#!/usr/bin/env dash

# wireless icons
ICON_WIFI0=""
ICON_WIFI1=""
ICON_WIFI2=""
ICON_WIFI3=""

# No wifi interface? Abort!
ints=$(find /sys/class/net/*/wireless -type d)
[ -z "$ints" ] && echo "I${ICON_WIFI0}" && exit

# Start watching
while :
do
    # SSID=$(iwgetid --raw)
    signal=$(awk 'NR==3 {print $3}' /proc/net/wireless)
    case "${signal%?}" in
        100|[6-9][0-9]) icon="${ICON_WIFI3}" ;;
        [2-5][0-9])     icon="${ICON_WIFI2}" ;;
        *)              icon="${ICON_WIFI1}" ;;
    esac
    echo "I$icon"
    sleep 10
done