#!/bin/bash
# /////////////////////////////////////////////////////////////////////////////
# //BOCA Online Contest Administrator
# //    Copyright (C) 2016- by BOCA Development Team (bocasystem@gmail.com)
# //
# //    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 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 General Public License for more details.
# //    You should have received a copy of the GNU General Public License
# //    along with this program.  If not, see <http://www.gnu.org/licenses/>.
# /////////////////////////////////////////////////////////////////////////////
# // Last modified 15/Sep/2016 by brunoribas@utfpr.edu.br

if ! whoami | grep -q '^root$' ; then
  echo "$0 must be run as root"
  exit 1
fi

if (( $# != 1 )); then
  echo "Usage:"
  echo "  $0 bdserver-ip|localhost"
  echo
  echo "Parameter should be localhost if the postgres is running localhost, or"
  echo "the IP address of the postgres"
  exit 0
fi

bdservernew=$1

. /etc/boca.conf

privatedir=$bocadir/src/private

CHANGE=n
if [[ "x$bdserver" == "x" ]]; then
  echo "bdserver=$bdservernew" >> /etc/boca.conf
else
  CHANGE=y
  VV="$(grep -v '^bdserver=' /etc/boca.conf)"
  printf "bdserver=$bdservernew\n$VV\n" > /etc/boca.conf
fi

bdserver=$bdservernew

#update conf.php
# PASSWD should be environment defined. While installing boca-common package
# this variable will be set
PASS=$PASSWD
if [[ "x$PASS" == "x" ]]; then
  read -p "Enter DB password: " -s PASS
fi
PASSK=`makepasswd --chars 20`
awk -v boca="$bdserver" -v pass="$PASS" -v passk="$PASSK" '{ if(index($0,"[\"dbpass\"]")>0) \
  print "$conf[\"dbpass\"]=\"" pass "\";"; \
  else if(index($0,"[\"dbhost\"]")>0) print "$conf[\"dbhost\"]=\"" boca "\";"; \
  else if(index($0,"[\"dbsuperpass\"]")>0) print "$conf[\"dbsuperpass\"]=\"" pass "\";"; \
  else if(index($0,"[\"key\"]")>0) print "$conf[\"key\"]=\"" passk "\";"; else print $0; }' \
  < $privatedir/conf.php > $privatedir/conf.php1
mv -f $privatedir/conf.php1 $privatedir/conf.php

chown www-data.www-data $privatedir/conf.php
chmod 600 $privatedir/conf.php

exit 0