node-red-contrib-mysensors/src/lib/decoder/auto-decode.ts

Mysensors related nodes, for decoding / encoding mysensors serial protocol and MQTT topic, and wrapping arbitrary messages into mysensors compatible messages

import {
    IMysensorsMsg,
    INodeMessage,
    IStrongMysensorsMsg,
    MsgOrigin,
    MysensorsCommand,
    validateStrongMysensorsMsg,
} from '../mysensors-msg';
import { MysensorsMqtt } from './mysensors-mqtt';
import { MysensorsSerial } from './mysensors-serial';

export async function AutoDecode(
    msg: Readonly<IMysensorsMsg>
): Promise<IStrongMysensorsMsg<MysensorsCommand> | undefined> {
    if (validateStrongMysensorsMsg(msg)) {
        return {
            ...msg,
            origin: MsgOrigin.decoded,
        };
    }

    if (!msg.topic) {
        return new MysensorsSerial().decode(msg as INodeMessage);
    } else {
        return new MysensorsMqtt().decode(msg as INodeMessage);
    }
}