from quart import Quart,session,redirect, url_for
from quart_session import Session
from pymemcache.client import base
from .main import main
from .API import api
from functools import wraps
from myutils.ConfigManager import myCongif
# from quart_sqlalchemy import SQLAlchemy
# from flask_migrate import Migrate

#app.config['SECRET_KEY'] = 'mysecret'   #密钥 --需要放配置文件
#socketio = SocketIO(app)

# Create the custom backend for quart-session
class MemcachedSessionInterface: #只是能用，不明所以
    def __init__(self, client):
        self.client = client

    async def open_session(self, app, request):
        sid = request.cookies.get(app.session_cookie_name)
        if not sid:
            sid = self._generate_sid()
        val = await self.client.get(self.key_prefix + sid)
        if val is not None:
            return self._deserialize(val)
        return self._get_default_session()

    async def save_session(self, app, session, response):
        val = self._serialize(session)
        await self.client.set(self.key_prefix + session.sid, val, self.expire)

def create_app():
    app = Quart(__name__)
    #相关配置--设置各种配置选项，这些选项会在整个应用程序中被访问和使用。
    # app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///app.db'
    # app.config['SQLALCHEMY_TRACK_MODIFICATIONS'] = False
    app.config['SECRET_KEY'] = 'zfxxkj_2024_!@#'
    if myCongif.get_data("model_platform") == "acl":
        app.config['SESSION_TYPE'] = 'memcached'       # session类型
    elif myCongif.get_data("model_platform") =="cpu":
        app.config['SESSION_TYPE'] = 'redis'  # session类型
    #app.config['SESSION_FILE_DIR'] = './sessions'   # session保存路径
    #app.config['SESSION_MEMCACHED'] = base.Client(('localhost', 11211))
    app.config['SESSION_PERMANENT'] = True  # 如果设置为True，则关闭浏览器session就失效。
    app.config['SESSION_USE_SIGNER'] = False  # 是否对发送到浏览器上session的cookie值进行加密

    memcached_client = base.Client(('localhost', 11211))
    app.session_interface = MemcachedSessionInterface(memcached_client)
    Session(app)

    # 注册main
    app.register_blueprint(main)
    #注册API模块
    app.register_blueprint(api,url_prefix = '/api')
    return app


def login_required(f):
    @wraps(f)
    async def decorated_function(*args, **kwargs):
        if 'user' not in session:
            return redirect(url_for('main.login'))
        return await f(*args, **kwargs)
    return decorated_function