PWA

src/App.js

@@ -89,17 +89,17 @@ function App() {
                 "Content-Type": "application/json",
             },
             body: JSON.stringify({
-                input: "Summarize this chat in one short statement and simply return it.",
+                input: "!!! Extract main topic from this chat in one simple short statement and return it without anything else: ",
                 chatHistory: chatHistory.map((h) => ({ user: h.user, assistant: h.assistant })),
             }),
         });
 
         if (response.ok) {
             const data = await response.json();
-            return data?.textResponse?.slice(0, 40) + "...";
+            return data?.textResponse?.slice(0, 50) + "...";
         } else {
             const messages = chatHistory.map((chat) => chat.user + (chat.assistant || ""));
-            const summary = messages.join(" ").slice(0, 40) + "...";
+            const summary = messages.join(" ").slice(0, 50) + "...";
             return summary;
         }
     };

src/index.js

@@ -4,6 +4,7 @@ import "./index.css";
 import App from "./App";
 import { ThemeProvider } from "@mui/material";
 import theme from "./theme";
+import * as serviceWorkerRegistration from "./serviceWorkerRegistration";
 
 const root = ReactDOM.createRoot(document.getElementById("root"));
 root.render(
@@ -13,3 +14,5 @@ root.render(
         </React.StrictMode>
     </ThemeProvider>
 );
+
+serviceWorkerRegistration.register();

src/service-worker.js

@@ -0,0 +1,73 @@
+/* eslint-disable no-restricted-globals */
+
+// This service worker can be customized!
+// See https://developers.google.com/web/tools/workbox/modules
+// for the list of available Workbox modules, or add any other
+// code you'd like.
+// You can also remove this file if you'd prefer not to use a
+// service worker, and the Workbox build step will be skipped.
+
+import { clientsClaim } from "workbox-core";
+import { ExpirationPlugin } from "workbox-expiration";
+import { precacheAndRoute, createHandlerBoundToURL } from "workbox-precaching";
+import { registerRoute } from "workbox-routing";
+import { CacheFirst } from 'workbox-strategies';
+
+clientsClaim();
+
+// Precache all of the assets generated by your build process.
+// Their URLs are injected into the manifest variable below.
+// This variable must be present somewhere in your service worker file,
+// even if you decide not to use precaching. See https://cra.link/PWA
+precacheAndRoute(self.__WB_MANIFEST);
+
+// Set up App Shell-style routing, so that all navigation requests
+// are fulfilled with your index.html shell. Learn more at
+// https://developers.google.com/web/fundamentals/architecture/app-shell
+const fileExtensionRegexp = new RegExp("/[^/?]+\\.[^/]+$");
+registerRoute(
+    // Return false to exempt requests from being fulfilled by index.html.
+    ({ request, url }) => {
+        // If this isn't a navigation, skip.
+        if (request.mode !== "navigate") {
+            return false;
+        } // If this is a URL that starts with /_, skip.
+
+        if (url.pathname.startsWith("/_")) {
+            return false;
+        } // If this looks like a URL for a resource, because it contains // a file extension, skip.
+
+        if (url.pathname.match(fileExtensionRegexp)) {
+            return false;
+        } // Return true to signal that we want to use the handler.
+
+        return true;
+    },
+    createHandlerBoundToURL(process.env.PUBLIC_URL + "/index.html")
+);
+
+// An example runtime caching route for requests that aren't handled by the
+// precache, in this case same-origin .png requests like those from in public/
+registerRoute(
+    // Add in any other file extensions or routing criteria as needed.
+    ({ url }) => url.origin === self.location.origin && (url.pathname.endsWith(".jpeg") ||
+        url.pathname.endsWith(".png")), // Customize this strategy as needed, e.g., by changing to CacheFirst.
+    new CacheFirst({
+        cacheName: "images",
+        plugins: [
+            // Ensure that once this runtime cache reaches a maximum size the
+            // least-recently used images are removed.
+            new ExpirationPlugin({ maxEntries: 1550 }),
+        ],
+    })
+);
+
+// This allows the web app to trigger skipWaiting via
+// registration.waiting.postMessage({type: 'SKIP_WAITING'})
+self.addEventListener("message", (event) => {
+    if (event.data && event.data.type === "SKIP_WAITING") {
+        self.skipWaiting();
+    }
+});
+
+// Any other custom service worker logic can go here.

src/serviceWorkerRegistration.js

@@ -0,0 +1,125 @@
+// This optional code is used to register a service worker.
+// register() is not called by default.
+
+// This lets the app load faster on subsequent visits in production, and gives
+// it offline capabilities. However, it also means that developers (and users)
+// will only see deployed updates on subsequent visits to a page, after all the
+// existing tabs open on the page have been closed, since previously cached
+// resources are updated in the background.
+
+// To learn more about the benefits of this model and instructions on how to
+// opt-in, read https://cra.link/PWA
+
+const isLocalhost = Boolean(
+    window.location.hostname === "localhost" ||
+        // [::1] is the IPv6 localhost address.
+        window.location.hostname === "[::1]" ||
+        // 127.0.0.0/8 are considered localhost for IPv4.
+        window.location.hostname.match(/^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/)
+);
+
+export function register(config) {
+    if (process.env.NODE_ENV === "production" && "serviceWorker" in navigator) {
+        // The URL constructor is available in all browsers that support SW.
+        const publicUrl = new URL(process.env.PUBLIC_URL, window.location.href);
+        if (publicUrl.origin !== window.location.origin) {
+            // Our service worker won't work if PUBLIC_URL is on a different origin
+            // from what our page is served on. This might happen if a CDN is used to
+            // serve assets; see https://github.com/facebook/create-react-app/issues/2374
+            return;
+        }
+
+        window.addEventListener("load", () => {
+            const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`;
+
+            if (isLocalhost) {
+                // This is running on localhost. Let's check if a service worker still exists or not.
+                checkValidServiceWorker(swUrl, config);
+
+                // Add some additional logging to localhost, pointing developers to the
+                // service worker/PWA documentation.
+                navigator.serviceWorker.ready.then(() => {});
+            } else {
+                // Is not localhost. Just register service worker
+                registerValidSW(swUrl, config);
+            }
+        });
+    }
+}
+
+function registerValidSW(swUrl, config) {
+    navigator.serviceWorker
+        .register(swUrl)
+        .then((registration) => {
+            registration.onupdatefound = () => {
+                const installingWorker = registration.installing;
+                if (installingWorker == null) {
+                    return;
+                }
+                installingWorker.onstatechange = () => {
+                    if (installingWorker.state === "installed") {
+                        if (navigator.serviceWorker.controller) {
+                            // At this point, the updated precached content has been fetched,
+                            // but the previous service worker will still serve the older
+                            // content until all client tabs are closed.
+                            console.log(
+                                "New content is available and will be used when all " +
+                                    "tabs for this page are closed. See https://cra.link/PWA."
+                            );
+
+                            // Execute callback
+                            if (config && config.onUpdate) {
+                                config.onUpdate(registration);
+                            }
+                        } else {
+                            // At this point, everything has been precached.
+                            // Execute callback
+                            if (config && config.onSuccess) {
+                                config.onSuccess(registration);
+                            }
+                        }
+                    }
+                };
+            };
+        })
+        .catch((error) => {
+            console.error("Error during service worker registration:", error);
+        });
+}
+
+function checkValidServiceWorker(swUrl, config) {
+    // Check if the service worker can be found. If it can't reload the page.
+    fetch(swUrl, {
+        headers: { "Service-Worker": "script" },
+    })
+        .then((response) => {
+            // Ensure service worker exists, and that we really are getting a JS file.
+            const contentType = response.headers.get("content-type");
+            if (response.status === 404 || (contentType != null && contentType.indexOf("javascript") === -1)) {
+                // No service worker found. Probably a different app. Reload the page.
+                navigator.serviceWorker.ready.then((registration) => {
+                    registration.unregister().then(() => {
+                        window.location.reload();
+                    });
+                });
+            } else {
+                // Service worker found. Proceed as normal.
+                registerValidSW(swUrl, config);
+            }
+        })
+        .catch(() => {
+            console.log("No internet connection found. App is running in offline mode.");
+        });
+}
+
+export function unregister() {
+    if ("serviceWorker" in navigator) {
+        navigator.serviceWorker.ready
+            .then((registration) => {
+                registration.unregister();
+            })
+            .catch((error) => {
+                console.error(error.message);
+            });
+    }
+}