Add polybar module for showing wireguard status

.config/polybar/nord-config

@@ -43,7 +43,7 @@ wm-restack = bspwm
 # clipmenu-widget: showing clipmenu service
 
 # Top modules
-bottom-left = powermenu title bluetooth cpu memory backlight
+bottom-left = powermenu title bluetooth wireguard cpu memory backlight
 bottom-center = i3
 bottom-right = spotify alsa network-detail battery date
 

.config/polybar/nord-top

@@ -97,7 +97,7 @@ label-focused-padding = 2
 label-focused-foreground = ${colors.nord7}
 label-focused-underline = ${colors.nord7}
 
-label-unfocused = 
+label-unfocused =
 
 label-urgent = %name%
 label-urgent-foreground = ${colors.urgent}
@@ -362,3 +362,9 @@ exec = ~/.config/polybar/bluetooth.sh
 interval = 2
 format-underline = #81a1c1
 click-left = exec alacritty -e bluetoothctl
+
+[module/wireguard]
+type = custom/script
+exec = ~/.config/polybar/polybar-wireguard
+tail = false
+interval = 2

.config/polybar/polybar-wireguard

@@ -0,0 +1,58 @@
+#!/usr/bin/env sh
+
+# Unfortunately it's not easy to directly use Polybar colour values in this
+# script so I have to redefine some of my colours here. See the link below for
+# more details:
+# https://github.com/polybar/polybar/wiki/Formatting#format-tags-inside-polybar-config
+color=#bf616a
+
+configs_path="/PATH/TO/CONF/FILES"
+connected_interface=$(networkctl | grep -P "\d+ .* wireguard routable" -o | cut -d" " -f2)
+
+connect() {
+    selected_config=$(ls $configs_path/*.conf | xargs basename -a -s .conf | dmenu)
+    [[ $selected_config ]] && sudo wg-quick up "$configs_path"/"$selected_config".conf
+}
+
+disconnect() {
+    # Normally we should have a single connected interface but technically
+    # there's nothing stopping us from having multiple active intgerfaces so
+    # let's do this in a loop:
+    for connected_config in $(networkctl | grep -P "\d+ .* wireguard routable" -o | cut -d" " -f2)
+    do
+        sudo wg-quick down $configs_path/"$connected_config".conf
+    done
+}
+
+toggle() {
+    if [[ $connected_interface ]]
+    then
+        disconnect
+    else
+        connect
+    fi
+}
+
+print() {
+    if [[ $connected_interface ]]
+    then
+        echo %{u"$color"}%{+u}%{T4}%{F"$color"}%{T-}%{F-} "$connected_interface"
+    else
+        echo %{u"$color"}%{+u}%{T4}%{F"$color"}%{T-}%{F-} 
+    fi
+}
+
+case "$1" in
+    --connect)
+        connect
+        ;;
+    --disconnect)
+        disconnect
+        ;;
+    --toggle)
+        toggle
+        ;;
+    *)
+        print
+        ;;
+esac