Error Node_helper custome Module

[Chiiki58]

Hey Guys i’m trying to set up a custome Module to screen the menu of my scools canteen. I ask ChatGPT for the Scripts but he can’t help me anymore thats the reason why i write here.

The module is called MenuZFV and has a .js file as well as .css and also a node_helper.js which I paste below. The problem is the data can be accessed from the website: (‘https://app.food2050.ch/de/stfw/restaurant -stfw/menu/mittagsmenue/weekly?week=26’) cannot be accessed. Npm install in the folder was done. ChatGPT recommended puppeteer to me because there is no DOM on the website, I installed it via npm install, but when I run node node_helper.js this log comes up - can anyone help me?

LOG:

node:internal/modules/cjs/loader:1051
  throw err;
  ^

Error: Cannot find module 'node_helper'
Require stack:
- /home/pi/MagicMirror/modules/MMM-MenuZFV/node_helper.js
    at Module._resolveFilename (node:internal/modules/cjs/loader:1048:15)
    at Module._load (node:internal/modules/cjs/loader:901:27)
    at Module.require (node:internal/modules/cjs/loader:1115:19)
    at require (node:internal/modules/helpers:130:18)
    at Object.<anonymous> (/home/pi/MagicMirror/modules/MMM-MenuZFV/node_helper.js:1:20)
    at Module._compile (node:internal/modules/cjs/loader:1241:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1295:10)
    at Module.load (node:internal/modules/cjs/loader:1091:32)
    at Module._load (node:internal/modules/cjs/loader:938:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:83:12) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [ '/home/pi/MagicMirror/modules/MMM-MenuZFV/node_helper.js' ]
}

Node.js v20.8.0

.JS:

const puppeteer = require('puppeteer');

(async () => {
  const browser = await puppeteer.launch({ headless: true });
  const page = await browser.newPage();
  const url = 'https://app.food2050.ch/de/stfw/restaurant-stfw/menu/mittagsmenue/weekly?week=26';

  try {
    await page.goto(url, { waitUntil: 'networkidle2' });

    const menuItems = await page.evaluate(() => {
      const items = [];
      document.querySelectorAll('p.sc-e418db57-3.eOyIUO').forEach(item => {
        items.push(item.textContent.trim());
      });
      return items;
    });

    console.log('Menu Items:');
    console.log(menuItems);

  } catch (error) {
    console.error('Error fetching menu:', error);
  } finally {
    await browser.close();
  }
})();

.CSS:

.MMM-MenuZFV .day {
    font-weight: bold;
    padding-top: 10px;
}

.MMM-MenuZFV .menu-name {
    text-align: left;
}

.MMM-MenuZFV .menu-price {
    text-align: right;
}

NODE_HELPER.JS:

const NodeHelper = require('node_helper');
const puppeteer = require('puppeteer');

module.exports = NodeHelper.create({
  start: function () {
    console.log('Starting node helper for: ' + this.name);
  },

  socketNotificationReceived: function (notification, payload) {
    if (notification === 'GET_MENU') {
      console.log('Fetching menu from URL: ' + payload.url); // Log the URL being fetched
      this.getMenu(payload.url); // Pass the URL from payload
    }
  },

  getMenu: async function (url) {
    try {
      const browser = await puppeteer.launch({ headless: true });
      const page = await browser.newPage();
      await page.goto(url, { waitUntil: 'networkidle2' });

      const menuItems = await page.evaluate(() => {
        const items = [];
        document.querySelectorAll('p.sc-e418db57-3.eOyIUO').forEach(item => {
          items.push(item.textContent.trim());
        });
        return items;
      });

      await browser.close();

      console.log('Extracted menu items:');
      console.log(menuItems);

      if (menuItems.length === 0) {
        menuItems.push('Kein Menü gefunden.');
      }

      this.sendSocketNotification('MENU_RESULT', menuItems);
    } catch (error) {
      console.error('Error fetching menu:', error);
      this.sendSocketNotification('MENU_RESULT', ['Fehler beim Abrufen des Menüs.']);
    }
  }
});

Thank you very much for your time and help.

[sdetweil]

@Chiiki58 where are you building this module?? are the files located in a folder off the MagicMirror/modules folder??

we create alias entries to the includes for some things…

so your files have to be in the right place…

pupetteer is really about executing a web page, clicking, scrolling

you shouldn’t need that I don’t think…

cheerio will let you extract parts of the page and
https://www.npmjs.com/package/cheerio
https://www.npmjs.com/package/html-to-json-parser
html_to_json to convert them to json

also, see my sampleModule that has working node_helper.js
https://github.com/sdetweil/SampleModule

also, names matter… MagicMirror is case sensitive

and the link to the doc for module creators
https://docs.magicmirror.builders/development/introduction.html

[sdetweil]

@Chiiki58 also note the required files

module_name(in config.js) = folder_name = filename.js = register inside this file
all MUST MATCH exactly

your .js doesn’t have the register

css file name has to match the return from

getStyles: function

[Chiiki58]

@sdetweil Yeah of course I have everything in the right folder with the right name

I also had cheerio installed, I’ll have to check it out

I’ll try it with httptojson

Thank you very much, Sam

[Chiiki58]

It works, thank you very much for the input. I’ll probably upload it to GIT once I get the layout right. Now I’ve just unstructured all the text from the website

[sdetweil]

@Chiiki58 awesome, glad you’re making progress.