#!/bin/bash
#
# Configure MySQL
#
#    Copyright (C) 2017  AleaJactaEst
#
#    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/>.

declare DEBUG=0

usage()
{
cat << EOF
usage:$0 [options]
  prepare mysql (create directory, update configuration)

options:
  -h, --help              : Show this help
  -d, --debug             : Show debug message
EOF
}

function msg_debug()
{
   if [[ $DEBUG -ne 0 ]]
   then
      echo "$(date "+%Y/%m/%d %H:%M:%S") DEBUG - $*"
   fi
}

function msg_info()
{
   echo "$(date "+%Y/%m/%d %H:%M:%S") INFO - $*"
}

function msg_error()
{
   echo "$(date "+%Y/%m/%d %H:%M:%S") ERROR - $*" >&2
}

#####################
# MAIN
#####################
source /opt/ext/servercontainer_function.sh
msg_info "$(basename $0) => START"

while test $# -gt 0
do
   case "$1" in
      -h|--help)
         usage
         exit 1
         ;;
      -d|--debug) 
         DEBUG=1
         shift
         ;;
      *)
         msg_error "options '$1' not recoginze"
         usage
         exit 1
         ;;
   esac
done

####################################
# Load Environment
####################################
msg_debug "Load environment"
if [[ ! -f /opt/khanat_config.sh ]]
then
   echo "ERROR - missing /opt/khanat_config.sh"
   exit 2
fi
source /opt/khanat_config.sh

####################################
# Configure Log MySQL
####################################
msg_debug "Configure Log"
mkdir -p /home/gameserver/log/mysql  || exit 2
chown -R gameserver:$(id -g -n gameserver) /home/gameserver/log || exit 2 


####################################
# Install Database
####################################
msg_debug "Install Database"
/usr/bin/mysql_install_db --user=gameserver --skip-name-resolve || exit 2


####################################
# Start Database
####################################
# Start the MySQL daemon in the background.
msg_debug "Start database"
/usr/sbin/mysqld &
mysql_pid=$!

# Wait mysql start
msg_info "Check database is started"
sleep 1
until /usr/bin/mysqladmin ping >/dev/null 2>&1
do
   echo -n "."
   sleep 1
done
echo ""
sleep 1

####################################
# Update root password (mysql)
####################################
# Initialize password root (to empty)
msg_debug "configure password root for database"
/usr/bin/mysqladmin -u root password ''  || exit 2

mysql -u root -e "GRANT ALL PRIVILEGES on *.* TO 'debian-sys-maint'@'localhost' IDENTIFIED BY '"$(awk '{if($1 == "password"){print $3;exit 0}}' /etc/mysql/debian.cnf)"' WITH GRANT OPTION; FLUSH PRIVILEGES;"  || exit 2

####################################
# Stop Database
####################################
# Stop MySQL
msg_debug "Stop database"
/usr/bin/mysqladmin shutdown

# Wait MySQL stop
wait $mysql_pid

####################################
# End
####################################
msg_info "$(basename $0) => END"