#!/usr/bin/env dash


print_network_state() {
  case "$1" in
    eth*|enp*)
      echo ethernet
      ;;
    wlan*|wlp*)
      echo wireless
      ;;
    usb*)
      echo tethering
      ;;
    *)
      echo disconnected
      ;;
  esac
}

wifi_strength() {
    if [ "$1" -le 20 ]; then echo terrible
  elif [ "$1" -le 40 ]; then echo bad
  elif [ "$1" -le 60 ]; then echo mediocre
  elif [ "$1" -le 80 ]; then echo good
  else                       echo excellent
  fi
}

print_network_infos() {
  if [ -n "$1" ]; then
    device="$1"
    route_line=$(ip route show dev "$device" | awk '($1 == "default") { print }')

    printf ',"ip":{"local":"%s","gateway":"%s"}' \
      "$(echo "$route_line" | awk '{ print $7 }')" \
      "$(echo "$route_line" | awk '{ print $3 }')"

    if [ "$state" = wireless ]; then
      wireless_info=$(nmcli --get-values active,ssid,signal dev wifi list --rescan no | grep "^yes")
      ssid=$(echo "$wireless_info" | cut -d : -f2)
      signal=$(echo "$wireless_info" | cut -d : -f3)
      printf ',"wifi":{"signal":"%s","ssid":"%s"}' \
        "$(wifi_strength "$signal")" \
        "$ssid"
    fi
  fi
}

print_network_status() {
  device=$(ip route | awk '($1 == "default") { print $5 }')
  state=$(print_network_state "$device")

  printf '{"state":"%s"%s}\n' \
    "$state" \
    "$(print_network_infos "$device")"
}

print_bluetooth_status (){
	power=$(bluetoothctl show | grep Powered | awk '{print $2}' | sed 's/yes/on/g; s/no/off/g')
	count=$(bluetoothctl devices Connected | wc -l)
	echo "{\"power\": \"${power}\", \"count\": \"${count}\"}"
}

print_connectivity_info () {
  network="$(print_network_status)"
  bluetooth="$(print_bluetooth_status)"

	echo "{\"bluetooth\": ${bluetooth}, \"network\": ${network}}"
}

print_connectivity_info
dbus-monitor --system "interface=org.freedesktop.DBus.ObjectManager" 2> /dev/null | while read -r line; do
	print_connectivity_info
	sleep 0.1
done