Create analytics.py

analytics.py

@@ -0,0 +1,41 @@
+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy.orm import Session
+from datetime import datetime
+from collections import defaultdict
+from typing import List, Dict
+from database import get_db
+from models import Favorite, Item
+from schemas import ItemAnalyticsResponse
+
+router = APIRouter()
+
+@router.get("/analytics/most-favorited", response_model=List[Dict])
+def get_most_favorited_items(db: Session = Depends(get_db)):
+    results = (
+        db.query(Favorite.item_id, Item.name, func.count(Favorite.id).label("count"))
+        .join(Item, Item.id == Favorite.item_id)
+        .group_by(Favorite.item_id, Item.name)
+        .order_by(func.count(Favorite.id).desc())
+        .limit(5)
+        .all()
+    )
+    return [{"item_id": r[0], "item_name": r[1], "favorites": r[2]} for r in results]
+
+
+@router.get("/analytics/active-hours", response_model=Dict[str, int])
+def get_active_hours(db: Session = Depends(get_db)):
+    hour_counts = defaultdict(int)
+    all_favorites = db.query(Favorite).all()
+    for fav in all_favorites:
+        hour = fav.created_at.strftime("%H:00")
+        hour_counts[hour] += 1
+    return dict(sorted(hour_counts.items()))
+
+
+@router.get("/analytics/trending-items", response_model=Dict[str, int])
+def get_trending_items(db: Session = Depends(get_db)):
+    item_counts = defaultdict(int)
+    for fav in db.query(Favorite).all():
+        day = fav.created_at.strftime("%Y-%m-%d")
+        item_counts[day] += 1
+    return dict(sorted(item_counts.items()))