feat: add pwa capabilities

app/entry.worker.tsx

@@ -0,0 +1,210 @@
+/// <reference lib="WebWorker" />
+
+import { json } from "@remix-run/server-runtime";
+
+export type {};
+declare let self: ServiceWorkerGlobalScope;
+
+let STATIC_ASSETS = ["/build/", "/icons/"];
+
+let ASSET_CACHE = "asset-cache";
+let DATA_CACHE = "data-cache";
+let DOCUMENT_CACHE = "document-cache";
+
+function debug(...messages: any[]) {
+  if (process.env.NODE_ENV === "development") {
+    console.debug(...messages);
+  }
+}
+
+async function handleInstall(event: ExtendableEvent) {
+  debug("Service worker installed");
+}
+
+async function handleActivate(event: ExtendableEvent) {
+  debug("Service worker activated");
+}
+
+async function handleMessage(event: ExtendableMessageEvent) {
+  let cachePromises: Map<string, Promise<void>> = new Map();
+
+  if (event.data.type === "REMIX_NAVIGATION") {
+    let { isMount, location, matches, manifest } = event.data;
+    let documentUrl = location.pathname + location.search + location.hash;
+
+    let [dataCache, documentCache, existingDocument] = await Promise.all([
+      caches.open(DATA_CACHE),
+      caches.open(DOCUMENT_CACHE),
+      caches.match(documentUrl),
+    ]);
+
+    if (!existingDocument || !isMount) {
+      debug("Caching document for", documentUrl);
+      cachePromises.set(
+        documentUrl,
+        documentCache.add(documentUrl).catch((error) => {
+          debug(`Failed to cache document for ${documentUrl}:`, error);
+        })
+      );
+    }
+
+    if (isMount) {
+      for (let match of matches) {
+        if (manifest.routes[match.id].hasLoader) {
+          let params = new URLSearchParams(location.search);
+          params.set("_data", match.id);
+          let search = params.toString();
+          search = search ? `?${search}` : "";
+          let url = location.pathname + search + location.hash;
+          if (!cachePromises.has(url)) {
+            debug("Caching data for", url);
+            cachePromises.set(
+              url,
+              dataCache.add(url).catch((error) => {
+                debug(`Failed to cache data for ${url}:`, error);
+              })
+            );
+          }
+        }
+      }
+    }
+  }
+
+  await Promise.all(cachePromises.values());
+}
+
+async function handleFetch(event: FetchEvent): Promise<Response> {
+  let url = new URL(event.request.url);
+
+  if (isAssetRequest(event.request)) {
+    let cached = await caches.match(event.request, {
+      cacheName: ASSET_CACHE,
+      ignoreVary: true,
+      ignoreSearch: true,
+    });
+    if (cached) {
+      debug("Serving asset from cache", url.pathname);
+      return cached;
+    }
+
+    debug("Serving asset from network", url.pathname);
+    let response = await fetch(event.request);
+    if (response.status === 200) {
+      let cache = await caches.open(ASSET_CACHE);
+      await cache.put(event.request, response.clone());
+    }
+    return response;
+  }
+
+  if (isLoaderRequest(event.request)) {
+    try {
+      debug("Serving data from network", url.pathname + url.search);
+      let response = await fetch(event.request.clone());
+      let cache = await caches.open(DATA_CACHE);
+      await cache.put(event.request, response.clone());
+      return response;
+    } catch (error) {
+      debug(
+        "Serving data from network failed, falling back to cache",
+        url.pathname + url.search
+      );
+      let response = await caches.match(event.request);
+      if (response) {
+        response.headers.set("X-Remix-Worker", "yes");
+        return response;
+      }
+
+      return json(
+        { message: "Network Error" },
+        {
+          status: 500,
+          headers: { "X-Remix-Catch": "yes", "X-Remix-Worker": "yes" },
+        }
+      );
+    }
+  }
+
+  if (isDocumentGetRequest(event.request)) {
+    try {
+      debug("Serving document from network", url.pathname);
+      let response = await fetch(event.request);
+      let cache = await caches.open(DOCUMENT_CACHE);
+      await cache.put(event.request, response.clone());
+      return response;
+    } catch (error) {
+      debug(
+        "Serving document from network failed, falling back to cache",
+        url.pathname
+      );
+      let response = await caches.match(event.request);
+      if (response) {
+        return response;
+      }
+      throw error;
+    }
+  }
+
+  return fetch(event.request.clone());
+}
+
+function isMethod(request: Request, methods: string[]) {
+  return methods.includes(request.method.toLowerCase());
+}
+
+function isAssetRequest(request: Request) {
+  return (
+    isMethod(request, ["get"]) &&
+    STATIC_ASSETS.some((publicPath) => request.url.startsWith(publicPath))
+  );
+}
+
+function isLoaderRequest(request: Request) {
+  let url = new URL(request.url);
+  return isMethod(request, ["get"]) && url.searchParams.get("_data");
+}
+
+function isDocumentGetRequest(request: Request) {
+  return isMethod(request, ["get"]) && request.mode === "navigate";
+}
+
+self.addEventListener("install", (event) => {
+  event.waitUntil(handleInstall(event).then(() => self.skipWaiting()));
+});
+
+self.addEventListener("activate", (event) => {
+  event.waitUntil(handleActivate(event).then(() => self.clients.claim()));
+});
+
+self.addEventListener("message", (event) => {
+  event.waitUntil(handleMessage(event));
+});
+
+self.addEventListener("fetch", (event) => {
+  event.respondWith(
+    (async () => {
+      let result = {} as
+        | { error: unknown; response: undefined }
+        | { error: undefined; response: Response };
+      try {
+        result.response = await handleFetch(event);
+      } catch (error) {
+        result.error = error;
+      }
+
+      return appHandleFetch(event, result);
+    })()
+  );
+});
+
+async function appHandleFetch(
+  event: FetchEvent,
+  {
+    error,
+    response,
+  }:
+    | { error: unknown; response: undefined }
+    | { error: undefined; response: Response }
+): Promise<Response> {
+  return response;
+}
+

app/root.tsx

@@ -1,3 +1,5 @@
+import { useEffect } from "react";
+import type { ReactNode } from "react";
 import {
   LinksFunction,
   LoaderFunction,
@@ -5,7 +7,17 @@ import {
   useLoaderData,
 } from "remix";
 import type { User, Team } from "@prisma/client";
-import { Links, LiveReload, Outlet, useCatch, Meta, Scripts } from "remix";
+import {
+  Links,
+  LiveReload,
+  Outlet,
+  useCatch,
+  Meta,
+  Scripts,
+  ScrollRestoration,
+  useLocation,
+  useMatches,
+} from "remix";
 import { getUser } from "./utils/session.server";
 
 import styles from "./tailwind.css";
@@ -44,29 +56,94 @@ export const loader: LoaderFunction = async ({ request }) => {
   return data;
 };
 
+let isMount = true;
+
 function Document({
   children,
   title = `Explit`,
 }: {
-  children: React.ReactNode;
+  children: ReactNode;
   title?: string;
 }) {
   const data = useLoaderData<LoaderData>();
 
+  let location = useLocation();
+  let matches = useMatches();
+
+  useEffect(() => {
+    let mounted = isMount;
+    isMount = false;
+    if ("serviceWorker" in navigator) {
+      if (navigator.serviceWorker.controller) {
+        navigator.serviceWorker.controller?.postMessage({
+          type: "REMIX_NAVIGATION",
+          isMount: mounted,
+          location,
+          matches,
+          manifest: window.__remixManifest,
+        });
+      } else {
+        let listener = async () => {
+          await navigator.serviceWorker.ready;
+          navigator.serviceWorker.controller?.postMessage({
+            type: "REMIX_NAVIGATION",
+            isMount: mounted,
+            location,
+            matches,
+            manifest: window.__remixManifest,
+          });
+        };
+        navigator.serviceWorker.addEventListener("controllerchange", listener);
+        return () => {
+          navigator.serviceWorker.removeEventListener(
+            "controllerchange",
+            listener
+          );
+        };
+      }
+    }
+  }, [location]);
+
   return (
     <html lang="en" data-theme={data?.user?.theme ?? "dark"}>
       <head>
         <meta charSet="utf-8" />
-        <meta
-          name="viewport"
-          content="width=device-width, initial-scale=1"
-        ></meta>
+        <meta name="viewport" content="width=device-width, initial-scale=1" />
+        <meta name="theme-color" content="#793ef9" />
         <Meta />
         <title>{title}</title>
+
+        <link rel="manifest" href="/resources/manifest.json" />
+
+        <link rel="shortcut icon" href="/favicon.ico" type="image/x-icon" />
+        <link
+          rel="apple-touch-icon"
+          sizes="180x180"
+          href="/icons/apple-icon.png"
+        />
+        <link
+          rel="icon"
+          type="image/png"
+          sizes="192x192"
+          href="/icons/android-chrome-192x192.png"
+        />
+        <link
+          rel="icon"
+          type="image/png"
+          sizes="32x32"
+          href="/icons/favicon-32x32.png"
+        />
+        <link
+          rel="icon"
+          type="image/png"
+          sizes="16x16"
+          href="/icons/favicon-16x16.png"
+        />
         <Links />
       </head>
       <body className="bg-base-300 m-0 min-h-screen p-3">
         {children}
+        <ScrollRestoration />
         <Scripts />
         {process.env.NODE_ENV === "development" ? <LiveReload /> : null}
       </body>

app/routes/expenses/index.tsx

@@ -66,8 +66,6 @@ export const loader: LoaderFunction = async ({ request }) => {
     ...userData,
     dueAmount: avgPerUser - userData.spent,
   }));
-  console.log("totalExpenses", totalExpenses);
-  console.log("expensesByUser", expensesByUser);
 
   const data: LoaderData = {
     lastExpenses,
@@ -128,7 +126,7 @@ export default function ExpensesIndexRoute() {
           <h2 className="card-title">Who needs to pay who</h2>
           <div className="w-full shadow stats grid-cols-2 grid-flow-row-dense">
             {data.teamCounts?.map((user) => (
-              <div className="stat col-span-1">
+              <div className="stat col-span-1" key={user.id}>
                 <div className="stat-figure text-info">
                   <div className="rounded-full shrink-0 w-4 sm:w-10 h-4 sm:h-10 inline-flex justify-center items-center bg-white text-3xl">
                     {user.icon ?? user.username[0]}

app/routes/resources/manifest[.]json.ts

@@ -0,0 +1,57 @@
+import { json } from "remix";
+import type { LoaderFunction } from "remix";
+
+export let loader: LoaderFunction = () => {
+  return json(
+    {
+      short_name: "Explit",
+      name: "Explit | Track and split shared expenses with friends and family.",
+      start_url: "/",
+      display: "standalone",
+      background_color: "#22252d",
+      theme_color: "#793ef9",
+      icons: [
+        {
+          src: "/icons/favicon-32x32.png",
+          sizes: "32x32",
+          type: "image/png",
+          density: "0.75",
+        },
+        {
+          src: "/icons/android-icon-48x48.png",
+          sizes: "48x48",
+          type: "image/png",
+          density: "1.0",
+        },
+        {
+          src: "/icons/mstile-70x70.png",
+          sizes: "70x70",
+          type: "image/png",
+          density: "1.5",
+        },
+        {
+          src: "/icons/mstile-144x144.png",
+          sizes: "144x144",
+          type: "image/png",
+          density: "3.0",
+        },
+        {
+          src: "/icons/android-chrome-192x192.png",
+          sizes: "192x192",
+          type: "image/png",
+          density: "4.0",
+        },
+        {
+          src: "/icons/android-chrome-512x512.png",
+          sizes: "512x512",
+          type: "image/png",
+        },
+      ],
+    },
+    {
+      headers: {
+        "Cache-Control": "public, max-age=600",
+      },
+    }
+  );
+};

package.json

@@ -8,7 +8,9 @@
   "scripts": {
     "build": "npm run build:css && remix build",
     "build:css": "tailwindcss -o ./app/tailwind.css",
-    "dev": "concurrently \"npm run dev:css\" \"remix dev\"",
+    "build:worker": "esbuild ./app/entry.worker.ts --outfile=./public/entry.worker.js --minify --bundle --format=esm --define:process.env.NODE_ENV='\"production\"'",
+    "dev": "concurrently \"npm run dev:css\" \"npm run dev:worker\" \"remix dev\"",
+    "dev:worker": "esbuild ./app/entry.worker.ts --outfile=./public/entry.worker.js --bundle --format=esm --define:process.env.NODE_ENV='\"development\"' --watch",
     "dev:css": "tailwindcss -o ./app/tailwind.css --watch",
     "postinstall": "remix setup node",
     "prepare": "husky install",

public/browserconfig.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<browserconfig>
+    <msapplication>
+        <tile>
+            <square150x150logo src="/mstile-150x150.png"/>
+            <TileColor>#da532c</TileColor>
+        </tile>
+    </msapplication>
+</browserconfig>

public/icons/safari-pinned-tab.svg

@@ -0,0 +1,40 @@
+<?xml version="1.0" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20010904//EN"
+ "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
+<svg version="1.0" xmlns="http://www.w3.org/2000/svg"
+ width="700.000000pt" height="700.000000pt" viewBox="0 0 700.000000 700.000000"
+ preserveAspectRatio="xMidYMid meet">
+<metadata>
+Created by potrace 1.14, written by Peter Selinger 2001-2017
+</metadata>
+<g transform="translate(0.000000,700.000000) scale(0.100000,-0.100000)"
+fill="#000000" stroke="none">
+<path d="M1170 6985 c-401 -68 -748 -301 -968 -650 -70 -113 -139 -284 -179
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+<path d="M2261 5105 c-151 -33 -258 -110 -316 -229 -68 -137 -65 -65 -65
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+</g>
+</svg>

public/site.webmanifest

@@ -0,0 +1,19 @@
+{
+    "name": "",
+    "short_name": "",
+    "icons": [
+        {
+            "src": "/android-chrome-192x192.png",
+            "sizes": "192x192",
+            "type": "image/png"
+        },
+        {
+            "src": "/android-chrome-512x512.png",
+            "sizes": "512x512",
+            "type": "image/png"
+        }
+    ],
+    "theme_color": "#ffffff",
+    "background_color": "#ffffff",
+    "display": "standalone"
+}