check_internet.5s.sh

#!/bin/bash

#  <xbar.title>Internet check</xbar.title>
#  <xbar.version>v1.0</xbar.version>
#  <xbar.author>Daniel Dias</xbar.author>
#  <xbar.author.github>danielbdias</xbar.author.github>
#  <xbar.desc>Plugin to check network stability on your Mac.</xbar.desc>
#  <xbar.image>http://www.hosted-somewhere/pluginimage</xbar.image>
#  <xbar.dependencies>perl</xbar.dependencies>

# Plugin for https://github.com/matryer/xbar
# 
# Based on https://blog.ershadk.com/2020/05/11/how-to-configure-a-simple-internet-status-widget-in-macos-menu-bar.html

# Latency threshold in ms
LATENCY_THRESHOLD=30

latency=$(ping -c1 8.8.8.8 -t 2 | \
    perl -n -e'/time=(\d+)/ && print $1')

if [[ ! -z "$latency" ]]; then
  if [ "$latency" -gt $LATENCY_THRESHOLD ]; then
    echo "🟡 $latency"
  else
    echo "🟢 OK"
  fi
else
  echo "🔴 No Wifi"
  osascript -e "display notification \"Network intermitency detected\" with title \"Internet check\""
fi