Testing next.js

2021-04-29 20:56:25 -05:00 · 2021-04-29 20:56:25 -05:00 · 838b72c0f2
commit 838b72c0f2
parent f05649e9c1
35 changed files with 5124 additions and 0 deletions
--- a/back/nodemon.json
+++ b/back/nodemon.json
@ -0,0 +1,5 @@
+{
+	"ext": "js, ts, json",
+	"exec": "npm run dev2 || exit 1",
+	"ignore": ["dist/*"]
+}
--- a/back/package-lock.json
+++ b/back/package-lock.json
--- a/back/package.json
+++ b/back/package.json
@ -0,0 +1,26 @@
+{
+  "name": "big2-back",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "start": "node dist/index.js",
+    "build": "tsc",
+    "dev": "nodemon",
+    "dev2": "npm run build && npm start",
+    "preinstall": "cd ../core && npm i && npm run build"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "big2-core": "file:../core",
+    "dotenv": "^8.2.0",
+    "socket.io": "^3.1.1"
+  },
+  "devDependencies": {
+    "@types/node": "^14.14.28",
+    "@types/socket.io": "^2.1.13",
+    "nodemon": "^2.0.7",
+    "typescript": "^4.1.5"
+  }
+}
--- a/back/src/Client.ts
+++ b/back/src/Client.ts
@ -0,0 +1,56 @@
+import {Socket} from 'socket.io';
+
+import Room from './Room';
+
+export const clients = new Map();
+export const usernameToId = new Map();
+
+let newClientId = 0;
+
+export default class Client {
+	id: number;
+	username: string;
+	socket: Socket;
+	disconnectTimeout: NodeJS.Timeout | null = null;
+	room: Room | null = null;
+	onListeners = new Map();
+	onceListeners = new Map();
+	constructor(username: string, socket: Socket) {
+		this.id = newClientId++;
+		this.username = username;
+		this.socket = socket;
+	}
+	on(e: string, f: (...args: any[]) => void) {
+		if (!this.onListeners.has(e))
+			this.onListeners.set(e, []);
+		this.onListeners.get(e).push(f);
+		this.socket.on(e, f);
+	}
+	once(e: string, f: (...args: any[]) => void) {
+		if (!this.onceListeners.has(e))
+			this.onceListeners.set(e, []);
+		this.onceListeners.get(e).push(f);
+		this.socket.once(e, (...args) => {
+			this.onceListeners.get(e).splice(this.onceListeners.get(e).indexOf(f), 1);
+			f(...args);
+		});
+	}
+	removeAllListeners(e: string) {
+		this.socket.removeAllListeners(e);
+		this.onListeners.delete(e);
+		this.onceListeners.delete(e);
+	}
+	updateSocket(socket: Socket) {
+		this.socket = socket;
+		// Add listeners
+		this.onListeners.forEach((fs, e) => fs.forEach((f: (...args: any[]) => void) => socket.on(e, f)));
+		this.onceListeners.forEach((fs, e) => fs.forEach((f: (...args: any[]) => void) => {
+			socket.once(e, (...args) => {
+				this.onceListeners.get(e).splice(this.onceListeners.get(e).indexOf(f), 1);
+				f(...args);
+			});
+		}));
+		if (this.room)
+			this.room.updateSocket(this);
+	}
+}
--- a/back/src/Game.ts
+++ b/back/src/Game.ts
@ -0,0 +1,169 @@
+import {canPlay, Card, cmpCard, Suit} from 'big2-core';
+
+import Client from './Client';
+import logSocket from './logSocket';
+import Room from './Room';
+import server from './server';
+
+class Player {
+	game: Game;
+	client: Client;
+	cards: Card[] = [];
+	disconnected = false;
+	disconnectListener?: () => void;
+	rank = 0;
+	passed = false;
+	constructor(game: Game, client: Client) {
+		this.game = game;
+		this.client = client;
+	}
+	sendGameState() {
+		this.cards.sort(cmpCard);
+		const i = this.game.players.indexOf(this);
+		const otherPlayers = [];
+		for (let j = 1; j < this.game.players.length; ++j)
+			otherPlayers.push(this.game.players[(i + j) % this.game.players.length]);
+		this.client.socket.emit('gameState', {
+			cards: this.cards,
+			rank: this.rank,
+			passed: this.passed,
+			players: otherPlayers.map((p: Player) => ({
+				username: p.client.username,
+				numCards: p.cards.length,
+				rank: p.rank,
+				passed: p.passed
+			})),
+			lastPlayed: this.game.lastPlayed,
+			lastPlayedPlayer: this.game.lastPlayedPlayer < 0 ? null : this.game.players[this.game.lastPlayedPlayer].client.username,
+			playerTurn: this.game.players[this.game.playerTurn].client.username
+		});
+	}
+}
+
+export default class Game {
+	room: Room;
+	players: Player[] = [];
+	lastPlayed: Card[] | null = null;
+	lastPlayedPlayer = -1;
+	playerTurn = 0;
+	playersFinished = 0;
+	constructor(room: Room) {
+		this.room = room;
+		this.start();
+	}
+	async start() {
+		const cards = [];
+		for (let i = 1; i <= 13; ++i)
+			for (let j = 0; j < 4; ++j)
+				cards.push({rank: i, suit: j});
+		for (let i = 0; i < 52; ++i) {
+			const j = Math.floor(Math.random() * (i+1));
+			[cards[i], cards[j]] = [cards[j], cards[i]];
+		}
+		const handSize = Math.floor(52 / this.room.clients.length);
+		for (let i = 0; i < this.room.clients.length; ++i) {
+			this.players.push(new Player(this, this.room.clients[i]));
+			this.players[i].cards = cards.slice(i * handSize, (i + 1) * handSize);
+		}
+		const startingPlayer = this.players.find((p: Player) => p.cards.some(
+			(card: Card) => card.rank === 3 && card.suit === Suit.Clubs
+		)) || this.players[0];
+		if (this.room.clients.length === 3)
+			 startingPlayer.cards.push(cards[51]);
+		this.playerTurn = this.players.indexOf(startingPlayer);
+		while (true) {
+			// Check if game ended
+			const playersLeft: Player[] = [];
+			this.players.forEach((p: Player) => {
+				if (!p.rank && !p.disconnected)
+					playersLeft.push(p);
+			});
+			if (playersLeft.length < 2) {
+				if (playersLeft.length === 1)
+					playersLeft[0].rank = ++this.playersFinished;
+				break;
+			}
+			await this.round();
+		}
+		this.broadcastGameState();
+		setTimeout(() => {
+			server.to(this.room.name).emit('endGame');
+			this.room.host.once('startGame', () => this.room.startGame());
+			this.room.game = null;
+		}, 5000);
+	}
+	broadcastGameState() {
+		this.players.forEach((p: Player) => p.sendGameState());
+	}
+	async round() {
+		while (true) {
+			// Everyone passes
+			if (this.playerTurn === this.lastPlayedPlayer) break;
+			const p = this.players[this.playerTurn];
+			// Guy passes
+			if (p.rank || p.disconnected || p.passed) {
+				this.playerTurn = (this.playerTurn + 1) % this.players.length;
+				continue;
+			}
+			await this.turn();
+			this.playerTurn = (this.playerTurn + 1) % this.players.length;
+			// Check if person ends
+			if (p.rank)
+				break;
+		}
+		this.lastPlayed = null;
+		this.lastPlayedPlayer = -1;
+		this.players.forEach((p: Player) => p.passed = false);
+	}
+	async turn() {
+		const p = this.players[this.playerTurn];
+		if (p.passed) return;
+		this.broadcastGameState();
+		await new Promise<void>(resolve => {
+			p.client.once('turn', cards => {
+				delete p.disconnectListener;
+				(() => {
+					// Pass
+					if (cards === null) {
+						p.passed = true;
+						return;
+					}
+					// Play
+					if (cards && Array.isArray(cards) && cards.every((a: Card) => a && p.cards.some((b: Card) => !cmpCard(a, b))) && canPlay(this.lastPlayed, cards)) {
+						// Cards have to be ascending
+						let ok = true;
+						for (let i = 0; i + 1 < cards.length; ++i)
+							ok = ok && cmpCard(cards[i], cards[i + 1]) < 0;
+						if (ok) {
+							// Remove cards
+							p.cards = p.cards.filter((a: Card) => !cards.some((b: Card) => !cmpCard(a, b)));
+							// Check if won
+							if (!p.cards.length)
+								p.rank = ++this.playersFinished;
+							this.lastPlayed = cards;
+							this.lastPlayedPlayer = this.playerTurn;
+							return;
+						}
+					}
+					p.client.socket.disconnect();
+					logSocket(p.client.socket, 'Bad cards argument on turn');
+				})();
+				resolve();
+			});
+			p.disconnectListener = () => {
+				delete p.disconnectListener;
+				p.client.removeAllListeners('turn');
+				resolve();
+			};
+		});
+	}
+	updateSocket(client: Client) {
+		this.players.find((p: Player) => p.client === client)!.sendGameState();
+	}
+	remove(client: Client) {
+		const p = this.players.find((p: Player) => p.client === client)!;
+		p.disconnected = true;
+		if (p.disconnectListener)
+			p.disconnectListener();
+	}
+};
--- a/back/src/Room.ts
+++ b/back/src/Room.ts
@ -0,0 +1,74 @@
+import Client from './Client';
+import Game from './Game';
+import logSocket from './logSocket';
+import server from './server';
+
+export default class Room {
+	static rooms = new Map();
+	static get(name: string) {
+		return this.rooms.get(name);
+	}
+	name: string;
+	password: string;
+	clients: Client[] = [];
+	host: Client;
+	game: Game | null = null;
+	constructor(name: string, password: string, host: Client) {
+		this.name = name;
+		this.password = password;
+		this.host = host;
+		this.add(host);
+		host.once('startGame', () => this.startGame());
+		Room.rooms.set(name, this);
+	}
+	add(client: Client) {
+		this.clients.push(client);
+		client.room = this;
+		server.to(this.name).emit('roomUpdate', {
+			users: this.clients.map((client: Client) => client.username),
+			host: this.host.username
+		});
+		client.once('leaveRoom', () => this.remove(client));
+		this.updateSocket(client);
+	}
+	updateSocket(client: Client) {
+		client.socket.join(this.name);
+		client.socket.emit('joinRoom', {name: this.name});
+		client.socket.emit('roomUpdate', {
+			users: this.clients.map((client: Client) => client.username),
+			host: this.host.username
+		});
+		if (this.game)
+			this.game.updateSocket(client);
+	}
+	remove(client: Client) {
+		this.clients.splice(this.clients.indexOf(client), 1);
+		client.room = null;
+		client.socket.leave(this.name);
+		client.socket.emit('leaveRoom');
+		if (!this.clients.length) {
+			Room.rooms.delete(this.name);
+			return;
+		}
+		if (this.host === client) {
+			this.host.removeAllListeners('startGame');
+			this.host = this.clients[0];
+			if (!this.game)
+				this.host.once('startGame', () => this.startGame());
+		}
+		server.to(this.name).emit('roomUpdate', {
+			users: this.clients.map((client: Client) => client.username),
+			host: this.host.username
+		});
+		if (this.game)
+			this.game.remove(client);
+	}
+	startGame() {
+		if (this.clients.length < 3) {
+			this.host.socket.disconnect();
+			logSocket(this.host.socket, 'Not enough users for startGame');
+			return;
+		}
+		this.game = new Game(this);
+	}
+};
--- a/back/src/index.ts
+++ b/back/src/index.ts
@ -0,0 +1,155 @@
+import dotenv from 'dotenv';
+import {Socket} from 'socket.io';
+
+dotenv.config();
+
+import Client, {clients, usernameToId} from './Client';
+import logSocket from './logSocket';
+import Room from './Room';
+import server from './server';
+
+server.on('connection', (socket: Socket) => {
+	logSocket(socket, 'Connect');
+	let client: Client | null = null;
+
+	socket.on('login', username => {
+		logSocket(socket, `Login as ${username}`);
+		// Shouldn't login again???
+		if (client) {
+			socket.disconnect();
+			logSocket(socket, 'Already logged in');
+			return;
+		}
+		// Bad username argument
+		if (typeof username !== 'string' || username.length < 1 || username.length > 15) {
+			socket.disconnect();
+			logSocket(socket, 'Bad username argument on login');
+			return;
+		}
+		// Character filter
+		if (!username.match(/^[0-9a-zA-Z]+$/)) {
+			socket.emit('loginRes', {success: false, error: 'Username can only consist of alphanumeric characters'});
+			return;
+		}
+		if (usernameToId.has(username)) {
+			const client2 = clients.get(usernameToId.get(username)) as Client;
+			if(client2.socket.connected || client2.socket.handshake.address !== socket.handshake.address) {
+				socket.emit('loginRes', {success: false, error: 'Username taken'});
+				logSocket(socket, 'Username taken');
+				return;
+			}
+			client = client2;
+			clearTimeout(client.disconnectTimeout!);
+			// client.socket = socket;
+			client.updateSocket(socket);
+			socket.emit('loginRes', {success: true});
+			// if (client.room)
+				// client.room.updateSocket(client);
+			logSocket(socket, 'Reconnect login successful');
+		} else {
+			client = new Client(username, socket);
+			clients.set(client.id, client);
+			usernameToId.set(username, client.id);
+			socket.emit('loginRes', {success: true});
+			logSocket(socket, 'Login successful');
+
+			client.on('joinRoom', (name, password) => {
+				client = client as Client;
+				// Bad name argument
+				if (typeof name !== 'string' || name.length < 1 || name.length > 15) {
+					socket.disconnect();
+					logSocket(socket, 'Bad name argument on joinRoom');
+					return;
+				}
+				// Bad password argument
+				if (typeof password !== 'string' || password.length > 15) {
+					socket.disconnect();
+					logSocket(socket, 'Bad password argument on joinRoom');
+					return;
+				}
+				// Character filter
+				if (!name.match(/^[0-9a-zA-Z ]+$/)) {
+					socket.emit('joinRoomRes', {success: false, error: 'Room name can only consist of alphanumeric characters and spaces'});
+					return;
+				}
+				// Make sure not in room
+				if (client.room) {
+					socket.disconnect();
+					logSocket(socket, 'Already in room on joinRoom');
+					return;
+				}
+				// Make sure room exists
+				if (!Room.get(name)) {
+					socket.emit('joinRoomRes', {success: false, error: `Room "${name}" does not exist`});
+					return;
+				}
+				const room = Room.get(name);
+				// Make sure password is correct
+				if (password !== room.password) {
+					socket.emit('joinRoomRes', {success: false, error: 'Password is incorrect'});
+					return;
+				}
+				// Make sure game has not yet started
+				if (room.game) {
+					socket.emit('joinRoomRes', {success: false, error: 'The game has already started'});
+					return;
+				}
+				// Make sure room has space
+				if (room.clients.length > 3) {
+					socket.emit('joinRoomRes', {success: false, error: 'Room does not have enough space'});
+					return;
+				}
+				// Success
+				socket.emit('joinRoomRes', {success: true});
+				room.add(client);
+			});
+
+			client.on('createRoom', (name, password) => {
+				client = client as Client;
+				// Bad name argument
+				if (typeof name !== 'string' || name.length < 1 || name.length > 15) {
+					socket.disconnect();
+					logSocket(socket, 'Bad name argument on createRoom');
+					return;
+				}
+				// Bad password argument
+				if (typeof password !== 'string' || password.length > 15) {
+					socket.disconnect();
+					logSocket(socket, 'Bad password argument on createRoom');
+					return;
+				}
+				// Character filter
+				if (!name.match(/^[0-9a-zA-Z ]+$/)) {
+					socket.emit('createRoomRes', {success: false, error: 'Room name can only consist of alphanumeric characters and spaces'});
+					return;
+				}
+				// Make sure not in room
+				if (client.room) {
+					socket.disconnect();
+					logSocket(socket, 'Already in room on createRoom');
+					return;
+				}
+				// Make sure room does not exist
+				if (Room.get(name)) {
+					socket.emit('createRoomRes', {success: false, error: `Room "${name}" already exists`});
+					return;
+				}
+				// Success
+				socket.emit('createRoomRes', {success: true});
+				new Room(name, password, client);
+			});
+		}
+	});
+
+	socket.on('disconnect', () => {
+		logSocket(socket, 'Disconnect');
+		if (!client) return;
+		client.disconnectTimeout = setTimeout(() => {
+			client = client as Client;
+			if (client.room) client.room.remove(client);
+			logSocket(socket, 'Full disconnect');
+			clients.delete(client.id);
+			usernameToId.delete(client.username);
+		}, 60000);
+	});
+});
--- a/back/src/logSocket.ts
+++ b/back/src/logSocket.ts
@ -0,0 +1,5 @@
+import {Socket} from 'socket.io';
+
+export default (socket: Socket, s: string) => {
+	console.log(`[${socket.id}, ${socket.handshake.address}] ${s}`);
+};
--- a/back/src/server.ts
+++ b/back/src/server.ts
@ -0,0 +1,15 @@
+import fs from 'fs';
+import http from 'http';
+import https from 'https';
+import {Server} from 'socket.io';
+
+const base = process.env.SSL_KEY && process.env.SSL_CERT && process.env.SSL_CA ? https.createServer({
+	"key": fs.readFileSync(process.env.SSL_KEY),
+  "cert": fs.readFileSync(process.env.SSL_CERT),
+  "ca": fs.readFileSync(process.env.SSL_CA)
+}) : http.createServer();
+base.listen(+process.env.PORT!, () => {
+	console.log(`Listening on port ${process.env.PORT}`);
+});
+
+export default new Server(base, {cors: {origin: process.env.ORIGIN, methods: ['GET', 'POST']}});
--- a/back/tsconfig.json
+++ b/back/tsconfig.json
@ -0,0 +1,11 @@
+{
+	"compilerOptions": {
+		"target": "es5",
+		"module": "commonjs",
+		"outDir": "dist",
+		"strict": true,
+		"esModuleInterop": true,
+		"skipLibCheck": true,
+		"forceConsistentCasingInFileNames": true
+	}
+}
--- a/core/package-lock.json
+++ b/core/package-lock.json
@ -0,0 +1,14 @@
+{
+  "name": "big2-core",
+  "version": "1.0.0",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "typescript": {
+      "version": "4.1.5",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.1.5.tgz",
+      "integrity": "sha512-6OSu9PTIzmn9TCDiovULTnET6BgXtDYL4Gg4szY+cGsc3JP1dQL8qvE8kShTRx1NIw4Q9IBHlwODjkjWEtMUyA==",
+      "dev": true
+    }
+  }
+}
--- a/core/package.json
+++ b/core/package.json
@ -0,0 +1,14 @@
+{
+  "name": "big2-core",
+  "version": "1.0.0",
+  "description": "",
+  "main": "dist/index.js",
+  "scripts": {
+    "build": "tsc"
+  },
+  "author": "",
+  "license": "ISC",
+  "devDependencies": {
+    "typescript": "^4.1.5"
+  }
+}
--- a/core/src/Card.ts
+++ b/core/src/Card.ts
@ -0,0 +1,8 @@
+import Suit from './Suit';
+
+interface Card {
+	rank: number;
+	suit: Suit;
+}
+
+export default Card;
--- a/core/src/Suit.ts
+++ b/core/src/Suit.ts
@ -0,0 +1,8 @@
+enum Suit {
+	Clubs,
+	Diamonds,
+	Hearts,
+	Spades
+}
+
+export default Suit;
--- a/core/src/canPlay.ts
+++ b/core/src/canPlay.ts
@ -0,0 +1,72 @@
+import Card from './Card';
+import cmpCard from './cmpCard';
+import realRank from './realRank';
+
+class Hand {
+	size: number;
+	overrideSize: boolean;
+	matchFunc: (cards: Card[]) => Card | null;
+	constructor(size: number, overrideSize: boolean, matchFunc: (cards: Card[]) => Card | null) {
+		this.size = size;
+		this.overrideSize = overrideSize;
+		this.matchFunc = matchFunc;
+	}
+	match(cards: Card[]) {
+		return cards.length === this.size && this.matchFunc(cards);
+	}
+}
+
+const chkFlush = (cards: Card[]) => cards.every((card: Card) => card.suit === cards[0].suit);
+const chkStraight = (cards: Card[]) => {
+	let ok = true;
+	for (let i = 1; i < 5; ++i)
+		ok = ok && realRank(cards[0]) + i === realRank(cards[i]);
+	if (ok) return true;
+	// 3 4 5 6 2
+	ok = cards[4].rank === 2;
+	for (let i = 0; i < 4; ++i)
+		ok = ok && cards[0].rank === 3 + i;
+	if (ok) return true;
+	return false;
+};
+
+const hands = [
+	// Straight Flush
+	new Hand(5, true, (cards: Card[]) => chkFlush(cards) && chkStraight(cards) ? cards[4] : null),
+	// Four of a Kind
+	new Hand(5, true, (cards: Card[]) =>
+		(cards[0].rank === cards[3].rank ? cards[3] : null) ||
+		(cards[1].rank === cards[4].rank ? cards[4] : null)
+	),
+	// Full House
+	new Hand(5, false, (cards: Card[]) =>
+		(cards[0].rank === cards[2].rank && cards[3].rank === cards[4].rank ? cards[2] : null) ||
+		(cards[0].rank === cards[1].rank && cards[2].rank === cards[4].rank ? cards[4] : null)
+	),
+	// Straight
+	new Hand(5, false, (cards: Card[]) => chkStraight(cards) ? cards[4] : null),
+	// Flush
+	new Hand(5, false, (cards: Card[]) => chkFlush(cards) ? cards[4] : null),
+	// Pair
+	new Hand(2, false, (cards: Card[]) => cards[0].rank === cards[1].rank ? cards[1] : null),
+	// Single
+	new Hand(1, false, (cards: Card[]) => cards[0])
+];
+
+const parseHand = (cards: Card[]) => {
+	for (let i = 0; i < hands.length; ++i) {
+		const card = hands[i].match(cards);
+		if (card) return {id: i, card};
+	}
+	return null;
+};
+
+export default function canPlay(prev: Card[] | null, cur: Card[]) {
+	const curHand = parseHand(cur);
+	if (!curHand) return false;
+	if (!prev) return true;
+	const prevHand = parseHand(prev)!;
+	if (!hands[curHand.id].overrideSize && cur.length !== prev.length) return false;
+	if (curHand.id !== prevHand.id) return curHand.id < prevHand.id;
+	return cmpCard(prevHand.card, curHand.card) < 0;
+};
--- a/core/src/cmpCard.ts
+++ b/core/src/cmpCard.ts
@ -0,0 +1,8 @@
+import Card from './Card';
+import realRank from './realRank';
+
+export default function cmpCard(a: Card, b: Card) {
+	if (a.rank !== b.rank)
+		return realRank(a) - realRank(b);
+	return a.suit - b.suit;
+};
--- a/core/src/index.ts
+++ b/core/src/index.ts
@ -0,0 +1,5 @@
+export {default as canPlay} from './canPlay';
+export {default as Card} from './Card';
+export {default as cmpCard} from './cmpCard';
+export {default as realRank} from './realRank';
+export {default as Suit} from './Suit';
--- a/core/src/realRank.ts
+++ b/core/src/realRank.ts
@ -0,0 +1,5 @@
+import Card from './Card';
+
+export default function realRank(card: Card) {
+	return (card.rank + 10) % 13;
+}
--- a/core/tsconfig.json
+++ b/core/tsconfig.json
@ -0,0 +1,12 @@
+{
+	"compilerOptions": {
+		"target": "es5",
+		"module": "commonjs",
+		"outDir": "dist",
+		"strict": true,
+		"esModuleInterop": true,
+		"skipLibCheck": true,
+		"forceConsistentCasingInFileNames": true,
+		"declaration": true
+	}
+}
--- a/front.md
+++ b/front.md
@ -0,0 +1,36 @@
+# Front
+
+This is a [Next.js](https://nextjs.org/) project bootstrapped with [`create-next-app`](https://github.com/vercel/next.js/tree/canary/packages/create-next-app).
+
+## Getting Started
+
+First, run the development server:
+
+```bash
+npm run dev
+# or
+yarn dev
+```
+
+Open [http://localhost:3000](http://localhost:3000) with your browser to see the result.
+
+You can start editing the page by modifying `pages/index.js`. The page auto-updates as you edit the file.
+
+[API routes](https://nextjs.org/docs/api-routes/introduction) can be accessed on [http://localhost:3000/api/hello](http://localhost:3000/api/hello). This endpoint can be edited in `pages/api/hello.js`.
+
+The `pages/api` directory is mapped to `/api/*`. Files in this directory are treated as [API routes](https://nextjs.org/docs/api-routes/introduction) instead of React pages.
+
+## Learn More
+
+To learn more about Next.js, take a look at the following resources:
+
+- [Next.js Documentation](https://nextjs.org/docs) - learn about Next.js features and API.
+- [Learn Next.js](https://nextjs.org/learn) - an interactive Next.js tutorial.
+
+You can check out [the Next.js GitHub repository](https://github.com/vercel/next.js/) - your feedback and contributions are welcome!
+
+## Deploy on Vercel
+
+The easiest way to deploy your Next.js app is to use the [Vercel Platform](https://vercel.com/new?utm_medium=default-template&filter=next.js&utm_source=create-next-app&utm_campaign=create-next-app-readme) from the creators of Next.js.
+
+Check out our [Next.js deployment documentation](https://nextjs.org/docs/deployment) for more details.
--- a/front/components/CreateRoomForm.tsx
+++ b/front/components/CreateRoomForm.tsx
@ -0,0 +1,46 @@
+import {useState} from 'react';
+
+export default function CreateRoomForm({socket} : {socket: SocketIOClient.Socket}) {
+	const [name, setName] = useState('');
+	const [password, setPassword] = useState('');
+	const [waiting, setWaiting] = useState(false);
+	const [error, setError] = useState('');
+
+	return (
+		<>
+			<p>Create Room</p>
+			<input
+				type="text"
+				maxLength={15}
+				placeholder="Room name..."
+				value={name}
+				onChange={(e) => setName(e.target.value)}
+				disabled={waiting}
+			/>
+			<input
+				type="text"
+				maxLength={15}
+				placeholder="Password..."
+				value={password}
+				onChange={(e) => setPassword(e.target.value)}
+				disabled={waiting}
+			/>
+			<button
+				onClick={() => {
+					setWaiting(true);
+					socket.emit('createRoom', name, password);
+					socket.once('createRoomRes', (data: {success: boolean; error?: string}) => {
+						setWaiting(false);
+						if (!data.success)
+							setError(data.error!);
+					});
+				}}
+				disabled={!name || waiting}
+			>
+				Create
+			</button>
+			{waiting && 'Creating room...'}
+			<p style={{color: 'red'}}>{error}</p>
+		</>
+	);
+};
--- a/front/components/JoinRoomForm.tsx
+++ b/front/components/JoinRoomForm.tsx
@ -0,0 +1,46 @@
+import {useState} from 'react';
+
+export default function JoinRoomForm({socket} : {socket: SocketIOClient.Socket}) {
+	const [name, setName] = useState('');
+	const [password, setPassword] = useState('');
+	const [waiting, setWaiting] = useState(false);
+	const [error, setError] = useState('');
+
+	return (
+		<>
+			<p>Join Room</p>
+			<input
+				type="text"
+				maxLength={15}
+				placeholder="Room name..."
+				value={name}
+				onChange={(e) => setName(e.target.value)}
+				disabled={waiting}
+			/>
+			<input
+				type="text"
+				maxLength={15}
+				placeholder="Password..."
+				value={password}
+				onChange={(e) => setPassword(e.target.value)}
+				disabled={waiting}
+			/>
+			<button
+				onClick={() => {
+					setWaiting(true);
+					socket.emit('joinRoom', name, password);
+					socket.once('joinRoomRes', (data: {success: boolean; error?: string}) => {
+						setWaiting(false);
+						if (!data.success)
+							setError(data.error!);
+					});
+				}}
+				disabled={!name || waiting}
+			>
+				Join
+			</button>
+			{waiting && 'Joining room...'}
+			<p style={{color: 'red'}}>{error}</p>
+		</>
+	);
+};
--- a/front/components/LoginForm.tsx
+++ b/front/components/LoginForm.tsx
@ -0,0 +1,41 @@
+import {useEffect, useState} from 'react';
+
+export default function LoginForm({finish, socket, username}: {finish: (s: string) => void, socket: SocketIOClient.Socket, username: string | null}) {
+	const [value, setValue] = useState(username || '');
+	const [waiting, setWaiting] = useState(false);
+	const [error, setError] = useState('');
+
+	const login = () => {
+		setWaiting(true);
+		socket.emit('login', value);
+		socket.once('loginRes', (data: {success: boolean; error?: string}) => {
+			setWaiting(false);
+			if (data.success)
+				finish(value);
+			else
+				setError(data.error!);
+		});
+	};
+
+	useEffect(() => {
+		if (username) login();
+	}, []);
+
+	return (
+		<>
+			<input
+				type="text"
+				maxLength={15}
+				placeholder="Your username..."
+				value={value}
+				onChange={(e) => setValue(e.target.value)}
+				disabled={waiting}
+			/>
+			<button onClick={login} disabled={!value || waiting}>
+				Ok
+			</button>
+			{waiting && 'Logging in...'}
+			<p style={{color: 'red'}}>{error}</p>
+		</>
+	);
+};
--- a/front/next-env.d.ts
+++ b/front/next-env.d.ts
@ -0,0 +1,2 @@
+/// <reference types="next" />
+/// <reference types="next/types/global" />
--- a/front/package-lock.json
+++ b/front/package-lock.json
--- a/front/package.json
+++ b/front/package.json
@ -0,0 +1,25 @@
+{
+  "name": "big2-front",
+  "version": "0.1.0",
+  "private": true,
+  "scripts": {
+    "dev": "next dev",
+    "build": "next build",
+    "start": "next start",
+    "tsc": "tsc",
+    "preinstall": "cd ../core && npm i && npm run build"
+  },
+  "dependencies": {
+    "big2-core": "file:../core",
+    "next": "10.0.6",
+    "react": "17.0.1",
+    "react-dom": "17.0.1",
+    "socket.io-client": "^3.1.1"
+  },
+  "devDependencies": {
+    "@types/node": "^14.14.27",
+    "@types/react": "^17.0.2",
+    "@types/socket.io-client": "^1.4.35",
+    "typescript": "^4.1.5"
+  }
+}
--- a/front/pages/_app.js
+++ b/front/pages/_app.js
@ -0,0 +1,7 @@
+import '../styles/globals.css'
+
+function MyApp({ Component, pageProps }) {
+  return <Component {...pageProps} />
+}
+
+export default MyApp
--- a/front/pages/api/hello.js
+++ b/front/pages/api/hello.js
@ -0,0 +1,5 @@
+// Next.js API route support: https://nextjs.org/docs/api-routes/introduction
+
+export default (req, res) => {
+  res.status(200).json({ name: 'John Doe' })
+}
--- a/front/pages/game.tsx
+++ b/front/pages/game.tsx
@ -0,0 +1,159 @@
+import {canPlay, Card} from 'big2-core';
+import {useEffect, useState} from 'react';
+import io from 'socket.io-client';
+
+import CreateRoomForm from '../components/CreateRoomForm';
+import JoinRoomForm from '../components/JoinRoomForm';
+import LoginForm from '../components/LoginForm';
+
+interface GameState {
+	cards: Card[],
+	players: {username: string, numCards: number, rank: number}[],
+	lastPlayed: Card[] | null,
+	lastPlayedPlayer: string | null,
+	playerTurn: string
+}
+
+const rankStrs = ['', 'A', '2', '3', '4', '5', '6', '7', '8', '9', '10', 'J', 'Q', 'K'];
+const suitChars = ['♣', '♦', '♥', '♠'];
+
+export default function Game() {
+	const [socket, setSocket] = useState<SocketIOClient.Socket | null>(null);
+	const [connected, setConnected] = useState(false);
+	const [loggedIn, setLoggedIn] = useState(false);
+	const [username, setUsername] = useState<string | null>(null);
+
+	const [room, setRoom] = useState<string | null>(null);
+	const [roomUsers, setRoomUsers] = useState<string[]>([]);
+	const [roomHost, setRoomHost] = useState('');
+
+	const [gameState, setGameState] = useState<GameState | null>(null);
+	const [cardSelected, setCardSelected] = useState<boolean[]>([]);
+
+	useEffect(() => {
+		const socket = io(process.env.NEXT_PUBLIC_BACK_HOST!);
+		setSocket(socket);
+		socket.on('connect', () => setConnected(true));
+		socket.on('disconnect', () => {
+			setConnected(false);
+			setLoggedIn(false);
+			setRoom(null);
+			setGameState(null);
+		});
+
+		socket.on('joinRoom', (data: {name: string}) => setRoom(data.name));
+		socket.on('leaveRoom', () => {
+			setRoom(null);
+			setGameState(null);
+		});
+		socket.on('roomUpdate', (data: {users: string[], host: string}) => {
+			setRoomUsers(data.users);
+			setRoomHost(data.host);
+		});
+
+		socket.on('gameState', (data: GameState) => {
+			setGameState(data);
+			if (data.cards.length !== cardSelected.length)
+				setCardSelected(new Array(data.cards.length).fill(false));
+		});
+		socket.on('endGame', () => setGameState(null));
+
+		return () => {socket.close()};
+	}, []);
+
+	if (!socket) return null;
+	if (!loggedIn) {
+		return (
+			<LoginForm
+				socket={socket}
+				finish={(s) => {
+					setLoggedIn(true);
+					setUsername(s);
+				}}
+				username={username}
+			/>
+		);
+	}
+	if (!room) {
+		return (
+			<>
+				<p>Logged in as {username}</p>
+				<hr />
+				<JoinRoomForm socket={socket} />
+				<hr />
+				<CreateRoomForm socket={socket} />
+			</>
+		);
+	}
+	if (!gameState) {
+		return (
+			<>
+				<p>Room {room}</p>
+				<p>Users:</p>
+				<ul>
+					{roomUsers.map(user => <li key={user}>{user + (user === roomHost ? ' (Host)':'')}</li>)}
+				</ul>
+				<button onClick={() => socket.emit('leaveRoom')}>Leave</button>
+				{username === roomHost &&
+					<button
+						onClick={() => socket.emit('startGame')}
+						disabled={roomUsers.length < 3}
+					>
+						Start
+					</button>
+				}
+			</>
+		);
+	}
+	const selectedCards = gameState.cards.filter((_, i) => cardSelected[i]);
+	return (
+		<>
+			<ul>
+				{gameState.players.map(p => (
+					<li key={p.username}>
+						{p.username + (p.rank ? ` (Rank ${p.rank})` : '') + (p.numCards ? ` (${p.numCards} cards)` : '')}
+					</li>
+				))}
+			</ul>
+			<div>
+				<p>Last played:</p>
+				{gameState.lastPlayed ? (
+					<>
+						{gameState.lastPlayed.map((card, i) => <span key={i}>{rankStrs[card.rank]+' '+suitChars[card.suit]+'|'}</span>)}
+						{` by ${gameState.lastPlayedPlayer}`}
+					</>
+				) : '(Nothing)'}
+			</div>
+			{`It's ${gameState.playerTurn}'s turn!`}
+			<div>
+				<p>Your cards:</p>
+				{gameState.cards.map((card, i) => (
+					<label key={card.rank+' '+card.suit}>
+						<input
+							type="checkbox"
+							checked={cardSelected[i] || false}
+							onChange={() => {
+								const cardSelected2 = [...cardSelected];
+								cardSelected2[i] = !cardSelected[i];
+								setCardSelected(cardSelected2);
+							}}
+						/>
+						{rankStrs[card.rank]+' '+suitChars[card.suit]}
+					</label>
+				))}
+				<button
+					onClick={() => socket.emit('turn', selectedCards)}
+					disabled={username !== gameState.playerTurn || !canPlay(gameState.lastPlayed, selectedCards)}
+				>
+					Play
+				</button>
+				<button
+					onClick={() => socket.emit('turn', null)}
+					disabled={username !== gameState.playerTurn}
+				>
+					Pass
+				</button>
+			</div>
+		</>
+	);
+}
--- a/front/pages/index.js
+++ b/front/pages/index.js
@ -0,0 +1,65 @@
+import Head from 'next/head'
+import styles from '../styles/Home.module.css'
+
+export default function Home() {
+  return (
+    <div className={styles.container}>
+      <Head>
+        <title>Create Next App</title>
+        <link rel="icon" href="/favicon.ico" />
+      </Head>
+
+      <main className={styles.main}>
+        <h1 className={styles.title}>
+          Welcome to <a href="https://nextjs.org">Next.js!</a>
+        </h1>
+
+        <p className={styles.description}>
+          Get started by editing{' '}
+          <code className={styles.code}>pages/index.js</code>
+        </p>
+
+        <div className={styles.grid}>
+          <a href="https://nextjs.org/docs" className={styles.card}>
+            <h3>Documentation &rarr;</h3>
+            <p>Find in-depth information about Next.js features and API.</p>
+          </a>
+
+          <a href="https://nextjs.org/learn" className={styles.card}>
+            <h3>Learn &rarr;</h3>
+            <p>Learn about Next.js in an interactive course with quizzes!</p>
+          </a>
+
+          <a
+            href="https://github.com/vercel/next.js/tree/master/examples"
+            className={styles.card}
+          >
+            <h3>Examples &rarr;</h3>
+            <p>Discover and deploy boilerplate example Next.js projects.</p>
+          </a>
+
+          <a
+            href="https://vercel.com/new?utm_source=create-next-app&utm_medium=default-template&utm_campaign=create-next-app"
+            className={styles.card}
+          >
+            <h3>Deploy &rarr;</h3>
+            <p>
+              Instantly deploy your Next.js site to a public URL with Vercel.
+            </p>
+          </a>
+        </div>
+      </main>
+
+      <footer className={styles.footer}>
+        <a
+          href="https://vercel.com?utm_source=create-next-app&utm_medium=default-template&utm_campaign=create-next-app"
+          target="_blank"
+          rel="noopener noreferrer"
+        >
+          Powered by{' '}
+          <img src="/vercel.svg" alt="Vercel Logo" className={styles.logo} />
+        </a>
+      </footer>
+    </div>
+  )
+}
--- a/front/public/favicon.ico
+++ b/front/public/favicon.ico
--- a/front/public/vercel.svg
+++ b/front/public/vercel.svg
@ -0,0 +1,4 @@
+<svg width="283" height="64" viewBox="0 0 283 64" fill="none" 
+    xmlns="http://www.w3.org/2000/svg">
+    <path d="M141.04 16c-11.04 0-19 7.2-19 18s8.96 18 20 18c6.67 0 12.55-2.64 16.19-7.09l-7.65-4.42c-2.02 2.21-5.09 3.5-8.54 3.5-4.79 0-8.86-2.5-10.37-6.5h28.02c.22-1.12.35-2.28.35-3.5 0-10.79-7.96-17.99-19-17.99zm-9.46 14.5c1.25-3.99 4.67-6.5 9.45-6.5 4.79 0 8.21 2.51 9.45 6.5h-18.9zM248.72 16c-11.04 0-19 7.2-19 18s8.96 18 20 18c6.67 0 12.55-2.64 16.19-7.09l-7.65-4.42c-2.02 2.21-5.09 3.5-8.54 3.5-4.79 0-8.86-2.5-10.37-6.5h28.02c.22-1.12.35-2.28.35-3.5 0-10.79-7.96-17.99-19-17.99zm-9.45 14.5c1.25-3.99 4.67-6.5 9.45-6.5 4.79 0 8.21 2.51 9.45 6.5h-18.9zM200.24 34c0 6 3.92 10 10 10 4.12 0 7.21-1.87 8.8-4.92l7.68 4.43c-3.18 5.3-9.14 8.49-16.48 8.49-11.05 0-19-7.2-19-18s7.96-18 19-18c7.34 0 13.29 3.19 16.48 8.49l-7.68 4.43c-1.59-3.05-4.68-4.92-8.8-4.92-6.07 0-10 4-10 10zm82.48-29v46h-9V5h9zM36.95 0L73.9 64H0L36.95 0zm92.38 5l-27.71 48L73.91 5H84.3l17.32 30 17.32-30h10.39zm58.91 12v9.69c-1-.29-2.06-.49-3.2-.49-5.81 0-10 4-10 10V51h-9V17h9v9.2c0-5.08 5.91-9.2 13.2-9.2z" fill="#000"/>
+</svg>
--- a/front/styles/Home.module.css
+++ b/front/styles/Home.module.css
@ -0,0 +1,122 @@
+.container {
+  min-height: 100vh;
+  padding: 0 0.5rem;
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+  align-items: center;
+}
+
+.main {
+  padding: 5rem 0;
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
+  align-items: center;
+}
+
+.footer {
+  width: 100%;
+  height: 100px;
+  border-top: 1px solid #eaeaea;
+  display: flex;
+  justify-content: center;
+  align-items: center;
+}
+
+.footer img {
+  margin-left: 0.5rem;
+}
+
+.footer a {
+  display: flex;
+  justify-content: center;
+  align-items: center;
+}
+
+.title a {
+  color: #0070f3;
+  text-decoration: none;
+}
+
+.title a:hover,
+.title a:focus,
+.title a:active {
+  text-decoration: underline;
+}
+
+.title {
+  margin: 0;
+  line-height: 1.15;
+  font-size: 4rem;
+}
+
+.title,
+.description {
+  text-align: center;
+}
+
+.description {
+  line-height: 1.5;
+  font-size: 1.5rem;
+}
+
+.code {
+  background: #fafafa;
+  border-radius: 5px;
+  padding: 0.75rem;
+  font-size: 1.1rem;
+  font-family: Menlo, Monaco, Lucida Console, Liberation Mono, DejaVu Sans Mono,
+    Bitstream Vera Sans Mono, Courier New, monospace;
+}
+
+.grid {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  flex-wrap: wrap;
+  max-width: 800px;
+  margin-top: 3rem;
+}
+
+.card {
+  margin: 1rem;
+  flex-basis: 45%;
+  padding: 1.5rem;
+  text-align: left;
+  color: inherit;
+  text-decoration: none;
+  border: 1px solid #eaeaea;
+  border-radius: 10px;
+  transition: color 0.15s ease, border-color 0.15s ease;
+}
+
+.card:hover,
+.card:focus,
+.card:active {
+  color: #0070f3;
+  border-color: #0070f3;
+}
+
+.card h3 {
+  margin: 0 0 1rem 0;
+  font-size: 1.5rem;
+}
+
+.card p {
+  margin: 0;
+  font-size: 1.25rem;
+  line-height: 1.5;
+}
+
+.logo {
+  height: 1em;
+}
+
+@media (max-width: 600px) {
+  .grid {
+    width: 100%;
+    flex-direction: column;
+  }
+}
--- a/front/styles/globals.css
+++ b/front/styles/globals.css
@ -0,0 +1,16 @@
+html,
+body {
+  padding: 0;
+  margin: 0;
+  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Oxygen,
+    Ubuntu, Cantarell, Fira Sans, Droid Sans, Helvetica Neue, sans-serif;
+}
+
+a {
+  color: inherit;
+  text-decoration: none;
+}
+
+* {
+  box-sizing: border-box;
+}
--- a/front/tsconfig.json
+++ b/front/tsconfig.json
@ -0,0 +1,19 @@
+{
+	"compilerOptions": {
+		"target": "esnext",
+		"lib": ["dom", "dom.iterable", "esnext"],
+		"allowJs": true,
+		"skipLibCheck": true,
+		"strict": true,
+		"forceConsistentCasingInFileNames": true,
+		"noEmit": true,
+		"esModuleInterop": true,
+		"module": "commonjs",
+		"moduleResolution": "node",
+		"resolveJsonModule": true,
+		"isolatedModules": true,
+		"jsx": "preserve"
+	},
+	"include": ["next-env.d.ts", "**/*.ts", "**/*.tsx"],
+	"exclude": ["node_modules"]
+}