#!/bin/sh
set -e

echo

dirisempty()
{
	[ -z "$( ls -A "$1" )" ]
}

# install database if doesn't exist
if dirisempty /db
then
	echo "database doesn't exist. creating it..."
	echo
	chmod -R 777 /db
	mariadb-install-db --user=www --datadir=/db
	echo "creating database..."
	DATABASE_PWD="$(cat /run/secrets/database-pwd)"
	if ! [[ "$DATABASE_PWD" =~ ^[a-zA-Z0-9_]+$ ]]
	then
		echo "the DB password must contain only letters, digits or '_'."
		echo
		exit 1
	fi
	echo '
		FLUSH PRIVILEGES;
		CREATE DATABASE wp;
		GRANT ALL PRIVILEGES ON wp.* TO www IDENTIFIED BY "'$DATABASE_PWD'";
		FLUSH PRIVILEGES;
	' | mariadbd -u root --bootstrap
	echo
	echo "database created!"
	echo
fi

echo "to recreate a new database, remove the db volume of this compose."
echo

# run mariadb
mariadbd -u root