Move device type detection to client side

We don't need the server to tell us our user agent--we can get it
ourselves through navigator.userAgent and parse it on the frontend.

I've replaced device-detector-js with Bowser because device-detector-js
is really slow, freezing for up to 500ms to parse a single user agent.

package-lock.json

@@ -20,7 +20,6 @@
                 "cookie-parser": "^1.4.6",
                 "cors": "^2.8.5",
                 "csrf-csrf": "^2.2.3",
-                "device-detector-js": "^3.0.3",
                 "express": "^4.18.2",
                 "form-data": "^4.0.0",
                 "google-translate-api-browser": "^3.0.1",
@@ -1777,14 +1776,6 @@
                 "node": ">=8"
             }
         },
-        "node_modules/device-detector-js": {
-            "version": "3.0.3",
-            "resolved": "https://registry.npmjs.org/device-detector-js/-/device-detector-js-3.0.3.tgz",
-            "integrity": "sha512-jM89LJAvP6uOd84at8OlD9dWP8KeYCCHUde0RT0HQo/stdoRH4b54Xl/fntx2nEXCmqiFhmo+/cJetS2VGUHPw==",
-            "engines": {
-                "node": ">= 8.11.4"
-            }
-        },
         "node_modules/digest-fetch": {
             "version": "1.3.0",
             "resolved": "https://registry.npmjs.org/digest-fetch/-/digest-fetch-1.3.0.tgz",

package.json

@@ -10,7 +10,6 @@
         "cookie-parser": "^1.4.6",
         "cors": "^2.8.5",
         "csrf-csrf": "^2.2.3",
-        "device-detector-js": "^3.0.3",
         "express": "^4.18.2",
         "form-data": "^4.0.0",
         "google-translate-api-browser": "^3.0.1",

public/scripts/RossAscends-mods.js

@@ -36,6 +36,7 @@ import { chat_completion_sources, oai_settings } from './openai.js';
 import { getTokenCount } from './tokenizers.js';
 import { textgen_types, textgenerationwebui_settings as textgen_settings } from './textgen-settings.js';
 
+import Bowser from '../lib/bowser.min.js';
 
 var RPanelPin = document.getElementById('rm_button_panel_pin');
 var LPanelPin = document.getElementById('lm_button_panel_pin');
@@ -98,43 +99,22 @@ export function humanizeGenTime(total_gen_time) {
     return time_spent;
 }
 
+let parsedUA = null;
+try {
+    parsedUA = Bowser.parse(navigator.userAgent);
+} catch {
+    // In case the user agent is an empty string or Bowser can't parse it for some other reason
+}
+
+
 /**
  * Checks if the device is a mobile device.
  * @returns {boolean} - True if the device is a mobile device, false otherwise.
  */
 export function isMobile() {
-    const mobileTypes = ['smartphone', 'tablet', 'phablet', 'feature phone', 'portable media player'];
-    const deviceInfo = getDeviceInfo();
+    const mobileTypes = ['mobile', 'tablet'];
 
-    return mobileTypes.includes(deviceInfo?.device?.type);
-}
-
-/**
- * Loads device info from the server. Caches the result in sessionStorage.
- * @returns {object} - The device info object.
- */
-function getDeviceInfo() {
-    let deviceInfo = null;
-
-    if (sessionStorage.getItem('deviceInfo')) {
-        deviceInfo = JSON.parse(sessionStorage.getItem('deviceInfo'));
-    } else {
-        $.ajax({
-            url: '/deviceinfo',
-            dataType: 'json',
-            async: false,
-            cache: true,
-            success: function (result) {
-                sessionStorage.setItem('deviceInfo', JSON.stringify(result));
-                deviceInfo = result;
-            },
-            error: function () {
-                console.log('Couldn\'t load device info. Defaulting to desktop');
-                deviceInfo = { device: { type: 'desktop' } };
-            },
-        });
-    }
-    return deviceInfo;
+    return mobileTypes.includes(parsedUA?.platform?.type);
 }
 
 function shouldSendOnEnter() {

server.js

@@ -27,7 +27,6 @@ const responseTime = require('response-time');
 // net related library imports
 const net = require('net');
 const dns = require('dns');
-const DeviceDetector = require('device-detector-js');
 const fetch = require('node-fetch').default;
 const ipaddr = require('ipaddr.js');
 const ipMatching = require('ip-matching');
@@ -293,12 +292,6 @@ app.use(multer({ dest: UPLOADS_PATH, limits: { fieldSize: 10 * 1024 * 1024 } }).
 app.get('/', function (request, response) {
     response.sendFile(process.cwd() + '/public/index.html');
 });
-app.get('/deviceinfo', function (request, response) {
-    const userAgent = request.header('user-agent');
-    const deviceDetector = new DeviceDetector();
-    const deviceInfo = deviceDetector.parse(userAgent || '');
-    return response.send(deviceInfo);
-});
 app.get('/version', async function (_, response) {
     const data = await getVersion();
     response.send(data);