import argparse
import keyring
import os
import subprocess


def keyring_get_password(service_name, username):
    value = ""
    while value == "":
        value = keyring.get_password(service_name, username)
    return value


if __name__ == "__main__":
    parser = argparse.ArgumentParser(description="Helper script for working with restic backups")

    parser.add_argument("--service", type=str, required=True,
                        help="Service with whose backup to work with")
    parser.add_argument("--volume", type=str, required=True,
                        help="Volume with whose backup to work with")
    parser.add_argument('rest', nargs=argparse.REMAINDER)

    args = parser.parse_args()

    scw_project_id = keyring_get_password("scaleway", "access_key")
    scw_secret_key = keyring_get_password("scaleway", "secret_key")
    restic_password = keyring_get_password("restic", "password")

    scw_environ = {
        "AWS_ACCESS_KEY_ID": scw_project_id,
        "AWS_SECRET_ACCESS_KEY": scw_secret_key,
        "RESTIC_PASSWORD": restic_password,
    }
    environ = {**os.environ, **scw_environ}
    bucket_name = f"the-nine-worlds---{args.service}---{args.volume}"

    cmd = ["restic",
           "--option", "s3.storage-class=ONEZONE_IA",
           "--repo", f"s3:https://s3.fr-par.scw.cloud/{bucket_name}"]
    cmd += args.rest

    output = subprocess.run(cmd, env=environ, check=False)
    exit(output.returncode)