McCarthyism/front/pages/index.tsx

import {Card, Suit} from 'bsx-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, stackSize: number, rank: number}[],
	lastPlayed: number,
	lastPlayedPlayer: string | null,
	playerTurn: string
	phase: number
}

const rankStrs = ['', 'A', '2', '3', '4', '5', '6', '7', '8', '9', '10', 'J', 'Q', 'K'];
const suitChars = ['♣', '♦', '♥', '♠'];

function useForceUpdate(){
    const [value, setValue] = useState(0);
    return () => setValue(value => value + 1);
}

export default function Game() {
	const forceUpdate = useForceUpdate();

	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 [num, setNum] = useState(0);

	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);
		});
		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 < 2}
					>
						Start
					</button>
				}
			</>
		);
	}
	if (gameState.phase === 0) {
		return (
			<>
				<ul>
					{gameState.players.map(p => (
						<li key={p.username}>
							{p.username + (p.rank ? ` (Rank ${p.rank})` : '') + (p.numCards ? ` (${p.numCards} cards)` : '')}
						</li>
					))}
				</ul>
				{`Rearrange your card stack from top to bottom!`}
				<div>
					<p>Your cards:</p>
					{gameState.cards.map((card, i) => (
						<label key={card.rank+' '+card.suit}>
							<div>
								<button
									onClick={() => {
										const tmp = gameState.cards[i];
										gameState.cards[i] = gameState.cards[i-1];
										gameState.cards[i-1] = tmp;
										forceUpdate();
									}}
									disabled={i === 0}
								>
									Move up
								</button>
								<span style={{color: (card.suit === Suit.Hearts || card.suit === Suit.Diamonds ? 'red' : 'black')}}>
									{' '+rankStrs[card.rank]+' '+suitChars[card.suit]}
								</span>
							</div>
						</label>
					))}
					<button
						onClick={() => socket.emit('prepare', gameState.cards)}
						//disabled={username !== gameState.playerTurn || !canPlay(gameState.lastPlayed, selectedCards)}
					>
						I'm ready!
					</button>
				</div>
			</>
		);
	}
	if (gameState.phase === 1) {
		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}
							{` by ${gameState.lastPlayedPlayer}`}
						</>
					) : '(Nothing)'}
				</div>
				{`It's ${gameState.playerTurn}'s turn!`}
				<div>
					<input
						type="text"
						placeholder="Claim a number greater than the last claimed number..."
						value={num}
						onChange={(e) => setNum(+e.target.value)}
					/>
					<button
						onClick={() => socket.emit('turn', num)}
						disabled={username !== gameState.playerTurn || num <= gameState.lastPlayed}
					>
						Claim!
					</button>
					<button
						onClick={() => socket.emit('turn', -1)}
						disabled={username !== gameState.playerTurn || gameState.lastPlayed === 0}
					>
						BS!
					</button>
				</div>
			</>
		);
	}
	if (gameState.phase === 2) {
		return (
			<>
				<ul>
					{gameState.players.map(p => (
						<li key={p.username}>
							{p.username + (p.rank ? ` (Rank ${p.rank})` : '') + (p.numCards ? ` (${p.numCards} cards)` : '')}
						</li>
					))}
				</ul>
				{`${gameState.playerTurn} has called BS! ${gameState.lastPlayedPlayer} must flip over ${gameState.lastPlayed} black cards!`}
				<div>
					<p>Stacks:</p>
					{gameState.players.map((player, i) => (
						<label key={player.username+': '+player.stackSize}>
							<button
								onClick={() => socket.emit('flip', i)}
								disabled={username !== gameState.lastPlayedPlayer}
							>
								Flip!
							</button>
							{' '+player.username+': '+player.stackSize+' cards    '}
						</label>
					))}
				</div>
			</>
		);
	}
	if (gameState.phase === 3) {
		return (
			<>
				<ul>
					{gameState.players.map(p => (
						<li key={p.username}>
							{p.username + (p.rank ? ` (Rank ${p.rank})` : '') + (p.numCards ? ` (${p.numCards} cards)` : '')}
						</li>
					))}
				</ul>
				{(gameState.lastPlayed ? `${gameState.lastPlayedPlayer}` : `${gameState.playerTurn}`) + ` lost! Now they must give up one of their cards!`}
				<div>
					<p>Your cards:</p>
					{gameState.cards.map((card, i) => (
						<label key={card.rank+' '+card.suit}>
							<div>
								<button
									onClick={() => socket.emit('giveup', i)}
									disabled={username !== (gameState.lastPlayed ? gameState.lastPlayedPlayer : gameState.playerTurn)}
								>
									Give up this card!
								</button>
								<span style={{color: (card.suit === Suit.Hearts || card.suit === Suit.Diamonds ? 'red' : 'black')}}>
									{' '+rankStrs[card.rank]+' '+suitChars[card.suit]}
								</span>
							</div>
						</label>
					))}
				</div>
			</>
		);
	}
	return (
		<>
			<div>
				<p>Something went wrong! :/</p>
			</div>
		</>
	);
}