feat: sse && multi_merchant completed

stock/services.py

@@ -1,6 +1,7 @@
 from . import models
 from django.db.models import Sum
 from django.utils import timezone
+from sse.services import push_simple_message_with_object_id
 import logging
 
 
@@ -84,13 +85,10 @@ def make_stock_change_completed(stock_change_record: models.StockChangeRecord) -
             # 更新现有库存记录
             inventory_record.quantity += detail.quantity * positive
             inventory_record.num_of_rolls += positive
-            
             logger.info(
                 f'更新库存记录 {inventory_record.id}，新数量: {inventory_record.quantity}, '
                 f'新匹数: {inventory_record.num_of_rolls}'
             )
-
-            inventory_record.save()
         else:
             # 创建新库存记录
             inventory_record = models.Inventory(
@@ -100,11 +98,17 @@ def make_stock_change_completed(stock_change_record: models.StockChangeRecord) -
                 quantity=detail.quantity * positive,
                 num_of_rolls=1 if stock_change_record.is_incoming else -1,
             )
-            inventory_record.save()
             logger.info(
                 f'创建新库存记录 {inventory_record.id}，数量: {inventory_record.quantity}, '
                 f'匹数: {inventory_record.num_of_rolls}'
             )
+        inventory_record.save()
+        # 发送库存变动通知
+        push_simple_message_with_object_id(
+            event_type='stock_change',
+            message=f'产品ID {detail.product_id} 位于 {stock_change_record.warehouse_id} 的库存已更新',
+            object_id=inventory_record.id
+        )
 
         # 无论库存记录原本是否存在都创建库存快照
         create_stock_snapshot(detail, inventory_record)