const messageId = "mdl_" + Date.now();
const timestamp = Date.now();
//nameSpace：命名空间，需要改改为正确的命名空间代码
const nameSpace = "Environment"
const clientCode = "Data-It_XzOffice";
//此处需改为正确的设备实体唯一ID
const deviceId = "sensor.miaomiaoc_cn_blt_3_11a1sbr5k5o01_t2_temperature_p_2_1";
const deviceType = "sensor";

// 按照胜透物联网通信协议生成物模型定义
const modelMessage = {
    "messageId": messageId,
    "timestamp": timestamp,
    "clientCode": clientCode,
    "deviceId": deviceId,
    "deviceType": deviceType,
    "version": "1.0",
    "data": {
        "model": {
            "deviceInfo": {
                "manufacturer": "小米",
                "model": "MIAOMIAOC_CN_BLT_3_11A1SBR5K5O01_T2",
                "version": "1.0.0",
                "description": "米家温湿度传感器(通过HomeAssistant集成)"
            },
            "properties": {
                "temperature": {
                    "dataType": "float",
                    "unit": "°C",
                    "range": {
                        "min": -40,
                        "max": 85
                    },
                    "precision": 1,
                    "description": "环境温度"
                }
            },
            "events": {
                "startup": {
                    "eventType": "info",
                    "description": "设备启动事件"
                }
            },
            "alarms": {
                "TEMP_HIGH": {
                    "alarmType": "threshold_exceeded",
                    "description": "温度过高报警",
                    "defaultThreshold": 35.0
                },
                "TEMP_LOW": {
                    "alarmType": "threshold_exceeded",
                    "description": "温度过低报警",
                    "defaultThreshold": 0.0
                }
            }
        }
    }
};

// 设置MQTT发布主题
msg.topic = `${nameSpace}/${deviceType}/${deviceId}/model`;
msg.payload = JSON.stringify(modelMessage);
msg.qos = 1;

node.log("设备物模型数据已生成，发布到主题: " + msg.topic);

return msg;