Folder Redirection Alternative

######################################################################################
##                                          ##
##          Change the vpn address to match the site            ##
##                                          ##
######################################################################################

############# Define what is a valid IP address to synchronize over

$vpn_ip = 'x.x.x.*'
$site_ip = 'x.x.x.*'

$IPs = Get-WmiObject -Class Win32_NetworkAdapterConfiguration -Filter IPEnabled=TRUE -ComputerName . | select IPAddress
$IPs = echo ($IPs.IPAddress | where{$_ -notmatch ":"})
$validIP = $false
$vpnIP = $false
foreach($ip in $IPs){
    if($ip -like $site_ip){
        $validIP = $true
        if($ip -like $vpn_ip){
            $vpnIP = $true
        }
    }
}

######################################################################################
##                                          ##
##      Change the local and network paths to match the site            ##
##                                          ##
######################################################################################

############# Run this script only of the user is connected to a local network

if(($validIP) -and !($vpnIP)){

    ############# Define the local and network root directories for synchronization

    $local_path = "$env:USERPROFILE"
    $network_path = "\\server\share\$env:USERNAME"

    ############# Make sure all synchronize location have a cache root directory

    if(!(Test-Path $local_path\.bkup_cache)){
        $(MkDir $local_path\.bkup_cache).Attributes = ‘Hidden’
    }
    if(!(Test-Path $local_path\.bkup_cache\Contacts)){
        MkDir $local_path\.bkup_cache\Contacts
    }
    if(!(Test-Path $local_path\.bkup_cache\Desktop)){
        MkDir $local_path\.bkup_cache\Desktop
    }
    if(!(Test-Path $local_path\.bkup_cache\Documents)){
        MkDir $local_path\.bkup_cache\Documents
    }
    if(!(Test-Path $local_path\.bkup_cache\Favorites)){
        MkDir $local_path\.bkup_cache\Favorites
    }
    if(!(Test-Path $local_path\.bkup_cache\Links)){
        MkDir $local_path\.bkup_cache\Links
    }

    ############# Generate a list of files that need to be checked for deletion

    $contacts = @(Get-ChildItem -Recurse -Name $local_path\.bkup_cache\Contacts)
    $desktop = @(Get-ChildItem -Recurse -Name $local_path\.bkup_cache\Desktop)
    $documents = @(Get-ChildItem -Recurse -Name $local_path\.bkup_cache\Documents)
    $favorites = @(Get-ChildItem -Recurse -Name $local_path\.bkup_cache\Favorites)
    $links = @(Get-ChildItem -Recurse -Name $local_path\.bkup_cache\Links)

    ############# The folder and file lists that will be synchronized

    $sync_folders = @($contacts,$desktop,$documents,$favorites,$links)
    $folder_names = @("Contacts","Desktop","Documents","Favorites","Links")

    #############
    # If a for each file that exists in the local cache, check to see if it exists
    # on the local machine, if it exists locally but not remotely, delete the local
    # copy as it once exists but now does not - meaning deleted from another location.
    # Check to see if the file exists in the cache, and on the network, but not locally
    # then delete the network copy becuase the file was deleted locally
    #############

    function Test-Deleted ($check_folder, $check_file){
        if (Test-Path "$local_path\$check_folder\$check_file") {
            if(!(Test-Path "$network_path\$check_folder\$check_file")){
                Remove-Item "$local_path\$check_folder\$check_file"
            }
        }
        if (Test-Path "$network_path\$check_folder\$check_file") {
            if (!(Test-Path "$local_path\$check_folder\$check_file")) {
                Remove-Item "$network_path\$check_folder\$check_file"
            }
        }

    }

    ############# Test the file locations to determine if a file was deleted and should be removed from a location

    $i = 0
    foreach ($folder in $folder_names) {
        foreach ($file in $sync_folders[$i]) {
            Test-Deleted $folder $file
        }
        $i++
    }

    ############# Update the network store location with any local file changes

    robocopy /NFL /NDL /NJH /NJS /NC /NS /NP /XO /E /SEC /DCOPY:DAT /XJ /R:0 /IPG:2 $local_path\Contacts $network_path\Contacts
    robocopy /NFL /NDL /NJH /NJS /NC /NS /NP /XO /E /SEC /DCOPY:DAT /XJ /R:0 /IPG:2 $local_path\Desktop $network_path\Desktop
    robocopy /NFL /NDL /NJH /NJS /NC /NS /NP /XO /E /SEC /DCOPY:DAT /XJ /R:0 /IPG:2 $local_path\Documents $network_path\Documents
    robocopy /NFL /NDL /NJH /NJS /NC /NS /NP /XO /E /SEC /DCOPY:DAT /XJ /R:0 /IPG:2 $local_path\Favorites $network_path\Favorites
    robocopy /NFL /NDL /NJH /NJS /NC /NS /NP /XO /E /SEC /DCOPY:DAT /XJ /R:0 /IPG:2 $local_path\Links $network_path\Links

    ############# Download any updates to files from the network store location

    robocopy /NFL /NDL /NJH /NJS /NC /NS /NP /XO /E /SEC /DCOPY:DAT /XJ /R:0 /IPG:2 $network_path\Contacts $local_path\Contacts
    robocopy /NFL /NDL /NJH /NJS /NC /NS /NP /XO /E /SEC /DCOPY:DAT /XJ /R:0 /IPG:2 $network_path\Desktop $local_path\Desktop
    robocopy /NFL /NDL /NJH /NJS /NC /NS /NP /XO /E /SEC /DCOPY:DAT /XJ /R:0 /IPG:2 $network_path\Documents $local_path\Documents
    robocopy /NFL /NDL /NJH /NJS /NC /NS /NP /XO /E /SEC /DCOPY:DAT /XJ /R:0 /IPG:2 $network_path\Favorites $local_path\Favorites
    robocopy /NFL /NDL /NJH /NJS /NC /NS /NP /XO /E /SEC /DCOPY:DAT /XJ /R:0 /IPG:2 $network_path\Links $local_path\Links

    ############# Update the local side cache with newest versions for Test-Delete function to compare on next run

    robocopy /NFL /NDL /NJH /NJS /NC /NS /NP /MIR /SEC /DCOPY:DAT /XJ /R:0 $local_path\Contacts $local_path\.bkup_cache\Contacts
    robocopy /NFL /NDL /NJH /NJS /NC /NS /NP /MIR /SEC /DCOPY:DAT /XJ /R:0 $local_path\Desktop $local_path\.bkup_cache\Desktop
    robocopy /NFL /NDL /NJH /NJS /NC /NS /NP /MIR /SEC /DCOPY:DAT /XJ /R:0 $local_path\Documents $local_path\.bkup_cache\Documents
    robocopy /NFL /NDL /NJH /NJS /NC /NS /NP /MIR /SEC /DCOPY:DAT /XJ /R:0 $local_path\Favorites $local_path\.bkup_cache\Favorites
    robocopy /NFL /NDL /NJH /NJS /NC /NS /NP /MIR /SEC /DCOPY:DAT /XJ /R:0 $local_path\Links $local_path\.bkup_cache\Links

}