redirections.xml builder

function buildlist($b, $p)
{
    if ($b -eq "Chrome")
    {
        $folders = "Cache", "Cached Theme Image", "JumpListIcons", "JumpListIconsOld", "Local Storage", "Storage", "GPUCache", "Sync Data", "blob_storage", "IndexedDB", "Application Cache", "Code Cache" #,"Session Storage"
        foreach ($folder in $folders)
        {
            if (test-path (Join-Path $p $folder))
            {
                ((join-path $p $folder) -split "$env:username\\")[1]
            }
        }
    }
    else
    {
        $folders = "cache2", "jumpListCache", "OfflineCache", "startupCache", "thumbnails"
        foreach ($folder in $folders)
        {
            if (test-path (Join-Path $p $folder))
            {
                ((join-path $p $folder) -split "$env:username\\")[1]
            }
        }
    }

}

$redirection = "$env:localappdata\FSLogix\Redirections.xml"
$firefoxprofiles = (gci "$env:localappdata\mozilla\firefox\Profiles" | ?{ $_.psiscontainer }).fullname
$firefoxexcludes = @()
$chromeexcludes = @()
foreach ($fprof in $firefoxprofiles)
{
    $firefoxexcludes += buildlist -b firefox -p $fprof
}
$googleprofiles = (gci "$env:localappdata\Google\Chrome\User Data" | ?{ $_.psiscontainer -and ($_.name -eq "default" -or $_.name -like "profile*") }).fullname
foreach ($gprof in $googleprofiles)
{
    $chromeexcludes = buildlist -b chrome -p $gprof
}
$onenotecaches = (gci $env:LOCALAPPDATA\Microsoft\Onenote -Recurse  -ea SilentlyContinue| ?{ $_.psiscontainer -and $_.name -like "*cache" }).fullname | %{
    ($_ -split "$env:username\\")[1]
}

$template = "<?xml version=`"1.0`"?>
<FrxProfileFolderRedirection ExcludeCommonFolders=`"128`">
    <Includes>
        <Include>AppData\Roaming\Microsoft\Excel\XLSTART\</Include>
        <Include>AppData\Roaming\Microsoft\Word\STARTUP</Include>
    </Includes>
    <Excludes>
        <Exclude Copy=`"0`">AppData\Roaming\Microsoft\Excel\</Exclude>
        <Exclude Copy=`"0`">AppData\Roaming\Microsoft\Word\</Exclude>"
$end = "`r`n</Excludes>
</FrxProfileFolderRedirection>"
if ($firefoxexcludes)
{
    foreach ($f in $firefoxexcludes)
    {
        $template += "`r`n<Exclude Copy=`"0`">" + $f + "</Exclude>"
    }
}
if ($chromeexcludes)
{
    foreach ($c in $chromeexcludes)
    {
        $template += "`r`n<Exclude Copy=`"0`">" + $c + "</Exclude>"
    }
}
if ($onenotecaches)
{
    foreach ($o in $onenotecaches)
    {
        $template += "`r`n<Exclude Copy=`"0`">" + $o + "</Exclude>"
    }
}
$template += $end
$template | out-file $redirection -force