fix: undo_repair_wechat_income 反向撤销重复记账

orders/utils.py

@@ -65,6 +65,29 @@ def update_daily_income(amount, club_id=None):
         )
 
 
+def subtract_daily_income(amount, club_id=None, stat_date=None):
+    """扣减指定日期的收入统计（repair 反向操作用）。"""
+    from jituan.constants import CLUB_ID_DEFAULT
+
+    cid = club_id or CLUB_ID_DEFAULT
+    target = stat_date or date.today()
+
+    with transaction.atomic():
+        stat = DailyIncomeStat.objects.select_for_update().filter(
+            date=target, club_id=cid,
+        ).first()
+        if not stat:
+            return
+        jine = Decimal(str(amount))
+        zero = Decimal('0.00')
+        new_amt = max(zero, Decimal(str(stat.total_amount or 0)) - jine)
+        new_cnt = max(0, int(stat.total_count or 0) - 1)
+        stat.total_amount = new_amt
+        stat.total_count = new_cnt
+        stat.save(update_fields=['total_amount', 'total_count'])
+        logger.info(f"每日收入扣减[{cid}]: {target}, -{amount}元")
+
+
 def update_daily_payout(amount, club_id=None):
     """
     原子更新当日出款统计（金额累加，笔数加1）。