class ReminderService:
    # 提醒相关接口统一通过 service 聚合，便于后续切到任务调度或数据库实现。
    def list_reminders(self) -> dict:
        return {
            "total": 1,
            "page_no": 1,
            "page_size": 20,
            "list": [
                {
                    "reminder_id": 6001,
                    "title": "订单待审批",
                    "type": "order_approve",
                    "status": "pending",
                    "created_at": "2026-05-14 11:00:00",
                }
            ],
        }

    def read_reminder(self, reminder_id: int) -> dict:
        return {"reminder_id": reminder_id, "status": "read"}

    def check_arrears(self) -> dict:
        return {"checked": True}

    def check_inactive_customers(self) -> dict:
        return {"checked": True}


reminder_service = ReminderService()