#! /usr/bin/awk -f

BEGIN {
    # Set the correct value as any other AWK variable:
    #
    #   khatus_actuate_alert_to_notify_send -v display="$CORRECT_DISPLAY"
    #
    display = ":0"
}

/^ALERT / {
    src      = $2
    priority = $3
    subject  = $4
    sub("^" $1 " +" $2 " +" $3 " +" $4 " +", "")
    body     = $0

    sep = body ? "\n" : ""
    body = body sep "--" src
    urgency = priority
    sub("hi" , "critical", urgency)
    sub("med", "normal"  , urgency)

    cmd = \
        sprintf(\
            "DISPLAY=%s notify-send -u %s %s \" %s\"",
            display, urgency, subject, body \
        )
    system(cmd)
    next
}