from argparse import ArgumentParser
from pathlib import Path

from openwrt_backup.retrieve import make_backup_on_remote, retrieve_backup_on_remote
from openwrt_backup.utils import (
    client_from_config,
    exec_remote,
    get_new_backup_filepath,
)
from openwrt_backup.config import CONFIG_DATA


def do_backup(
    config_hostname,
    ssh_config_root: Path,
    backup_path: Path,
    tmp_path: Path,
    time_format,
    dry,
):
    client = client_from_config(config_hostname, ssh_config_root)
    stdout, stderr = exec_remote(client, "echo $HOSTNAME")
    hostname = stdout.read().decode().rstrip()
    dest = get_new_backup_filepath(backup_path, time_format, hostname)
    backup_on_remote = make_backup_on_remote(client, tmp_path)
    retrieve_backup_on_remote(client, backup_on_remote, dest)


def main():
    parser = ArgumentParser()
    parser.add_argument("-d", "--dry", action="store_true", help="Don't do anything")
    parser.add_argument("--dump-config", action="store_true", help="Show config")
    parser.add_argument(
        "-c" "--config", help="config path for backup script", default=None
    )
    parser.add_argument(
        "name", help="hostname in ssh_config file for openwrt device we need to backup"
    )
    args = parser.parse_args()
    do_backup(
        args.name,
        Path(CONFIG_DATA["ssh"]["root"]).expanduser(),
        Path(CONFIG_DATA["backup"]["path"]).expanduser(),
        Path(CONFIG_DATA["router"]["temp"]),
        CONFIG_DATA["backup"]["time_format"],
        args.dry,
    )