# Get-GPO.ps1
# Writen By Brandon Shell aka(BSonPosh)
# Gets GPO or GPOs according to Parameters
# Parameters
#  -Path:    Path to the backups
#  -GPOName: Name of the GPO 
#  -Table:   Path of Migration Table file.
# Switches
#  -whatif:
#  -Verbose: Enables Verbose Logging
Param($path = $(throw '$path is required'),
      $GPOName,
      $Table,
      [switch]$all,
      [switch]$Verbose)
    
if($verbose){$verbosepreference = "continue"}else{$erroractionpreference = "SilentlyContinue"}
if(!($GPOName -or $All)){Write-Host "Please supply GPOName or -All to Import" -fore Yellow}
. "$pwd\Set-GPEnvironment.ps1"

Write-Host

# Testing for $PATH
Write-Verbose " + Checking Backup Path $path"
if(!(test-Path $path)){return "Backup folder is invalid"}
Write-Verbose "   - Found Backup Path $path"

# Getting Backups to Import From
Write-Verbose " + Getting Backups from $Path"
$backups = Get-GPOBackups $Path
Write-Verbose "   - Found [$($backups.count)] GPO Backups"

# Checking for Migration Table"
if($Table -and !(test-path $Table))
{
    Write-Host "-- Migration Table Path Invalid --" -fore Red
    return
}
if($Table)
{
  Write-Verbose " - Using Migration Table $Table"
  $GPMMigrationTable = $GPM.GetMigrationTable($Table)
}

$GPOi = @()

# Checking if GPOName was passed
if($GPOName)
{
    Write-Verbose " + Getting GPO Data for $GPOName"
    $GPOi +=  $backups | where-Object{$_.GPODisplayName -eq $GPOName}
    Write-Verbose "   - Found $($GPOi.GPODisplayName)"
}

if($all)
{
    foreach($backup in $backups)
    {
        Write-Verbose " + Adding $($backup.GPODisplayName)"
        $GPOi += $backup
    }
}

foreach($gpo in $GPOi)
{
    # Create and GPO and Import Backup
    Write-Verbose " + Creating GPO to Import to"
    $NewGPO = $gpmDomain.CreateGPO()
    $NewGPO.DisplayName = "$($gpo.GPODisplayName)"
    Write-Verbose "   - Created GPO $($NewGPO.Displayname) with GUID $($NewGPO.ID)"
    if($Table)
    {
        Write-Verbose "   - Importing GPO [$($gpo.GPODisplayName)] with $Table"
        #$NewGPO.Import(0,$gpo,$GPMMigrationTable) | out-Null
    }
    else
    {
        Write-Verbose "   - Importing GPO [$($gpo.GPODisplayName)]"
        #$NewGPO.Import(0,$gpo) | out-Null
    }
    if($?)
    {
        Write-Host "Successfully Imported $($gpo.GPODisplayName)" -Fore Green
    }
    else
    {
        Write-Host "An error occurred while importing $($gpo.GPODisplayName)." -fore Red
        Write-Host "Error: $($error[0])" -fore Red
    }
}
Write-Host