feat: improve bgp incident visibility

backend/app/api/v1/bgp.py

@@ -86,6 +86,28 @@ async def list_bgp_events(
     }
 
 
+@router.get("/events/summary")
+async def get_bgp_event_summary(
+    current_user: User = Depends(get_current_user),
+    db: AsyncSession = Depends(get_db),
+):
+    result = await db.execute(select(BGPObservation).where(BGPObservation.source.in_(BGP_SOURCES)))
+    records = result.scalars().all()
+
+    collectors = sorted({record.collector for record in records if record.collector})
+    prefixes = sorted({record.prefix for record in records if record.prefix})
+    by_type: dict[str, int] = {}
+    for record in records:
+        by_type[record.event_type] = by_type.get(record.event_type, 0) + 1
+
+    return {
+        "total": len(records),
+        "collector_count": len(collectors),
+        "prefix_count": len(prefixes),
+        "by_type": by_type,
+    }
+
+
 @router.get("/events/{event_id}")
 async def get_bgp_event(
     event_id: int,
@@ -211,6 +233,36 @@ async def list_bgp_incidents(
     }
 
 
+@router.get("/incidents/summary")
+async def get_bgp_incident_summary(
+    current_user: User = Depends(get_current_user),
+    db: AsyncSession = Depends(get_db),
+):
+    total_result = await db.execute(select(func.count(BGPIncident.id)))
+    type_result = await db.execute(
+        select(BGPIncident.incident_type, func.count(BGPIncident.id))
+        .group_by(BGPIncident.incident_type)
+        .order_by(func.count(BGPIncident.id).desc())
+    )
+    severity_result = await db.execute(
+        select(BGPIncident.severity, func.count(BGPIncident.id))
+        .group_by(BGPIncident.severity)
+        .order_by(func.count(BGPIncident.id).desc())
+    )
+    status_result = await db.execute(
+        select(BGPIncident.status, func.count(BGPIncident.id))
+        .group_by(BGPIncident.status)
+        .order_by(func.count(BGPIncident.id).desc())
+    )
+
+    return {
+        "total": total_result.scalar() or 0,
+        "by_type": {row[0]: row[1] for row in type_result.fetchall()},
+        "by_severity": {row[0]: row[1] for row in severity_result.fetchall()},
+        "by_status": {row[0]: row[1] for row in status_result.fetchall()},
+    }
+
+
 @router.get("/incidents/{incident_id}")
 async def get_bgp_incident(
     incident_id: int,