- Added autoTimezone property to the clock

CHANGELOG.md

@@ -16,6 +16,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - Disabled the screensaver on raspbian with installation script 
 - Added option to truncate the number of vertical lines a calendar item can span if `wrapEvents` is enabled.
 - Added autoLocation options for weather forcast and current weather modules.
+- Added autoTimezone option for the default clock module.
 
 ### Updated
 - Bumped the Electron dependency to v3.0.13 to support the most recent Raspbian. [#1500](https://github.com/MichMich/MagicMirror/issues/1500)

modules/default/clock/clock.js

@@ -26,6 +26,7 @@ Module.register("clock",{
 		analogShowDate: "top", // options: false, 'top', or 'bottom'
 		secondsColor: "#888888",
 		timezone: null,
+		autoTimezone: false
 	},
 	// Define required scripts.
 	getScripts: function() {
@@ -39,16 +40,31 @@ Module.register("clock",{
 	start: function() {
 		Log.info("Starting module: " + this.name);
 
-		// Schedule update interval.
-		var self = this;
-		setInterval(function() {
-			self.updateDom();
-		}, 1000);
+		if (this.config.autoTimezone) {
+			this.sendSocketNotification("AUTO_TIMEZONE");
+		} else {
+			// Schedule update interval.
+			var self = this;
+			setInterval(function() {
+				self.updateDom();
+			}, 1000);
+		}
 
 		// Set locale.
 		moment.locale(config.language);
 
 	},
+
+	socketNotificationReceived: function (notification, payload) {
+		if (notification === "UPDATE_TIMEZONE") {
+			var self = this;
+			self.config.timezone = payload.timezone;
+			setInterval(function() {
+				self.updateDom();
+			}, 1000);
+		}
+	},
+
 	// Override dom generator.
 	getDom: function() {
 

modules/default/clock/node_helper.js

@@ -0,0 +1,29 @@
+var http = require("http");
+var NodeHelper = require("node_helper");
+
+module.exports = NodeHelper.create({
+	start: function () {
+	},
+
+	socketNotificationReceived: function (notification, payload) {
+		var self = this;
+
+		if (notification === "AUTO_TIMEZONE") {
+			console.log("Loading timezone...");
+			http.get("http://ip-api.com/json", function (req) {
+				var data = "";
+				req.on("data", function (d) {
+					data += d;
+				});
+				req.on("end", function () {
+					var body = JSON.parse(data);
+					payload.timezone = body.timezone;
+					self.sendSocketNotification("UPDATE_TIMEZONE", payload);
+				});
+			}).on("error", function () {
+				payload.error = "Could not figure out the timezone.";
+				self.sendSocketNotification("UPDATE_TIMEZONE", payload);
+			});
+		}
+	}
+});