read csv-data and put it in an array

Perlchamp

that’s not what i wanted (writing code for me). my big problem is, not to know how i can start, how i can test code-snippets and so on …
i read some articles, but when i want to test some lines of code, i don’t know what to do. in my magicmirror module i can’t do that => error messages … i hope that i have expressed myself clearly and understandably …
if i have a code-snoppet, go to terminal and put in

node xxx.js

path not found, module not found, and many other error messages … maybe i soon despair …

sdetweil

@Perlchamp is the xxx.js in the current folder? if not u need to give path to the file

you can do in MM module, with messages… there are two parts… the server side (node_helper) whose messages (console.log) come out on the same terminal window
the browser side (modulename.js) uses Log.log. and displays only in the developer window

I have modified a logging module that will display them together on the terminal window

https://github.com/sdetweil/MMM-Logging
install this as the FIRST module in the list
use this definition in config.js

		{
            module: 'MMM-Logging',
            disabled: false,
            config: {
                // Module functions out of the box with nothing set here.
                // See below for configurable options.
                echoLocal: true, 
                echoRemote: true,
                overwriteBrowserMethods: true,
                format: "{{message}} ({{folder}}/{{file}}:{{line}} {{method}})",
            }
        },

Perlchamp

thanks a lot, i will try to “play” with it. can take some time …

sdetweil

@Perlchamp ok, if you are trying to use the csv-> somethign libraries and installed them in you module folder, then u want to be IN that folder to run your sample node xxx.js tests so the module folder path is right for require()

Perlchamp

@sdetweil said in read csv-data and put it in an array:

u want to be IN that folder

you mean in my module folder? it’s called “MMM-birthdaylist” …

sdetweil

@Perlchamp correct

cd ~/MagicMirror/modules/MMM-birthdaylist
node xxx.js

note xxx.js can’t do anything specifically MagicMirror related no module register no sendSocketNotification

Perlchamp

ok, thanks a lot sam :-)
no i will try to play with it.

Perlchamp

Log.log("hello Log");

=> Log.log(“hello Log”);
^

ReferenceError: Log is not defined
at Object. (/home/thomas/MagicMirror/modules/MMM-birthdaylist/test.js:1:1)
at Module._compile (internal/modules/cjs/loader.js:778:30)
at Object.Module._extensions…js (internal/modules/cjs/loader.js:789:10)
at Module.load (internal/modules/cjs/loader.js:653:32)
at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
at Function.Module._load (internal/modules/cjs/loader.js:585:3)
at Function.Module.runMain (internal/modules/cjs/loader.js:831:12)
at startup (internal/bootstrap/node.js:283:19)
at bootstrapNodeJSCore (internal/bootstrap/node.js:623:3)

console.log("hello console");

=> hello console

Perlchamp

another question:
what can i do with MMM-logging. if i start npm start in the MagicMirror folder nothing will displayed. and to test, etc. i have to close MagicMirror because it fill the hole screen …

sdetweil

@Perlchamp log.log only works in the modulename.js (the part loaded in the browser)
we call it that cause its filename matches the module name

Perlchamp

ok, thanks again :-)

sdetweil

@Perlchamp u can redirect the output of npm start to a file, npm start >somefile

u can minimize the window with alt-spacebar, n

u can open the developers window ( for the modulename,js debugging) npm start dev
or if mirror already running use f12 or ctrl-shift-i on the keyboard

I debug from my PC, ssh connected to pi, or I run MM on my PC… and debug there

Perlchamp

what do you use for debugging on pc ?
do you have x64 or arm-based pc ?

sdetweil

@Perlchamp x64, run linux or windows (today on linux), doesn’t matter… same debug process… look at console or browser window
if I need to debug modulename.js on pi, I open browser from PC to the mirror URL and do it there

Perlchamp

AND:
thanks a lot for YOUR time. i hope it will not been wasted … i will working hard to get some results …

Perlchamp

@sdetweil said in read csv-data and put it in an array:

I open browser from PC to the mirror URL and do it there
I debug from my PC, ssh connected to pi, or I run MM on my PC… and debug there

how ?

sdetweil

@Perlchamp on MagicMirror, in config, set address:“0.0.0.0”,
And ipWhitelist:[],

Then u can connect to the mm url from anywhere in your house/office.
http://ipaddress:port

Then f12 or ctrl-shift-i on the browser keyboard to open the developers window.

Perlchamp

ok thank.
if i want to test

    readCSV: fs.readFile('birthdaylist.csv', 'utf8', function (err, data) {
	var dataArray = data.split(/\r?\n/);
	Log.log(dataArray);

or

readList: function() {
	var JFile=require('jfile');
	var myF=new JFile("MMM-birthday.txt");
	myF.lines // ["first line","second line"]

i have to do this in node_helper right? and first i have to require them and of course to install them … something i forgot ?

sdetweil

@Perlchamp Log.log is ONLY in the browser, but fs. Is not usable in browser

U can test it w node to make sure it works. Then for mm it has to be in node_helper

Install library, so that you CAN require

Perlchamp

hallo sam :-)
i have now this in my node_helper.js:

var NodeHelper = require("node_helper");

// add require of other javascripot components here
// var xxx = require('yyy'); here
const csv = require("csvtojson");
const csvFilePath = this.path + 'birthdaylist.csv';


module.exports = NodeHelper.create({

	init(){
		console.log("init module helper perlchamp");
	},

	start() {
		console.log("Starting module helper: ${this.name}");
		console.log("dieser Pfad: ${this.path}");
		
		csv()
		.fromFile(csvFilePath)
		.then((jsonObj)=>{
			console.log(jsonObj);
		})

	},

/*
	stop(){
		console.log(`Stopping module helper: ${this.name}`);
	},
*/
	// handle messages from our module// each notification indicates a different messages
	// payload is a data structure that is different per message.. up to you to design this
	socketNotificationReceived(notification, payload) {
		console.log(this.name + " received a socket notification: " + notification + " - Payload: " + payload);
		// if config message from module
		if (notification === "CONFIG") {
			// save payload config info
			this.config=payload
			// wait 15 seconds, send a message back to module
			setTimeout(()=> { this.sendSocketNotification("message_from_helper"," this is a test_message")}, 15000)
		}
		else if(notification === "????2") {
		}

	},

});

terminal says:

Unhandled rejection Error: File does not exist. Check to make sure the file path to your csv is correct.
    at /home/dirk/MagicMirror/node_modules/csvtojson/v2/Converter.js:81:37
    at suppressedCallback (fs.js:209:5)
    at FSReqCallback.oncomplete (fs.js:153:23)

it’s from your SampleModule …

how can i see the console.log statements in the browser, starting MM ?
did i enter the code in the right place?
if I enter the following into the terminal window:
node console.log (‘path: $ {this.path}’)
i got an error message:
bash: Syntaxerror unexpected word `(’
what am I doing wrong ?

many thanks in advance