Get notified on Discord about UniFi devices with available firmware upgrade

Prerequisites: sudo apt-get install jq

#!/bin/bash
# ==============================================================================
# Title       : unifi-list-upgrades.sh
# Description : Call UniFi API to get firmware available upgrades 
# Author      : https://thelazyfox.xyz
# ==============================================================================

URL="https://ip:port"
USER=""
PASSWORD=""

API_LOGIN="/api/login"
API_DEVICES="/api/s/default/stat/device"

COOKIE_FILE="cookie.txt"
CURL_FILE_LOGIN="curl_login.txt"

PUSH_SCRIPT="../push/discord"
WEBHOOK="https://discord.com/api/webhooks/xxx"

wget https://raw.githubusercontent.com/ChaoticWeg/discord.sh/master/discord.sh  -O $PUSH_SCRIPT --quiet
chmod +x $PUSH_SCRIPT

echo "-- Login to API"
curl -c "$COOKIE_FILE" -X POST --data '{"username": "'${USER}'", "password":"'${PASSWORD}'", "remember":"true"}' "${URL}${API_LOGIN}" -o "$CURL_FILE_LOGIN" --insecure --silent > /dev/null

if grep -q "csrf_token" "$COOKIE_FILE"; then

    echo "-- Login success"

    response=$(curl -X POST -H 'Content-Type: multipart/form-data' -b "$COOKIE_FILE" "${URL}${API_DEVICES}" --insecure --silent)
 
    if [[ ! -z ${response} ]]; then
        echo "-- Getting information"
        for device in $(echo "${response}" | jq -r '.data[] | @base64'); do
            name=$(echo ${device} | base64 --decode | jq -r ".name")
            upgradable=$(echo ${device} | base64 --decode | jq -r ".upgradable")
            echo "-- -- ${name}: ${upgradable}"
            if [[ ${upgradable} == "true" ]]; then
                "${PUSH_SCRIPT}" \
                 --webhook-url="$WEBHOOK" \
                 --title "Firmware upgrade available!" \
                 --description "$name can be upgraded! \n\r ${BASE_URL}"
            fi
        done
    else
        echo "-- ERROR: Call failed"
    fi
    
else
    echo "-- ERROR: Login failed or Cookie not found"
fi

rm "${COOKIE_FILE}"
rm "${CURL_FILE_LOGIN}"