### Define Variables ###
clientpresent="amber on"
clientactive="white on"
ledsoff="amber off white off"
I=`nvram get wl0_ifname`

#Start the loop
while sleep 1 ; do

## Initialize ##
seecameras=""
clientsminusprinters=""
blinkamber=""
clientleds=""

### Define Functions ###
#look for camera macs
seecameras ()
{
if [ [ wl assoclist | grep A1:B1:C1:D1:E1:F1 || wl assoclist | grep A2:B2:C2:D2:E2:F2 || wl assoclist | grep A3:B3:C3:D3:E3:F3 ] ]; then
     return 0 # true
   else
     return 1 # false
fi
}

#look for clients other than printer macs
clientsminusprinters ()
{
ignoredmacs=$(wl assoclist | grep -v A1:B1:C1:D1:E1:F1 | grep -v A2:B2:C2:D2:E2:F2 | grep -v A3:B3:C3:D3:E3:F3)
if [ -n "ignoredmacs" ] ; then
    return 0  # true
  else
    return 1  # false
  fi
}

#blink amber led function
blinkamber () 
{ 
led amber off
sleep 1
led amber on 
}

#client present leds
clientleds ()
{
XFER=`ifconfig $I|grep bytes`
if [ "$XFER" != "$PXFER" ]; then
	LED=$clientactive
	PXFER=$XFER
	else
	LED=$clientpresent
fi
if [ "$LED" != "$PLED" ]; then
        led $LED
        PLED=$LED
fi
}

### MAIN ###

if [ [ seecameras && clientsminusprinters == 1 ] ]; then
blinkamber

elif [ [ clientsminusprinters && seecameras ] ]; then
clientleds

else
#default command
led $ledsoff
fi
done