import argparse
import logging
import sys

from clan_cli.clan_uri import FlakeId
from clan_cli.completions import add_dynamic_completer, complete_machines
from clan_cli.machines.machines import Machine
from clan_cli.vars.get import get_var

from .prompt import prompt

log = logging.getLogger(__name__)


def get_command(machine: str, var_id: str, flake: FlakeId) -> None:
    _machine = Machine(name=machine, flake=flake)
    var = get_var(_machine, var_id)
    if sys.stdin.isatty():
        new_value = prompt(var.id, "hidden").encode("utf-8")
    else:
        new_value = sys.stdin.buffer.read()
    var.set(new_value)


def _get_command(args: argparse.Namespace) -> None:
    get_command(args.machine, args.var_id, args.flake)


def register_set_parser(parser: argparse.ArgumentParser) -> None:
    machines_arg = parser.add_argument(
        "machine",
        help="The machine to set a var for",
    )
    add_dynamic_completer(machines_arg, complete_machines)

    parser.add_argument(
        "var_id",
        help="The var id for which to set the value. Example: ssh-keys/pubkey",
    )

    parser.set_defaults(func=_get_command)