#!/bin/bash
# info: export rrd charts as json
# options: [CHART] [TIMESPAN]
#
# example: v-export-rrd chart format

#----------------------------------------------------------#
#                Variables & Functions                     #
#----------------------------------------------------------#

chart=$1
timespan=${2-daily}

# Includes
# shellcheck source=/etc/hestiacp/hestia.conf
source /etc/hestiacp/hestia.conf
# shellcheck source=/usr/local/hestia/func/main.sh
source $HESTIA/func/main.sh
# load config file
source_conf "$HESTIA/conf/hestia.conf"

#----------------------------------------------------------#
#                    Verifications                         #
#----------------------------------------------------------#

check_args '1' "$#" 'chart'

#----------------------------------------------------------#
#                       Action                             #
#----------------------------------------------------------#

function generate_load_table() {
	rrdtool xport --json -s $start -e $end --step $step \
		DEF:la=$RRD/la/la.rrd:LA:AVERAGE \
		DEF:pr=$RRD/la/la.rrd:PR:AVERAGE \
		XPORT:la:Load \
		XPORT:pr:Processes
}

function generate_mem_table() {
	rrdtool xport --json -s $start -e $end --step $step \
		DEF:used=$RRD/mem/mem.rrd:RAM:AVERAGE \
		DEF:swap=$RRD/mem/mem.rrd:SWAP:AVERAGE \
		DEF:free=$RRD/mem/mem.rrd:FREE:AVERAGE \
		XPORT:used:Used \
		XPORT:swap:Swap \
		XPORT:free:Free
}

function generate_apache2_table() {
	rrdtool xport --json -s $start -e $end --step $step \
		DEF:a=$RRD/web/apache2.rrd:A:AVERAGE \
		XPORT:a:Connections
}

function generate_httpd_table() {
	rrdtool xport --json -s $start -e $end --step $step \
		DEF:a=$RRD/web/httpd.rrd:A:AVERAGE \
		XPORT:a:Connections
}

function generate_nginx_table() {
	rrdtool xport --json -s $start -e $end --step $step \
		DEF:a=$RRD/web/nginx.rrd:A:AVERAGE \
		XPORT:a:Connections
}

function generate_ftp_table() {
	rrdtool xport --json -s $start -e $end --step $step \
		DEF:a=$RRD/ftp/ftp.rrd:A:AVERAGE \
		XPORT:a:Connections
}

function generate_ssh_table() {
	rrdtool xport --json -s $start -e $end --step $step \
		DEF:a=$RRD/ssh/ssh.rrd:A:AVERAGE \
		XPORT:a:Connections
}

function generate_mysql_table() {
	if [ -f "$RRD/db/mysql_$host.rrd" ]; then
		rrdtool xport --json -s $start -e $end --step $step \
			DEF:a=$RRD/db/mysql_$host.rrd:A:AVERAGE \
			DEF:s=$RRD/db/mysql_$host.rrd:S:AVERAGE \
			XPORT:a:Queries \
			XPORT:s:Slow
	else
		echo "Does not exists"
		exit 1
	fi
}

function generate_pgsql_table() {
	if [ -f "$RRD/db/pgsql_$host.rrd" ]; then
		rrdtool xport --json -s $start -e $end --step $step \
			DEF:a=$RRD/db/pgsql_$host.rrd:A:AVERAGE \
			DEF:t=$RRD/db/pgsql_$host.rrd:T:AVERAGE \
			XPORT:a:Queries \
			XPORT:t:Transactions
	else
		echo "Does not exists"
		exit 1
	fi
}

function generate_mail_table() {
	rrdtool xport --json -s $start -e $end --step $step \
		DEF:a=$RRD/mail/mail.rrd:A:AVERAGE \
		XPORT:a:Emails
}

function generate_net_table() {
	if [ -f "$RRD/net/$host.rrd" ]; then
		rrdtool xport --json -s $start -e $end --step $step \
			DEF:inoctets=$RRD/net/$host.rrd:RX:AVERAGE \
			DEF:outoctets=$RRD/net/$host.rrd:TX:AVERAGE \
			XPORT:inoctets:"Input (rx)" \
			XPORT:outoctets:"Output (tx)"
	else
		echo "Does not exists"
		exit 1
	fi
}

if [ "$timespan" = "weekly" ]; then
	start=$(date -d "7 days ago" +%s)
	# every 30 min
	step=3600
elif [ "$timespan" = "monthly" ]; then
	start=$(date -d "1 month ago" +%s)
	step=21600
elif [ "$timespan" = "yearly" ]; then
	start=$(date -d "1 year ago" +%s)
	step=172800
else
	start=$(date -d "1 day ago" +%s)
	# every 5min
	step=300
fi
end=$(date +%s)

host=$(echo $chart | cut -d'_' -f2)
chart=$(echo $chart | cut -d'_' -f1)

case $chart in
	"la")
		generate_load_table
		;;

	"mem")
		generate_mem_table
		;;

	"apache2")
		generate_apache2_table
		;;

	"httpd")
		generate_httpd_table
		;;

	"nginx")
		generate_nginx_table
		;;

	"ftp")
		generate_ftp_table
		;;

	"ssh")
		generate_ssh_table
		;;

	"mysql")
		generate_mysql_table
		;;

	"pgsql")
		generate_pgsql_table
		;;

	"mail")
		generate_mail_table
		;;

	"net")
		generate_net_table
		;;

	\
		*)
		echo "Does not exists"
		exit 1
		;;
esac
