Config modules from external file (JSON)

telmini

Hi.

I want to define my modules [] in a separate JSON file and then have config.js read from that file and populate it.

Is it possible? something like this

var config = 
{
  address: "0.0.0.0",
  electronOptions: {},
  ipWhitelist: [],
  language: "pt",
  modules: loadJSON("configuration.json"),
  paths: {
    modules: "modules",
    vendor: "vendor"
  },
  useHttps: false,
  httpsPrivateKey: "",
  httpsCertificate: ""
};

function loadJSON(filePath){
   try {
        var fs = require('fs');
        var path = require('path');
        var filename = path.resolve(__dirname, filePath);
        var jsonFile = JSON.parse(fs.readFileSync(filename));
        return jsonFile;
      } catch (e) {
         console.error(e);
          return [];
      }  
}

Thank you

sdetweil

@telmini the browser side also reads config.js but cannot use file (fs.) operations due to browser security

if u can read files u can read ANY files

telmini

So, I tried this, as seen on another example in this thread

config.js:

var config =
{
  address: "0.0.0.0",
  electronOptions: {},
  ipWhitelist: [],
  language: "pt",
  logLevel: ["LOG", "WARN", "ERROR", "DEBUG"],
  modules: loadJSON("./modules.json"),
  paths: {
    modules: "modules",
    vendor: "vendor"
  },
  useHttps: false,
  httpsPrivateKey: "",
  httpsCertificate: ""
};


function loadJSON(filePath){
  if (typeof module !== "undefined") {
        return require(filePath);
    } else {
    var XMLHttpRequest = require("xmlhttprequest").XMLHttpRequest;
    var xhr = new XMLHttpRequest();
		xhr.overrideMimeType("application/json");
		xhr.open("GET", filePath, true);
		xhr.onreadystatechange = function () {
			if (xhr.readyState === 4 && xhr.status === 200) {
				// needs error handler try/catch at least
				let fileinfo = null;
				try {
					fileinfo = JSON.parse(xhr.responseText);
				} catch (exception) {
					// nothing here, but don't die
					Log.error(" loading json file =" + file + " failed");
				}
				return fileinfo;
			}
		};
		xhr.send(null);
  }
}

modules.json

[{
      "module": "currentweather",
      "position": "top_left",
      "config": {
        "location": "Lisboa",
        "locationID": "2267057",
        "appid": "314d9c29c18fd11e79034c56e1348f4c",
        "iconTable": {
          "01d": "wi-day-sunny",
          "02d": "wi-day-cloudy",
          "03d": "wi-cloudy",
          "04d": "wi-cloudy-windy",
          "09d": "wi-showers",
          "10d": "wi-rain",
          "11d": "wi-thunderstorm",
          "13d": "wi-snow",
          "50d": "wi-fog",
          "01n": "wi-night-clear",
          "02n": "wi-night-cloudy",
          "03n": "wi-night-cloudy",
          "04n": "wi-night-cloudy",
          "09n": "wi-night-showers",
          "10n": "wi-night-rain",
          "11n": "wi-night-thunderstorm",
          "13n": "wi-night-snow",
          "50n": "wi-night-alt-cloudy-windy"
        }
      }
  }]

And this is the output:
![0_1611766820659_output.png](Uploading 100%)

output

telmini

So, it can detect that the json file has the “currentweather” module, but then fails to load it properly.

Any help?

sdetweil

@telmini u have a bad path

/js/ /modules

note modules is off the mm root just like js

/modules/modulename
/js/mm_core_filename.js

telmini

@telmini said in Config modules from external file (JSON):

loadJSON("./modules.json")

But that bug/crash is inside Magic Mirror code. Or is related to the path defined here “loadJSON(”./modules.json")"?

sdetweil

@telmini i do not know, screen is hard to read. got enoent file not found. path is wrong.

telmini

Sorry, this is the output.

> magicmirror@2.11.0 start /home/pi/MagicMirror
> DISPLAY="${DISPLAY:=:0}" ./node_modules/.bin/electron js/electron.js

[2021-01-27 16:55:09.858] [LOG]    Starting MagicMirror: v2.11.0
[2021-01-27 16:55:09.878] [LOG]    Loading config ...
[2021-01-27 16:55:09.892] [LOG]    Loading module helpers ...
[2021-01-27 16:55:09.896] [LOG]    Error: ENOENT: no such file or directory, access '/home/pi/MagicMirror/js/../modules/default/currentweather/node_helper.js'
    at Object.accessSync (fs.js:202:3)
    at Object.fs.accessSync (electron/js2c/asar.js:491:38)
    at Object.fs.accessSync (electron/js2c/asar.js:491:38)
    at loadModule (/home/pi/MagicMirror/js/app.js:124:7)
    at loadNextModule (/home/pi/MagicMirror/js/app.js:166:5)
    at loadModules (/home/pi/MagicMirror/js/app.js:177:3)
    at /home/pi/MagicMirror/js/app.js:223:4
    at loadConfig (/home/pi/MagicMirror/js/app.js:72:4)
    at App.start (/home/pi/MagicMirror/js/app.js:211:3)
    at Object.<anonymous> (/home/pi/MagicMirror/js/electron.js:115:7) {
  errno: -2,
  syscall: 'access',
  code: 'ENOENT',
  path: '/home/pi/MagicMirror/js/../modules/default/currentweather/node_helper.js'
}
[2021-01-27 16:55:09.924] [LOG]    No helper found for module: currentweather.
[2021-01-27 16:55:09.926] [LOG]    All module helpers loaded.
[2021-01-27 16:55:10.246] [LOG]    Starting server on port 8080 ... 
[2021-01-27 16:55:10.256] [INFO]   You're using a full whitelist configuration to allow for all IPs
[2021-01-27 16:55:10.268] [LOG]    Server started ...
[2021-01-27 16:55:10.268] [LOG]    Sockets connected & modules started ...
[2021-01-27 16:55:10.428] [LOG]    Launching application.
^[$

I don’t understand why it’s trying to go to this path

Error: ENOENT: no such file or directory, access’/home/pi/MagicMirror/js/…/modules/default/currentweather/node_helper.js’

sdetweil

@telmini because its looking for the (optional) node_helper.js of a module.
this one, currentweather doesnt use one

sdetweil

@telmini so the returncode is right but its not fatal in mm view.