automatic rejoin on reload or server restart

TanksServer/Interactivity/AppSerializerContext.cs

@@ -5,4 +5,5 @@ namespace TanksServer.Interactivity;
 [JsonSerializable(typeof(Player))]
 [JsonSerializable(typeof(IEnumerable<Player>))]
 [JsonSerializable(typeof(Guid))]
+[JsonSerializable(typeof(NameId))]
 internal sealed partial class AppSerializerContext : JsonSerializerContext;

TanksServer/Program.cs

@@ -11,6 +11,8 @@ using TanksServer.Interactivity;
 
 namespace TanksServer;
 
+internal sealed record class NameId(string Name, Guid Id);
+
 public static class Program
 {
     public static void Main(string[] args)
@@ -29,7 +31,7 @@ public static class Program
         {
             var player = playerService.GetOrAdd(name, id);
             return player != null
-                ? Results.Ok(player.Id)
+                ? Results.Ok(new NameId(name, id))
                 : Results.Unauthorized();
         });
         app.MapGet("/player", ([FromQuery] Guid id) =>

tank-frontend/.env

@@ -1,7 +1,7 @@
-#VITE_TANK_SCREEN_URL=ws://172.23.43.79/screen
+TANK_DOMAIN=vinzenz-lpt2
-#VITE_TANK_CONTROLS_URL=ws://172.23.43.79/controls
+VITE_TANK_API=http://$TANK_DOMAIN
-#VITE_TANK_PLAYER_URL=http://172.23.43.79/player
+VITE_TANK_WS=ws://$TANK_DOMAIN
 
-VITE_TANK_SCREEN_URL=ws://vinzenz-lpt2/screen
+VITE_TANK_SCREEN_URL=$VITE_TANK_WS/screen
-VITE_TANK_CONTROLS_URL=ws://vinzenz-lpt2/controls
+VITE_TANK_CONTROLS_URL=$VITE_TANK_WS/controls
-VITE_TANK_PLAYER_URL=http://vinzenz-lpt2/player
+VITE_TANK_PLAYER_URL=$VITE_TANK_API/player

tank-frontend/src/ClientScreen.tsx

@@ -41,7 +41,7 @@ function drawPixelsToCanvas(pixels: Uint8Array, canvas: HTMLCanvasElement) {
     drawContext.putImageData(imageData, 0, 0);
 }
 
-export default function ClientScreen({}: {}) {
+export default function ClientScreen({logout}: {logout: () => void}) {
     const canvasRef = useRef<HTMLCanvasElement>(null);
 
     const {
@@ -50,7 +50,7 @@ export default function ClientScreen({}: {}) {
         sendMessage,
         getWebSocket
     } = useWebSocket(import.meta.env.VITE_TANK_SCREEN_URL, {
-        shouldReconnect: () => true,
+        onError: logout
     });
 
     const socket = getWebSocket();

tank-frontend/src/Controls.tsx

@@ -3,8 +3,9 @@ import useWebSocket from 'react-use-websocket';
 import {useEffect} from 'react';
 import {statusTextForReadyState} from './statusTextForReadyState.tsx';
 
-export default function Controls({playerId}: {
+export default function Controls({playerId, logout}: {
-    playerId: string
+    playerId: string,
+    logout: () => void
 }) {
     const url = new URL(import.meta.env.VITE_TANK_CONTROLS_URL);
     url.searchParams.set('playerId', playerId);
@@ -13,7 +14,7 @@ export default function Controls({playerId}: {
         getWebSocket,
         readyState
     } = useWebSocket(url.toString(), {
-        shouldReconnect: () => true,
+        onError: logout
     });
 
     const socket = getWebSocket();

tank-frontend/src/Guid.ts

@@ -0,0 +1,3 @@
+export type Guid = `${string}-${string}-${string}-${string}-${string}`;
+
+export const EmptyGuid: Guid = '00000000-0000-0000-0000-000000000000';

tank-frontend/src/JoinForm.tsx

@@ -1,8 +1,12 @@
 import {useEffect, useState} from 'react';
 import './JoinForm.css';
-import { PlayerResponse, postPlayer } from './serverCalls';
+import {NameId, PlayerResponse, postPlayer} from './serverCalls';
+import {Guid} from './Guid.ts';
 
-export default function JoinForm({ onDone }: { onDone: (id: string) => void }) {
+export default function JoinForm({setNameId, clientId}: {
+    setNameId: (mutator: (oldState: NameId) => NameId) => void,
+    clientId: Guid
+}) {
     const [name, setName] = useState('');
     const [clicked, setClicked] = useState(false);
     const [data, setData] = useState<PlayerResponse | null>(null);
@@ -12,10 +16,10 @@ export default function JoinForm({ onDone }: { onDone: (id: string) => void }) {
             return;
 
         try {
-            postPlayer(name)
+            postPlayer({name, id: clientId})
-                .then((value: PlayerResponse | null) => {
+                .then(value => {
                     if (value)
-                        onDone(value.id);
+                        setNameId(prev => ({...prev, ...value}));
                     else
                         setClicked(false);
                 });
@@ -23,22 +27,22 @@ export default function JoinForm({ onDone }: { onDone: (id: string) => void }) {
             console.log(e);
             alert(e);
         }
-    }, [clicked, setData, data]);
+    }, [clicked, setData, data, clientId, setClicked, setNameId]);
 
     const disableButtons = clicked || name.trim() === '';
-    return <div className='TankWelcome'>
+    return <div className="TankWelcome">
-        <h1 className='JoinElems' style={{ "color": "white" }}>
+        <h1 className="JoinElems" style={{'color': 'white'}}>
             Tanks
         </h1>
-        <p className='JoinElems' style={{ "color": "white" }}> Welcome and have fun!</p>
+        <p className="JoinElems" style={{'color': 'white'}}> Welcome and have fun!</p>
         <div className="JoinForm">
-            <p className='JoinElems' style={{ "color": "white" }}>
+            <p className="JoinElems" style={{'color': 'white'}}>
                 Enter your name to join the game!
             </p>
             <input className="JoinElems"
                    type="text"
                    value={name}
-                placeholder='player name'
+                   placeholder="player name"
                    onChange={e => setName(e.target.value)}
             />
             <button className="JoinElems"

tank-frontend/src/PlayerInfo.tsx

@@ -2,11 +2,16 @@ import { useEffect, useState } from 'react';
 import './PlayerInfo.css'
 import {PlayerResponse, getPlayer} from './serverCalls';
 
-export default function PlayerInfo({ playerId }: { playerId: string }) {
+export default function PlayerInfo({playerId, logout}: { playerId: string, logout: () => void }) {
     const [player, setPlayer] = useState<PlayerResponse | null>();
 
     const refresh = () => {
-        getPlayer(playerId).then(setPlayer);
+        getPlayer(playerId).then(value => {
+            if (value)
+                setPlayer(value);
+            else
+                logout();
+        });
     };
 
     useEffect(() => {
@@ -32,7 +37,7 @@ export default function PlayerInfo({ playerId }: { playerId: string }) {
                     kills:
                 </p>
                 <p className='Elems' style={{"color": "white"}}>
-                    {player?.kills}
+                    {player?.scores.kills}
                 </p>
             </div>
             <div className='ElemGroup'>
@@ -40,7 +45,7 @@ export default function PlayerInfo({ playerId }: { playerId: string }) {
                     deaths:
                 </p>
                 <p className='Elems' style={{"color": "white"}}>
-                    {player?.deaths}
+                    {player?.scores.deaths}
                 </p>
             </div>
         </div>

tank-frontend/src/index.tsx

@@ -1,19 +1,34 @@
-import React, { useState } from 'react';
+import React, {useCallback, useState} from 'react';
 import './index.css';
 import ClientScreen from './ClientScreen';
 import Controls from './Controls.tsx';
 import JoinForm from './JoinForm.tsx';
 import {createRoot} from 'react-dom/client';
 import PlayerInfo from './PlayerInfo.tsx';
+import {useStoredObjectState} from './useStoredState.ts';
+import {NameId, postPlayer} from './serverCalls.tsx';
 
 function App() {
-    const [id, setId] = useState<string | null>(null);
+    const [nameId, setNameId] = useStoredObjectState<NameId>('access', () => ({
+        id: crypto.randomUUID(),
+        name: ''
+    }));
+
+    const [isLoggedIn, setLoggedIn] = useState<boolean>(false);
+    const logout = () => setLoggedIn(false);
+
+    useCallback(async () => {
+        if (isLoggedIn)
+            return;
+        const result = await postPlayer(nameId);
+        setLoggedIn(result !== null);
+    }, [nameId, isLoggedIn])();
 
     return <>
-        {id === null && <JoinForm onDone={name => setId(name)} />}
+        {nameId.name === '' && <JoinForm setNameId={setNameId} clientId={nameId.id}/>}
-        {id == null || <PlayerInfo playerId={id} />}
+        {isLoggedIn && <PlayerInfo playerId={nameId.id} logout={logout}/>}
-        <ClientScreen />
+        <ClientScreen logout={logout}/>
-        {id == null || <Controls playerId={id} />}
+        {isLoggedIn && <Controls playerId={nameId.id} logout={logout}/>}
     </>;
 }
 

tank-frontend/src/serverCalls.tsx

@@ -1,9 +1,18 @@
+import {Guid} from './Guid.ts';
+
 export type PlayerResponse = {
     readonly name: string;
     readonly id: string;
+    readonly scores: {
         readonly kills: number;
         readonly deaths: number;
     };
+};
+
+export type NameId = {
+    name: string,
+    id: Guid
+};
 
 export async function fetchTyped<T>({url, method}: { url: URL; method: string; }) {
     const response = await fetch(url, {method});
@@ -12,14 +21,22 @@ export async function fetchTyped<T>({ url, method }: { url: URL; method: string;
     return await response.json() as T;
 }
 
-export function postPlayer(name: string) {
+export function postPlayer({name, id}: NameId) {
     const url = new URL(import.meta.env.VITE_TANK_PLAYER_URL);
     url.searchParams.set('name', name);
-    return fetchTyped<PlayerResponse>({ url, method: 'POST' });
+    url.searchParams.set('id', id);
+
+    return fetchTyped<NameId>({url, method: 'POST'});
 }
 
 export function getPlayer(id: string) {
     const url = new URL(import.meta.env.VITE_TANK_PLAYER_URL);
     url.searchParams.set('id', id);
+
     return fetchTyped<PlayerResponse>({url, method: 'GET'});
 }
+
+export function getScores() {
+    const url = new URL('/scores', import.meta.env.VITE_TANK_API);
+    return fetchTyped<PlayerResponse[]>({url, method: 'GET'});
+}

tank-frontend/src/useStoredState.ts

@@ -0,0 +1,35 @@
+import {useState} from 'react';
+
+export function useStoredState(storageKey: string, initialState: () => string): [string, ((newState: string) => void)] {
+    const [state, setState] = useState<string>(() => localStorage.getItem(storageKey) || initialState());
+
+    const setSavedState = (newState: string) => {
+        localStorage.setItem(storageKey, newState);
+        setState(newState);
+    };
+
+    return [state, setSavedState];
+}
+
+export function useStoredObjectState<T>(
+    storageKey: string,
+    initialState: () => T
+): [T, (mutator: (oldState: T) => T) => void] {
+    const getInitialState = () => {
+        const localStorageJson = localStorage.getItem(storageKey);
+        if (localStorageJson !== null && localStorageJson !== '') {
+            return JSON.parse(localStorageJson);
+        }
+
+        return initialState();
+    };
+
+    const [state, setState] = useState<T>(getInitialState);
+
+    const setSavedState = (mut: (oldState: T) => T) => {
+        localStorage.setItem(storageKey, JSON.stringify(mut(state)));
+        setState(mut);
+    };
+
+    return [state, setSavedState];
+}