from typing import Any, cast
import yaml

from config import validator
from config.dtype import ArchMgrConfig
from config.merger import merge_configs


def _load_config_file(file: str):
    with open(file, "r") as f:
        parsed = yaml.load(f, Loader=yaml.FullLoader)
    return parsed


def load_config(file: str) -> ArchMgrConfig:
    # Load and validate initial config
    try:
        loaded_conf = _load_config_file(file)
    except Exception:
        return {}
    if not validator.validate(loaded_conf):
        return {}

    configuration = cast(dict[str, Any], loaded_conf)
    requires = cast(list[str], configuration.pop("requires"))
    conf = cast(ArchMgrConfig, configuration)

    # Recursively load files
    for conf_file in requires:
        conf = merge_configs(conf, load_config(conf_file))

    return conf