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index.js
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index.js
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import path from 'path'
import fs from 'fs'
import uws from 'uWebSockets.js'
import isbot from 'isbot'
import { serveDir } from 'uwebsocket-serve'
import { fileURLToPath } from 'url'
import {
createRoom,
roomExists,
createPlayer,
getRoom,
validateWord,
tryDeleteRoom,
matchMake,
getRoomCount
} from './games.js'
import arrayCodes, { intCodes, wsCodes } from './statusCodes.js'
import dotenv from 'dotenv'
dotenv.config()
const __dirname = path.dirname(fileURLToPath(import.meta.url))
const { App, DEDICATED_COMPRESSOR_3KB } = uws
const publicPath = path.resolve(__dirname, 'public')
const serveStatic = serveDir(publicPath)
const gameHTML = () => fs.readFileSync(path.resolve(__dirname, 'public/game.html'), 'utf8')
const indexHTML = () => fs.readFileSync(path.resolve(__dirname, 'public/index.html'), 'utf8')
const serviceWorker = () => fs.readFileSync(path.resolve(__dirname, 'public/build/sw.js'), 'utf8')
const baseURL = process.env.BASE_URL || 'http://localhost:8080/game/'
const redirectGame = (res, req) => {
if (!isbot(req.getHeader('user-agent'))) {
res.writeStatus('307').writeHeader('Location', baseURL + createRoom()).end()
} else {
res.writeStatus('200').writeHeader('Content-Type', 'text/html; charset=UTF-8').end(gameHTML())
}
}
const port = parseInt(process.env.PORT) || 8080
const textEncoder = new TextEncoder()
App()
.get('/', (res, req) => res.writeStatus('200')
.writeHeader('Content-Type', 'text/html; charset=UTF-8').end(indexHTML()))
.get('/game', redirectGame)
.get('/game/', redirectGame)
.get('/build/sw.js', (res, req) => res.writeStatus('200')
.writeHeader('Content-Type', 'text/javascript; charset=UTF-8')
.writeHeader('Service-Worker-Allowed', '/')
.end(serviceWorker()))
.get('/gameCount', (res, req) => res.end(JSON.stringify({ gameCount: getRoomCount() })))
.get('/*', serveStatic)
.get('/game/:room', (res, req) => {
res.onAborted(() => {
console.log('aborted')
})
const room = req.getParameter(0)
if (!roomExists(room) || !room) {
redirectGame(res, req)
} else {
res.writeStatus('200')
.writeHeader('Content-Type', 'text/html; charset=UTF-8').end(gameHTML())
}
})
.ws('/game/:room', {
/* There are many common helper features */
idleTimeout: 32,
maxBackpressure: 1024,
maxPayloadLength: 512,
compression: DEDICATED_COMPRESSOR_3KB,
/* For brevity we skip the other events (upgrade, open, ping, pong, close) */
message: (ws, message, isBinary) => {
const room = getRoom(ws.room)
if (message.byteLength === 1) {
const dataArray = new Int8Array(message)
const code = dataArray[0]
switch (code) {
case intCodes.matchMake: {
const match = matchMake()
if (match) {
ws.send(textEncoder.encode(match), true)
} else {
if (room.players !== 2) {
room.matchMake = true
}
}
break
}
}
} else
if (!room) {
ws.end(wsCodes.roomNotFound)
} else if (Object.keys(room.players).length < 2) {
return ws.send(arrayCodes.roomNotFilled, true)
} else {
const player = room.players[ws.id]
if (message.byteLength === 5) {
if (!validateWord(message)) {
ws.send(arrayCodes.notInList, true)
} else {
const messageArray = new Uint8Array(message)
const returnArray = [0, 0, 0, 0, 0]
const testCounts = {}
player.guessCount++
messageArray.forEach((letter, i) => {
if (!testCounts[letter]) { testCounts[letter] = 0 }
if (letter < 65 || letter > 122) {
ws.send(arrayCodes.invalidWord, true)
return
} if (room.word[i] === letter) {
returnArray[i] = 2 // Green
testCounts[letter] = testCounts[letter] += 1
}
})
messageArray.forEach((letter, i) => {
if (returnArray[i] === 0 && testCounts[letter] < room.letterCounts[letter]) {
returnArray[i] = 1 // Yellow
testCounts[letter] = testCounts[letter] += 1
}
})
// console.log(player, Int8Array.from(returnArray))
if (returnArray.every(color => color === 2)) {
// disconnect all players
delete player.ws
ws.end(wsCodes.win)
Object.values(room.players).forEach(player => {
player.ws?.end(wsCodes.lost, room.word)
})
} else {
if (player.guessCount === 6) {
ws.send(Int8Array.of(...messageArray, ...returnArray), true)
delete player.ws
ws.end(wsCodes.lost, room.word)
// send win to everyone
Object.values(room.players).forEach(player => {
player.ws?.send(Int8Array.from(returnArray), true)
player.ws?.end(wsCodes.win, room.word)
})
} else {
// send guess to everyone
Object.keys(room.players).forEach(id => {
if (id !== ws.id) {
room.players[id].ws?.send(Int8Array.from(returnArray), true)
} else {
// will need to see if 10 byte message is better or worse
// than many promise approach
ws.send(Int8Array.of(...messageArray, ...returnArray), true)
}
})
}
}
}
}
}
},
upgrade: (res, req, ctx) => {
res.onAborted(() => {
console.log('aborted')
})
const room = req.getParameter(0)
if (!room || !roomExists(room)) {
res.writeStatus('400').end('invalidRoom')
} else {
res.upgrade(
{ room: room, id: createPlayer(room) },
req.getHeader('sec-websocket-key'),
req.getHeader('sec-websocket-protocol'),
req.getHeader('sec-websocket-extensions'),
ctx
)
}
},
open: (ws) => {
const room = getRoom(ws.room)
const players = room.players
if (Object.keys(players).length > 2) {
return ws.end(wsCodes.roomFull)
}
players[ws.id].ws = ws
if (Object.keys(players).length === 2) {
room.matchMake = false
Object.values(players).forEach(player => {
player?.ws.send(arrayCodes.roomReady, true)
})
}
},
close: (ws, code, message) => {
const room = getRoom(ws.room)
// if (!wsCodeList.includes(code)) {
if (code === 1001) {
Object.keys(room.players).forEach(id => {
if (id !== ws.id) { room.players[id].ws?.end(wsCodes.winLastPlayer, room.word) }
})
}
// }
delete room.players[ws.id]
setTimeout(() => {
tryDeleteRoom(ws.room)
}, 1000)
}
}).listen(port, () => {
console.log('Listening on port ' + port)
})