entrypoint

#!/bin/bash
set -eo pipefail

# if command starts with an option, prepend mysqld
if [ "${1:0:1}" = '-' ]; then
	set -- mysqld "$@"
fi

# skip setup if they want an option that stops mysqld
wantHelp=
for arg; do
	case "$arg" in
	-'?'|--help|--print-defaults|-V|--version)
		wantHelp=1
		break
		;;
	esac
done

_datadir() {
	"$@" --verbose --help --log-bin-index=`mktemp -u` 2>/dev/null | awk '$1 == "datadir" { print $2; exit }'
}

if [ "$1" = 'mysqld' -a -z "$wantHelp" ]; then
	# Get config
	DATADIR="$(_datadir "$@")"
	mkdir -p "$DATADIR"

	if [ ! -d "$DATADIR/mysql" ]; then
	if [ -z "$MYSQL_ROOT_PASSWORD" -a -z "$MYSQL_ALLOW_EMPTY_PASSWORD" ]; then
		echo >&2 'error: database is uninitialized and password option is not specified '
		echo >&2 '  You need to specify either of MYSQL_ROOT_PASSWORD, MYSQL_ALLOW_EMPTY_PASSWORD'
		exit 1
	fi

	mkdir -p "$DATADIR"

	echo 'Initializing database'
	mysql_install_db --datadir="$DATADIR" --rpm --keep-my-cnf
	echo 'Database initialized'

	"$@" --skip-networking &
	pid="$!"

	mysql=( mysql --protocol=socket -uroot )

	for i in {30..0}; do
		if echo 'SELECT 1' | "${mysql[@]}" &> /dev/null; then
		break
		fi
		echo 'MySQL init process in progress...'
		sleep 1
	done
	if [ "$i" = 0 ]; then
		echo >&2 'MySQL init process failed.'
		exit 1
	fi

	if [ -z "$MYSQL_INITDB_SKIP_TZINFO" ]; then
		# sed is for https://bugs.mysql.com/bug.php?id=20545
		mysql_tzinfo_to_sql /usr/share/zoneinfo | sed 's/Local time zone must be set--see zic manual page/FCTY/' | "${mysql[@]}" mysql
	fi

	"${mysql[@]}" <<-EOSQL
		-- What's done in this file shouldn't be replicated
		--  or products like mysql-fabric won't work
		SET @@SESSION.SQL_LOG_BIN=0;

		DELETE FROM mysql.user ;
		CREATE USER 'root'@'%' IDENTIFIED BY '${MYSQL_ROOT_PASSWORD}' ;
		GRANT ALL ON *.* TO 'root'@'%' WITH GRANT OPTION ;
		DROP DATABASE IF EXISTS test ;
		FLUSH PRIVILEGES ;
	EOSQL

	if [ ! -z "$MYSQL_ROOT_PASSWORD" ]; then
		mysql+=( -p"${MYSQL_ROOT_PASSWORD}" )
	fi

	if [ "$MYSQL_DATABASE" ]; then
		echo "CREATE DATABASE IF NOT EXISTS \`$MYSQL_DATABASE\` ;" | "${mysql[@]}"
		mysql+=( "$MYSQL_DATABASE" )
	fi

	if [ "$MYSQL_USER" -a "$MYSQL_PASSWORD" ]; then
		echo "CREATE USER '$MYSQL_USER'@'%' IDENTIFIED BY '$MYSQL_PASSWORD' ;" | "${mysql[@]}"

		if [ "$MYSQL_DATABASE" ]; then
		echo "GRANT ALL ON \`$MYSQL_DATABASE\`.* TO '$MYSQL_USER'@'%' ;" | "${mysql[@]}"
		fi

		echo 'FLUSH PRIVILEGES ;' | "${mysql[@]}"
	fi

	if [ ! -z "$MYSQL_ONETIME_PASSWORD" ]; then
	"${mysql[@]}" <<-EOSQL
		ALTER USER 'root'@'%' PASSWORD EXPIRE;
	EOSQL
	fi
	if ! kill -s TERM "$pid" || ! wait "$pid"; then
		echo >&2 'MySQL init process failed.'
		exit 1
	fi

	echo
	echo 'MySQL init process done. Ready for start up.'
	echo
	fi
fi

exec "$@"