Update app.js

added an if statement to display an alert message if the tv config file is not present.

apps/tvremote/app.js

@@ -9,13 +9,15 @@ let devicefile = require("Storage").readJSON(deviceFileName, true);
 //console.log(devicefile);
 
 
-let serverDns = serverData.webServerDns;
-let serverPort = serverData.port;
-let tvIp = serverData.tvIp;
-let username = serverData.username;
-let password = serverData.password;
+let serverDns = "webServerDns" in serverData ? serverData.webServerDns : 'undefined';
 
-let panaIp = "tvIp" in serverData ? serverData.tvIp : 'undefined';
+let serverPort = "port" in serverData ? serverData.port : 'undefined';
+let tvIp = "tvIp" in serverData ? serverData.tvIp : 'undefined';
+let username = "username" in serverData ? serverData.username : 'undefined';
+let password = "password" in serverData ? serverData.password : 'undefined';
+
+let panaIp = tvIp;
+//"tvIp" in serverData ? serverData.tvIp : 'undefined';
 let settingsPort = "port" in serverData ? serverData.port : 'undefined';
 
 let counter;
@@ -31,7 +33,12 @@ let RIGHT_MARGIN = 15;
 let midpoint = (g.getWidth() / 2);
 let IP_AREA = [0, RESULT_HEIGHT, g.getWidth(), g.getHeight()]; // values used for key buttons
 let KEY_AREA = [0, 24, g.getWidth(), g.getHeight()];
-let COLORS = {DEFAULT: ['#FF0000'], BLACK: ['#000000'], WHITE: ['#FFFFFF'], GREY: ['#808080', '#222222']}; // background
+let COLORS = {
+  DEFAULT: ['#FF0000'],
+  BLACK: ['#000000'],
+  WHITE: ['#FFFFFF'],
+  GREY: ['#808080', '#222222']
+}; // background
 
 let sourceApps = {
   "selection": {
@@ -195,8 +202,7 @@ function sendPost(keyPress) {
   };
 
   Bangle.http(
-    serverUrl,
-    {
+      serverUrl, {
         method: 'POST',
         headers: {
           'Authorization': `Basic ${credentials}`,
@@ -211,12 +217,11 @@ function sendPost(keyPress) {
 }
 
 function receiveDevices() {
-  serverPort = settingsPort;
+  let serverPort = settingsPort;
   let credentials = btoa(`${username}:${password}`);
   let serverUrl = `https://${serverDns}:${serverPort}/ssdp-devices.json`;
   return Bangle.http(
-    serverUrl,
-    {
+    serverUrl, {
       method: 'GET',
       headers: {
         'Authorization': `Basic ${credentials}`
@@ -306,9 +311,7 @@ function buttonPress(val, screenValue) {
     if (val === '<') sendPost('back');
     else if (val === 'ok') sendPost('enter');
     else sendPost("num_" + val);
-  }
-
-  else if (screenValue === "selection") sendPost(selection[val].key);
+  } else if (screenValue === "selection") sendPost(selection[val].key);
   else if (screenValue === "volume") sendPost(volume[val].key);
 }
 
@@ -453,9 +456,15 @@ function subMenu() {
 
   if (typeof settingsPort !== 'undefined' && settingsPort !== 'undefined') {
     let portHeader = `Port: ${settingsPort}`;
-    settingssub[portHeader] = function() { IPASSIGN = "port"; ipScreen();};
+    settingssub[portHeader] = function() {
+      IPASSIGN = "port";
+      ipScreen();
+    };
   } else {
-    settingssub["Set DNS Port"] = function() { IPASSIGN = "port"; ipScreen();};
+    settingssub["Set DNS Port"] = function() {
+      IPASSIGN = "port";
+      ipScreen();
+    };
   }
 
   if (typeof panaIp !== 'undefined' && panaIp !== 'undefined') {
@@ -467,14 +476,23 @@ function subMenu() {
       console.log(devicefile);
     };
   } else {
-      settingssub["Set Pana IP"] = function() { IPASSIGN = "pana"; ipScreen();};
+    settingssub["Set Pana IP"] = function() {
+      IPASSIGN = "pana";
+      ipScreen();
+    };
   }
 
   if (typeof samsIp !== 'undefined' && panaIp !== 'undefined') {
     let samsheader = `Sams IP: ${samsIp}`;
-    settingssub[samsheader] = function() { IPASSIGN = "sams"; ipScreen();};
+    settingssub[samsheader] = function() {
+      IPASSIGN = "sams";
+      ipScreen();
+    };
   } else {
-    settingssub["Set Sams IP"] = function() { IPASSIGN = "sams"; ipScreen();};
+    settingssub["Set Sams IP"] = function() {
+      IPASSIGN = "sams";
+      ipScreen();
+    };
   }
 
   E.showMenu(settingssub);
@@ -515,8 +533,11 @@ let parsedResp = JSON.parse(devicefile.resp);
 
 
 let deviceSelect = {
-  "" : { title : "Device Select",
-         back : function() { subMenu(); }
+  "": {
+    title: "Device Select",
+    back: function() {
+      subMenu();
+    }
   },
   "Manual IP Assign": function() {
     ipScreen();
@@ -624,4 +645,11 @@ Bangle.on('touch', touchHandler);
 
 Bangle.loadWidgets();
 Bangle.drawWidgets();
+
+if (serverData === undefined) {
+  E.showAlert(`${serverDataFile}.json missing.\nSee READ.me`, "Config Error").then(function() {
     mainMenu();
+  });
+} else {
+  mainMenu();
+}