#!/bin/bash

logfile=/root/logs/dyndns.log
log_identifier="[DNS]"
log() {
  echo -e $@ | ts "[%Y-%m-%d %H:%M:%S] $log_identifier" >> $logfile
}
log_echo() {
  echo -e $@ | ts "[%Y-%m-%d %H:%M:%S] $log_identifier" | tee -a $logfile
}

set -o allexport
source /root/scripts/.dyndns_env
set +o allexport

url="https://${USERNAME}:${PASSWORD}@infomaniak.com/nic/update?hostname="

log "Updating DynDNS for ${MAIN_DOMAIN}"

response=$(curl -s -f "${url}${MAIN_DOMAIN}")
if [[ $? -ne 0 ]]; then
  log_echo "[ERROR] ${MAIN_DOMAIN} DynDNS Request Failed!"
  exit 1
fi

log "Response: ${response}"

if [[ "$response" =~ ^nochg ]]; then
  # IP has not changed
  # log_echo "IP has not changed, is still $(echo $response | awk '{print $2}')"
  exit 0

elif [[ "$response" =~ ^good ]]; then
  # IP has changed
  log_echo "IP HAS CHANGED TO $(echo $response | awk '{print $2}')"
  log_echo "${MAIN_DOMAIN} was updated successfully"

  domains_error=0
  for $domain in $ADDITIONAL_DOMAINS
  do
    log "Updating DynDNS for ${domain}"
    additional_response=$(curl -s -f "${url}mneun.ch")
    if [[ $? -ne 0 ]]; then
      log_echo "[ERROR] ${domain} DynDNS Request Failed!"
      exit 1
    fi

    log "${domain} response: ${additional_response}"

    if [[ "$additional_response" =~ ^good ]]; then
      # Change succeeded
      log_echo "${domain} was updated successfully"
    elif [[ "$additional_response" =~ ^nochg ]]; then
      log_echo "${domain} did not change"
    else
      log_echo "[ERROR] ${domain} DynDNS request response does not match expectations!"
      domains_error=1
    fi
    sleep 1
  done

  if [ $domain_error -eq 1 ]; then
    exit 2
  fi
else
  log_echo "[ERROR] ${MAIN_DOMAIN} DynDNS request respone does not match expectations!"
  exit 2
fi