#!/bin/bash

. /usr/lib/nagios/plugins/utils.sh

WHOIS=/usr/bin/whois

DOMAIN_NAME=$1
DAYS=$2

if [ -z "${DOMAIN_NAME}" ]; then
    echo "Domain not defined!"
    exit $STATE_WARNING
    fi

[ -z "${DAYS}" ] && DAYS=30

time_shift=$((86400 * ${DAYS}))

if [ `echo "${DOMAIN_NAME}" | egrep -i "RU$"` ]; then
    paid_data=`${WHOIS} "${DOMAIN_NAME}" | grep paid-till`
    [ -z "${paid_data}" ] && exit $STATE_UNKNOWN
    paid=`${WHOIS} "${DOMAIN_NAME}" | grep paid-till | awk '{ print $NF }' | awk -F"T" '{ print $1 }' | sed 's/\./\//g'`
    else
    paid=`${WHOIS} "${DOMAIN_NAME}" | grep -E "(Expiration|Expiry Date)" | head -1 | awk '{ print $NF }' | awk -F"T" '{ print $1 }' | sed 's/-/\//g'`
    [ -z "${paid}" ] && exit $STATE_UNKNOWN
    paid_data="paid-till: ${paid}"
    fi

now=`date +"%s"`
paid_date=`date --date="${paid}" +"%s"`
remaining=`expr ${paid_date} - ${now}`

if [ ${remaining} -lt 0 ]; then
    echo "${DOMAIN_NAME} domain prosrali..."
    exit $STATE_CRITICAL
    fi

remaining_days=`expr ${remaining} / 86400`
echo "${DOMAIN_NAME} ${paid_data} remaining ${remaining_days} days"

[ ${remaining} -gt ${time_shift} ] && exit $STATE_OK
exit $STATE_WARNING