feat: add entitlement plans and topic sessions

ai_knowledge_base_v2/apps/backend/app/api/user.py

@@ -1,15 +1,29 @@
 from __future__ import annotations
 
 from fastapi import APIRouter, Depends
+from sqlalchemy.orm import Session
 
+from app.core.database import get_db
 from app.core.dependencies import get_current_user
 from app.core.responses import api_success
 from app.models.user import User
 from app.schemas.user import UserProfile
+from app.services.entitlement_service import EntitlementService, entitlement_dict
+from app.services.topic_session_service import TopicSessionService
 
 router = APIRouter()
 
 
 @router.get("/profile")
-def profile(current_user: User = Depends(get_current_user)) -> dict:
-    return api_success(UserProfile.model_validate(current_user).model_dump(mode="json"))
+def profile(
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_user),
+) -> dict:
+    data = UserProfile.model_validate(current_user).model_dump(mode="json")
+    view = EntitlementService.active_entitlement(
+        db,
+        current_user,
+        monthly_topic_used=TopicSessionService.monthly_used_count(db, current_user.id),
+    )
+    data["entitlement"] = entitlement_dict(view)
+    return api_success(data)