Imports System.IO
Imports EgtUILib

Public Class SaveFileDialogVM
   Inherits VMBase

   Private m_Title As String
   Public Property Title As String
      Get
         If IsNothing(m_Title) Then
            If IsFolder Then
               Return EgtMsg(30011)    ' Nome File
            Else
               Return EgtMsg(30010)    ' Nome Cartella
            End If
         Else
            Return m_Title
         End If
      End Get
      Set(value As String)
         m_Title = value
      End Set
   End Property
   Private m_sDirectory As String
   Public Property Directory As String
      Get
         Return m_sDirectory
      End Get
      Set(value As String)
         m_sDirectory = value
      End Set
   End Property

   Private m_sExtension As String = String.Empty
   Public Property Extension As String
      Get
         Return m_sExtension
      End Get
      Set(value As String)
         m_sExtension = value
      End Set
   End Property

   Private m_FileName As String
   Public Property FileName As String
      Get
         Return m_FileName
      End Get
      Set(value As String)
         m_FileName = value
      End Set
   End Property

   Private m_IsFolder As Boolean = False
   Public Property IsFolder As Boolean
      Get
         Return m_IsFolder
      End Get
      Set(value As Boolean)
         m_IsFolder = value
      End Set
   End Property

   Private m_WriteFileName As String
   Public Property WriteFileName As String
      Get
         Return m_WriteFileName
      End Get
      Set(value As String)
         Dim TempName As String = value
         For Each cInvalid In Path.GetInvalidFileNameChars()
            TempName = TempName.Replace(cInvalid, "")
         Next
         If TempName.Length = value.Length Then
            m_WriteFileName = value
         Else
            MessageBox.Show(EgtMsg(31404),
                            EgtMsg(31407),
                            MessageBoxButton.OK, MessageBoxImage.Error)
            'EgtMessageBoxV.Show(Application.Current.MainWindow, EgtMsg(31404),      ' I caratteri \ / : * ? " < > | non sono permessi
            '                                                    EgtMsg(31407),      ' CANCELLA
            '                                                    MessageBoxButton.OK, MessageBoxImage.Error)
         End If
         NotifyPropertyChanged(NameOf(WriteFileName))
      End Set
   End Property

#Region "Messages"

   Public ReadOnly Property SaveMsg As String
      Get
         Return EgtMsg(30001)    ' Salva
      End Get
   End Property
   Public ReadOnly Property CancelMsg As String
      Get
         Return EgtMsg(30002)    ' Annulla
      End Get
   End Property

#End Region

   Public Sub Initialize()
      ' se la cartella d'origine non è stata impostata, esco
      If String.IsNullOrWhiteSpace(m_sDirectory) Then
         Throw New Exception("Exception: Directory is null or white space!")
      End If
      ' se non esiste, esco
      If Not IO.Directory.Exists(m_sDirectory) Then
         Throw New Exception("Exception: Directory doesn't exist!")
      End If
      If String.IsNullOrWhiteSpace(m_sExtension) And Not IsFolder Then
         Throw New Exception("Exception: Extension is null or white space!")
      End If
      ' verifico se è impostato un nome di default
      If Not String.IsNullOrWhiteSpace(m_FileName) Then
         m_WriteFileName = m_FileName
      End If
      NotifyPropertyChanged(NameOf(WriteFileName))
      If IsFolder Then m_sExtension = ""
   End Sub

   Friend Function Save() As Boolean
      Dim sCompleteFileName As String = m_sDirectory & "\" & m_WriteFileName & If(IsFolder, "", m_sExtension)
      If String.IsNullOrWhiteSpace(m_WriteFileName) Then
         MessageBox.Show(EgtMsg(30008), EgtMsg(30007), MessageBoxButton.OK, MessageBoxImage.Error)
         'EgtMessageBoxV.Show(Application.Current.MainWindow, EgtMsg(30008), EgtMsg(30007), MessageBoxButton.OK, MessageBoxImage.Error) ' Il nome non può essere vuoto! - ERRORE 
         Return False
      End If
      If IsFolder Then
         If System.IO.Directory.Exists(sCompleteFileName) Then
            If MessageBox.Show(m_WriteFileName & " " & EgtMsg(30003) & vbCrLf & EgtMsg(30004), EgtMsg(30009), MessageBoxButton.YesNo, MessageBoxImage.Exclamation) <> MessageBoxResult.Yes Then
               'If EgtMessageBoxV.Show(Application.Current.MainWindow, m_WriteFileName & " " & EgtMsg(30003) & vbCrLf & EgtMsg(30004), EgtMsg(30009), MessageBoxButton.YesNo, MessageBoxImage.Exclamation) <> MessageBoxResult.Yes Then ' esiste già - Sostituirlo? - ATTENZIONE
               Return False
            End If
         End If
      Else
         If File.Exists(sCompleteFileName) Then
            If MessageBox.Show(m_WriteFileName & " " & EgtMsg(30003) & vbCrLf & EgtMsg(30004), EgtMsg(30009), MessageBoxButton.YesNo, MessageBoxImage.Exclamation) <> MessageBoxResult.Yes Then
               'If EgtMessageBoxV.Show(Application.Current.MainWindow, m_WriteFileName & " " & EgtMsg(30003) & vbCrLf & EgtMsg(30004), EgtMsg(30009), MessageBoxButton.YesNo, MessageBoxImage.Exclamation) <> MessageBoxResult.Yes Then ' esiste già - Sostituirlo? - ATTENZIONE
               Return False
            End If
         End If
      End If
      m_FileName = sCompleteFileName
      Return True
   End Function

End Class