add pong container who serve as server for multiplayer

pong/.eslintrc.js

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+module.exports = {
+  parser: '@typescript-eslint/parser',
+  parserOptions: {
+    project: 'tsconfig.json',
+    tsconfigRootDir: __dirname,
+    sourceType: 'module',
+  },
+  plugins: ['@typescript-eslint/eslint-plugin'],
+  extends: [
+    'plugin:@typescript-eslint/recommended',
+    'plugin:prettier/recommended',
+  ],
+  root: true,
+  env: {
+    node: true,
+    jest: true,
+  },
+  ignorePatterns: ['.eslintrc.js'],
+  rules: {
+    '@typescript-eslint/interface-name-prefix': 'off',
+    '@typescript-eslint/explicit-function-return-type': 'off',
+    '@typescript-eslint/explicit-module-boundary-types': 'off',
+    '@typescript-eslint/no-explicit-any': 'off',
+  },
+};

pong/.prettierrc

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+{
+  "singleQuote": true,
+  "trailingComma": "all"
+}

pong/README.md

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+<p align="center">
+  <a href="http://nestjs.com/" target="blank"><img src="https://nestjs.com/img/logo-small.svg" width="200" alt="Nest Logo" /></a>
+</p>
+
+[circleci-image]: https://img.shields.io/circleci/build/github/nestjs/nest/master?token=abc123def456
+[circleci-url]: https://circleci.com/gh/nestjs/nest
+
+  <p align="center">A progressive <a href="http://nodejs.org" target="_blank">Node.js</a> framework for building efficient and scalable server-side applications.</p>
+    <p align="center">
+<a href="https://www.npmjs.com/~nestjscore" target="_blank"><img src="https://img.shields.io/npm/v/@nestjs/core.svg" alt="NPM Version" /></a>
+<a href="https://www.npmjs.com/~nestjscore" target="_blank"><img src="https://img.shields.io/npm/l/@nestjs/core.svg" alt="Package License" /></a>
+<a href="https://www.npmjs.com/~nestjscore" target="_blank"><img src="https://img.shields.io/npm/dm/@nestjs/common.svg" alt="NPM Downloads" /></a>
+<a href="https://circleci.com/gh/nestjs/nest" target="_blank"><img src="https://img.shields.io/circleci/build/github/nestjs/nest/master" alt="CircleCI" /></a>
+<a href="https://coveralls.io/github/nestjs/nest?branch=master" target="_blank"><img src="https://coveralls.io/repos/github/nestjs/nest/badge.svg?branch=master#9" alt="Coverage" /></a>
+<a href="https://discord.gg/G7Qnnhy" target="_blank"><img src="https://img.shields.io/badge/discord-online-brightgreen.svg" alt="Discord"/></a>
+<a href="https://opencollective.com/nest#backer" target="_blank"><img src="https://opencollective.com/nest/backers/badge.svg" alt="Backers on Open Collective" /></a>
+<a href="https://opencollective.com/nest#sponsor" target="_blank"><img src="https://opencollective.com/nest/sponsors/badge.svg" alt="Sponsors on Open Collective" /></a>
+  <a href="https://paypal.me/kamilmysliwiec" target="_blank"><img src="https://img.shields.io/badge/Donate-PayPal-ff3f59.svg"/></a>
+    <a href="https://opencollective.com/nest#sponsor"  target="_blank"><img src="https://img.shields.io/badge/Support%20us-Open%20Collective-41B883.svg" alt="Support us"></a>
+  <a href="https://twitter.com/nestframework" target="_blank"><img src="https://img.shields.io/twitter/follow/nestframework.svg?style=social&label=Follow"></a>
+</p>
+  <!--[![Backers on Open Collective](https://opencollective.com/nest/backers/badge.svg)](https://opencollective.com/nest#backer)
+  [![Sponsors on Open Collective](https://opencollective.com/nest/sponsors/badge.svg)](https://opencollective.com/nest#sponsor)-->
+
+## Description
+
+[Nest](https://github.com/nestjs/nest) framework TypeScript starter repository.
+
+## Installation
+
+```bash
+$ npm install
+```
+
+## Running the app
+
+```bash
+# development
+$ npm run start
+
+# watch mode
+$ npm run start:dev
+
+# production mode
+$ npm run start:prod
+```
+
+## Test
+
+```bash
+# unit tests
+$ npm run test
+
+# e2e tests
+$ npm run test:e2e
+
+# test coverage
+$ npm run test:cov
+```
+
+## Support
+
+Nest is an MIT-licensed open source project. It can grow thanks to the sponsors and support by the amazing backers. If you'd like to join them, please [read more here](https://docs.nestjs.com/support).
+
+## Stay in touch
+
+- Author - [Kamil Myśliwiec](https://kamilmysliwiec.com)
+- Website - [https://nestjs.com](https://nestjs.com/)
+- Twitter - [@nestframework](https://twitter.com/nestframework)
+
+## License
+
+Nest is [MIT licensed](LICENSE).

pong/nest-cli.json

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+{
+  "$schema": "https://json.schemastore.org/nest-cli",
+  "collection": "@nestjs/schematics",
+  "sourceRoot": "src",
+  "compilerOptions": {
+    "deleteOutDir": true
+  }
+}

pong/package.json

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+{
+  "name": "pong",
+  "version": "0.0.1",
+  "description": "",
+  "author": "",
+  "private": true,
+  "license": "UNLICENSED",
+  "scripts": {
+    "build": "nest build",
+    "format": "prettier --write \"src/**/*.ts\" \"test/**/*.ts\"",
+    "start": "nest start",
+    "start:dev": "nest start --watch",
+    "start:debug": "nest start --debug --watch",
+    "start:prod": "node dist/main",
+    "lint": "eslint \"{src,apps,libs,test}/**/*.ts\" --fix",
+    "test": "jest",
+    "test:watch": "jest --watch",
+    "test:cov": "jest --coverage",
+    "test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/.bin/jest --runInBand",
+    "test:e2e": "jest --config ./test/jest-e2e.json"
+  },
+  "dependencies": {
+    "@nestjs/common": "^9.0.0",
+    "@nestjs/core": "^9.0.0",
+    "@nestjs/platform-express": "^9.0.0",
+    "@nestjs/platform-socket.io": "^9.4.0",
+    "@nestjs/websockets": "^9.4.0",
+    "cors": "^2.8.5",
+    "reflect-metadata": "^0.1.13",
+    "rxjs": "^7.2.0",
+    "socket.io-client": "^4.6.1",
+    "uuid": "^9.0.0"
+  },
+  "devDependencies": {
+    "@nestjs/cli": "^9.0.0",
+    "@nestjs/schematics": "^9.0.0",
+    "@nestjs/testing": "^9.0.0",
+    "@types/express": "^4.17.13",
+    "@types/jest": "29.5.0",
+    "@types/node": "18.15.11",
+    "@types/supertest": "^2.0.11",
+    "@typescript-eslint/eslint-plugin": "^5.0.0",
+    "@typescript-eslint/parser": "^5.0.0",
+    "eslint": "^8.0.1",
+    "eslint-config-prettier": "^8.3.0",
+    "eslint-plugin-prettier": "^4.0.0",
+    "jest": "29.5.0",
+    "prettier": "^2.3.2",
+    "source-map-support": "^0.5.20",
+    "supertest": "^6.1.3",
+    "ts-jest": "29.0.5",
+    "ts-loader": "^9.2.3",
+    "ts-node": "^10.0.0",
+    "tsconfig-paths": "4.2.0",
+    "typescript": "^4.7.4"
+  },
+  "jest": {
+    "moduleFileExtensions": [
+      "js",
+      "json",
+      "ts"
+    ],
+    "rootDir": "src",
+    "testRegex": ".*\\.spec\\.ts$",
+    "transform": {
+      "^.+\\.(t|j)s$": "ts-jest"
+    },
+    "collectCoverageFrom": [
+      "**/*.(t|j)s"
+    ],
+    "coverageDirectory": "../coverage",
+    "testEnvironment": "node"
+  }
+}

pong/src/app.controller.spec.ts

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+import { Test, TestingModule } from '@nestjs/testing';
+import { AppController } from './app.controller';
+import { AppService } from './app.service';
+
+describe('AppController', () => {
+  let appController: AppController;
+
+  beforeEach(async () => {
+    const app: TestingModule = await Test.createTestingModule({
+      controllers: [AppController],
+      providers: [AppService],
+    }).compile();
+
+    appController = app.get<AppController>(AppController);
+  });
+
+  describe('root', () => {
+    it('should return "Hello World!"', () => {
+      expect(appController.getHello()).toBe('Hello World!');
+    });
+  });
+});

pong/src/app.controller.ts

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+import { Controller, Get } from '@nestjs/common';
+import { AppService } from './app.service';
+
+@Controller()
+export class AppController {
+  constructor(private readonly appService: AppService) {}
+
+  @Get()
+  getHello(): string {
+    return this.appService.getHello();
+  }
+}

pong/src/app.module.ts

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+import { Module } from '@nestjs/common';
+import { AppController } from './app.controller';
+import { AppService } from './app.service';
+import { PongGateway } from './pong/pong.gateway';
+
+@Module({
+  imports: [],
+  controllers: [AppController],
+  providers: [AppService, PongGateway],
+})
+export class AppModule {}

pong/src/app.service.ts

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+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class AppService {
+  getHello(): string {
+    return 'Hello World!';
+  }
+}

pong/src/main.ts

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+// import { NestFactory } from '@nestjs/core';
+// import { AppModule } from './app.module';
+// import * as cors from 'cors';
+
+// async function bootstrap() {
+//   const app = await NestFactory.create(AppModule);
+
+//   app.enableCors({
+// 	origin: 'http://localhost:8080',
+// 	methods: ['GET', 'POST', 'PUT', 'DELETE', 'OPTIONS'],
+// 	allowedHeaders: ['Content-Type', 'Authorization'],
+// 	credentials: true,
+//   });
+
+//   await app.listen(3000);
+// }
+// bootstrap();
+
+import { NestFactory } from '@nestjs/core';
+import { AppModule } from './app.module';
+import * as cors from 'cors';
+import { Server } from 'socket.io';
+import * as socketio from 'socket.io';
+
+async function bootstrap() {
+	const app = await NestFactory.create(AppModule, {
+	cors: {
+	  origin: '*',
+	  methods: '*',
+	//   preflightContinue: false,
+	//   optionsSuccessStatus: 204,
+	//   credentials: true,
+	  allowedHeaders: '*',
+	},
+  });
+// const app = await NestFactory.create(AppModule);
+
+  const httpServer = app.getHttpServer();
+  const io = new socketio.Server(httpServer);
+
+  io.on('connection', (socket) => {
+	console.log('Client connected:', socket.id);
+  
+	// Gestion des événements personnalisés ici
+	socket.on('customEvent', (data) => {
+	  console.log('Custom event received:', data);
+  
+	  // Exemple de réponse à un événement personnalisé
+	  socket.emit('customEventResponse', { message: 'Event processed.' });
+	});
+  
+	socket.on('disconnect', () => {
+	  console.log('Client disconnected:', socket.id);
+	});
+  });
+
+  await app.listen(4000);
+}
+
+bootstrap();

pong/src/pong/pong.gateway.spec.ts

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+import { Test, TestingModule } from '@nestjs/testing';
+import { PongGateway } from './pong.gateway';
+
+describe('PongGateway', () => {
+  let gateway: PongGateway;
+
+  beforeEach(async () => {
+    const module: TestingModule = await Test.createTestingModule({
+      providers: [PongGateway],
+    }).compile();
+
+    gateway = module.get<PongGateway>(PongGateway);
+  });
+
+  it('should be defined', () => {
+    expect(gateway).toBeDefined();
+  });
+});

pong/src/pong/pong.gateway.ts

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+import { SubscribeMessage, WebSocketGateway, OnGatewayInit, WebSocketServer, OnGatewayConnection, OnGatewayDisconnect } from '@nestjs/websockets';
+import { Server, Socket } from 'socket.io';
+import { v4 as uuidv4 } from 'uuid';
+
+@WebSocketGateway({ cors: true })
+export class PongGateway implements OnGatewayInit, OnGatewayConnection, OnGatewayDisconnect {
+	@WebSocketServer() server: Server;
+
+	private clients: Record<string, Socket> = {};
+
+	afterInit(server: Server)
+	{
+		console.log('PongGateway initialized');
+	}
+
+	handleConnection(client: Socket, ...args: any[])
+	{
+		console.log(`Client connected: ${client.id}`);
+
+		const clientId = uuidv4();
+    	this.clients[clientId] = client;
+		client.emit('pong:clientId', clientId);
+
+		console.log(`Total connected clients: ${Object.keys(this.clients).length}`);
+	}
+
+	handleDisconnect(client: Socket)
+	{
+		console.log(`Client disconnected: ${client.id}`);
+
+		const disconnectedClientId = Object.keys(this.clients).find(clientId => this.clients[clientId] === client);
+		if (disconnectedClientId)
+		{
+			delete this.clients[disconnectedClientId];
+			console.log(`Client disconnected: ${disconnectedClientId}`);
+			console.log(`Total connected clients: ${Object.keys(this.clients).length}`);
+		}
+
+		// console.log(`Total connected clients: ${this.clients.size}`);
+	}
+
+	@SubscribeMessage('pong:message')
+	handleMessage(client: Socket, payload: any): void
+	{
+		console.log(`from: ${client.id}`);
+		console.log(payload);
+		
+		if (Object.keys(this.clients).length === 2)
+		{
+			const clientIds = Object.keys(this.clients);
+			console.log(`id of 0= ${clientIds[0]}`);
+			
+			// payload.ballX
+			// payload.ballY
+			// payload.
+			
+			if (clientIds[0] === payload.id)
+			{
+				// console.log("client 0 true");
+				if (payload.ballX <= payload.width / 2)
+					this.clients[clientIds[1]].emit('pong:info', payload);
+			}
+			else if (clientIds[1] === payload.id)
+			{
+				if (payload.ballX < payload.width / 2)
+					this.clients[clientIds[0]].emit('pong:info', payload);
+				// console.log("client 0 true");
+			}
+		}
+		console.log("END OF HANDLE");
+	}
+
+	@SubscribeMessage('pong:forced')
+	forcedMessage(client: Socket, payload: any): void
+	{
+		console.log(`from: ${client.id}`);
+		console.log(payload);
+		
+		if (Object.keys(this.clients).length === 2)
+		{
+			const clientIds = Object.keys(this.clients);
+			console.log(`id of 0= ${clientIds[0]}`);
+			
+			// payload.ballX
+			// payload.ballY
+			// payload.
+			
+			if (clientIds[0] === payload.id)
+			{
+				// console.log("client 0 true");
+				// if (payload.ballX <= payload.width / 2)
+					this.clients[clientIds[1]].emit('pong:info', payload);
+			}
+			else if (clientIds[1] === payload.id)
+			{
+				// if (payload.ballX < payload.width / 2)
+					this.clients[clientIds[0]].emit('pong:info', payload);
+				// console.log("client 0 true");
+			}
+		}
+		console.log("END OF HANDLE");
+	}
+
+	@SubscribeMessage('pong:paddle')
+	handlePaddle(client: Socket, payload: any): void
+	{
+		console.log(`from: ${client.id}`);
+		console.log(payload);
+		
+		if (Object.keys(this.clients).length === 2)
+		{
+			const clientIds = Object.keys(this.clients);
+			console.log(`id of 0= ${clientIds[0]}`);
+
+			if (clientIds[0] === payload.id)
+			{
+				this.clients[clientIds[1]].emit('pong:paddle', payload);
+			}
+			else if (clientIds[1] === payload.id)
+			{
+				this.clients[clientIds[0]].emit('pong:paddle', payload);
+			}
+		}
+		console.log("END OF HANDLE");
+	}
+
+	@SubscribeMessage('pong:point')
+	handlePoint(client: Socket, payload: any): void
+	{
+		if (Object.keys(this.clients).length === 2)
+		{
+			const clientIds = Object.keys(this.clients);
+			console.log(`id of 0= ${clientIds[0]}`);
+
+			if (clientIds[0] === payload.id)
+			{
+				this.clients[clientIds[1]].emit('pong:point', payload);
+			}
+			else if (clientIds[1] === payload.id)
+			{
+				this.clients[clientIds[0]].emit('pong:point', payload);
+			}
+		}
+	}
+}

pong/test/app.e2e-spec.ts

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+import { Test, TestingModule } from '@nestjs/testing';
+import { INestApplication } from '@nestjs/common';
+import * as request from 'supertest';
+import { AppModule } from './../src/app.module';
+
+describe('AppController (e2e)', () => {
+  let app: INestApplication;
+
+  beforeEach(async () => {
+    const moduleFixture: TestingModule = await Test.createTestingModule({
+      imports: [AppModule],
+    }).compile();
+
+    app = moduleFixture.createNestApplication();
+    await app.init();
+  });
+
+  it('/ (GET)', () => {
+    return request(app.getHttpServer())
+      .get('/')
+      .expect(200)
+      .expect('Hello World!');
+  });
+});

pong/test/jest-e2e.json

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+{
+  "moduleFileExtensions": ["js", "json", "ts"],
+  "rootDir": ".",
+  "testEnvironment": "node",
+  "testRegex": ".e2e-spec.ts$",
+  "transform": {
+    "^.+\\.(t|j)s$": "ts-jest"
+  }
+}

pong/tsconfig.build.json

@@ -0,0 +1,4 @@
+{
+  "extends": "./tsconfig.json",
+  "exclude": ["node_modules", "test", "dist", "**/*spec.ts"]
+}

pong/tsconfig.json

@@ -0,0 +1,21 @@
+{
+  "compilerOptions": {
+    "module": "commonjs",
+    "declaration": true,
+    "removeComments": true,
+    "emitDecoratorMetadata": true,
+    "experimentalDecorators": true,
+    "allowSyntheticDefaultImports": true,
+    "target": "es2017",
+    "sourceMap": true,
+    "outDir": "./dist",
+    "baseUrl": "./",
+    "incremental": true,
+    "skipLibCheck": true,
+    "strictNullChecks": false,
+    "noImplicitAny": false,
+    "strictBindCallApply": false,
+    "forceConsistentCasingInFileNames": false,
+    "noFallthroughCasesInSwitch": false
+  }
+}