# Example Usage
# ssh user@host "sudo -n bash -s" -- < ./commands/db-setup.sh 'rootPass' "maindb" "maindbPass"

if [ "$1" == "-h" ]; then
  echo "Usage:"
  echo "  ./db-setup.sh <rootPassword> <main-db-user> <main-db-user-password>"
  echo "  or"
  echo "  ./db-setup.sh"
  exit 0
fi

if [ -z "$1" ] && [ -z "$2" ] && [ -z "$3" ]; then
  read -sp "Set root password: " rootPassword
  read -sp $'\n'"Confirm root password: " confirmPassword
  read -p $'\n'"Main Username: " MAINDB
  read -sp "Main user's password: " PASSWDDB
else
  rootPassword="$1"
  confirmPassword="$1"
  MAINDB="$2"
  PASSWDDB="$3"
fi

export DEBIAN_FRONTEND="noninteractive"

if [ "$rootPassword" == "$confirmPassword" ]; then
  echo -e "mysql-server mysql-server/root_password password $rootPassword" | debconf-set-selections
  echo -e "mysql-server mysql-server/root_password_again password $rootPassword" | debconf-set-selections
  apt-get -y install mysql-server
else
  echo "Passwords do not match cancelling the installation"
  exit 1
fi

# Adapted from https://stackoverflow.com/questions/33470753/create-mysql-database-and-user-in-bash-script
# create random password
#PASSWDDB="$(openssl rand -base64 12)"

# replace "-" with "_" for database username
#MAINDB=${USER_NAME//[^a-zA-Z0-9]/_}

# mysql_secure_installation steps so you don't have too
# https://bertvv.github.io/notes-to-self/2015/11/16/automating-mysql_secure_installation/
mysql -uroot -p${rootPassword} -e "DELETE FROM mysql.user WHERE User='';" # remove anonymous users
mysql -uroot -p${rootPassword} -e "DELETE FROM mysql.user WHERE User='root' AND Host NOT IN ('localhost', '127.0.0.1', '::1');" # prevent root from logging in remotely
mysql -uroot -p${rootPassword} -e "DROP DATABASE test;" # remove the public test database
mysql -uroot -p${rootPassword} -e "DELETE FROM mysql.db WHERE Db='test' OR Db='test\_%';" # remove the public test database

# Setup the main database this machine will be used for
mysql -uroot -p${rootPassword} -e "CREATE DATABASE ${MAINDB} /*\!40100 DEFAULT CHARACTER SET utf8 */;"
mysql -uroot -p${rootPassword} -e "CREATE USER ${MAINDB}@'%' IDENTIFIED BY '${PASSWDDB}';"
mysql -uroot -p${rootPassword} -e "GRANT ALL PRIVILEGES ON ${MAINDB}.* TO '${MAINDB}'@'%';"
mysql -uroot -p${rootPassword} -e "FLUSH PRIVILEGES;"

exit 0