Additional bugfixes

backend/app/routers/wwi.py

@@ -14,7 +14,7 @@ from sqlalchemy.orm import sessionmaker, Session
 from app.core.audit import ExportRecord, append_audit, current_span_context
 from app.core.config import settings
 from app.core.executor import get_executor
-from app.core.export import to_pdf_bytes
+from app.core.export import to_pdf_bytes, to_xlsx_bytes
 from app.core.security import FrontendPrincipal, require_frontend_principal
 from app.domain.wwi import analytics
 
@@ -379,6 +379,24 @@ async def export_wwi_business_events(
     data = await asyncio.get_running_loop().run_in_executor(
         get_executor(), lambda: analytics.get_business_events(pg_factory, limit=limit)
     )
+
+    if format == "xlsx":
+        today = datetime.now(timezone.utc).strftime("%Y%m%d")
+        filename = f"wwi_business_events_{today}.xlsx"
+        trace_id, span_id = current_span_context()
+
+        def _build_xlsx():
+            content = to_xlsx_bytes(data)
+            _record_export(pg_factory, "wwi", "business-events", "xlsx", filters,
+                           len(data), len(content), actor_id, trace_id, span_id)
+            return content
+
+        content = await asyncio.get_running_loop().run_in_executor(get_executor(), _build_xlsx)
+        return Response(
+            content=content, media_type=_XLSX_MEDIA,
+            headers={"Content-Disposition": f'attachment; filename="{filename}"'},
+        )
+
     return await asyncio.get_running_loop().run_in_executor(
         get_executor(),
         lambda: _make_pdf(data, "wwi_business_events",