Powershell - Simple Outlook Signature deployment

#A template for the signatures can be downloaded on my google drive at:
#https://drive.google.com/open?id=0B2kaqHUWZdXxNXlHYU1EZnFJVTg
#If you are creating your own template, make sure you create: html, rtf and txt versions.

#You can easily deploy this powershell script via Group Policy, then configure user settings to run this script on 'logon'.
#This script creates the temp file which the signatures are populated, but I'm working on it to get the correct path for Outlook
#depending on the registry entries etc.

$serverName = "W17BS-SVR01"
$user = $env:username

#Paths used for copying from share to temp, then to Outlook signature
$shareLocation = "\\$serverName\Share\Outlook_Signature_Templates\Standard"
$tempPath = "C:\Users\$user\Documents\Temp-ps-created"
$finalPath = "C:\Users\$user\Documents\final-path"
#Final path should be OUTLOOK signature location, instead of hard scripting it would
#be better to find the registery to find out which version of office + normally located in
#Appdata, so using $env:appdata would be preferred...

$filter = "(&(objectCategory=User)(samAccountName=$user))"

#Directory Searcher allows us to perform queries against AD.
$objSearcher = New-Object System.DirectoryServices.DirectorySearcher
$objSearcher.Filter = $filter #Can use LDAP:\\ filter but above is neater..


$objPath = $objSearcher.FindOne() #Assuming 1 entry for this username, will return to our variable
$objUser = $objPath.GetDirectoryEntry() #Returns entry relevant to $objPath

#Populate variables with simple LDAP attributes. Can be found at with a simple google search.
$name = $objUser.name
$jobtitle = $objUser.title
$mobile = $objUser.mobile
$mail = $objUser.mail
$extension = $objUser.pager

#Copy the signaute template to a temp folder
#In my situation, I would have this signature template on a share and then
#copy it to the users C:\ documents folder as a temp store location to change variables before moving it
#to the final location (appdata -> office16 -> outlook -> signatures)...
if (Test-Path $tempPath)
{
    Write-Host "Temp path exists! Deleting..."
    Remove-Item -Recurse -Force $tempPath
    Copy-Item $shareLocation -Destination "$tempPath\Standard" -Recurse -Force -Container
} else
{
    Write-Host "Temp path doesnt exist!"
    Copy-Item $shareLocation -Destination "$tempPath\Standard" -Recurse -Force -Container
}

#3 types of files in an outlook signature. HTML, rich text and text formats. Best to design these in WORD since
#outlook can give some bad results in regards of formatting signatures etc...
#HTML
(Get-Content "$tempPath\Standard\Standard.htm") | Foreach-Object {
    $_ -replace '%fullname%', $name `
       -replace '%jobtitle%', $jobtitle `
       -replace '%mobile%', $mobile `
       -replace '%mail%', $mail `
       -replace '%extension%', $extension
    } | Set-Content "$tempPath\Standard\Standard.htm" -Force

#RTF
(Get-Content "$tempPath\Standard\Standard.rtf") | Foreach-Object {
    $_ -replace '%fullname%', $name `
       -replace '%jobtitle%', $jobtitle `
       -replace '%mobile%', $mobile `
       -replace '%mail%', $mail `
       -replace '%extension%', $extension
    } | Set-Content "$tempPath\Standard\Standard.rtf" -Force

#TXT
(Get-Content "$tempPath\Standard\Standard.txt") | Foreach-Object {
    $_ -replace '%fullname%', $name `
       -replace '%jobtitle%', $jobtitle `
       -replace '%mobile%', $mobile `
       -replace '%mail%', $mail `
       -replace '%extension%', $extension
    } | Set-Content "$tempPath\Standard\Standard.txt" -Force