#!/usr/bin/python3

import os
import sys
import yaml


def migrate(values):
    if values["storage"].get("is_data_in_the_same_volume", False):
        raise Exception(
            "You are still using the old storage configuration. "
            "You need to migrate your storage configuration first in order to upgrade."
        )
    values["storage"].pop("is_data_in_the_same_volume")
    return values


if __name__ == "__main__":
    if len(sys.argv) != 2:
        exit(1)

    if os.path.exists(sys.argv[1]):
        with open(sys.argv[1], "r") as f:
            print(yaml.dump(migrate(yaml.safe_load(f.read()))))