#!/bin/bash

last_run=$(stat -c '%Y' /opt/includes/.saltrunning)
uptime_seconds=$(awk '{print $1}' /proc/uptime | cut -d. -f1)
now=$( date +%s )
ifdown="/opt/includes/.cfm_downtime"
saltenv=$(grep ^saltenv /etc/salt/minion | awk '{print $NF}')

if [[ -e "${ifdown}" ]]; then
  downtimed_since=$(date -d @"$(stat -c '%Y' "${ifdown}")" "+%b %d, %Y")
  downtimed_by=$(awk -F'|' '{print $1}' "${ifdown}")
  downtime_dur=$(awk -F'|' '{print $2}' "${ifdown}")
  reason=$(awk -F'|' '{print $NF}' "${ifdown}")
fi

check_status() {
  # see if downtimed
  if [ -f ${ifdown} ]; then
    if [[ $(awk -F'|' '{print NF; exit}' "${ifdown}") -eq 4 ]]; then
      echo -n "salt_running - Salt is downtimed for ${downtime_dur} by ${downtimed_by} - ${reason}"
      exit 1
    else
      echo -n "salt_running - Salt is downtimed permanently since ${downtimed_since} by ${downtimed_by} - ${reason}"
      exit 1
    fi
    echo "(in *${saltenv}* environment)"
  #Check if /opt/includes/.saltrunning exists or has not updated in more than 2 hours
  elif [[ ! -e /opt/includes/.saltrunning ]] || [[ $(( now - last_run )) -gt 7200 ]]; then
    echo "salt_running - Salt has not been updating 2 or more hours and in *${saltenv}* environment"
    exit 2
  # otherwise okay
  else
    if [ "${saltenv}" == "production" ]; then
      echo "salt_running - Salt is running okay"
      exit 0
    elif [ "${saltenv}" == "development" ]; then
      echo "salt_running - Salt is running in *${saltenv}* environment"
      exit 1
    fi
  fi
}

if [ "${saltenv}" == "development" ] ||  [ "${saltenv}" == "production" ]; then
  # Check if uptime is greater than or equal to 2 hours (7200 seconds)
  if (( uptime_seconds >= 7200 )); then
    check_status
  else
    echo "salt_running - Uptime is less than 2 hours"
    exit 0
  fi
else
  echo "salt_running - Unknown Salt environment! Please check."
  exit 1
fi