)
   End Sub

#End Region    ' CONSTRUCTOR

#Region "METHODS"

   Friend Sub InitUpdateProductPage()

      Dim Query As String = "SELECT * FROM " & DB_PRODUCT &
            " WHERE " & DB_PRODUCTID & " LIKE " & Product.ProductID
      NewProductName = ManageDb.ExecuteProductQuery(Query)(0).ProductName
      NotifyPropertyChanged("NewProductName")
      NewProductNumber = ManageDb.ExecuteProductQuery(Query)(0).ProductNumber
      NotifyPropertyChanged("NewProductNumber")

      '' Svuoto campi
      'NewProductName = Nothing
      'NotifyPropertyChanged("NewProductName")
      'NewProductNumber = Nothing
      'NotifyPropertyChanged("NewProductNumber")


      ' Cancello liste opzioni
      LoadOptions(1, NewOption1)
      LoadOptions(2, NewOption2)

      NotifyPropertyChanged("NewOption1")
      NotifyPropertyChanged("NewOption2")

   End Sub

   Private Sub LoadOptions(nIndex As Integer, ByRef OptionList As ObservableCollection(Of KeyOption))
      ' Cancello opzioni
      OptionList.Clear()
      ' Carico opzioni
      Dim OptionIndex As Integer = 1
      Dim OptionName As String = String.Empty
      GetMainPrivateProfileString(m_Product.ProductName & " - Option" & nIndex, "Option" & OptionIndex, "", OptionName)
      While Not String.IsNullOrWhiteSpace(OptionName)
         OptionList.Add(New KeyOption(False, True, OptionName))
         OptionIndex += 1
         GetMainPrivateProfileString(m_Product.ProductName & " - Option" & nIndex, "Option" & OptionIndex, "", OptionName)
      End While
      ' Se ho caricato delle opzioni
      If OptionList.Count > 0 Then
         ' Verifico se ci sono opzioni del prodotto
         Dim ProductOption As Integer = If(nIndex = 1, m_Product.ProductOption1, m_Product.ProductOption2)
         Dim nBinaryIndex As Integer = 1
         For I = 0 To OptionList.Count - 1
            If (ProductOption And nBinaryIndex) <> 0 Then
               OptionList(I).IsChecked = True
               OptionList(I).IsEnabled = True
            End If
            nBinaryIndex *= 2
         Next
      End If
   End Sub

   Private Function CalcOptionDec(OptionList As ObservableCollection(Of KeyOption)) As Integer
      Dim nDecOption As Integer = 0
      Dim nBinaryIndex As Integer = 1
      For I As Integer = 0 To OptionList.Count() - 1
         If OptionList(I).IsChecked Then
            nDecOption += nBinaryIndex
         End If
         nBinaryIndex *= 2
      Next
      Return nDecOption
   End Function

#End Region    ' METHODS

#Region "COMMANDS"

#Region "Update"

   ' Returns a command that manage the MainWindow_Unloaded command
   Public ReadOnly Property UpdateProduct_Command As ICommand
      Get
         If m_cmdUpdate Is Nothing Then
            m_cmdUpdate = New Command(AddressOf Update)
         End If
         Return m_cmdUpdate
      End Get
   End Property

   Public Sub Update(ByVal param As Object)
      'Calcolo valore decimale opzione1
      Dim nDecOption1 As Integer = CalcOptionDec(m_NewOption1)
      Dim nDecOption2 As Integer = CalcOptionDec(m_NewOption2)
      If Not String.IsNullOrWhiteSpace(NewProductName) OrElse
         Not NewProductNumber = 0 OrElse
         Not nDecOption1 = Product.ProductOption1 OrElse
         Not nDecOption2 = Product.ProductOption2 Then
         ' Cerco nella tabella Product
         Dim Query As String = "UPDATE " & DB_PRODUCT
         Dim bFirstWhere As Boolean = True
         If Not String.IsNullOrWhiteSpace(NewProductName) OrElse
            Not NewProductNumber = 0 OrElse
            Not IsNothing(nDecOption1) OrElse
            Not IsNothing(nDecOption2) Then
            Query &= " SET "
            If Not String.IsNullOrWhiteSpace(NewProductName) Then
               EvalWhere(bFirstWhere, Query)
               Query &= DB_PRODUCTNAME & " = '" & NewProductName & "' "
            End If
            If Not NewProductNumber = 0 Then
               EvalWhere(bFirstWhere, Query)
               Query &= DB_PRODUCTNUMBER & " = '" & NewProductNumber & "' "
            End If
            If Not nDecOption1 = Product.ProductOption1 Then
               EvalWhere(bFirstWhere, Query)
               Query &= DB_PRODUCTOPTION1 & " = '" & nDecOption1 & "' "
            End If
            If Not nDecOption2 = Product.ProductOption2 Then
               EvalWhere(bFirstWhere, Query)
               Query &= DB_PRODUCTOPTION2 & " = '" & nDecOption2 & "' "
            End If
            Query &= "WHERE " & DB_PRODUCTID & " = " & Product.ProductID
            Query = Query.TrimEnd(","c, " "c)
         End If
         ManageDb.ExecuteQuery(Query)

         ' Manage the MainWindow_Unloaded event. This method is invoked by the cmdMainWindow_Unloaded.
         Map.refMainWindowVM.SelProjectMode = MainWindowVM.ProjectModeOpt.SEARCHPRODUCT
      Else
         MessageBox.Show("Completare almeno un campo presente")
      End If

   End Sub

   Private Sub EvalWhere(ByRef bFirst As Boolean, ByRef Query As String)
      If bFirst Then
         bFirst = False
      Else
         Query &= ", "
      End If
   End Sub


#End Region    ' Update

#Region "Cancel"

   ' Returns a command that manage the MainWindow_Unloaded command
   Public ReadOnly Property Cancel_Command As ICommand
      Get
         If m_cmdCancel Is Nothing Then
            m_cmdCancel = New Command(AddressOf Cancel)
         End If
         Return m_cmdCancel
      End Get
   End Property

   Public Sub Cancel(ByVal param As Object)

      ' Manage the MainWindow_Unloaded event. This method is invoked by the cmdMainWindow_Unloaded.
      Map.refMainWindowVM.SelProjectMode = MainWindowVM.ProjectModeOpt.SEARCHPRODUCT
   End Sub

#End Region    ' Cancel

#End Region    'COMMANDS

End Class