# Set-GPEnvironment
# Writen By Brandon Shell(www.BSonPosh.com)
# Sets GPO Environment
function Convert-DNToDNS{$args[0] -replace "DC=","" -replace ",","."}
function Convert-GPSOMType {
    Param($SOMType)
    switch ($SOMType)
    {
        $gpmConstants.SOMDomain  {"Domain"} 
        $gpmConstants.SOMOU      {"OU"}
        $gpmConstants.SOMSite    {"Site"}
        Default                  {"Domain"}
    }
}
function Convert-GPTrusteeValue {
    Param($trusteeValue) 
    switch ($trusteeValue)
    {
        1 {"User"}
        2 {"Group"}
        3 {"Domain"}
        4 {"Domain Local Group"}
        5 {"Well Known Group"} 
        6 {"Deleted Account"}
        7 {"Invalid"}
        8 {"Unknown"}
        9 {"Computer"}
    }
}
function Convert-GPPermValue {
    Param($PermValue) 
    switch ($PermValue)
    {
        $gpmConstants.PermGPOApply                  {"Apply"}
        $gpmConstants.PermGPOCustom                 {"Custom"}
        $gpmConstants.PermGPOEdit                   {"Edit"} 
        $gpmConstants.PermGPOEditSecurityandDelete  {"Edit and Delete"}
        $gpmConstants.PermGPORead                   {"Read"}
    }
}
function Get-GPOBackups{
    Param($BackupFolder) 
    $gpmSearchCriteria = $gpm.CreateSearchCriteria()
    $gpmSearchCriteria.Add($gpmConstants.SearchPropertyBackupMostRecent,$gpmConstants.SearchOPEquals,$True)
    $gpmBackupDir = $gpm.GetBackupDir($BackupFolder) 
    $gpmBackupDir.SearchBackups($gpmSearchCriteria)
}
 
# Global
$gpm = new-object -ComObject "gpmgmt.gpm"
$gpmConstants = $gpm.GetConstants()
$rootDSE = [ADSI]"LDAP://rootDSE"
$ADSIDomain = $rootDSE.defaultNamingContext 
$dnsDomain = Convert-DNToDNS $ADSIDomain
$ADSIForestRoot = $rootDSE.rootDomainNamingContext
$dnsForestRoot = Convert-DNToDNS $ADSIForestRoot
$gpmDomain = $gpm.GetDomain($dnsDomain,$null,$gpmConstants.UsePDC)