import os
import sys
from datetime import timedelta

# 获取 exe 的真实路径
exe_dir = os.path.dirname(sys.executable) if getattr(sys, 'frozen', False) else os.path.dirname(os.path.abspath(__file__))

class Config:
    SECRET_KEY = os.environ.get('SECRET_KEY') or 'your-secret-key-here'
    # 确保 instance 文件夹存在
    instance_path = os.path.join(exe_dir, 'instance')
    if not os.path.exists(instance_path):
        os.makedirs(instance_path)

    SQLALCHEMY_DATABASE_URI = os.environ.get('DATABASE_URL') or \
        'sqlite:///' + os.path.join(instance_path, 'navigation.db')
    SQLALCHEMY_TRACK_MODIFICATIONS = False
    PERMANENT_SESSION_LIFETIME = timedelta(days=1)