Hash-based routing (#1198)

## Description:

Implement hash-based routing.

Fixes #1111

## Please complete the following:

- [x] I have added screenshots for all UI updates
- [x] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [x] I have added relevant tests to the test directory
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced
- [x] I understand that submitting code with bugs that could have been
caught through manual testing blocks releases and new features for all
contributors

---------

Co-authored-by: Scott Anderson <662325+scottanderson@users.noreply.github.com>

src/client/HostLobbyModal.ts

@@ -538,7 +538,7 @@ export class HostLobbyModal extends LitElement {
     try {
       //TODO: Convert id to url and copy
       await navigator.clipboard.writeText(
-        `${location.origin}/join/${this.lobbyId}`,
+        `${location.origin}#join=${this.lobbyId}`,
       );
       this.copySuccess = true;
       setTimeout(() => {

src/client/Main.ts

@@ -1,6 +1,5 @@
-import page from "page";
 import favicon from "../../resources/images/Favicon.svg";
-import { GameRecord, GameStartInfo } from "../core/Schemas";
+import { GameRecord, GameStartInfo, ID } from "../core/Schemas";
 import { getServerConfigFromClient } from "../core/configuration/ConfigLoader";
 import { GameType } from "../core/game/Game";
 import { UserSettings } from "../core/game/UserSettings";
@@ -247,20 +246,25 @@ class Client {
     } else {
       document.documentElement.classList.remove("dark");
     }
-    page("/join/:lobbyId", (ctx) => {
-      if (ctx.init && sessionStorage.getItem("inLobby")) {
-        // On page reload, go back home
-        page("/");
-        return;
+
+    // Attempt to join lobby
+    this.handleHash();
+
+    const onHashUpdate = () => {
+      // Reset the UI to its initial state
+      this.joinModal.close();
+      if (this.gameStop !== null) {
+        this.handleLeaveLobby();
       }
-      const lobbyId = ctx.params.lobbyId;
 
-      this.joinModal.open(lobbyId);
+      // Attempt to join lobby
+      this.handleHash();
+    };
 
-      console.log(`joining lobby ${lobbyId}`);
-    });
+    // Handle browser navigation & manual hash edits
+    window.addEventListener("popstate", onHashUpdate);
+    window.addEventListener("hashchange", onHashUpdate);
 
-    page();
     function updateSliderProgress(slider) {
       const percent =
         ((slider.value - slider.min) / (slider.max - slider.min)) * 100;
@@ -275,6 +279,18 @@ class Client {
       });
   }
 
+  private handleHash() {
+    const { hash } = window.location;
+    if (hash.startsWith("#")) {
+      const params = new URLSearchParams(hash.slice(1));
+      const lobbyId = params.get("join");
+      if (lobbyId && ID.safeParse(lobbyId).success) {
+        this.joinModal.open(lobbyId);
+        console.log(`joining lobby ${lobbyId}`);
+      }
+    }
+  }
+
   private async handleJoinLobby(event: CustomEvent) {
     const lobby = event.detail as JoinLobbyEvent;
     console.log(`joining lobby ${lobby.gameID}`);
@@ -343,8 +359,7 @@ class Client {
         });
 
         if (event.detail.gameConfig?.gameType !== GameType.Singleplayer) {
-          window.history.pushState({}, "", `/join/${lobby.gameID}`);
-          sessionStorage.setItem("inLobby", "true");
+          history.pushState(null, "", `#join=${lobby.gameID}`);
         }
       },
     );

src/client/jwt.ts

@@ -28,12 +28,16 @@ function getToken(): string | null {
     const token = params.get("token");
     if (token) {
       localStorage.setItem("token", token);
+      params.delete("token");
+      params.toString();
     }
     // Clean the URL
     history.replaceState(
       null,
       "",
-      window.location.pathname + window.location.search,
+      window.location.pathname +
+        window.location.search +
+        (params.size > 0 ? "#" + params.toString() : ""),
     );
   }
   return localStorage.getItem("token");

src/core/Schemas.ts

@@ -161,7 +161,7 @@ const EmojiSchema = z
   .number()
   .nonnegative()
   .max(flattenedEmojiTable.length - 1);
-const ID = z
+export const ID = z
   .string()
   .regex(/^[a-zA-Z0-9]+$/)
   .length(8);