Requesting assistance with GroceryApp module

[CurlyQ12391]

Hello!

I am still pretty new to MagicMirror and coding, but decided it’d be worth it to attempt to build a custom module since I couldn’t find exactly what I was looking for elsewhere. Which brings me to MMM-GroceryApp; which has been built (to the best of my ability) using Kroger Developer documentation.

I am at the point where I have the main module config.js, node_helper_js, authorize,js, and the CSS file functioning in a way that doesn’t break the MagicMirror. Unfortunately, thats all that is happening - I can’t see this module at all when MagicMirror runs, the location I put it remains blank. So obviously I am missing something, and because of that I can’t login to authorize the application.

I changed my repository to public so the code can be viewed there, but I will also post the main and node_helper code below. My MagicMirror config.js for this module is pretty basic:

{
  module: "MMM-GroceryApp",
  position: "bottom_right" 
},

NOTE: The app is set to be on the bottom_right of my 3rd page.

MMM-Kroger.js

Module.register("MMM-GroceryApp", {
	defaults: {
		refreshInterval: 1000 * 60 * 5, // refresh every 5 minutes
		updateInterval: 1000 * 60 * 5 // update every 5 minutes
	},

	requiresVersion: "2.1.0", // Required version of MagicMirror

	start: function() {
		var self = this;
		Log.info("Starting module: " + this.name);

		//Flag for check if module is loaded
		this.loaded = false;

		this.sendSocketNotification("CONFIG", this.config);
	},

	getStyles: function () {
		return [
			"MMM-GroceryApp.css"
		];
	},

	getScripts: function () {
		return [
			"moment.js"
		];
	},

  getStats: function () {
    this.sendSocketNotification("UPDATE", this.config);
  },

	processData: function(data) {
		var self = this;
		this.dataRequest = data;
		if (this.loaded === false) { self.updateDom(self.config.animationSpeed) ; }
		this.loaded = true;

		// the data if load
		// send notification to node_helper.js
		this.sendSocketNotification("MMM-GroceryApp-NOTIFICATION_TEST", data);
	},

	// socketNotificationReceived from node_helper.js
 	socketNotificationReceived: function(notification, payload) {
		 console.log("socketNotificationReceived");
		if (notification === "STARTED") {
			this.updateDom();
		}
		else if (notification === "CART_DATA") {
			this.loaded = true;
			this.processChargeData(JSON.parse(payload).response);
			this.updateDom();
		}
		else if (notification === "PRODUCT_SEARCH") {
			this.loaded = true;
			this.processDrivestateData(JSON.parse(payload).response);
			this.updateDom();
		}
		else if (notification === "PRODUCT_DETAILS") {
			this.loaded = true;
			this.processVehicleData(JSON.parse(payload).response);
			this.updateDom();
		}
		else if (notification === "LOCATION_DATA") {
			this.loaded = true;
			this.processVehicleData(JSON.parse(payload).response);
			this.updateDom();
		}
	},

	getDom: function() {
		// create element wrapper for show into the module
		var self = this;

		// create element wrapper for show into the module
		var wrapper = document.createElement("div");
		wrapper.style.cssText = "float: right;";

		// Data from helper
		if (this.dataNotification) {
			var wrapperDataNotification = document.createElement("div");
			// translations  + datanotification
			wrapperDataNotification.innerHTML =  this.translate("UPDATE") + ": " + this.dataNotification.date;

			wrapper.appendChild(wrapperDataNotification);
		}
		return wrapper;
}
});

node_helper.js

const NodeHelper = require("node_helper");
var request = require("request");

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

getToken(config) {
	try {
		const token = getTokenInternal(config);
		return token;
    } catch (err) {
		console.log(err);
		return "abc";
	}
},

getTokenInternal(config) {

	// Set the configuration settings
	const credentials = {
		client: {
			id: config.client_id,
			secret: config.client_secret
		},
		auth: {
			tokenHost: "https://api.kroger.com",
			tokenPath: "/v1/connect/oauth2/token"
		  },
		  http: {
			headers: { "User-Agent": "MMM-GroceryApp" }
		}
	};

const oauth2 = require("Basic").create(credentials);

	const tokenConfig = {
		grant_type: config.client_credentials,
		client_secret: config.client_secret,
		client_id: config.client_id
	};

	try {
		var tokenObject = oauth2.client_secret.getToken(tokenConfig);
		return tokenObject.access_token;
	} catch (error) {
		console.log("Access Token Error", error.message);
}
},

	
getData: function() {
		var self = this;

function getCartData(token) {
			request.get({
				url: baseUrl + "/v1/cart/add",
				headers: {
					"Accept": "application/json",
					"Authorization": "Bearer {{TOKEN}}"
					  },
				"processData": false,
				"data": "{\n  \"items\": [\n     {\n       \"upc\": \"0001200016268\",\n       \"quantity\": \2\\n      }\n    ]\n }"
				},
			function (error, response) {
				if (!error && response.statusCode == 400) {
					self.sendSocketNotification("CART_DATA", response);
				}
			});
		}
		function getProductSearch(token) {
			request.get({
				url: baseUrl + "/v1/products?filter.brand={{BRAND}}&filter.term={{TERM}}&filter.locationId={{LOCATION_ID}}",
				headers: {
					"Accept": "application/json",
					"Authorization": "Bearer {{TOKEN}}"
					  },
			function (error, response) {
				if (!error && response.statusCode == 400) {
					self.sendSocketNotification("PRODUCT_SEARCH", response);
				}
			}}
		);
	}
		function getProductDetails(token) {
			request.get({
				url: baseUrl + "/v1/products/{{ID}}?filter.locationId={{LOCATION_ID}}",
				headers: {
					"Accept": "application/json",
					"Authorization": "Bearer {{TOKEN}}"
					  },
			function (error, response) {
				if (!error && response.statusCode == 400) {
					self.sendSocketNotification("PRODUCT_DETAILS", response);
				}
			}}
		);
	}
		function getLocationData(token) {
			request.get({
				url: baseUrl + "/v1/locations",
				headers: {
					"Accept": "application/json",
					"Authorization": "Bearer {{TOKEN}}"
					  },
			function (error, response) {
				if (!error && response.statusCode == 400) {
					self.sendSocketNotification("LOCATION_DATA", response);
				}
			}}
	);
	}
	if (accessToken === null ) {
			var tempToken = getToken(this.config);
			var localToken = tempToken.then(function(accessToken){
				return accessToken;
			});

			localToken.then(function(token) {
				accessToken = token;
				getCartData(token);
				getProductSearch(token);
				getProductDetails(token);
				getLocationData(token);
		});
	}
		else {
			getCartData(accessToken);
			getProductSearch(accessToken);
			getProductDetails(accessToken);
			getLocationData(token);
	}
	},

		socketNotificationReceived: function(notification, payload) {
		if (notification === "MMM-GroceryApp") {
			this.sendSocketNotification("MMM-GroceryApp");
			self.config = payload;
			self.sendSocketNotification("STARTED", true);
			self.getData();
			self.started = true;
		} else if (notification == "CONFIG") {
			self.sendSocketNotification("CART_DATA", self.cart_data);
			self.sendSocketNotification("PRODUCT_SEARCH", self.product_search);
			self.sendSocketNotification("PRODUCT_DETAILS", self.product_details);
			self.sendSocketNotification("LOCATION_DATA", self.location_data);
	    }
	}
});

I really appreciate any assistance and/or tips you are able to provide :)

[sdetweil]

@CurlyQ12391 if u have no notification , then getDom () returns a div with no visible content

this is why most modules put up a dummy message “Loading…” until data arrives

if you add console.log() calls in your node helper
then u can look at the messages in the mm startup messages

use npm start

[sdetweil]

@CurlyQ12391 also, many of the calls u are making, are not synchronous
(they return with data only when done)

but async, they return now(immediately) , and also later when the actual work completes.
but you assumed u got the answer,

you could add debugging to the ok (not error) path to trace the calls happening

[sdetweil]

@CurlyQ12391 i made a git repo of this…
https://github.com/sdetweil/MMM-GroceryApp

a few problems

the functions at the end of node_helper use self, but it wasn’t defined
the socket notification “config” sends back results, but you haven’t got them yet

but getData() has a flow error… accessToken not defined…

don’t know what you were trying to do

I also added the dummy ‘Loading…’ at the end of getDom() (else {'…})

[CurlyQ12391]

@sdetweil, firstly I’d like to apologize for the gap in my response! I broke my main config shortly after posting this and ended up having to re-flashing my SD card and rebuilding my mirror back up the way I had it from scratch.

I really appreciate you taking the time to answer my question.

My intent with this module was to basically house my grocery cart, similar to the interface I have on my phone or visiting the website. I think that an easier approach might be to use an iFrame module for the website, but I was really wanting to utilize the authorization token process to prevent having to login each time - since the end goal is to have the Mirror up on the wall without a keyboard/mouse.

[sdetweil]

@CurlyQ12391 i understood the intent of the module…

but looking at the specific code in node_helper trying to setup the call to get the data is where I don’t understand your plan

[CurlyQ12391]

@sdetweil my apologies.

The code within the node_helper is mostly from the Kroger Developer documentation. However, I am very new to all this and there is a very good chance that I transferred the documentation over incorrectly or in a way that wont work. I may have incorrectly assumed that by using the Kroger Docs/code it would result in getting similar data to what I’d see upon logging into the mobile/desktop site.

[sdetweil]

@CurlyQ12391 np. I was just trying to help you make progress. I know nothing about the API. but couldnt find anything similar to the code in the helper