gen-script

#!/bin/bash

HOST=api.cloudflare.com

if [ -z "$TOKEN" ]
then
  echo TOKEN is not set. Cannot continue.
  exit 2
fi

function dns_ids() {
  curl -s "https://$HOST/client/v4/zones/$ZONE_ID/dns_records" \
    -H "Accept: application/json" \
    -H "Authorization: Bearer $TOKEN" \
    | jq -r ".result[] | select(.name == (\"*.$DOMAIN\", \"$DOMAIN\")) | .id + \":\" + .name"
}

DNS_IDS=`dns_ids`

cat <<'EOT'
:global mcdPreviousIP;

:local mcdCurrentIP
:set mcdCurrentIP [/ip cloud get public-address]

:if ($mcdCurrentIP != $mcdPreviousIP) do={
  :log info "mcd: new IP $mcdCurrentIP (was $mcdPreviousIP)"
  :set mcdPreviousIP $mcdCurrentIP
EOT

for line in $DNS_IDS
do
  id=${line%:*}
  name=${line#*:}

  cat <<EOT
  /tool fetch mode=https \\
    http-method=put \\
    url="https://$HOST/client/v4/zones/$ZONE_ID/dns_records/$id" \\
    http-header-field="content-type: application/json,Authorization: Bearer $TOKEN" \\
    http-data="{\"type\":\"A\",\"name\":\"$name\",\"content\":\"\$mcdCurrentIP\"}" \\
    output=none
EOT
done

cat <<EOT
}
EOT