#!/bin/sh

# Show wifi 🛜 and percent strength or 📡 if none.
# Show 🌐 if connected to ethernet or ❎ if none.
# Show 🛰️ if a vpn connection is active

eth_con="$(nmcli -t -f NAME,TYPE,DEVICE connection show |
  awk -F: '$2=="ethernet" && $3!="" { print $1; exit }')"

wifi_con="$(nmcli -t -f NAME,TYPE connection show |
  awk -F: '$2=="wifi" { print $1; exit }')"

if [ -n "$eth_con" ]; then
  nmcli connection modify "$eth_con" ipv4.method auto
  nmcli connection modify "$eth_con" ipv4.never-default no
  nmcli connection modify "$eth_con" ipv4.dns-priority -42
  nmcli connection modify "$eth_con" ipv4.route-metric 100
  nmcli connection modify "$eth_con" connection.autoconnect yes
fi

if [ -n "$wifi_con" ]; then
  nmcli connection modify "$wifi_con" ipv4.dns-priority 100
  nmcli connection modify "$wifi_con" ipv4.route-metric 600
fi

case $BLOCK_BUTTON in
1)
  "$TERMINAL" -e nmtui
  pkill -RTMIN+7 dwmblocks
  ;;
2)
  wifi_dev="$(nmcli -t -f DEVICE,TYPE device |
    awk -F: '$2=="wifi" { print $1; exit }')"

  wifi_state="$(nmcli -t -f DEVICE,STATE device |
    awk -F: -v dev="$wifi_dev" '$1==dev { print $2 }')"

  if [ "$wifi_state" = "connected" ]; then
    nmcli radio wifi off
    notify-send "Wi-Fi" "Wi-Fi disconnected"
  else
    nmcli radio wifi on
    notify-send "Wi-Fi" "Wi-Fi connected"
  fi

  pkill -RTMIN+7 dwmblocks
  ;;
3) notify-send "🌐 Internet module" "\- Left click to connect
❌: wifi disabled
📡: no wifi connection
🛜: wifi connection with quality
❎: no ethernet
🌐: ethernet working
🛰: vpn is active
" ;;
6) setsid -f "$TERMINAL" -e "$EDITOR" "$0" ;;
esac

# Wifi
if grep -q 'up' /sys/class/net/w*/operstate 2>/dev/null; then
  if grep -q '^\s*w' /proc/net/wireless; then
    wifiicon="$(awk '/^\s*w/ { print "🛜" int($3 * 100 / 70) "%" }' /proc/net/wireless)"
  else
    wifiicon="📡"
  fi
elif grep -q 'down' /sys/class/net/w*/operstate 2>/dev/null; then
  wifiicon="❌"
fi

# Ethernet
grep -q 'up' /sys/class/net/e*/operstate && ethericon="🌐" || ethericon="❎"

# TUN
grep -q 'up' /sys/class/net/tun*/operstate 2>/dev/null && tunicon="🛰"

icons=""
[ -n "$wifiicon" ] && icons="${icons}$wifiicon "
[ -n "$ethericon" ] && icons="${icons}$ethericon "
[ -n "$tunicon" ] && icons="${icons}$tunicon "

printf "%s\n" "${icons% }"