Imports System.Runtime.InteropServices
Imports System.Security

Public Module EgtInterface

#If DEBUG Then
   Const EgtIntDll32 As String = "EgtBasisD32.dll"
   Const EgtIntDll64 As String = "EgtBasisD64.dll"
#Else
   Const EgtIntDll32 As String = "EgtBasisR32.dll"
   Const EgtIntDll64 As String = "EgtBasisR64.dll"
#End If

   <DllImport(EgtIntDll32, CharSet:=CharSet.Unicode, EntryPoint:="EgtSetKey"), SuppressUnmanagedCodeSecurity()>
   Private Function EgtSetKey_32(sKey As String) As Boolean
   End Function
   <DllImport(EgtIntDll64, CharSet:=CharSet.Unicode, EntryPoint:="EgtSetKey"), SuppressUnmanagedCodeSecurity()>
   Private Function EgtSetKey_64(sKey As String) As Boolean
   End Function
   Public Function EgtSetKey(sKey As String) As Boolean
      If IntPtr.Size = 4 Then
         Return EgtSetKey_32(sKey)
      Else
         Return EgtSetKey_64(sKey)
      End If
   End Function

   <DllImport(EgtIntDll32, CharSet:=CharSet.Unicode, EntryPoint:="EgtGetKeyLevel"), SuppressUnmanagedCodeSecurity()>
   Private Function EgtGetKeyLevel_32(nProd As Integer, nVer As Integer, nLev As Integer,
                                     ByRef nKLev As Integer) As Boolean
   End Function
   <DllImport(EgtIntDll64, CharSet:=CharSet.Unicode, EntryPoint:="EgtGetKeyLevel"), SuppressUnmanagedCodeSecurity()>
   Private Function EgtGetKeyLevel_64(nProd As Integer, nVer As Integer, nLev As Integer,
                                     ByRef nKLev As Integer) As Boolean
   End Function
   Public Function EgtGetKeyLevel(nProd As Integer, nVer As Integer, nLev As Integer,
                                 ByRef nKLev As Integer) As Boolean
      If IntPtr.Size = 4 Then
         Return EgtGetKeyLevel_32(nProd, nVer, nLev, nKLev)
      Else
         Return EgtGetKeyLevel_64(nProd, nVer, nLev, nKLev)
      End If
   End Function

   <DllImport(EgtIntDll32, CharSet:=CharSet.Unicode, EntryPoint:="EgtGetKeyOptions"), SuppressUnmanagedCodeSecurity()>
   Private Function EgtGetKeyOptions_32(nProd As Integer, nVer As Integer, nLev As Integer,
                                    ByRef nOpt1 As UInteger, ByRef nOpt2 As UInteger) As Boolean
   End Function
   <DllImport(EgtIntDll64, CharSet:=CharSet.Unicode, EntryPoint:="EgtGetKeyOptions"), SuppressUnmanagedCodeSecurity()>
   Private Function EgtGetKeyOptions_64(nProd As Integer, nVer As Integer, nLev As Integer,
                                    ByRef nOpt1 As UInteger, ByRef nOpt2 As UInteger) As Boolean
   End Function
   Public Function EgtGetKeyOptions(nProd As Integer, nVer As Integer, nLev As Integer,
                                    ByRef nOpt1 As UInteger, ByRef nOpt2 As UInteger) As Boolean
      If IntPtr.Size = 4 Then
         Return EgtGetKeyOptions_32(nProd, nVer, nLev, nOpt1, nOpt2)
      Else
         Return EgtGetKeyOptions_64(nProd, nVer, nLev, nOpt1, nOpt2)
      End If
   End Function
   Public Function EgtGetKeyOptions(nProd As Integer, nVer As Integer, nLev As Integer,
                                    ByRef nOpt2 As UInteger) As Boolean
      Return EgtGetKeyOptions(nProd, nVer, nLev, nOpt2)
   End Function

   <DllImport(EgtIntDll32, CharSet:=CharSet.Unicode, EntryPoint:="EgtGetKeyLeftDays"), SuppressUnmanagedCodeSecurity()>
   Private Function EgtGetKeyLeftDays_32(ByRef nLeftDays As Integer) As Boolean
   End Function
   <DllImport(EgtIntDll64, CharSet:=CharSet.Unicode, EntryPoint:="EgtGetKeyLeftDays"), SuppressUnmanagedCodeSecurity()>
   Private Function EgtGetKeyLeftDays_64(ByRef nLeftDays As Integer) As Boolean
   End Function
   Public Function EgtGetKeyLeftDays(ByRef nLeftDays As Integer) As Boolean
      If IntPtr.Size = 4 Then
         Return EgtGetKeyLeftDays_32(nLeftDays)
      Else
         Return EgtGetKeyLeftDays_64(nLeftDays)
      End If
   End Function

   <DllImport(EgtIntDll32, CharSet:=CharSet.Unicode, EntryPoint:="EgtGetKeyAssLeftDays"), SuppressUnmanagedCodeSecurity()>
   Private Function EgtGetKeyAssLeftDays_32(ByRef nAssLeftDays As Integer) As Boolean
   End Function
   <DllImport(EgtIntDll64, CharSet:=CharSet.Unicode, EntryPoint:="EgtGetKeyAssLeftDays"), SuppressUnmanagedCodeSecurity()>
   Private Function EgtGetKeyAssLeftDays_64(ByRef nAssLeftDays As Integer) As Boolean
   End Function
   Public Function EgtGetKeyAssLeftDays(ByRef nAssLeftDays As Integer) As Boolean
      If IntPtr.Size = 4 Then
         Return EgtGetKeyAssLeftDays_32(nAssLeftDays)
      Else
         Return EgtGetKeyAssLeftDays_64(nAssLeftDays)
      End If
   End Function

   <DllImport(EgtIntDll32, CharSet:=CharSet.Unicode, EntryPoint:="EgtGetKeyOptLeftDays"), SuppressUnmanagedCodeSecurity()>
   Private Function EgtGetKeyOptLeftDays_32(ByRef nOptLeftDays As Integer) As Boolean
   End Function
   <DllImport(EgtIntDll64, CharSet:=CharSet.Unicode, EntryPoint:="EgtGetKeyOptLeftDays"), SuppressUnmanagedCodeSecurity()>
   Private Function EgtGetKeyOptLeftDays_64(ByRef nOptLeftDays As Integer) As Boolean
   End Function
   Public Function EgtGetKeyOptLeftDays(ByRef nOptLeftDays As Integer) As Boolean
      If IntPtr.Size = 4 Then
         Return EgtGetKeyOptLeftDays_32(nOptLeftDays)
      Else
         Return EgtGetKeyOptLeftDays_64(nOptLeftDays)
      End If
   End Function

   <DllImport(EgtIntDll32, CharSet:=CharSet.Unicode, EntryPoint:="EgtFreeMemory"), SuppressUnmanagedCodeSecurity()>
   Private Function EgtFreeMemory_32(sB As IntPtr) As Boolean
   End Function
   <DllImport(EgtIntDll64, CharSet:=CharSet.Unicode, EntryPoint:="EgtFreeMemory"), SuppressUnmanagedCodeSecurity()>
   Private Function EgtFreeMemory_64(sB As IntPtr) As Boolean
   End Function
   Public Function EgtFreeMemory(sB As IntPtr) As Boolean
      If IntPtr.Size = 4 Then
         Return EgtFreeMemory_32(sB)
      Else
         Return EgtFreeMemory_64(sB)
      End If
   End Function

   <DllImport(EgtIntDll32, CharSet:=CharSet.Unicode, EntryPoint:="EgtLoadMessages"), SuppressUnmanagedCodeSecurity()>
   Private Function EgtLoadMessages_32(sMsgFilePath As String) As Boolean
   End Function
   <DllImport(EgtIntDll64, CharSet:=CharSet.Unicode, EntryPoint:="EgtLoadMessages"), SuppressUnmanagedCodeSecurity()>
   Private Function EgtLoadMessages_64(sMsgFilePath As String) As Boolean
   End Function
   Public Function EgtLoadMessages(sMsgFilePath As String) As Boolean
      If IntPtr.Size = 4 Then
         Return EgtLoadMessages_32(sMsgFilePath)
      Else
         Return EgtLoadMessages_64(sMsgFilePath)
      End If
   End Function

   <DllImport(EgtIntDll32, CharSet:=CharSet.Unicode, EntryPoint:="EgtGetMsg"), SuppressUnmanagedCodeSecurity()>
   Private Function EgtGetMsg_32(nId As Integer) As IntPtr
   End Function
   <DllImport(EgtIntDll64, CharSet:=CharSet.Unicode, EntryPoint:="EgtGetMsg"), SuppressUnmanagedCodeSecurity()>
   Private Function EgtGetMsg_64(nId As Integer) As IntPtr
   End Function
   Public Function EgtMsg(nId As Integer) As String
      If IntPtr.Size = 4 Then
         Return Marshal.PtrToStringUni(EgtGetMsg_32(nId))
      Else
         Return Marshal.PtrToStringUni(EgtGetMsg_64(nId))
      End If
      ' Non è necessario liberare la memoria nativa perchè usa un buffer statico
   End Function

   <DllImport(EgtIntDll32, CharSet:=CharSet.Unicode, EntryPoint:="EgtInitLogger"), SuppressUnmanagedCodeSecurity()>
   Private Function EgtInitLogger_32(nDebug As Integer, sLogFilePath As String) As Boolean
   End Function
   <DllImport(EgtIntDll64, CharSet:=CharSet.Unicode, EntryPoint:="EgtInitLogger"), SuppressUnmanagedCodeSecurity()>
   Private Function EgtInitLogger_64(nDebug As Integer, sLogFilePath As String) As Boolean
   End Function
   Public Function EgtInitLogger(nDebug As Integer, sLogFilePath As String) As Boolean
      If IntPtr.Size = 4 Then
         Return EgtInitLogger_32(nDebug, sLogFilePath)
      Else
         Return EgtInitLogger_64(nDebug, sLogFilePath)
      End If
   End Function

   <DllImport(EgtIntDll32, CharSet:=CharSet.Unicode, EntryPoint:="EgtOutLog"), SuppressUnmanagedCodeSecurity()>
   Private Function EgtOutLog_32(sMsg As String, nDebugLevel As Integer) As Boolean
   End Function
   <DllImport(EgtIntDll64, CharSet:=CharSet.Unicode, EntryPoint:="EgtOutLog"), SuppressUnmanagedCodeSecurity()>
   Private Function EgtOutLog_64(sMsg As String, nDebugLevel As Integer) As Boolean
   End Function
   Public Function EgtOutLog(sMsg As String, nDebugLevel As Integer) As Boolean
      If IntPtr.Size = 4 Then
         Return EgtOutLog_32(sMsg, nDebugLevel)
      Else
         Return EgtOutLog_64(sMsg, nDebugLevel)
      End If
   End Function
   Public Function EgtOutLog(sMsg As String) As Boolean
      Return EgtOutLog(sMsg, 0)
   End Function

   <DllImport(EgtIntDll32, CharSet:=CharSet.Unicode, EntryPoint:="EgtGetStringUtf8FromIni"), SuppressUnmanagedCodeSecurity()>
   Private Function EgtGetStringUtf8FromIni_32(sSec As String, sKey As String, sDef As String, ByRef sVal As IntPtr, sIniFile As String) As Boolean
   End Function
   <DllImport(EgtIntDll64, CharSet:=CharSet.Unicode, EntryPoint:="EgtGetStringUtf8FromIni"), SuppressUnmanagedCodeSecurity()>
   Private Function EgtGetStringUtf8FromIni_64(sSec As String, sKey As String, sDef As String, ByRef sVal As IntPtr, sIniFile As String) As Boolean
   End Function
   Public Function EgtGetStringUtf8FromIni(sSec As String, sKey As String, sDef As String, ByRef sVal As String, sIniFile As String) As Boolean
      Dim psVal As IntPtr
      Dim bOk As Boolean = False
      If IntPtr.Size = 4 Then
         bOk = EgtGetStringUtf8FromIni_32(sSec, sKey, sDef, psVal, sIniFile)
      Else
         bOk = EgtGetStringUtf8FromIni_64(sSec, sKey, sDef, psVal, sIniFile)
      End If
      If bOk Then
         sVal = Marshal.PtrToStringUni(psVal)
         EgtFreeMemory(psVal)
      Else
         sVal = String.Empty
      End If
      Return bOk
   End Function

   <DllImport(EgtIntDll32, CharSet:=CharSet.Unicode, EntryPoint:="EgtWriteStringUtf8ToIni"), SuppressUnmanagedCodeSecurity()>
   Public Function EgtWriteStringUtf8toIni_32(sSec As String, sKey As String, sVal As String, sIniFile As String) As Boolean
   End Function
   <DllImport(EgtIntDll64, CharSet:=CharSet.Unicode, EntryPoint:="EgtWriteStringUtf8ToIni"), SuppressUnmanagedCodeSecurity()>
   Public Function EgtWriteStringUtf8toIni_64(sSec As String, sKey As String, sVal As String, sIniFile As String) As Boolean
   End Function
   Public Function EgtWriteStringUtf8toIni(sSec As String, sKey As String, sVal As String, sIniFile As String) As Boolean
      If IntPtr.Size = 4 Then
         Return EgtWriteStringUtf8toIni_32(sSec, sKey, sVal, sIniFile)
      Else
         Return EgtWriteStringUtf8toIni_64(sSec, sKey, sVal, sIniFile)
      End If
   End Function

   Public Function EgtInit(nDebug As Integer, sLogFile As String, Optional sLogMsg As String = "") As Boolean
      Dim MyDll As System.Reflection.AssemblyName = System.Reflection.Assembly.GetExecutingAssembly().GetName()
      sLogMsg &= vbLf & "EgtUILib.dll ver. " &
              MyDll.Version.Major.ToString() & "." &
              MyDll.Version.Minor.ToString() &
              (ChrW(97 - 1 + MyDll.Version.Build)).ToString() &
              MyDll.Version.Revision.ToString()
      Dim bOk As Boolean = EgtInitLogger(nDebug, sLogFile)
      If bOk Then EgtOutLog(sLogMsg)
      Return bOk
   End Function

End Module