#!/bin/bash
#
# Copyright (C) 2003 Ondrej Lhotak
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#

function next_sub_num() {
    MAX=0;
    for SUB in `ls $CONTEST_DIR/var/submissions`; do
        NUM=${SUB/.*/};
        if [ $NUM -gt $MAX ]; then
            MAX=$NUM;
        fi
    done
    NEXT_SUB_NUM=$(($MAX+1));
}

function process_submission() {
    BN=`basename $1`;
    DIR=`dirname $1`;
    TEAM=`basename $DIR`;
    SUBNAME=${BN/.done/};
    next_sub_num;
    mv $DIR/$SUBNAME $CONTEST_DIR/var/submissions/${NEXT_SUB_NUM}.$TEAM.$SUBNAME
    rm -f $1;
    echo "`$CONTEST_DIR/bin/timestamp`:S:${NEXT_SUB_NUM}:$TEAM:$SUBNAME" >> $CONTEST_DIR/var/log
}

CONTEST_DIR=`dirname $0`/..;

if [ -e $CONTEST_DIR/var/pid.arbiter ]; then
    echo Arbiter is already running.;
    exit 1;
fi
echo $$ > $CONTEST_DIR/var/pid.arbiter;
trap "rm $CONTEST_DIR/var/pid.arbiter" EXIT KILL

COUNT=0;
while true; do
    COUNT=$(($COUNT+1));
    if [ $COUNT = 3 ]; then
        $CONTEST_DIR/bin/make_scoreboard > $CONTEST_DIR/var/scoreboard.new;
        mv $CONTEST_DIR/var/scoreboard.new $CONTEST_DIR/var/scoreboard;
        COUNT=0;
    fi
    sleep 1;
    if [ "`echo $CONTEST_DIR/var/submitdirs/*/*.done`" != "$CONTEST_DIR/var/submitdirs/*/*.done" ] ; then
        for FILE in $CONTEST_DIR/var/submitdirs/*/*.done; do
            process_submission $FILE;
        done
    fi
done

