Imports System.Runtime.InteropServices
Imports DigitalData.Modules.Logging

Public Class ClassWindowsAPI
    Private Const SEE_MASK_INVOKEIDLIST = &HC
    Private Const SEE_MASK_NOCLOSEPROCESS = &H40
    Private Const SEE_MASK_FLAG_NO_UI = &H400
    Private Const SW_SHOW As Short = 5

    Private _LogConfig As LogConfig
    Private _Logger As Logger

    <DllImport("Shell32", CharSet:=CharSet.Auto, SetLastError:=True)>
    Public Shared Function ShellExecuteEx(ByRef lpExecInfo As ShellExecuteInfo) As Boolean
    End Function

    Public Structure ShellExecuteInfo
        Public cbSize As Integer
        Public fMask As Integer
        Public hwnd As IntPtr
        <MarshalAs(UnmanagedType.LPTStr)> Public lpVerb As String
        <MarshalAs(UnmanagedType.LPTStr)> Public lpFile As String
        <MarshalAs(UnmanagedType.LPTStr)> Public lpParameters As String
        <MarshalAs(UnmanagedType.LPTStr)> Public lpDirectory As String
        Dim nShow As Integer
        Dim hInstApp As IntPtr
        Dim lpIDList As IntPtr
        <MarshalAs(UnmanagedType.LPTStr)> Public lpClass As String
        Public hkeyClass As IntPtr
        Public dwHotKey As Integer
        Public hIcon As IntPtr
        Public hProcess As IntPtr
    End Structure

    Public Sub New(LogConfig As LogConfig)
        _LogConfig = LogConfig
        _Logger = LogConfig.GetLogger()
    End Sub

    Public Sub ShowFileProperties(FilePath As String)
        If FilePath = String.Empty OrElse Not IO.File.Exists(FilePath) Then
            Logger.Warn("Could not show file properties. FilePath '{0}' is invalid or does not exist.", FilePath)
            Exit Sub
        End If

        Dim oInfo As New ShellExecuteInfo With {
            .cbSize = Marshal.SizeOf(oInfo),
            .lpVerb = "properties",
            .lpFile = FilePath,
            .nShow = SW_SHOW,
            .fMask = SEE_MASK_INVOKEIDLIST
        }

        If Not ShellExecuteEx(oInfo) Then
            Dim ex As New ComponentModel.Win32Exception(Marshal.GetLastWin32Error())
            Logger.Warn("Could not show file properties. Reason: {0}", ex.Message)
            Logger.Error(ex)
        End If
    End Sub

End Class