1、缺少支付幂等性保障

2、增加事务
3、增加金额一致性判断
4、增加后台退款功能

video-gen-api/app/api/v1/admin.py

@@ -43,6 +43,7 @@ from app.services.notification import create_notification
 from app.services.auth import hash_password, verify_password
 from app.services.operation_log import log_operation
 from app.services.resource_signed_url_service import build_resource_signed_url
+from app.services.payment import sync_pending_orders, process_refund
 
 from app.services.generation_billing_service import (
     OWNER_GENERATION_RECORD,
@@ -457,6 +458,7 @@ async def get_payment_stats(
         "pending": {"count": 0, "amount": 0.0},
         "paid": {"count": 0, "amount": 0.0},
         "cancelled": {"count": 0, "amount": 0.0},
+        "refunded": {"count": 0, "amount": 0.0},
     }
 
     # Parse dates and build base query filters
@@ -570,7 +572,7 @@ async def get_payment_stats(
                 "amount": round(o.amount, 2),
                 "credits": round(o.credits, 2),
                 "payment_method": o.payment_method,
-                "status": o.status if o.status in ("pending", "paid", "cancelled") else "cancelled",
+                "status": o.status if o.status in ("pending", "paid", "cancelled", "refunded") else "cancelled",
                 "trade_no": o.trade_no,
                 "paid_at": _iso(o.paid_at),
                 "created_at": _iso(o.created_at),
@@ -622,7 +624,7 @@ async def get_admin_payment_orders(
                 "amount": round(o.amount, 2),
                 "credits": round(o.credits, 2),
                 "payment_method": o.payment_method,
-                "status": o.status if o.status in ("pending", "paid", "cancelled") else "cancelled",
+                "status": o.status if o.status in ("pending", "paid", "cancelled", "refunded") else "cancelled",
                 "trade_no": o.trade_no,
                 "paid_at": _iso(o.paid_at),
                 "created_at": _iso(o.created_at),
@@ -660,6 +662,19 @@ async def update_payment_config(
     }
 
 
+@router.post("/payment-orders/{order_no}/refund")
+async def refund_payment_order(
+    order_no: str,
+    admin: User = Depends(get_admin_user),
+    db: AsyncSession = Depends(get_db),
+):
+    """Refund a paid payment order."""
+    result = await process_refund(db, order_no)
+    if not result.get("success"):
+        raise HTTPException(status_code=400, detail=result.get("message", "退款失败"))
+    return result
+
+
 # ── Industry Config ──────────────────────────────────────
 
 def _serialize_industry(ind: IndustryConfig) -> dict: