#!/bin/sh
#Example wesnothd.cfg
#versions_accepted="1.5.0+svn"
#restart_command="run_server 1.5 &"

if [ $# -lt 1 ]; then
	echo "Syntax: $0 <server version> [<additional parameters for wesnothd>]" >&2
	exit 1
fi

SERVER=$1
shift
PARAMETERS=$*
SERVERBASE=$HOME/servers/$SERVER
SOURCE=$HOME/source/trunk

if ! [ -d "$SERVERBASE" ]; then
	echo "Server '$SERVER' not found." >&2
	exit 1
fi
[ -d "$SERVERBASE/logs" ] || mkdir $SERVERBASE/logs

THREADS=4
PORT=15000

case $SERVER in
	1.2 )	PORT=14999
		THREADS=30
		SOURCE=$HOME/source/1.2
		;;
	1.4 )	PORT=14998
		;;
	1.5* )	PORT=14999
		;;
	trunk )	PORT=15000
		;;
	* )
esac

ulimit -Ss 2048
ulimit -c unlimited

# send the standard server message to the appropriate server when killing it with ctrl+c
trap "$HOME/bin/send_server_message $SERVER; sleep 2; killall wesnothd-$SERVER -q; echo -n 'terminated: '; date; exit 0" SIGINT

while [ true ] 
do
	cd $SERVERBASE/build || exit 1
	if ! [ -x bin/wesnothd-$SERVER ]; then
		echo "Executable 'bin/wesnothd-$SERVER' not found." >&2
		exit 1
	fi
	DATE=$(date +"%Y%m%d-%H%M%S")
	if [ -f "$SERVERBASE/redirect.cfg" ]; then
		PORT=$(sed -re '/port=/!d;s/[ \t]*port="?([0-9]+)"?/\1/' $SERVERBASE/redirect.cfg)
	fi
	BUILDDIR=$(ls -ld $SERVERBASE/build | sed -e 's,.*\(\.\./builds/wesnothd-.*/\),\1,')
	REV=r$(echo "$BUILDDIR" | sed -re "s,.*wesnothd-svn-([0-9:SM]+)_$SERVER/$,\1,")
	LOG="wesnothd.$DATE.$REV.log"
	COMMAND="bin/wesnothd-$SERVER -c $SERVERBASE/wesnothd.cfg --port $PORT --threads $THREADS $PARAMETERS"
	nice -n 3 $COMMAND > $SERVERBASE/logs/$LOG 2>&1 &
	PID=$!
	echo "started $SERVER server with command: '$COMMAND' (revision: $REV, pid: $PID) at: $DATE"
	# create some convenient links
	ln -s "$SERVERBASE/logs/$LOG" "$LOG.$PID"
	rm -f $SERVERBASE/old.log
	mv $SERVERBASE/current.log $SERVERBASE/old.log > /dev/null 2>&1
	ln -s "logs/$LOG" $SERVERBASE/current.log
	# wait a bit so the server is likely up and listening
	sleep 1
	cat $SERVERBASE/banlist 2> /dev/null | while read -r ip time reason; do $HOME/bin/send_server_command $SERVER ban "$ip $time $reason"; done
	if [ "$SERVER" = "1.2" ]; then
		rm -f $SERVERBASE/oldlobby.log
		mv $SERVERBASE/currentlobby.log $SERVERBASE/oldlobby.log > /dev/null 2>&1
		ln -s "$SERVERBASE/logs/lobby.$DATE.$REV.log" $SERVERBASE/currentlobby.log
		cd $SOURCE/utils/
		./mp-lobby-logger.pl -j -p $PORT -l $SERVERBASE/currentlobby.log >> $SERVERBASE/logs/lobby-chat.log 2>&1 &
		cd $SERVERBASE/build/
	fi
	# wait for the server to terminate
	wait $PID
	EXIT_CODE=$?
	echo "wesnothd exited with code: $EXIT_CODE"
	# need to use the recorded path since the build/ symlink might have changed
	mv "$SERVERBASE/$BUILDDIR/gmon.out" "$SERVERBASE/$BUILDDIR/gmon.$DATE.$REV.out" > /dev/null 2>&1
	# check for return code if not zero or 98 (port in use) the server should be restarted
	if [ "$EXIT_CODE" = "0" || "$EXIT_CODE" = "98" ]; then
		echo "run_server script shutting down."
		exit 0
	fi
done