增加接单接口

app/api/endpoints/order.py

@@ -327,4 +327,41 @@ async def get_delivery_orders(
     return success_response(data={
         "total": total,
         "items": [OrderInfo.model_validate(o) for o in orders]
-    }) 
+    }) 
+
+@router.post("/{orderid}/accept", response_model=ResponseModel)
+async def accept_order(
+    orderid: str,
+    db: Session = Depends(get_db),
+    deliveryman: UserDB = Depends(get_deliveryman_user)
+):
+    """接单（仅配送员可用）"""
+    # 查询订单
+    order = db.query(ShippingOrderDB).filter(
+        ShippingOrderDB.orderid == orderid
+    ).first()
+    
+    if not order:
+        return error_response(code=404, message="订单不存在")
+    
+    # 检查订单状态
+    if order.status != OrderStatus.CREATED:
+        return error_response(code=400, message="只能接待新创建的订单")
+    
+    # 检查订单是否已被接单
+    if order.deliveryman_user_id is not None:
+        return error_response(code=400, message="订单已被其他配送员接单")
+    
+    try:
+        # 更新订单状态和配送员ID
+        order.status = OrderStatus.ACCEPTED
+        order.deliveryman_user_id = deliveryman.userid
+        
+        db.commit()
+        return success_response(
+            message="接单成功",
+            data=OrderInfo.model_validate(order)
+        )
+    except Exception as e:
+        db.rollback()
+        return error_response(code=500, message=f"接单失败: {str(e)}") 

app/models/order.py

@@ -38,6 +38,7 @@ class ShippingOrderDB(Base):
         nullable=False, 
         default=DeliveryMethod.DELIVERY_AT_DOORSTEP
     )
+    deliveryman_user_id = Column(Integer, ForeignKey("users.userid"), nullable=True)
 
 class ShippingOrderPackageDB(Base):
     __tablename__ = "shipping_order_packages"
@@ -79,6 +80,7 @@ class OrderInfo(BaseModel):
     complete_images: Optional[List[str]] = None
     create_time: datetime
     delivery_method: DeliveryMethod
+    deliveryman_user_id: Optional[int] = None
     
     def __init__(self, **data):
         super().__init__(**data)