Imports System.Collections.ObjectModel
Imports System.Threading
Imports System.Windows.Threading
Imports System.Runtime.InteropServices
Imports System.Math
Imports EgtUILib

Namespace EgtCAM5

   Public Class MainWindowViewModel
      Inherits ViewModelBase

#Region "FIELDS"

      ' EGALTECH ENVIRONMENT FIELDS

      Private m_objMutex As New Mutex
      '' '' '' '' '' ''Private m_nInstance As Integer = 0
      Private m_sDataRoot As String = String.Empty
      Private m_sConfigDir As String = String.Empty
      Private m_nDebug As Integer = 0
      ' Opzioni abilitate dalla licenza attiva associata alla chiave
      'Private m_nKeyOptions As UInteger
      Friend Enum KEY_OPT As UInteger
         BASE = 1
      End Enum
      Private m_ProcEventsCallback As New ProcessEventsCallback(AddressOf ProcessEvents)
      Private m_OutTextCallback As New OutTextCallback(AddressOf OutText)


      ' EGALTECH ENVIRONMENT FIELDS WITH PROPERTY

      ' GRAPHICAL FIELDS
      ' Event commands
      ' MainWindow ContentRendered Event

      Private m_Title As String
      Public Property Title As String
         Get
            Return m_Title
         End Get
         Set(value As String)
            If value <> m_Title Then
            m_Title = value
            OnPropertyChanged("Title")
            End If
         End Set
      End Property

      Private m_AboutBox As Window
      Public ReadOnly Property AboutBox As Window
         Get
            Return New AboutBoxView
         End Get
      End Property

      Private m_cmdMainWindow_ContentRendered As ICommand
      ' MainWindow Activated Event
      Private m_cmdMainWindow_Activated As ICommand
      ' MainWindow Deactivated Event
      Private m_cmdMainWindow_Deactivated As ICommand
      ' MainWindow Closing Event
      Private m_cmdMainWindow_Closing As ICommand
      Private m_cmdCloseApplication As ICommand

      ' GRAPHICAL ELEMENTS
      Private m_TopCommandBar As TopCommandBarView
      Public ReadOnly Property TopCommandBar As TopCommandBarView
         Get
            If IsNothing(m_TopCommandBar) Then
               m_TopCommandBar = New TopCommandBarView
               m_TopCommandBar.DataContext = New TopCommandBarViewModel
            End If
            Return m_TopCommandBar
         End Get
      End Property

      ' GRAPHICAL FIELDS WITH PROPERTY

      Private m_StatusBar As StatusBarView
      Private m_bfirst As Boolean = True
      Public ReadOnly Property StatusBar As StatusBarView
         Get
            If m_bfirst Then
               m_bfirst = False
               m_StatusBar = New StatusBarView
               m_StatusBar.DataContext = New StatusBarViewModel
            End If
            Return m_StatusBar
         End Get
      End Property

      Private m_ProjectPage As ProjectView
      Private m_bFirstProjectPage As Boolean = True
      Public ReadOnly Property ProjectPage As ProjectView
         Get
            If m_bFirstProjectPage Then
               m_bFirstProjectPage = False
               m_ProjectPage = New ProjectView
               m_ProjectPage.DataContext = New ProjectViewModel
            End If
            Return m_ProjectPage
         End Get
      End Property

#End Region

#Region "CONSTRUCTOR"

      Sub New()
         ' INITIALIZE EGALTECH ENVIRONMENT
         InitializeEgtEnvironment()

         RegisterMyMessages()

         AddHandler Application.Current.MainWindow.KeyDown, AddressOf MainWindow_KeyDown
         ' INITIALIZE GRAPHICS
         'TabList.Add(New ProjectViewModel)
         'TabList.Add(New ToolsDbViewModel)
         'TabList.Add(New MachiningsDbViewModel)
         'SelectedTab = TabList(0)
         'OnPropertyChanged("SelectedTab")
      End Sub

#End Region    ' Constructor

#Region "COMMANDS"

#Region "CloseApplicationCommand"

      ''' <summary>
      ''' Returns a command that manage the MainWindow_Unloaded command
      ''' </summary>
      Public ReadOnly Property CloseApplicationCommand() As ICommand
         Get
            If m_cmdCloseApplication Is Nothing Then
               m_cmdCloseApplication = New RelayCommand(AddressOf CloseApplication, AddressOf CanCloseApplication)
            End If
            Return m_cmdCloseApplication
         End Get
      End Property

      ''' <summary>
      ''' Manage the MainWindow_Unloaded event. This method is invoked by the cmdMainWindow_Unloaded.
      ''' </summary>
      Public Sub CloseApplication(ByVal param As Object)
         '' Gestisco eventuale file corrente modificato
         Application.Msn.NotifyColleagues(Application.MANAGEMODIFIED)
         If m_allowWindowToClose Then
            Application.Msn.NotifyColleagues(Application.CLOSEAPPLICATION)
            ' Salvo posizione Form (se non minimizzato)
            If Application.Current.MainWindow.WindowState <> WindowState.Minimized Then
               Dim WinPos As New WinPos
               WindowToWinPos(Application.Current.MainWindow, WinPos)
               WritePrivateProfileWinPos(S_GENERAL, K_WINPLACE, WinPos.nFlag, WinPos.nLeft, WinPos.nTop, WinPos.nWidth, WinPos.nHeight)
            End If
            ' Terminazione generale di EgtInterface
            EgtExit()
            ' Rilascio mutex
            m_objMutex.Close()
            ' Aggiorno istanze usate
            Dim nTmp As Integer = GetPrivateProfileInt(S_GENERAL, K_INSTANCES, 0)
            nTmp -= (1 << (m_nInstance - 1))
            WritePrivateProfileString(S_GENERAL, K_INSTANCES, nTmp.ToString())
            ' Salvo impostazione macchina corrente
            Application.Msn.NotifyColleagues(Application.SAVECURRENTMACHINE)
            '' Disabilito gestore Idle
            'RemoveHandler Application.Idle, AddressOf Application_Idle
            Application.Current.MainWindow.Close()
         End If
      End Sub

      ''' <summary>
      ''' Returns true if the application can be closed
      ''' </summary>
      Private Function CanCloseApplication(ByVal param As Object) As Boolean
         '' Impedisco uscita se script in esecuzione
         'If m_bScriptRunning Then
         '   m_bStopScript = True
         '   E.Cancel = True
         '   Return
         'End If
         Return True
      End Function

#End Region ' CloseApplicationCommand

#Region "cmdMainWindow_ContentRendered"

      ''' <summary>
      ''' Returns a command that manage the MainWindow_ContentRendered command
      ''' </summary>
      Public ReadOnly Property cmdMainWindow_ContentRendered() As ICommand
         Get
            If m_cmdMainWindow_ContentRendered Is Nothing Then
               m_cmdMainWindow_ContentRendered = New RelayCommand(AddressOf MainWindow_ContentRendered)
            End If
            Return m_cmdMainWindow_ContentRendered
         End Get
      End Property

      ''' <summary>
      ''' Manage the MainWindow_ContentRendered event. This method is invoked by the cmdMainWindow_ContentRendered.
      ''' </summary>
      Public Sub MainWindow_ContentRendered(ByVal param As Object)
         ' Notify the ContentRendered event
         Application.Msn.NotifyColleagues(Application.MAINWINDOW_CONTENTRENDERED)

      End Sub

#End Region ' ContentRendered Command

#Region "cmdMainWindow_Activated"

      ''' <summary>
      ''' Returns a command that manage the MainWindow_ContentRendered command
      ''' </summary>
      Public ReadOnly Property cmdMainWindow_Activated() As ICommand
         Get
            If m_cmdMainWindow_Activated Is Nothing Then
               m_cmdMainWindow_Activated = New RelayCommand(AddressOf MainWindow_Activated)
            End If
            Return m_cmdMainWindow_Activated
         End Get
      End Property

      ''' <summary>
      ''' Manage the MainWindow_ContentRendered event. This method is invoked by the cmdMainWindow_ContentRendered.
      ''' </summary>
      Public Sub MainWindow_Activated(ByVal param As Object)
         ' Notify the ContentRendered event
         Application.Msn.NotifyColleagues(Application.MAINWINDOW_ACTIVATED)
      End Sub

#End Region ' Activated Command

#Region "cmdMainWindow_Deactivated"

      ''' <summary>
      ''' Returns a command that manage the MainWindow_ContentRendered command
      ''' </summary>
      Public ReadOnly Property cmdMainWindow_Deactivated() As ICommand
         Get
            If m_cmdMainWindow_Deactivated Is Nothing Then
               m_cmdMainWindow_Deactivated = New RelayCommand(AddressOf MainWindow_Deactivated)
            End If
            Return m_cmdMainWindow_Deactivated
         End Get
      End Property

      ''' <summary>
      ''' Manage the MainWindow_ContentRendered event. This method is invoked by the cmdMainWindow_ContentRendered.
      ''' </summary>
      Public Sub MainWindow_Deactivated(ByVal param As Object)
         ' Notify the ContentRendered event
         Application.Msn.NotifyColleagues(Application.MAINWINDOW_DEACTIVATED)
      End Sub

#End Region ' Deactivated Command

#End Region

#Region "METHODS"

      Private Sub RegisterMyMessages()
         Application.Msn.Register(Application.CLOSEAPPLICATIONCOMMAND, Sub()
                                                                          Application.Msn.NotifyColleagues(Application.CLOSEAPPLICATION)
                                                                          ' Terminazione generale di EgtInterface
                                                                          EgtExit()
                                                                          ' Rilascio mutex
                                                                          m_objMutex.Close()
                                                                          ' Aggiorno istanze usate
                                                                          Dim nTmp As Integer = GetPrivateProfileInt(S_GENERAL, K_INSTANCES, 0)
                                                                          nTmp -= (1 << (m_nInstance - 1))
                                                                          WritePrivateProfileString(S_GENERAL, K_INSTANCES, nTmp.ToString())
                                                                          Application.Current.Shutdown()
                                                                       End Sub)
         Application.Msn.Register(Application.ALLOWWINDOWTOCLOSE, Sub(bBoolean As Boolean)
                                                                     m_allowWindowToClose = bBoolean
                                                                  End Sub)
         Application.Msn.Register(Application.UPDATEMAINWINDOWTITLE, Sub(sString As String)
                                                                        Title = sString
                                                                     End Sub)
      End Sub

      ''' <summary>
      ''' Method that initialize EgalTech environment
      ''' </summary>
      Private Sub InitializeEgtEnvironment()
         '' Abilito drag and drop
         'Me.AllowDrop = True
         '' Title
         Application.Msn.NotifyColleagues(Application.EMITTITLE)
         ' Impostazione path radice per i dati
         m_sDataRoot = System.AppDomain.CurrentDomain.BaseDirectory
         If EgtUILib.GetPrivateProfileString(S_DATA, K_DATAROOT, "", m_sDataRoot, m_sDataRoot & "\" & DAT_FILE_NAME) = 0 Then
            m_sDataRoot = System.AppDomain.CurrentDomain.BaseDirectory
         End If
         ' Impostazione direttorio di configurazione
         m_sConfigDir = m_sDataRoot & "\" & CONF_DIR
         ' Impostazione direttorio per file temporanei
         m_sTempDir = m_sDataRoot & "\" & TEMP_DIR
         ' Impostazione path Ini file
         m_sIniFile = m_sConfigDir & "\" & INI_FILE_NAME
         ' Impostazione direttorio per le macchine
         If GetPrivateProfileString(S_MACH, K_MACHINESDIR, "", m_sMachinesRoot) = 0 Then
            m_sMachinesRoot = m_sDataRoot & "\" & MACHINES_DFL_DIR
         End If
         IniFile.m_sMachinesRoot = m_sMachinesRoot
         ' Verifico indice di istanza
         ManageIstance()
         ' Imposto tipo di chiave
         EgtSetLockType(KEY_TYPE.HW)
         ' Leggo e imposto chiave di protezione
         Dim sLicFileName As String = String.Empty
         GetPrivateProfileString(S_GENERAL, K_LICENCE, LIC_FILE_NAME, sLicFileName)
         Dim sLicFile As String = m_sConfigDir & "\" & sLicFileName
         Dim sKey As String = String.Empty
         EgtUILib.GetPrivateProfileString(S_LICENCE, K_KEY, "", sKey, sLicFile)
         EgtSetKey(sKey)
         ' Recupero livello e opzioni della chiave
         Dim bKey As Boolean = EgtGetKeyLevel(3279, 16, 1, m_nKeyLevel) And
                               EgtGetKeyOptions(3279, 16, 1, m_nKeyOptions)
         ' Inizializzazione generale di EgtInterface
         m_nDebug = GetPrivateProfileInt(S_GENERAL, K_DEBUG, 0)
         Dim sLogFile As String = m_sTempDir & "\" & GENLOG_FILE_NAME.Replace("#", m_nInstance.ToString())
         Dim sLogMsg As String = "User " & Environment.UserName & "\" & Environment.MachineName & " (" & m_nInstance.ToString() & ")" & vbLf &
                                 My.Application.Info.Description.ToString() & " ver. " & My.Application.Info.Version.ToString()
         EgtInit(m_nDebug, sLogFile, sLogMsg)
         ' Leggo direttorio dei messaggi (se manca uso direttorio di configurazione)
         Dim sMsgDir As String = String.Empty
         If GetPrivateProfileString(S_GENERAL, K_MESSAGESDIR, "", sMsgDir) = 0 Then
            sMsgDir = m_sConfigDir
         End If
         ' Leggo file messaggi
         Dim sMsgFile As String = String.Empty
         GetPrivateProfileString(S_GENERAL, K_MESSAGES, "", sMsgFile)
         Dim sMsgFilePath As String = sMsgDir & "\" & sMsgFile
         If Not EgtLoadMessages(sMsgFilePath) Then
            EgtOutLog("Error in EgtLoadMessages")
         End If
         ' Leggo e imposto livello utilizzatore
         m_nUserLevel = Math.Min(m_nKeyLevel, GetPrivateProfileInt(S_GENERAL, K_USERLEVEL, 1))
         ' imposto dir font Nfe e font default
         Dim sNfeDir As String = String.Empty
         GetPrivateProfileString(S_GEOMDB, K_NFEFONTDIR, "", sNfeDir)
         Dim sDefFont As String = String.Empty
         GetPrivateProfileString(S_GEOMDB, K_DEFAULTFONT, "", sDefFont)
         EgtSetFont(sNfeDir, sDefFont)
         ' imposto dir di default per libreria Lua e lancio libreria di base
         Dim sLuaLibsDir As String = String.Empty
         GetPrivateProfileString(S_LUA, K_LIBSDIR, "", sLuaLibsDir)
         EgtSetLuaLibs(sLuaLibsDir)
         Dim sLuaBaseLib As String = String.Empty
         GetPrivateProfileString(S_LUA, K_BASELIB, "EgtBase", sLuaBaseLib)
         EgtLuaRequire(sLuaBaseLib)
         '' Impostazioni MruLists
         'm_MruFiles.Init(m_sIniFile, S_MRUFILES, 8)
         'm_MruScripts.Init(m_sIniFile, S_MRUSCRIPTS, 8)
         ' Installo funzione gestione eventi per lua
         EgtSetProcessEvents(m_ProcEventsCallback)
         ' Installo funzione output testo su status per lua
         EgtSetOutText(m_OutTextCallback)
         ' Info su opzioni chiave
         EgtOutLog("KeyOptions : " & bKey.ToString() & " " & m_nKeyOptions.ToString())

      End Sub

      ''' <summary>
      ''' Funzione che permette di gestire il numero di istanze del programma attive contemporaneamente
      ''' </summary>
      Private Sub ManageIstance()
         Dim bCreated As Boolean
         Try
            m_objMutex = New Mutex(False, "Global\EgtCAM5", bCreated)
         Catch
            bCreated = False
         End Try
         If bCreated Then
            ' Prima istanza
            m_nInstance = 1
            ' Aggiorno stato istanze attive
            WritePrivateProfileString(S_GENERAL, K_INSTANCES, m_nInstance.ToString)
         Else
            ' Leggo il massimo numero di istanze ammesse
            Dim nMaxInst As Integer = GetPrivateProfileInt(S_GENERAL, K_MAXINST, 1)
            nMaxInst = Max(1, Min(nMaxInst, 32))
            ' Cerco il primo indice di istanza libero (max 32)
            Dim nTmp As Integer = GetPrivateProfileInt(S_GENERAL, K_INSTANCES, 0)
            m_nInstance = 1
            Dim nMask As Integer = 1
            While (nTmp And nMask) <> 0 And m_nInstance <= m_nInstance
               m_nInstance += 1
               nMask *= 2
            End While
            ' Se l'indice supera il massimo
            If m_nInstance > nMaxInst Then
               ' porto in primo piano la prima istanza
               Dim bFound As Boolean = False
               ' processi del programma a 32 bit
               Dim localProc As Process() = Process.GetProcessesByName("EgtCAM5R32")
               For Each p As Process In localProc
                  If p.Id <> Process.GetCurrentProcess().Id Then
                     bFound = True
                     ShowWindow(p.MainWindowHandle, SW.SHOWMAXIMIZED)
                     Exit For
                  End If
               Next
               ' se non trovati processi a 32 bit provo a 64 bit
               If Not bFound Then
                  localProc = Process.GetProcessesByName("EgtCAM5R64")
                  For Each p As Process In localProc
                     If p.Id <> Process.GetCurrentProcess().Id Then
                        bFound = True
                        ShowWindow(p.MainWindowHandle, SW.SHOWMAXIMIZED)
                        Exit For
                     End If
                  Next
               End If
               ' esco dal programma
               End
            End If
            ' Aggiorno stato istanze attive
            nTmp += (1 << (m_nInstance - 1))
            WritePrivateProfileString(S_GENERAL, K_INSTANCES, nTmp.ToString())
         End If
      End Sub

      Public Function ProcessEvents(ByVal nProg As Integer, ByVal nPause As Integer) As Integer
         ' Se previsto, imposto progress
         If nProg > 0 Then
            Application.Msn.NotifyColleagues(Application.NOTIFYSTATUSPROGRESS, nProg)
         End If
         ' Costringo ad aggiornare
         Application.Current.Dispatcher.Invoke(DispatcherPriority.Background, New Action(Sub()
                                                                                         End Sub))
         ' Eventuale attesa
         Thread.Sleep(nPause)
         ' Ritorno eventuale stop
         If m_bStopScript Then
            m_bStopScript = False
            Return 0
         Else
            Return 1
         End If
      End Function

      Public Function OutText(ByRef psText As IntPtr) As Boolean
         Application.Msn.NotifyColleagues(Application.NOTIFYSTATUSOUTPUT, Marshal.PtrToStringUni(psText))
         Return True
      End Function

#End Region

#Region "Events"

      Private Sub MainWindow_KeyDown(ByVal sender As System.Object, ByVal e As KeyEventArgs)
         ' Con ESC esco dall'azione corrente
         If e.Key = Key.Escape Then
            ' reset Azione corrente
            Application.Msn.NotifyColleagues(Application.RESETSTATUS)
            ' reset Analisi e Distanza
            'chkAnalyze.Checked = False
            'chkGetDist.Checked = False
            ' pulisco output
            Application.Msn.NotifyColleagues(Application.NOTIFYSTATUSOUTPUT, "")
            Application.Msn.NotifyColleagues(Application.RESETINPUTBOX)
         End If
      End Sub

#End Region

#Region "Verify closing"

      ''' <summary>
      ''' Should we let our window close?
      ''' </summary>
      Private m_allowWindowToClose As Boolean = False


#End Region

   End Class

End Namespace