Update path formatting and params usage for new express API

Notably instead of params[0] from '*' being https://asdf/fdsa it will
now be params.proxyPath from '*proxyPath' being `['https:', '', 'asdf',
fdsa']` so this updates with a small use of `.join` and addition of
wildcard names

libraries/LocalUIApp.js

@@ -63,7 +63,7 @@ class LocalUIApp {
             }
             res.status(403).send('access prohibited to non-script non-style file');
         });
-        this.app.get('/proxy/*', proxyRequestHandler);
+        this.app.get('/proxy/*proxyPath', proxyRequestHandler);
         if (this.userinterfacePath && fs.existsSync(this.userinterfacePath)) {
             this.app.use(express.static(this.userinterfacePath));
         } else {

libraries/serverHelpers/proxyRequestHandler.js

@@ -1,7 +1,7 @@
 const https = require('https');
 
 const proxyRequestHandler = (req, res) => {
-    const input = req.params[0];
+    const input = req.params.proxyPath.join('/');
     if (!input.includes('://')) {
         const proxyURL = `https://spatial.ptc.io/${req.params[0]}`;
         const headers = req.headers;

routers/object.js

@@ -426,13 +426,13 @@ router.post('/:objectName/frame/:frameName/pinned/', function (req, res) {
 });
 
 // Check the existence of a file at a filepath within the .identity directory of the specified object
-router.get('/:objectName/checkFileExists/*', async (req, res) => {
+router.get('/:objectName/checkFileExists/*filePath', async (req, res) => {
     if (!utilities.isValidId(req.params.objectName)) {
         res.status(400).send('Invalid object name. Must be alphanumeric.');
         return;
     }
     // Extract the file path from the URL
-    const filePath = req.params[0];
+    const filePath = req.params.filePath.join('/');
     objectController.checkFileExists(req.params.objectName, filePath).then(exists => {
         res.json({ exists: exists });
     }).catch(e => {

server.js

@@ -2216,7 +2216,7 @@ function objectWebServer() {
 
         // Proxies requests to spatial.ptc.io, for CORS video playback
         const proxyRequestHandler = require('./libraries/serverHelpers/proxyRequestHandler.js');
-        webServer.get('/proxy/*', proxyRequestHandler);
+        webServer.get('/proxy/*proxyPath', proxyRequestHandler);
 
         const {oauthRefreshRequestHandler, oauthAcquireRequestHandler} = require('./libraries/serverHelpers/oauthRequestHandlers.js');
         webServer.post('/oauthRefresh', oauthRefreshRequestHandler);