Checks current bandwidth and forgets/joins wifi if it is lower than min threshold

reset_wifi.sh

#! /bin/bash

# Needs brew install speedtest-cli

network='en0'
wifi_name='XXXX-TODO'
wifi_password='YYYY-TODO'
min_bandwidth_mbps=125

function download_speed() { 
    bps=$(speedtest-cli --no-upload --json | jq .download)
    bps=${bps%.*}
    mbps=$(($bps/(1024*1024)))
    echo $mbps
}

mbps=$(download_speed)
echo "Current bandwidth is: $mbps Mbps"

if [ "$mbps" -gt "${min_bandwidth_mbps}" ]; then
    echo "Won't reset wifi, as bandwidth is high ${mbps} Mbps > ${min_bandwidth_mbps} Mbps"
    exit 0
else
    echo "Will reset wifi, as bandwidth is low ${mbps} Mbps < ${min_bandwidth_mbps} Mbps"
fi


echo "About to switch off WiFi"
networksetup -setairportpower "${network}" off

echo "About to  forget WiFi $wifi_name"
sudo networksetup -removepreferredwirelessnetwork "${network}" "${wifi_name}"

echo "About to switch on WiFi"
networksetup -setairportpower "${network}" on

echo "About to sleep for 15 seconds"
sleep 15

echo "About to join WiFi: ${wifi_name}"
networksetup -setairportnetwork "${network}" "${wifi_name}" "${wifi_password}"

mbps=$(download_speed)
echo "Current bandwidth is: $mbps Mbps"