"""
服务器配置
"""
import json
import os
import sys


def _resolve_path(rel_path):
    """解析路径：打包后相对于可执行文件，开发时相对于脚本目录"""
    if getattr(sys, 'frozen', False):
        base = os.path.dirname(sys.executable)
    else:
        base = os.path.dirname(os.path.abspath(__file__))
    return os.path.normpath(os.path.join(base, rel_path))


class Config:
    def __init__(self, config_file='config.json'):
        self.config_file = _resolve_path(config_file)
        # 数据库路径：开发环境在项目根目录，打包后在 exe 同级
        if getattr(sys, 'frozen', False):
            db_path = _resolve_path('database/chat.db')
        else:
            db_path = _resolve_path('../database/chat.db')
        self.config = {
            'host': '0.0.0.0',
            'port': 8888,
            'database': db_path,
        }
        self._load()

    def _load(self):
        if os.path.exists(self.config_file):
            try:
                with open(self.config_file, 'r') as f:
                    self.config.update(json.load(f))
            except Exception:
                pass

    def get(self, key, default=None):
        return self.config.get(key, default)


config = Config()