feat: added wecom notify when printing_job production was completed(new status) and shipment was created

printing/handlers.py

@@ -253,8 +253,8 @@ def on_printing_order_created(sender, **kwargs):
     - 消息字段（中文）：
       - 印染订单ID / human_id
       - 创建时间
-      - 发送者（优先 created_by.employee.name / created_by.username）
-      - 客户、面料、出货日期（可选字段，缺省展示为 '-'）
+    - 发送者（优先 created_by.employee.name / created_by.username）
+    - 客户、面料、出货日期（可选字段，缺省展示为 '-'）
     """
     # 测试环境默认关闭，避免单测出网/刷屏
     if not getattr(settings, "PRINTING_ORDER_CREATED_WECOM_NOTIFY_ENABLED", True):
@@ -336,3 +336,44 @@ def on_printing_order_created(sender, **kwargs):
 
     # 在事务提交后再发送，避免事务回滚但通知已发出
     transaction.on_commit(_send_wecom)
+
+
+def on_printing_job_production_completed(sender, **kwargs):
+    """
+    PrintingJob 被显式标记为完成生产后的处理。
+
+    当前通过 Celery task 异步发送企业微信通知，避免阻塞主流程。
+    """
+    if not getattr(settings, "PRINTING_JOB_PRODUCTION_COMPLETED_WECOM_NOTIFY_ENABLED", True):
+        return
+    if getattr(settings, "TESTING", False):
+        return
+
+    job = kwargs.get("instance")
+    triggered_by = kwargs.get("triggered_by")
+    if job is None:
+        logger.warning(
+            "[printing.handlers] printing_job_production_completed 信号缺少 instance，跳过通知"
+        )
+        return
+
+    logger.info(
+        "[printing.handlers] 收到 printing_job_production_completed 信号: sender=%s, job_id=%s",
+        sender,
+        getattr(job, "id", None),
+    )
+
+    def _enqueue_task():
+        try:
+            from printing.tasks import notify_printing_job_production_completed_wecom
+
+            notify_printing_job_production_completed_wecom.delay(
+                printing_job_id=job.id,
+                triggered_by_id=getattr(triggered_by, "id", None),
+            )
+        except Exception:
+            logger.exception(
+                "[printing.handlers] 投递 notify_printing_job_production_completed_wecom task 失败（已忽略，不影响主流程）"
+            )
+
+    transaction.on_commit(_enqueue_task)