init

transport/backend/app/services/event_detector.py

@@ -0,0 +1,55 @@
+from datetime import datetime, timedelta
+from typing import Optional
+from sqlalchemy.ext.asyncio import AsyncSession
+
+from app.models import Vehicle, Position, Event
+from app.config import settings
+
+
+async def detect_events(
+    db: AsyncSession,
+    vehicle: Vehicle,
+    current: Position,
+    previous: Optional[Position]
+) -> list[Event]:
+    """Обнаружение событий на основе новой позиции"""
+    events = []
+
+    # Check for overspeed
+    if current.speed > settings.overspeed_limit:
+        event = Event(
+            vehicle_id=vehicle.id,
+            timestamp=current.timestamp,
+            type="OVERSPEED",
+            payload={
+                "speed": current.speed,
+                "limit": settings.overspeed_limit,
+                "lat": current.lat,
+                "lon": current.lon
+            }
+        )
+        db.add(event)
+        await db.commit()
+        await db.refresh(event)
+        events.append(event)
+
+    # Check for long stop (if speed is 0 and was 0 for a while)
+    if previous and current.speed < 2 and previous.speed < 2:
+        time_diff = current.timestamp - previous.timestamp
+        if time_diff >= timedelta(minutes=settings.long_stop_minutes):
+            event = Event(
+                vehicle_id=vehicle.id,
+                timestamp=current.timestamp,
+                type="LONG_STOP",
+                payload={
+                    "duration_minutes": time_diff.total_seconds() / 60,
+                    "lat": current.lat,
+                    "lon": current.lon
+                }
+            )
+            db.add(event)
+            await db.commit()
+            await db.refresh(event)
+            events.append(event)
+
+    return events