Add stats

backend/app/routers/stats.py

@@ -4,7 +4,7 @@ from fastapi import APIRouter, Depends, Query
 from sqlmodel.ext.asyncio.session import AsyncSession
 from app.database import get_session
 from app.crud import get_sessions
-from app.schemas import DailySummaryResponse, TimetableResponse, WakeupBedtimeResponse
+from app.schemas import DailySummaryResponse, TimetableResponse, WakeupBedtimeResponse, SummaryResponse
 from app.utils.time_utils import get_day_night_splits
 
 router = APIRouter(prefix="/api/stats", tags=["stats"])
@@ -100,6 +100,24 @@ async def get_timetable(
     return {"slots": slots}
 
 
+@router.get("/summary", response_model=SummaryResponse)
+async def get_summary(
+    from_date: datetime,
+    to_date: datetime,
+    session: AsyncSession = Depends(get_session),
+):
+    sessions, _ = await get_sessions(session, from_date=from_date, to_date=to_date)
+    total_sleeps = len(sessions)
+    
+    num_days = (to_date.date() - from_date.date()).days + 1
+    avg_sleeps_per_day = total_sleeps / num_days if num_days > 0 else 0.0
+    
+    return {
+        "total_sleeps": total_sleeps,
+        "avg_sleeps_per_day": avg_sleeps_per_day,
+    }
+
+
 @router.get("/wake-sleep-times", response_model=WakeupBedtimeResponse)
 async def get_wake_sleep_times(
     from_date: datetime,