from flask_apscheduler import APScheduler
from flask_login import LoginManager
from flask_sqlalchemy import SQLAlchemy

db = SQLAlchemy()
login_manager = LoginManager()
login_manager.login_view = "auth.login"
login_manager.login_message = "请先登录后再访问该页面"

# 通过 Flask-APScheduler 集成 APScheduler，方便在应用上下文中管理后台任务
scheduler = APScheduler()