from __future__ import annotations

import logging

logger = logging.getLogger(__name__)


def resolve_merged_config(cfg: dict, account_id: str) -> dict:
    gc_config = cfg.get("channels", {}).get("googlechat", {}) if cfg else {}

    defaults = gc_config.get("accounts", {}).get("default", {})
    account_cfg = gc_config.get("accounts", {}).get(account_id, {})

    merged = {**gc_config, **defaults, **account_cfg}

    clear_base = {
        "serviceAccount",
        "serviceAccountFile",
        "audienceType",
        "audience",
        "webhookPath",
        "webhookUrl",
        "botUser",
        "name",
    }
    for field in clear_base:
        if field not in account_cfg and field not in defaults:
            merged.pop(field, None)

    return merged