Youtube channel monitoring script

livestream-monitor.sh

#!/usr/bin/env bash

# Script assumes the following:
# - streamlink is installed: `pip3 install streamlink`
# - gotify will be used to send push notifications (modify it yourself if you need another CLI push utility)

# Edit these variables
channel_id=''
channel_title='My Youtube Channel'

# This variable determines what command will be used to notify user
# ${notify_command} expects to receive stdin (i.e. `echo 'message' | ${notify_command}`)
notify_comand='gotify push'

# Testing link for lofi-beats channel (normally running all the time)
#streamlink "https://www.youtube.com/channel/UCSJ4gkVC6NrvII8umztf0Ow/live"

# Testing link for MKBHD
#streamlink "https://www.youtube.com/c/mkbhd/live"

# Check if channel is livestreaming
streamlink "https://www.youtube.com/channel/${channel_id}/live" > /dev/null
status_code="$?"

[[ ${status_code} == 0 ]] && stream_status="up"
[[ ${status_code} != 0 ]] && stream_status="down"

if grep -q 'livestream is up' /tmp/livestream.txt
then
        stream_prev_state='up'
else
        stream_prev_state='down'
fi

[[ ${stream_prev_state} != ${stream_status} ]] && echo -n "${channel_title} livestream is ${stream_status}" | ${notify_comand}

[[ ${stream_status} == 'up' ]] && echo "${channel_title} livestream is up" | tee /tmp/livestream.txt
[[ ${stream_status} == 'down' ]] && echo "${channel_title} livestream is down" | tee /tmp/livestream.txt

## Don't exit with error code if the livestream is up
true