feat: implement JWT authentication and token management in frontend and backend

application/auth.py

@@ -0,0 +1,39 @@
+import uuid
+
+from jose import jwt
+
+from application.core.settings import settings
+
+
+def handle_auth(request, data={}):
+    if settings.AUTH_TYPE == "simple_jwt":
+        jwt_token = request.headers.get("Authorization")
+        if not jwt_token:
+            return {"message": "Missing Authorization header"}
+
+        jwt_token = jwt_token.replace("Bearer ", "")
+
+        try:
+            decoded_token = jwt.decode(
+                jwt_token,
+                settings.JWT_SECRET_KEY,
+                algorithms=["HS256"],
+                options={"verify_exp": False},
+            )
+            return decoded_token
+        except Exception as e:
+            return {"message": f"Authentication error: {str(e)}"}
+    else:
+        return {"sub": "local"}
+
+
+def get_or_create_user_id():
+    try:
+        with open(settings.USER_ID_FILE, "r") as f:
+            user_id = f.read().strip()
+            return user_id
+    except FileNotFoundError:
+        user_id = str(uuid.uuid4())
+        with open(settings.USER_ID_FILE, "w") as f:
+            f.write(user_id)
+        return user_id