mod: show public ip in waybar

on click to show

defaults/waybar/config

@@ -2,7 +2,7 @@
   "layer": "top",
   "modules-left": ["sway/workspaces"],
   "modules-center": ["clock"],
-  "modules-right": ["custom/playerctl", "custom/weather", "pulseaudio", "network", "tray"],
+  "modules-right": ["custom/playerctl", "custom/weather", "pulseaudio", "custom/network", "tray"],
   "sway/workspaces": {
     "disable-scroll": true,
     "all-outputs": true,
@@ -34,11 +34,11 @@
     "exec": "wttrbar --fahrenheit --main-indicator 'temp_F' --location 'Grand Rapids'",
     "return-type": "json"
   },
-  "network": {
+  "custom/network": {
-    "format-wifi": " {essid} ({signalStrength}%)",
+    "format": "{text}",
-    "format-ethernet": " {ipaddr}",
+    "return-type": "json",
-    "format-disconnected": "⚠ Disconnected",
+    "exec": "bash $HOME/.config/waybar/network.sh",
-    "family": "ipv4",
+    "on-click": "bash $HOME/.config/waybar/network.sh toggle",
     "interval": 5,
     "tooltip": false
   },

defaults/waybar/network.sh

@@ -0,0 +1,51 @@
+#!/usr/bin/env bash
+set -u
+
+state_dir="${XDG_RUNTIME_DIR:-/tmp}/waybar-${UID}"
+state_file="$state_dir/public-ip"
+
+if [[ ${1:-} == toggle ]]; then
+  mkdir -p -m 700 "$state_dir"
+  if [[ -s $state_file ]]; then
+    : > "$state_file"
+  else
+    public_ip=$(curl -4fsS --max-time 5 https://wtfismyip.com/json 2>/dev/null |
+      jq -er '.YourFuckingIPAddress | select(type == "string") | split(".") |
+        select(length == 4 and all(.[]; test("^[0-9]{1,3}$") and (tonumber <= 255))) |
+        join(".")' 2>/dev/null) || exit 0
+    printf '%s\n' "$public_ip" > "$state_file"
+  fi
+  exit 0
+fi
+
+route=$(ip -4 route get 1.1.1.1 2>/dev/null) || route=
+if [[ ! $route =~ [[:space:]]dev[[:space:]]([^[:space:]]+) ]]; then
+  jq -cn '{text: "⚠ Disconnected", class: "disconnected"}'
+  exit 0
+fi
+interface=${BASH_REMATCH[1]}
+if [[ ! $route =~ [[:space:]]src[[:space:]]([0-9.]+) ]]; then
+  jq -cn '{text: "⚠ Disconnected", class: "disconnected"}'
+  exit 0
+fi
+local_ip=${BASH_REMATCH[1]}
+
+if [[ -s $state_file ]]; then
+  jq -cn --rawfile ip "$state_file" '{text: (" " + ($ip | rtrimstr("\n"))), class: "public"}'
+  exit 0
+fi
+
+if [[ $(nmcli -g GENERAL.TYPE device show "$interface" 2>/dev/null) == wifi ]]; then
+  essid=$(nmcli -g GENERAL.CONNECTION device show "$interface" 2>/dev/null | head -n 1)
+  signal=$(nmcli -t -f IN-USE,SIGNAL device wifi list ifname "$interface" --rescan no 2>/dev/null |
+    awk -F: '$1 == "*" { print $2; exit }')
+  if [[ -n $essid && $essid != -- ]]; then
+    text=" $essid"
+    [[ -n $signal ]] && text="${text} (${signal}%)"
+  else
+    text=" $local_ip"
+  fi
+else
+  text=" $local_ip"
+fi
+jq -cn --arg text "$text" '{text: $text, class: "connected"}'

defaults/waybar/style.css

@@ -31,7 +31,7 @@ window#waybar {
 #cpu,
 #memory,
 #pulseaudio,
-#network,
+#custom-network,
 #battery,
 #clock,
 #custom-playerctl {
@@ -65,7 +65,7 @@ window#waybar {
   animation-direction: alternate;
 }
 
-#network.disconnected {
+#custom-network.disconnected {
   color: #cc241d;
 }
 

home/sway.nix

@@ -36,6 +36,9 @@ in {
   xdg.configFile."sway/config".source = lib.mkForce (dirs.defaults + /sway/config);
   xdg.configFile."waybar/config".source = lib.mkForce (dirs.defaults + /waybar/config);
   xdg.configFile."waybar/style.css".source = lib.mkForce (dirs.defaults + /waybar/style.css);
+  xdg.configFile."waybar/network.sh".source = dirs.defaults + /waybar/network.sh;
+
+  home.packages = with pkgs; [ curl iproute2 networkmanager ];
 
   programs.wofi = { 
     enable = pkgs.stdenv.isLinux;