#!/bin/bash

base="`dirname "$0"`"

if [ ! -d "$base" -o ! -f "$base/netdata.c" -o ! -d "$base/web" ]
then
	echo >&2 "Cannot find my home directory '${base}'."
	exit 1
fi
cd "$base" || exit 1

# the detail of the data that will be kept in netdata
NETDATA_CONFIG_INTERNAL_UPDATE_EVERY=1

# how many entries to keep in memory
NETDATA_CONFIG_INTERNAL_HISTORY_LINES=2400

# the user to run netdata under
NETDATA_CONFIG_USER=nobody

# set to 1, to enable debugging
NETDATA_CONFIG_DEBUG=0

# our port
NETDATA_CONFIG_PORT=19999

if [ -f netdata.conf ]
then
	x="`grep "\[global\]" netdata.conf`"
	if [ -z "$x" ]
	then
		# import the old values
		cat netdata.conf | grep ^NETDATA_CONFIG_ >netdata.conf.tmp
		. netdata.conf.tmp
		rm netdata.conf.tmp

		mv netdata.conf netdata.conf.old
		echo "You are having an old config. Moved to netdata.conf.old"
	fi
fi

echo "Compiling netdata"
if [ $NETDATA_CONFIG_DEBUG -eq 1 ]
then
	ulimit -c unlimited
	gcc -Wall -ggdb -o netdata netdata.c -lpthread -lz || exit 1
	debug_opts="-df 0xfffffedf -dl netdata.log"
else
	gcc -Wall -O3 -o netdata netdata.c -lpthread -lz || exit 1
	debug_opts=
fi

echo "Stopping a (possibly) running netdata..."
killall netdata 2>/dev/null
killall tc-all.sh 2>/dev/null
sleep 2

echo "Starting netdata..."
if [ -f netdata.conf ]
then
	`pwd`/netdata
else
	touch netdata.conf

	if [ "$USER" = "root" ]
	then
		chown -R "$NETDATA_CONFIG_USER" web || exit 1
		chmod    0775 web   || exit 1
		chmod -R 0664 web/* || exit 1
		`pwd`/netdata $debug_opts -d -u $NETDATA_CONFIG_USER -t $NETDATA_CONFIG_INTERNAL_UPDATE_EVERY -l $NETDATA_CONFIG_INTERNAL_HISTORY_LINES -p $NETDATA_CONFIG_PORT || exit 1
	else
		echo >&2 "WARNING: NOT RUNNING AS ROOT - CANNOT SWITCH TO USER $NETDATA_CONFIG_USER"
		echo >&2 "WARNING: MAKE SURE FILES IN web/ ARE OWNED BY $USER - or it will not work"
		`pwd`/netdata $debug_opts -d -t $NETDATA_CONFIG_INTERNAL_UPDATE_EVERY -l $NETDATA_CONFIG_INTERNAL_HISTORY_LINES -p $NETDATA_CONFIG_PORT || exit 1
	fi

	sleep 2
	wget 2>/dev/null -O netdata.conf.new http://localhost:$NETDATA_CONFIG_PORT/netdata.conf
	mv netdata.conf.new netdata.conf

	echo "Hit http://127.0.0.1:$NETDATA_CONFIG_PORT/ from your browser."
	echo "You can edit config options in file netdata.conf"
fi

echo
echo "All Done."
echo