#!/bin/bash

#    IngRRD (https://forge.riquer.fr/p/ingrrd/)
#    Copyright (C) 2014-2015  Vincent Riquer
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU Affero General Public License as
#    published by the Free Software Foundation, either version 3 of the
#    License, or (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU Affero General Public License for more details.
#
#    You should have received a copy of the GNU Affero General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.

. settings

if [[ $REQUEST_METHOD != POST ]] || [ ! -w "$rrdfile" ]
then
	cat <<-EOHead
		Content-type: text/plain
		Last-Modified: $(LC_ALL=C TZ=GMT date +'%a, %d %b %Y %X %Z')
		Expires: $(LC_ALL=C TZ=GMT date +'%a, %d %b %Y %X %Z')
		refresh: 0,url=/cgi/$webuser/add.html

	EOHead
	exit
fi

declare -A POST
exprdsname='^[[:upper:][:lower:]_]+$'
exprvalue='^-?[[:digit:]]+$'
while read dsname value
do
	if [[ $dsname =~ $exprdsname ]]	\
	&& [[ $value =~ $exprvalue ]]
	then
		POST["$dsname"]="$value"
	fi
done < <(
	sed 's/&/\n/g;s/=/ /g'
)
cat <<-EOHead
	Content-type: text/plain
	Last-Modified: $(LC_ALL=C TZ=GMT date +'%a, %d %b %Y %X %Z')
	Expires: $(LC_ALL=C TZ=GMT date +'%a, %d %b %Y %X %Z')
	refresh: 0,url=/cgi/$webuser/?start=${POST["start"]}&end=${POST["end"]}

EOHead

if [[ $webuser == $AUTH_USER || $webuser == dev ]]
then
	echo "Welcome agent $webuser"$'!\n\n'
else
	echo 'Nice try!'
	exit
fi

while read ds junk
do
	ds="${ds//ds[/}"
	ds="${ds//]*/}"
	datasets+=("$ds")
done < <(rrdtool info "$rrdfile" |grep index)
for ds in ${dsnames[@]}
do
	if [[ ! ${datasets[@]} =~ $ds ]]
	then
		cp -f "$rrdfile" "$rrdfile".bak_add_$ds
		./dsaddtor.pl "$rrdfile" $ds GAUGE $((48*60*60)) 0 NaN
	fi
done
data=N
for dsname in "${dsnames[@]}"
do
	data+=:${POST["$dsname"]:=U}
	template+="${template:+:}$dsname"
	echo "$dsname....${POST["$dsname"]}"
done

echo ${POST["innovator"]} > .innovator
rrdtool update "$rrdfile" -t $template "$data"