aggiungta SessionManager

backend/auth/session.py

@@ -6,8 +6,6 @@ import requests
 SPOTIFY_CLIENT_ID = os.getenv("SPOTIFY_CLIENT_ID")
 SPOTIFY_CLIENT_SECRET = os.getenv("SPOTIFY_CLIENT_SECRET")
 
-current_session = None
-
 class SessionData():
     __access_token: str
     __refresh_token: str
@@ -57,3 +55,28 @@ class SessionData():
         return self.__access_token
 
 
+class SessionManager():
+    __current_session: SessionData
+    __instance: "SessionManager"
+
+    def __new__(cls, *args, **kwargs):
+        if cls.__instance is None:
+            cls.__instance = super(SessionManager, cls).__new__(cls)
+        return cls.__instance
+    
+    def __init__(self):
+        self.__current_session = None
+
+    @classmethod
+    def instance(cls):
+        return cls.__instance
+    
+    def set_session(self, __current_session):
+        if self.__current_session is not None:
+            return
+        
+        self.__current_session = __current_session
+
+    def get_current_session(self):
+        return self.__current_session
+    

backend/endpoints/spotify_api.py

@@ -2,7 +2,7 @@ from fastapi import APIRouter, Request, Depends
 from fastapi.responses import RedirectResponse
 import requests
 import os
-from auth.session import SessionData, current_session
+from auth.session import SessionData, SessionManager, current_session
 
 music_router = APIRouter(prefix="/music")
 
@@ -42,8 +42,7 @@ def callback(code: str):
     expires_in = token_info.get("expires_in")
 
     # Salva access_token in sessione o database per usi futuri
-    if current_session is None:
-        current_session = SessionData(access_token, refresh_token, expires_in)
+    SessionManager.instance().set_session(SessionData(access_token, refresh_token, expires_in))
 
     return {}