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A New Chapter for MagicMirror: The Community Takes the Lead
Read the statement by Michael Teeuw here.

CORS using node_helper.js for Uber and Lyft APIs

Scheduled Pinned Locked Moved Troubleshooting
10 Posts 4 Posters 3.8k Views 3 Watching
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  • A Offline
    Anhalter42 @kal
    last edited by Jun 29, 2017, 9:34 PM

    @kal are you looking at the correct console? Log.log logs to electron console, which is visible when starting MM with npm start dev (or by pressing some shortcut which I forgot; search the forum if you want to know). The terminal where you start MM is kind of useless for debugging :(

    B K 2 Replies Last reply Jun 29, 2017, 10:26 PM Reply Quote 0
    • B Offline
      bhepler Module Developer @Anhalter42
      last edited by Jun 29, 2017, 10:26 PM

      @Anhalter42 said in CORS using node_helper.js for Uber and Lyft APIs:

      (or by pressing some shortcut which I forgot; search the forum if you want to know).

      Try F12.

      1 Reply Last reply Reply Quote 1
      • C Offline
        cowboysdude Module Developer
        last edited by Jun 29, 2017, 10:33 PM

        As an example ONLY!

           getStuff: function(url) {
          request({
                url: "https://www.whereever.com/stuff.json",
                method: 'GET',
                headers: {
                    'User-Agent': 'MagicMirror/1.0 '
                }
          }, (error, response, body) => {
                if (!error && response.statusCode == 200) {
           blah..blah....blah.......
        
        K 1 Reply Last reply Jun 29, 2017, 11:13 PM Reply Quote 0
        • K Offline
          kal @Anhalter42
          last edited by Jun 29, 2017, 11:08 PM

          @Anhalter42 I’m looking at the JavaScript console. The IP of my laptop is whitelisted, so I go to https://IP.of.Raspberry.Pi:8080 in Chrome and then go to View>Developer>JavaScript Console.

          Is there another way I can get statements to print to that console ?

          A 1 Reply Last reply Jun 30, 2017, 11:16 AM Reply Quote 0
          • K Offline
            kal @cowboysdude
            last edited by Jun 29, 2017, 11:13 PM

            @cowboysdude isn’t that what I am doing? Can you explain how your solution differs from mine?

            1 Reply Last reply Reply Quote 0
            • C Offline
              cowboysdude Module Developer
              last edited by Jun 29, 2017, 11:51 PM

              When you request a webpage, your browser sends a number of headers to the server hosting the site that you’re visiting.

              These headers occur during a negotiation process that helps the browser and the hosting server determine the best way to provide the requested information. The user-agent header identifies the application requesting the information from the server, typically a browser. This identification string is called the user-agent string and contains tokens that provide specific details about the program making the request.

              K 1 Reply Last reply Jun 30, 2017, 12:22 AM Reply Quote 0
              • K Offline
                kal @cowboysdude
                last edited by Jun 30, 2017, 12:22 AM

                @cowboysdude I don’t think the user-agent string is required when making an HTTP request. According to the Uber API docs it doesn’t look like I need one.

                1 Reply Last reply Reply Quote 0
                • A Offline
                  Anhalter42 @kal
                  last edited by Jun 30, 2017, 11:16 AM

                  @kal well then… I know its not helping, but it should work as you described. Not seeing anything in js console is a serious problem when developing. Did you try other browsers? If nothing appears in any browser AND on raspberry itself (with npm start dev), then something is seriously wrong…

                  1 Reply Last reply Reply Quote 0
                  • K Offline
                    kal
                    last edited by Jul 1, 2017, 6:07 PM

                    I was able to fix this. See below for the module code

                    /* global Module */
                    
                    /* Magic Mirror
                     * Module: Uber
                     * 
                     * Shows the time and surge pricing for UberX
                     *
                     * By Kyle Kelly
                     * based on MagicMirror work by Michael Teeuw http://michaelteeuw.nl
                     * and by derickson https://github.com/derickson/MMderickson/tree/master/uber
                     * MIT Licensed.
                     */
                    
                    Module.register("MMM-uber",{
                    
                    	// Default module config.
                    	defaults: {
                    		lat: null,
                    		lng: null,
                    		ride_type: "uberX",
                    		uberServerToken: null,
                    
                    		updateInterval: 5 * 60 * 1000, // every 5 minutes
                    		animationSpeed: 1000,
                    	},
                    
                    	// Define required scripts.
                    	getScripts: function() {
                    		return ["moment.js", "https://code.jquery.com/jquery-2.2.3.min.js"];
                    	},
                    
                    	// Define required styles.
                    	getStyles: function() {
                    		return ["MMM-uber.css"];
                    	},
                    
                    	start: function() {
                    		Log.info("Starting module: " + this.name);
                    
                    		// Set locale.
                    		moment.locale(config.language);
                    
                    		// variables that will be loaded from service
                    		this.uberTime = null;
                    		this.uberSurge = null;
                    
                    		this.loaded = false;
                    		Log.log("Sending CONFIG to node_helper.js in " + this.name);
                    		Log.log("Payload: " + this.config)
                    		this.sendSocketNotification('CONFIG', this.config);
                    	},
                    
                    	// unload the results from uber services
                    	processUber: function(FLAG, result) {
                    		var self = this;
                    		Log.log("ProcessUber");
                    
                    		// go through the time data to find the uberX product
                    		if (FLAG === "TIME"){
                    			Log.log("Time:");
                    			Log.log(result);
                    			for (var i = 0, count = result.times.length; i < count ; i++) {
                    
                    				var rtime = result.times[i];
                    				
                    				if(rtime.display_name === this.config.ride_type){
                    					// convert estimated seconds to minutes
                    					this.uberTime = rtime.estimate / 60;
                    					break;
                    				}
                    			}
                    		}
                    
                    		// go through the price data to find the uberX product
                    		else if (FLAG === "PRICE"){
                    			Log.log("Price:");
                    			Log.log(result);
                    			for( var i=0, count = result.prices.length; i< count; i++) {
                    				var rprice = result.prices[i];
                    
                    				if(rprice.display_name === this.config.ride_type){
                    					// grab the surge pricing
                    					this.uberSurge = rprice.surge_multiplier;
                    					break;
                    				}
                    			}
                    		}
                    	},
                    
                    	// Override dom generator.
                    	getDom: function() {
                    		var wrapper = document.createElement("div");
                    
                    		var uber = document.createElement("div");
                    		uber.className = "uberButton";
                    		
                    		var uberIcon = document.createElement("img");
                    		uberIcon.className = "badge";
                    		uberIcon.src = "modules/MMM-uber/UBER_API_Badges_1x_22px.png";
                    
                    		var uberText = document.createElement("span");
                    
                    		if(this.loaded) {
                    			var myText = this.config.ride_type + " in "+ this.uberTime +" min ";
                    			Log.log("ubersurge: " + this.uberSurge);
                    			// only show the surge pricing if it is above 1.0
                    			if(typeof this.uberSurge !== "undefined" && this.uberSurge > 1.0){
                    				myText += " - " + this.uberSurge + "X surge pricing";
                    			}
                    			uberText.innerHTML = myText;
                    		} else {
                    			// Loading message
                    			uberText.innerHTML = "Checking Uber status ...";
                    		}
                    
                    		uber.appendChild(uberIcon);
                    		uber.appendChild(uberText);
                    		
                    		wrapper.appendChild(uber);
                    		return wrapper;
                    	},
                    
                    	socketNotificationReceived: function(notification, payload) {
                    		Log.log(this.name + " received a socket notification: " + notification + " - Payload: " + payload);
                    		if (notification === "TIME") {
                    			this.processUber("TIME", JSON.parse(payload));
                    			this.updateDom(this.config.animationSpeed)
                    		}
                    		else if (notification === "PRICE") {
                    			this.processUber("PRICE", JSON.parse(payload));
                    			this.loaded = true;
                    			this.updateDom(this.config.animationSpeed);
                    		}
                    	}
                    
                    });
                    
                    

                    and the node_helper.js code

                    'use strict';
                    
                    /* Magic Mirror
                     * Module: MMM-uber
                     *
                     * By Kyle Kelly
                     * MIT Licensed.
                     */
                    
                    const NodeHelper = require('node_helper');
                    var request = require('request');
                    var moment = require('moment');
                    
                    module.exports = NodeHelper.create({
                    
                    	start: function() {
                    		var self = this;
                    		console.log("Starting node helper for: " + this.name);
                    
                    		this.config = null;
                    	},
                    
                    	getData: function() {
                    		var self = this;
                    
                    		this.sendSocketNotification("Test", 2);
                    		this.sendSocketNotification("LATITUDE", this.config.lat);
                    		this.sendSocketNotification("LONGITUDE", this.config.lng);
                    						
                    		
                    		request({
                    			url: "https://api.uber.com/v1/estimates/time?start_latitude=" + this.config.lat + "&start_longitude=" + this.config.lng,
                    			method: 'GET',
                    			headers: {
                    		        'Authorization': 'Token ' + this.config.uberServerToken,
                    		        'Accept-Language': 'en_US',
                    		        'Content-Type': 'application/json'
                    		    },
                    		}, function (error, response, body) {
                    			
                    			if (!error && response.statusCode == 200) {
                    				self.sendSocketNotification("TIME", body);
                    			}
                    			else {
                    				self.sendSocketNotification("ERROR", "In TIME request with status code: " + response.statusCode);
                    			}
                    		});
                    
                    		request({
                    			url: "https://api.uber.com/v1/estimates/price?start_latitude=" + this.config.lat + "&start_longitude=" + this.config.lng + "&end_latitude=" + this.config.lat + "&end_longitude=" + this.config.lng,
                    			method: 'GET',
                    			headers: {
                    				'Authorization': 'Token ' + this.config.uberServerToken,
                    		        'Accept-Language': 'en_US',
                    		        'Content-Type': 'application/json'
                    		    },
                    		}, function (error, response, body) {
                    			
                    			if (!error && response.statusCode == 200) {
                    				self.sendSocketNotification("PRICE", body);
                    			}
                    			else {
                    				self.sendSocketNotification("ERROR", "In PRICE request with status code: " + response.statusCode);
                    			}
                    		});
                    
                    		setTimeout(function() { self.getData(); }, this.config.updateInterval);
                    		
                    	},
                    
                    	socketNotificationReceived: function(notification, payload) {
                    		//var self = this;
                    		this.sendSocketNotification("Test", 0);
                    		if (notification === 'CONFIG') {
                    			this.sendSocketNotification("Test", 1);
                    			this.config = payload;
                    			this.getData();
                    		}
                    	}
                    });
                    
                    
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