Alert DNS resolution problems in Discord

dnsMonitor.sh

#!/bin/bash

WEBHOOK_URL="https://discord.com/api/v10/webhooks/XXX/XXX"
NAME_TO_CHECK="luancaliel.dev"
TEST_FREQUENCY="2"
USER_TO_MENTION="435228312214962204"

alert_debounce=true
healthy=true

send_webhook() {
        if [ "$alert_debounce" = true ]; then
                return
        fi
        local message=$1

        alert_debounce=true
        timestamp=$(date '+%d/%m/%Y %H:%M:%S')
        payload='{"content": "'$message'\n\n'$timestamp' <@'$USER_TO_MENTION'>", "allowed_mentions": {"users": ["'$USER_TO_MENTION'"]}}'
        curl -X POST -H "Content-Type: application/json" -d "$payload" "$WEBHOOK_URL"
}

while true; do
        result=$(dig +short $NAME_TO_CHECK)

        if [ -z "$result" ]; then
                if [ "$healthy" = true ]; then
                        alert_debounce=false
                fi

                healthy=false
                send_webhook "# :warning: DNS resolution\n\nDNS resolution returned no IPs when resolving $NAME_TO_CHECK"
        else
                if [ "$healthy" = false ]; then
                        alert_debounce=false
                fi

                healthy=true
                send_webhook "# :white_check_mark: DNS resolution\n\nDNS resolution is OK!"
        fi

        sleep $TEST_FREQUENCY
done