#!/bin/bash

icon='\uf1eb '
case "$(cat /sys/class/net/w*/operstate 2>/dev/null)" in
  down) printf "$icon <span background='#770000'>no wifi</span>" ;;
  up)
    [ -n "$(ip address show dev wlan0 | grep 'inet ')" ] \
      && printf "$icon $(iw dev wlan0 info | grep 'ssid ' | cut -d' ' -f2-)" \
      || printf "$icon <span background='#770000'>no ip</span>"
esac