/*********************************************************************
 *
 *  $Id: demo.js 58172 2023-11-30 17:10:23Z martinm $
 *
 *  An example that shows how to use a  Yocto-Light
 *
 *  You can find more information on our web site:
 *   Yocto-Light documentation:
 *      https://www.yoctopuce.com/EN/products/yocto-light/doc.html
 *   EcmaScript API Reference:
 *      https://www.yoctopuce.com/EN/doc/reference/yoctolib-ecmascript-EN.html
 *
 *********************************************************************/

"use strict";

require('yoctolib-es2017/yocto_api.js');
require('yoctolib-es2017/yocto_lightsensor.js');

let light;

async function startDemo()
{
    await YAPI.LogUnhandledPromiseRejections();
    await YAPI.DisableExceptions();

    // Setup the API to use the VirtualHub on local machine
    let errmsg = new YErrorMsg();
    if(await YAPI.RegisterHub('127.0.0.1', errmsg) != YAPI.SUCCESS) {
        console.log('Cannot contact VirtualHub on 127.0.0.1: '+errmsg.msg);
        return;
    }

    // Select specified device, or use first available one
    let serial = process.argv[process.argv.length-1];
    if(serial[8] != '-') {
        // by default use any connected module suitable for the demo
        let anysensor = YLightSensor.FirstLightSensor();
        if(anysensor) {
            let module = await anysensor.module();
            serial = await module.get_serialNumber();
        } else {
            console.log('No matching sensor connected, check cable !');
            return;
        }
    }
    console.log('Using device '+serial);
    light = YLightSensor.FindLightSensor(serial+".lightSensor");

    refresh();
}

async function refresh()
{
    if (await light.isOnline()) {
        console.log('Light measure : '+(await light.get_currentValue()) + (await light.get_unit()));
    } else {
        console.log('Module not connected');
    }
    setTimeout(refresh, 500);
}

startDemo();
