#!/bin/bash

####################################################################################################################
#
# full dokumentation on https://pushover.net/api
#
# POST an HTTPS request to https://api.pushover.net/1/messages.json with the following parameters:
#	token (required) - your application's API token
#	user (required) - the user/group key (not e-mail address) of your user (or you), 
#		viewable when logged into our dashboard (often referred to as USER_KEY in our documentation and code examples)
#	message (required) - your message 
#
#    Some optional parameters may be included:
#	device - your user's device name to send the message directly to that device, 
#		rather than all of the user's devices (multiple devices may be separated by a comma)
#	title - your message's title, otherwise your app's name is used
#	url - a supplementary URL to show with your message
#	url_title - a title for your supplementary URL, otherwise just the URL is shown
#	priority - send as 
#		-2 to generate no notification/alert, 
#		-1 to always send as a quiet notification,
#		 0 (default) to send notification with sound, vibration and display(not in quiet hours) 
#		 1 to display as high-priority and bypass the user's quiet hours, or 
#		 2 to also require confirmation from the user
#			retry
#			expire
#	timestamp - a Unix timestamp of your message's date and time to display to the user, rather than the time your message is received by our API
#	sound - the name of one of the sounds supported by device clients to override the user's default sound choice 
#
# That's it. Make sure your application is friendly to our API servers and you're all set.
# For more information on each parameter, keep reading or jump to a section at the left.
#
# Need help using our API or found an error in the documentation? Drop us a line. 
#
####################################################################################################################

logpath="/var/log/pushover_icinga.txt"
ICINGA2HOST="$(hostname)"
CURLPROXY=""
debug="1"

#####################################################
#Übergebene Parameter
#
#    PUSHOVERUSER = "$user.vars.pushover_user$"
#    PUSHOVERTOKEN = "$user.vars.pushover_token$" 
#    PUSHOVERDEVICE = "$user.vars.pushover_device$"
#
#    PUSHOVERPRIORITY = "$service.vars.pushover_priority$"
#    PUSHOVERRETRY = "$service.vars.pushover_retry$"
#    PUSHOVEREXPIRE = "$service.vars.pushover_expire$" 
#
#    NOTIFICATIONTYPE = "$notification.type$"
#    NOTIFICATIONCOMMENT = "$notification.comment$"
#    NOTIFICATIONAUTHOR = "$notification.author$"
#
#    ICINGALONGDATETIME = "$icinga.long_date_time$"
#
#    HOSTNAME = "$host.name$"
#    SERVICENAME = "$service.name$"
#    HOSTDISPLAYNAME = "$host.display_name$"
#    SERVICESTATE = "$service.state$"
#    SERVICEOUTPUT = "$service.output$"
#
#####################################################

#***** Service Monitoring on $ICINGA2HOST *****
PUSHOVERMESSAGE=$(cat << EOF
***** Service Monitoring on icinga *****
$SERVICEDISPLAYNAME on $HOSTDISPLAYNAME is ${SERVICESTATE}!
Info:    $SERVICEOUTPUT
When:    $ICINGALONGDATETIME
Service: $SERVICENAME
Host:    $HOSTNAME
EOF
)

#Wenn ein Kommentar eingetragen wurde (Downtimekommentar, Benachrichtigungskommentar), wird dieser angehangen
if [ -n "$NOTIFICATIONCOMMENT" ]
then
PUSHOVERMESSAGE=$(cat << EOF
$PUSHOVERMESSAGE
Comment: $NOTIFICATIONCOMMENT
Author:  $NOTIFICATIONAUTHOR
EOF
)
fi

PUSHOVERTITLE="$NOTIFICATIONTYPE - $HOSTDISPLAYNAME - $SERVICEDISPLAYNAME is $SERVICESTATE"

#Wenn die Priorität 2 vergeben wurde, ist ein retry zwingend erforderlich
#Sollte retry nicht gesetzt sein, wird er auf 30 gesetzt
if [ "$PUSHOVERPRIORITY" = "2" ] && [ "$PUSHOVERRETRY" = "" ]
then
	PUSHOVERRETRY="30"
fi

#Wenn die Priorität 2 vergeben wurde, ist ein expire zwingend erforderlich
#Sollte expire nicht gesetzt sein, wird er auf 300 gesetzt
if [ "$PUSHOVERPRIORITY" = "2" ] && [ "$PUSHOVEREXPIRE" = "" ]
then
	PUSHOVEREXPIRE="300"
fi


#Kommando, um per curl die Pushover-message zu verschicken
failstate=$(curl \
  --silent \
  --insecure --proxy "$CURLPROXY" \
  --form-string "token=$PUSHOVERTOKEN" \
  --form-string "user=$PUSHOVERUSER" \
  --form-string "message=$PUSHOVERMESSAGE" \
  --form-string "title=$PUSHOVERTITLE" \
  --form-string "priority=$PUSHOVERPRIORITY" \
  --form-string "retry=$PUSHOVERRETRY" \
  --form-string "expire=$PUSHOVEREXPIRE" \
  --form-string "device=$PUSHOVERDEVICE" \
  --location https://api.pushover.net/1/messages.json) 


#Wenn das debugging eingeschaltet ist, wird die folgende Meldung ausgegeben
#$logpath sollte vorhanden sein und auf nagios:nagios gesetzt sein
if [ "$debug" = "1" ]
then
cat << EOF >> "$logpath"
###########################################
Debugging-Tool
###########################################
DatumZeit:		$(date)
PUSHOVERTOKEN:		$PUSHOVERTOKEN
PUSHOVERUSER:		$PUSHOVERUSER
PUSHOVERTITLE:		$PUSHOVERTITLE
PUSHOVERDEVICE:		$PUSHOVERDEVICE
PUSHOVERPRIORITY:	$PUSHOVERPRIORITY
PUSHOVERRETRY:		$PUSHOVERRETRY
PUSHOVEREXPIRE:		$PUSHOVEREXPIRE
NOTIFICATIONTYPE:	$NOTIFICATIONTYPE
NOTIFICATIONCOMMENT:	$NOTIFICATIONCOMMENT
NOTIFICATIONAUTHOR:	$NOTIFICATIONAUTHOR
HOSTDISPLAYNAME:	$HOSTDISPLAYNAME
SERVICEDISPLAYNAME:	$SERVICEDISPLAYNAME
SERVICESTATE:		$SERVICESTATE
ICINGALONGDATETIME:	$ICINGALONGDATETIME
ICINGA2HOST:		$ICINGA2HOST
SERVICEOUTPUT:		$SERVICEOUTPUT
SERVICENAME:		$SERVICENAME
pushover json output:	$failstate

EOF
fi