Imports System.Threading
Imports System.Math
Imports EgtUILib

Friend Class MainWindowModel

#Region "FIELDS"

   ' Mutex che permette di controllare il numero massimo di istanze aperta contemporaneamente
   Private m_objMutex As New Mutex
   ' Variabile che indica il numero di istanze aperte del programma
   Friend m_nInstance As Integer = 0

   ' Path cartella Data
   Friend m_sDataRoot As String = String.Empty

   ' Livello dell'utilizzatore
   Friend m_nUserLevel As Integer = 1
   ' '' Livello della chiave inserita nel PC
   ''Friend m_nKeyLevel As Integer = 0
   ' '' Opzioni attive sulla chiave
   ''Friend m_nKeyOptions As UInteger = 0

   Private m_nDebug As Integer = 0

#End Region

#Region "CONSTRUCTOR"

   Sub New()
      ' 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
      IniFile.m_sConfigDir = m_sDataRoot & "\" & CONF_DIR
      ' Impostazione direttorio per file temporanei
      IniFile.m_sTempDir = m_sDataRoot & "\" & TEMP_DIR
      ' Impostazione path Ini file
      IniFile.m_sIniFile = IniFile.m_sConfigDir & "\" & INI_FILE_NAME
      ' 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, IniFile.m_nKeyLevel) And
                            EgtGetKeyOptions(3279, 16, 1, IniFile.m_nKeyOptions)
      'Inizializzazione generale di EgtInterface
      m_nDebug = GetPrivateProfileInt(S_GENERAL, K_DEBUG, 0)
      Dim sLogFile As String = IniFile.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.Major.ToString() &
                              "." & My.Application.Info.Version.Minor.ToString() &
                              (ChrW(97 - 1 + My.Application.Info.Version.Build)).ToString() &
                              My.Application.Info.Version.Revision.ToString()
      EgtInit(m_nDebug, sLogFile, sLogMsg)
      ' carico direttorio doors
      GetPrivateProfileString(S_DOORS, K_BASEDIR, "", IniFile.m_sDoorsDirPath)
      ' L'inidirro del file di Default
      IniFile.m_DefaultIniFile = IniFile.m_sDoorsDirPath & "\Compo\Default.ini"
      'Inizializzo OptionModule
      OptionModule.InitOptionModule()
      ' 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)
      ' Imposto path IniFile
      EgtSetIniFile(IniFile.m_sIniFile)

   End Sub

#End Region

#Region "METHODS"

   ''' <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\EgtDOORCreator", 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("EgtDOORCreatorR32")
            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("EgtDOORCreatorR64")
               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

#End Region

End Class