stop-transcript 2>&1
start-transcript -path $($MyInvocation.MyCommand.Name+".log") -force

write-host "Setting up NAT ..."

$truenics = gwmi Win32_NetworkAdapterConfiguration| Where-Object {$_.IPEnabled -eq 'True'}
$truenics 

$macpri = @($($truenics | where-object{$_.ipaddress -match "192.168.10.1"}).macaddress)
$macpri

if($macpri -eq $null){throw "cannot find the mac with ip 192.168.10.1"}

$namepri= $(gwmi Win32_NetworkAdapter| Where-Object {$_.macaddress -match $macpri}).NetConnectionID
$namepri

$namepub= $(gwmi Win32_NetworkAdapter|  Where-Object {$_.macaddress -in $truenics.macaddress}| Where-Object {$_.macaddress -notmatch $macpri}).NetConnectionID
$namepub

if($namepub.count -eq 0){"namepub count is 0, returning.";return;}

$c= netsh routing ip nat dump
$c

$regexpri = "add interface.*$namepri.*private"
$regexpri

$tmp=$namepub[0]
$regexpub = "add interface.*$tmp.*full"
$regexpub

$c|foreach-object{if($_ -match $regexpri){$priexist = $true;};if($_ -match $regexpub){$pubexist = $true;}}
$priexist
$pubexist

if($priexist -and $pubexist){return;}

if ($namepub.count -eq 1){
	
	.\nat.bat $namepri $namepub >nat.log 2>&1
}
if ($namepub.count -ge 2){
	set-content .\nat2.bat (get-content .\nat.bat).replace('rem rem3rdpara','if not %3=="" netsh routing ip nat add interface name=%3 mode=FULL && netsh interface ipv4 set interface %3 forwarding=enabled')
	.\nat2.bat $namepri $namepub[0] $namepub[1] >nat.log 2>&1
}