Alert myself on slack when an Online server is available

alert-online-available-server.sh

#!/bin/bash

SERVER_MODEL=dedibox-xc
SLACK_WEBHOOK_URI="https://hooks.slack.com/services/VERY/SECRET/TOKEN"

while [ 1 ]; do
    is_available=$(curl https://www.online.net/en/dedicated-server/${SERVER_MODEL} | grep -c 'greentxt')
    if [ ${is_available} != 0 ]; then
        curl -X POST -d 'payload={"channel": "#your-channel", "username": "bot", "text": "Online server available", "icon_emoji": ":rocket:"}' ${SLACK_WEBHOOK_URI}
    fi
    sleep 30
done