import logging
from pathlib import Path
from pprint import pformat

from dependency_injector import containers
from dependency_injector import providers
from serial import Serial

from .util import log_function_call

DEFAULTS_DIR = Path(__file__).parent / "defaults"
CONFIG_FILE = DEFAULTS_DIR / "config.yml"

_logger = logging.getLogger(__name__)


class Container(containers.DeclarativeContainer):
    config = providers.Configuration("config")

    serial = providers.Factory(
        Serial,
        port=config.device_id[config.role].required(),
        baudrate=config.baudrate.required(),
    )


@log_function_call
def get_initialize_container() -> Container:
    logger = _logger.getChild("initialize_container")

    logger.debug("initialize container...")
    container = Container()

    logger.debug(f"initialize container with defaults from config file: {CONFIG_FILE}")
    container.config.from_yaml(CONFIG_FILE, required=True)

    current_dir = Path.cwd()
    is_searching = True
    while is_searching:
        config_file = current_dir / "monsun_config.yml"
        if config_file.is_file():
            logger.debug(f"initialize container from user config file: {config_file}")
            container.config.from_yaml(config_file, required=True)
            break
        else:
            current_dir = current_dir.parent

        if str(current_dir) == current_dir.anchor:
            is_searching = False

    config_file = Path("/var/config/monsun_config.yml")
    if config_file.is_file():
        logger.debug(f"initialize container from config file: {config_file}")
        container.config.from_yaml(config_file, required=True)

    logger.debug(f"container config:\n{pformat(container.config())}")
    return container