#!/bin/sh

# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2018-present Team LibreELEC (https://libreelec.tv)

_create_bin_link() {
  [ ! -L ${ADDON_DIR}/bin/${2} ] && ln -sfn ${1} ${ADDON_DIR}/bin/${2}
}

. /etc/profile
oe_setup_addon service.mariadb

# create dir for socket and pid
mkdir -p /run/mysqld

# exit if already running
PID=$(ps aux | awk '/\/bin\/mariadbd/ {print $1; exit 0}')
if [ -n "${PID}" ]; then
  echo "MariaDB server is already running"
  exit 0
fi

# create symbolic links
_create_bin_link mariadb                     mysql
_create_bin_link mariadb-admin               mysqladmin
_create_bin_link mariadb-dump                mysqldump
_create_bin_link mariadb-secure-installation mysql_secure_installation
_create_bin_link mariadb-upgrade             mysql_upgrade
_create_bin_link mariadb-install-db          mysql_install_db

# copy config file
if [ ! -f ${ADDON_HOME}/my.cnf ]; then
  cp ${ADDON_DIR}/config/my.cnf ${ADDON_HOME}
fi

# install database
if [ ! -d "${ADDON_HOME}/data/mysql" ]; then
  mkdir -p ${ADDON_HOME}/data
  echo "Installing database"
  ${ADDON_DIR}/bin/mariadb-install-db --basedir=${ADDON_DIR} --datadir=${ADDON_HOME}/data
fi

# check for first run and generate passwords
if grep -q "@MYSQL_ROOT_PASS@" ${ADDON_HOME}/settings.xml; then
  MYSQL_ROOT_PASS="$(head /dev/urandom | tr -dc A-Za-z0-9 | head -c 8)"
  MYSQL_KODI_PASS="$(head /dev/urandom | tr -dc A-Za-z0-9 | head -c 8)"

  sed -e "s|@MYSQL_ROOT_PASS@|${MYSQL_ROOT_PASS}|g" \
      -e "s|@MYSQL_KODI_PASS@|${MYSQL_KODI_PASS}|g" \
      -i ${ADDON_HOME}/settings.xml
fi

# init script to create user kodi and change passwords
init_file=""
if [[ ! -f ${ADDON_HOME}/set_mysql_passwords.sql ]] || [[ ${ADDON_HOME}/settings.xml -nt ${ADDON_HOME}/set_mysql_passwords.sql ]]; then
  cat << SQL_DATA > ${ADDON_HOME}/set_mysql_passwords.sql
SET PASSWORD FOR 'root'@'localhost'=PASSWORD('${MYSQL_ROOT_PASS}');
CREATE USER IF NOT EXISTS 'kodi';
CREATE USER IF NOT EXISTS 'kodi'@'localhost';
SET PASSWORD FOR 'kodi'=PASSWORD('${MYSQL_KODI_PASS}');
SET PASSWORD FOR 'kodi'@'localhost'=PASSWORD('${MYSQL_KODI_PASS}');
GRANT ALL ON *.* TO 'kodi';
GRANT ALL ON *.* TO 'kodi'@'localhost';
flush privileges;
SQL_DATA

  init_file="--init-file=${ADDON_HOME}/set_mysql_passwords.sql"
fi

echo "Starting mariadbd"
MYSQL_HOME="${ADDON_HOME}" exec ${ADDON_DIR}/bin/mariadbd ${init_file} &