"""配置管理 — JSON 配置读写"""

import json
import os
from pathlib import Path

CONFIG_FILE = Path(__file__).parent / "config.json"

DEFAULT_CONFIG = {
    "monitor_enabled": False,
    "knowledge_base_path": "",
    "poll_interval_seconds": 2.0,
    "wechat_enabled": True,
    "qq_enabled": True,
    "auto_reply_enabled": False,
    "auto_reply_min_score": 0.35,
    "qq_nicknames": [],  # 需要从消息文本开头剥离的QQ昵称列表
}


def load_config() -> dict:
    """加载配置，文件不存在则返回默认"""
    if not CONFIG_FILE.exists():
        return DEFAULT_CONFIG.copy()
    try:
        with open(CONFIG_FILE, "r", encoding="utf-8") as f:
            data = json.load(f)
        # 合并默认值，保证新字段不缺失
        merged = DEFAULT_CONFIG.copy()
        merged.update(data)
        return merged
    except (json.JSONDecodeError, OSError):
        return DEFAULT_CONFIG.copy()


def save_config(cfg: dict):
    """保存配置"""
    merged = DEFAULT_CONFIG.copy()
    merged.update(cfg)
    with open(CONFIG_FILE, "w", encoding="utf-8") as f:
        json.dump(merged, f, ensure_ascii=False, indent=2)