New alert service

services/suppliers/app/api/suppliers.py

@@ -91,6 +91,65 @@ async def list_suppliers(
         raise HTTPException(status_code=500, detail="Failed to retrieve suppliers")
 
 
+@router.get(route_builder.build_base_route("batch"), response_model=List[SupplierSummary])
+async def get_suppliers_batch(
+    tenant_id: str = Path(..., description="Tenant ID"),
+    ids: str = Query(..., description="Comma-separated supplier IDs"),
+    db: AsyncSession = Depends(get_db)
+):
+    """
+    Get multiple suppliers in a single call for performance optimization.
+
+    This endpoint is designed to eliminate N+1 query patterns when fetching
+    supplier data for multiple purchase orders or other entities.
+
+    Args:
+        tenant_id: Tenant ID
+        ids: Comma-separated supplier IDs (e.g., "abc123,def456,xyz789")
+
+    Returns:
+        List of supplier summaries for the requested IDs
+    """
+    try:
+        service = SupplierService(db)
+
+        # Parse comma-separated IDs
+        supplier_ids = [id.strip() for id in ids.split(",") if id.strip()]
+
+        if not supplier_ids:
+            return []
+
+        if len(supplier_ids) > 100:
+            raise HTTPException(
+                status_code=400,
+                detail="Maximum 100 supplier IDs allowed per batch request"
+            )
+
+        # Convert to UUIDs
+        try:
+            uuid_ids = [UUID(id) for id in supplier_ids]
+        except ValueError as e:
+            raise HTTPException(status_code=400, detail=f"Invalid supplier ID format: {e}")
+
+        # Fetch suppliers
+        suppliers = await service.get_suppliers_batch(tenant_id=UUID(tenant_id), supplier_ids=uuid_ids)
+
+        logger.info(
+            "Batch retrieved suppliers",
+            tenant_id=tenant_id,
+            requested_count=len(supplier_ids),
+            found_count=len(suppliers)
+        )
+
+        return [SupplierSummary.from_orm(supplier) for supplier in suppliers]
+
+    except HTTPException:
+        raise
+    except Exception as e:
+        logger.error("Error batch retrieving suppliers", error=str(e), tenant_id=tenant_id)
+        raise HTTPException(status_code=500, detail="Failed to retrieve suppliers")
+
+
 @router.get(route_builder.build_resource_detail_route("", "supplier_id"), response_model=SupplierResponse)
 async def get_supplier(
     supplier_id: UUID = Path(..., description="Supplier ID"),