From ef4a4f6a2213af9301befe2625be7cc93d5131f8 Mon Sep 17 00:00:00 2001 From: Bespalov Tymofii Date: Sat, 7 Feb 2026 11:01:55 +0100 Subject: [PATCH] first --- .claude/settings.local.json | 10 + .eslintrc.cjs | 26 + .eslintrc.js | 10 - .github/workflows/test.yml-template | 23 + package-lock.json | 846 +++++++++++++++++++++++++--- package.json | 21 +- src/index.js | 1 - src/index.ts | 89 +++ src/public/index.html | 383 +++++++++++++ src/router.ts | 153 +++++ src/schemas.ts | 39 ++ src/store.ts | 122 ++++ src/types.ts | 53 ++ src/ws-handler.ts | 334 +++++++++++ tsconfig.json | 15 + 15 files changed, 2035 insertions(+), 90 deletions(-) create mode 100644 .claude/settings.local.json create mode 100644 .eslintrc.cjs delete mode 100644 .eslintrc.js create mode 100644 .github/workflows/test.yml-template delete mode 100644 src/index.js create mode 100644 src/index.ts create mode 100644 src/public/index.html create mode 100644 src/router.ts create mode 100644 src/schemas.ts create mode 100644 src/store.ts create mode 100644 src/types.ts create mode 100644 src/ws-handler.ts create mode 100644 tsconfig.json diff --git a/.claude/settings.local.json b/.claude/settings.local.json new file mode 100644 index 000000000..31a96abf0 --- /dev/null +++ b/.claude/settings.local.json @@ -0,0 +1,10 @@ +{ + "permissions": { + "allow": [ + "Bash(npm install:*)", + "Bash(export PATH=\"$HOME/.nvm/versions/node/v24.13.0/bin:$PATH\")", + "Bash(npx tsc:*)", + "Bash(npm run lint:*)" + ] + } +} diff --git a/.eslintrc.cjs b/.eslintrc.cjs new file mode 100644 index 000000000..cd2919fd6 --- /dev/null +++ b/.eslintrc.cjs @@ -0,0 +1,26 @@ +module.exports = { + extends: '@mate-academy/eslint-config', + env: { + jest: true, + node: true, + }, + rules: { + 'no-proto': 0, + 'no-console': 0, + }, + plugins: ['jest'], + overrides: [ + { + files: ['*.ts'], + parser: '@typescript-eslint/parser', + parserOptions: { + project: './tsconfig.json', + }, + plugins: ['@typescript-eslint'], + rules: { + 'no-shadow': 'off', + '@typescript-eslint/no-shadow': 'error', + }, + }, + ], +}; diff --git a/.eslintrc.js b/.eslintrc.js deleted file mode 100644 index f44c7a1df..000000000 --- a/.eslintrc.js +++ /dev/null @@ -1,10 +0,0 @@ -module.exports = { - extends: '@mate-academy/eslint-config', - env: { - jest: true - }, - rules: { - 'no-proto': 0 - }, - plugins: ['jest'] -}; diff --git a/.github/workflows/test.yml-template b/.github/workflows/test.yml-template new file mode 100644 index 000000000..bb13dfc45 --- /dev/null +++ b/.github/workflows/test.yml-template @@ -0,0 +1,23 @@ +name: Test + +on: + pull_request: + branches: [ master ] + +jobs: + build: + + runs-on: ubuntu-latest + + strategy: + matrix: + node-version: [20.x] + + steps: + - uses: actions/checkout@v2 + - name: Use Node.js ${{ matrix.node-version }} + uses: actions/setup-node@v1 + with: + node-version: ${{ matrix.node-version }} + - run: npm install + - run: npm test diff --git a/package-lock.json b/package-lock.json index ce07e1dca..abe5c8ed9 100644 --- a/package-lock.json +++ b/package-lock.json @@ -9,14 +9,24 @@ "version": "1.0.0", "hasInstallScript": true, "license": "GPL-3.0", + "dependencies": { + "ws": "^8.19.0", + "zod": "^4.3.6" + }, "devDependencies": { "@mate-academy/eslint-config": "latest", - "@mate-academy/scripts": "^1.8.6", + "@mate-academy/scripts": "^2.1.3", + "@types/node": "^25.2.1", + "@types/ws": "^8.18.1", + "@typescript-eslint/eslint-plugin": "^7.18.0", + "@typescript-eslint/parser": "^7.18.0", "eslint": "^8.57.0", "eslint-plugin-jest": "^28.6.0", "eslint-plugin-node": "^11.1.0", "jest": "^29.7.0", - "prettier": "^3.3.2" + "prettier": "^3.3.2", + "tsx": "^4.21.0", + "typescript": "^5.9.3" } }, "node_modules/@ampproject/remapping": { @@ -59,6 +69,7 @@ "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.24.9.tgz", "integrity": "sha512-5e3FI4Q3M3Pbr21+5xJwCv6ZT6KmGkI0vw3Tozy5ODAQFTIWe37iT8Cr7Ice2Ntb+M3iSKCEWMB1MBgKrW3whg==", "dev": true, + "peer": true, "dependencies": { 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"sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==", - "dev": true + "version": "2.1.3", + "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz", + "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==", + "dev": true, + "license": "MIT" }, "node_modules/natural-compare": { "version": "1.4.0", @@ -7258,6 +7891,7 @@ "resolved": "https://registry.npmjs.org/path-type/-/path-type-4.0.0.tgz", "integrity": "sha512-gDKb8aZMDeD/tZWs9P6+q0J9Mwkdl6xMV8TjnGP3qJVJ06bdMgkbBlLU8IdfOsIsFz2BW1rNVT3XuNEl8zPAvw==", "dev": true, + "license": "MIT", "engines": { "node": ">=8" } @@ -7376,6 +8010,7 @@ "resolved": "https://registry.npmjs.org/prettier/-/prettier-3.3.3.tgz", "integrity": "sha512-i2tDNA0O5IrMO757lfrdQZCc2jPNDVntV0m/+4whiDfWaTKfMNgR7Qz0NAeGz/nRqF4m5/6CLzbP4/liHt12Ew==", "dev": true, + "peer": true, "bin": { "prettier": "bin/prettier.cjs" }, @@ -7584,6 +8219,16 @@ "node": ">=4" } }, + "node_modules/resolve-pkg-maps": { + "version": "1.0.0", + "resolved": "https://registry.npmjs.org/resolve-pkg-maps/-/resolve-pkg-maps-1.0.0.tgz", + "integrity": "sha512-seS2Tj26TBVOC2NIc2rOe2y2ZO7efxITtLZcGSOnHHNOQ7CkiUBfw0Iw2ck6xkIhPwLhKNLS8BO+hEpngQlqzw==", + "dev": true, + "license": "MIT", + "funding": { + "url": "https://github.com/privatenumber/resolve-pkg-maps?sponsor=1" + } + }, "node_modules/resolve.exports": { "version": "2.0.2", "resolved": "https://registry.npmjs.org/resolve.exports/-/resolve.exports-2.0.2.tgz", @@ -8162,6 +8807,26 @@ "integrity": "sha512-xNvxJEOUiWPGhUuUdQgAJPKOOJfGnIyKySOc09XkKsgdUV/3E2zvwZYdejjmRgPCgcym1juLH3226yA7sEFJKQ==", "dev": true }, + "node_modules/tsx": { + "version": "4.21.0", + "resolved": "https://registry.npmjs.org/tsx/-/tsx-4.21.0.tgz", + "integrity": "sha512-5C1sg4USs1lfG0GFb2RLXsdpXqBSEhAaA/0kPL01wxzpMqLILNxIxIOKiILz+cdg/pLnOUxFYOR5yhHU666wbw==", + "dev": true, + "license": "MIT", + "dependencies": { + "esbuild": "~0.27.0", + "get-tsconfig": "^4.7.5" + }, + "bin": { + "tsx": "dist/cli.mjs" + }, + "engines": { + "node": ">=18.0.0" + }, + "optionalDependencies": { + "fsevents": "~2.3.3" + } + }, "node_modules/type-check": { "version": "0.4.0", "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.4.0.tgz", @@ -8269,10 +8934,11 @@ } }, "node_modules/typescript": { - "version": "5.5.4", - "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.5.4.tgz", - "integrity": "sha512-Mtq29sKDAEYP7aljRgtPOpTvOfbwRWlS6dPRzwjdE+C0R4brX/GUyhHSecbHMFLNBLcJIPt9nl9yG5TZ1weH+Q==", + "version": "5.9.3", + "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz", + "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==", "dev": true, + "license": "Apache-2.0", "peer": true, "bin": { "tsc": "bin/tsc", @@ -8298,17 +8964,17 @@ } }, "node_modules/undici-types": { - "version": "5.26.5", - "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-5.26.5.tgz", - "integrity": "sha512-JlCMO+ehdEIKqlFxk6IfVoAUVmgz7cU7zD/h9XZ0qzeosSHmUJVOzSQvvYSYWXkFXC+IfLKSIffhv0sVZup6pA==", - "dev": true + "version": "7.16.0", + "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.16.0.tgz", + "integrity": "sha512-Zz+aZWSj8LE6zoxD+xrjh4VfkIG8Ya6LvYkZqtUQGJPZjYl53ypCaUwWqo7eI0x66KBGeRo+mlBEkMSeSZ38Nw==", + "dev": true, + "license": "MIT" }, "node_modules/universal-user-agent": { "version": "7.0.2", "resolved": "https://registry.npmjs.org/universal-user-agent/-/universal-user-agent-7.0.2.tgz", "integrity": "sha512-0JCqzSKnStlRRQfCdowvqy3cy0Dvtlb8xecj/H8JFZuCze4rwjPZQOgvFvn0Ws/usCHQFGpyr+pB9adaGwXn4Q==", - "dev": true, - "peer": true + "dev": true }, "node_modules/universalify": { "version": "2.0.1", @@ -8658,6 +9324,27 @@ "node": "^12.13.0 || ^14.15.0 || >=16.0.0" } }, + "node_modules/ws": { + "version": "8.19.0", + "resolved": "https://registry.npmjs.org/ws/-/ws-8.19.0.tgz", + "integrity": "sha512-blAT2mjOEIi0ZzruJfIhb3nps74PRWTCz1IjglWEEpQl5XS/UNama6u2/rjFkDDouqr4L67ry+1aGIALViWjDg==", + "license": "MIT", + "engines": { + "node": ">=10.0.0" + }, + "peerDependencies": { + "bufferutil": "^4.0.1", + "utf-8-validate": ">=5.0.2" + }, + "peerDependenciesMeta": { + "bufferutil": { + "optional": true + }, + "utf-8-validate": { + "optional": true + } + } + }, "node_modules/y18n": { "version": "5.0.8", "resolved": "https://registry.npmjs.org/y18n/-/y18n-5.0.8.tgz", @@ -8711,6 +9398,15 @@ "funding": { "url": "https://github.com/sponsors/sindresorhus" } + }, + "node_modules/zod": { + "version": "4.3.6", + "resolved": "https://registry.npmjs.org/zod/-/zod-4.3.6.tgz", + "integrity": "sha512-rftlrkhHZOcjDwkGlnUtZZkvaPHCsDATp4pGpuOOMDaTdDDXF91wuVDJoWoPsKX/3YPQ5fHuF3STjcYyKr+Qhg==", + "license": "MIT", + "funding": { + "url": "https://github.com/sponsors/colinhacks" + } } } } diff --git a/package.json b/package.json index 4f64337fe..0b68908c8 100644 --- a/package.json +++ b/package.json @@ -2,10 +2,13 @@ "name": "node_chat", "version": "1.0.0", "description": "Chat using Node.js", - "main": "src/index.js", + "type": "module", + "main": "dist/index.js", "scripts": { + "dev": "tsx src/index.ts", + "build": "tsc", + "start": "node dist/index.js", "init": "mate-scripts init", - "start": "node src/index.js", "lint": "npm run format && mate-scripts lint", "format": "prettier --ignore-path .prettierignore --write './src/**/*.{js,ts}'", "test:only": "mate-scripts test", @@ -17,14 +20,24 @@ "license": "GPL-3.0", "devDependencies": { "@mate-academy/eslint-config": "latest", - "@mate-academy/scripts": "^1.8.6", + "@mate-academy/scripts": "^2.1.3", + "@types/node": "^25.2.1", + "@types/ws": "^8.18.1", + "@typescript-eslint/eslint-plugin": "^7.18.0", + "@typescript-eslint/parser": "^7.18.0", "eslint": "^8.57.0", "eslint-plugin-jest": "^28.6.0", "eslint-plugin-node": "^11.1.0", "jest": "^29.7.0", - "prettier": "^3.3.2" + "prettier": "^3.3.2", + "tsx": "^4.21.0", + "typescript": "^5.9.3" }, "mateAcademy": { "projectType": "javascript" + }, + "dependencies": { + "ws": "^8.19.0", + "zod": "^4.3.6" } } diff --git a/src/index.js b/src/index.js deleted file mode 100644 index ad9a93a7c..000000000 --- a/src/index.js +++ /dev/null @@ -1 +0,0 @@ -'use strict'; diff --git a/src/index.ts b/src/index.ts new file mode 100644 index 000000000..ce6da9775 --- /dev/null +++ b/src/index.ts @@ -0,0 +1,89 @@ +import * as http from 'http'; +import * as path from 'path'; +import { fileURLToPath } from 'url'; +import { WebSocketServer } from 'ws'; +import { Router, serveStatic, jsonResponse, getContentType } from './router.js'; +import { store } from './store.js'; +import { + handleConnection, + handleDisconnect, + handleMessage, +} from './ws-handler.js'; + +const currentDir = path.dirname(fileURLToPath(import.meta.url)); +const PORT = process.env.PORT ?? 3000; + +const router = new Router(); + +// Serve index.html +router.get('/', (req, res) => { + serveStatic(res, path.join(currentDir, 'public', 'index.html'), 'text/html'); +}); + +// API: get rooms +router.get('/api/rooms', (req, res) => { + const rooms = store.getAllRooms().map((r) => ({ id: r.id, name: r.name })); + + jsonResponse(res, { rooms }); +}); + +// Create HTTP server +const server = http.createServer(async (req, res) => { + // CORS headers + res.setHeader('Access-Control-Allow-Origin', '*'); + res.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS'); + res.setHeader('Access-Control-Allow-Headers', 'Content-Type'); + + if (req.method === 'OPTIONS') { + res.writeHead(204); + res.end(); + + return; + } + + // Try router + const handled = await router.handle(req, res); + + if (handled) { + return; + } + + // Serve static files from public + const url = new URL(req.url ?? '/', `http://${req.headers.host}`); + const filePath = path.join(currentDir, 'public', url.pathname); + const ext = path.extname(filePath); + + if (ext) { + serveStatic(res, filePath, getContentType(ext)); + + return; + } + + // 404 + res.writeHead(404); + res.end('Not Found'); +}); + +// Create WebSocket server +const wss = new WebSocketServer({ server }); + +wss.on('connection', (ws) => { + handleConnection(ws); + + ws.on('message', (data) => { + handleMessage(ws, data.toString()); + }); + + ws.on('close', () => { + handleDisconnect(ws); + }); + + ws.on('error', (err) => { + console.error('WebSocket error:', err); + handleDisconnect(ws); + }); +}); + +server.listen(PORT, () => { + console.log(`Server running on http://localhost:${PORT}`); +}); diff --git a/src/public/index.html b/src/public/index.html new file mode 100644 index 000000000..c92102799 --- /dev/null +++ b/src/public/index.html @@ -0,0 +1,383 @@ + + + + + + Chat + + + +
+
+ +
+ + + + +
+ +
+
Select a room
+
+
+ + +
+
+ + + + + + diff --git a/src/router.ts b/src/router.ts new file mode 100644 index 000000000..d106c44b8 --- /dev/null +++ b/src/router.ts @@ -0,0 +1,153 @@ +import type { IncomingMessage, ServerResponse } from 'http'; +import * as fs from 'fs'; + +type Handler = ( + req: IncomingMessage, + res: ServerResponse, + params: Record, +) => void | Promise; + +interface Route { + method: string; + pattern: RegExp; + paramNames: string[]; + handler: Handler; +} + +export class Router { + private routes: Route[] = []; + + get(routePath: string, handler: Handler): void { + this.addRoute('GET', routePath, handler); + } + + post(routePath: string, handler: Handler): void { + this.addRoute('POST', routePath, handler); + } + + private addRoute(method: string, routePath: string, handler: Handler): void { + const paramNames: string[] = []; + const pattern = routePath.replace(/:(\w+)/g, (_, name) => { + paramNames.push(name); + + return '([^/]+)'; + }); + + this.routes.push({ + method, + pattern: new RegExp(`^${pattern}$`), + paramNames, + handler, + }); + } + + async handle(req: IncomingMessage, res: ServerResponse): Promise { + const method = req.method ?? 'GET'; + const url = new URL(req.url ?? '/', `http://${req.headers.host}`); + const pathname = url.pathname; + + for (const route of this.routes) { + if (route.method !== method) { + continue; + } + + const match = pathname.match(route.pattern); + + if (!match) { + continue; + } + + const params: Record = {}; + + route.paramNames.forEach((name, i) => { + params[name] = match[i + 1]; + }); + + await route.handler(req, res, params); + + return true; + } + + return false; + } +} + +// Body parser +export async function parseBody(req: IncomingMessage): Promise { + return new Promise((resolve, reject) => { + let data = ''; + + req.on('data', (chunk) => (data += chunk)); + + req.on('end', () => { + try { + resolve(data ? JSON.parse(data) : {}); + } catch { + reject(new Error('Invalid JSON')); + } + }); + req.on('error', reject); + }); +} + +// Cookie parser +export function parseCookies(req: IncomingMessage): Record { + const cookies: Record = {}; + const header = req.headers.cookie; + + if (!header) { + return cookies; + } + + header.split(';').forEach((cookie) => { + const [name, ...rest] = cookie.split('='); + + if (name) { + cookies[name.trim()] = rest.join('=').trim(); + } + }); + + return cookies; +} + +// Static file server +export function serveStatic( + res: ServerResponse, + filePath: string, + contentType: string, +): void { + try { + const content = fs.readFileSync(filePath); + + res.writeHead(200, { 'Content-Type': contentType }); + res.end(content); + } catch { + res.writeHead(404); + res.end('Not Found'); + } +} + +// JSON response helper +export function jsonResponse( + res: ServerResponse, + data: unknown, + status = 200, +): void { + res.writeHead(status, { 'Content-Type': 'application/json' }); + res.end(JSON.stringify(data)); +} + +// Get content type by extension +export function getContentType(ext: string): string { + const types: Record = { + '.html': 'text/html', + '.css': 'text/css', + '.js': 'application/javascript', + '.json': 'application/json', + '.png': 'image/png', + '.jpg': 'image/jpeg', + '.svg': 'image/svg+xml', + }; + + return types[ext] ?? 'application/octet-stream'; +} diff --git a/src/schemas.ts b/src/schemas.ts new file mode 100644 index 000000000..d41b42c6d --- /dev/null +++ b/src/schemas.ts @@ -0,0 +1,39 @@ +import { z } from 'zod'; + +export const loginSchema = z.object({ + username: z.string().min(1).max(32), +}); + +export const createRoomSchema = z.object({ + name: z.string().min(1).max(64), +}); + +export const joinRoomSchema = z.object({ + roomId: z.string().min(1), +}); + +export const renameRoomSchema = z.object({ + roomId: z.string().min(1), + name: z.string().min(1).max(64), +}); + +export const deleteRoomSchema = z.object({ + roomId: z.string().min(1), +}); + +export const messageSchema = z.object({ + text: z.string().min(1).max(2000), +}); + +export const clientMessageSchema = z.object({ + type: z.enum([ + 'login', + 'createRoom', + 'joinRoom', + 'leaveRoom', + 'renameRoom', + 'deleteRoom', + 'message', + ]), + payload: z.unknown(), +}); diff --git a/src/store.ts b/src/store.ts new file mode 100644 index 000000000..3e16652e1 --- /dev/null +++ b/src/store.ts @@ -0,0 +1,122 @@ +import type { WebSocket } from 'ws'; +import type { Client, Room, Message, ClientsMap, RoomsMap } from './types.js'; + +const DEFAULT_ROOM_ID = 'general'; +const DEFAULT_ROOM_NAME = 'general'; + +class Store { + private rooms: RoomsMap = new Map(); + private clients: ClientsMap = new Map(); + + constructor() { + this.rooms.set(DEFAULT_ROOM_ID, { + id: DEFAULT_ROOM_ID, + name: DEFAULT_ROOM_NAME, + messages: [], + }); + } + + // Clients + addClient(ws: WebSocket): void { + this.clients.set(ws, { username: null, roomId: null }); + } + + removeClient(ws: WebSocket): string | null { + const client = this.clients.get(ws); + const roomId = client?.roomId ?? null; + + this.clients.delete(ws); + + return roomId; + } + + getClient(ws: WebSocket): Client | undefined { + return this.clients.get(ws); + } + + setClientUsername(ws: WebSocket, username: string): void { + const client = this.clients.get(ws); + + if (client) { + client.username = username; + } + } + + setClientRoom(ws: WebSocket, roomId: string | null): void { + const client = this.clients.get(ws); + + if (client) { + client.roomId = roomId; + } + } + + getClientsInRoom(roomId: string): Array<{ ws: WebSocket; client: Client }> { + const result: Array<{ ws: WebSocket; client: Client }> = []; + + for (const [ws, client] of this.clients) { + if (client.roomId === roomId) { + result.push({ ws, client }); + } + } + + return result; + } + + getAllClients(): ClientsMap { + return this.clients; + } + + // Rooms + getRoom(roomId: string): Room | undefined { + return this.rooms.get(roomId); + } + + getAllRooms(): Room[] { + return Array.from(this.rooms.values()); + } + + createRoom(name: string): Room { + const id = crypto.randomUUID(); + const room: Room = { id, name, messages: [] }; + + this.rooms.set(id, room); + + return room; + } + + renameRoom(roomId: string, name: string): boolean { + const room = this.rooms.get(roomId); + + if (!room) { + return false; + } + room.name = name; + + return true; + } + + deleteRoom(roomId: string): boolean { + if (roomId === DEFAULT_ROOM_ID) { + return false; + } + + return this.rooms.delete(roomId); + } + + addMessage(roomId: string, message: Message): boolean { + const room = this.rooms.get(roomId); + + if (!room) { + return false; + } + room.messages.push(message); + + return true; + } + + getRoomMessages(roomId: string): Message[] { + return this.rooms.get(roomId)?.messages ?? []; + } +} + +export const store = new Store(); diff --git a/src/types.ts b/src/types.ts new file mode 100644 index 000000000..6a28a45ec --- /dev/null +++ b/src/types.ts @@ -0,0 +1,53 @@ +import type { WebSocket } from 'ws'; + +export interface Message { + author: string; + time: string; + text: string; +} + +export interface Room { + id: string; + name: string; + messages: Message[]; +} + +export interface Client { + username: string | null; + roomId: string | null; +} + +export type ClientsMap = Map; +export type RoomsMap = Map; + +// WebSocket message types +export type ClientMessageType = + | 'login' + | 'createRoom' + | 'joinRoom' + | 'leaveRoom' + | 'renameRoom' + | 'deleteRoom' + | 'message'; + +export type ServerMessageType = + | 'loginOk' + | 'error' + | 'roomList' + | 'roomCreated' + | 'roomRenamed' + | 'roomDeleted' + | 'joined' + | 'userJoined' + | 'userLeft' + | 'message'; + +export interface ClientMessage { + type: ClientMessageType; + payload: unknown; +} + +export interface ServerMessage { + type: ServerMessageType; + payload: unknown; +} diff --git a/src/ws-handler.ts b/src/ws-handler.ts new file mode 100644 index 000000000..240778f87 --- /dev/null +++ b/src/ws-handler.ts @@ -0,0 +1,334 @@ +import type { WebSocket } from 'ws'; +import { store } from './store.js'; +import { + clientMessageSchema, + loginSchema, + createRoomSchema, + joinRoomSchema, + renameRoomSchema, + deleteRoomSchema, + messageSchema, +} from './schemas.js'; +import type { Message, ServerMessage } from './types.js'; + +function send(ws: WebSocket, message: ServerMessage): void { + if (ws.readyState === ws.OPEN) { + ws.send(JSON.stringify(message)); + } +} + +function broadcast( + roomId: string, + message: ServerMessage, + exclude?: WebSocket, +): void { + for (const { ws } of store.getClientsInRoom(roomId)) { + if (ws !== exclude) { + send(ws, message); + } + } +} + +function broadcastAll(message: ServerMessage, exclude?: WebSocket): void { + for (const [ws] of store.getAllClients()) { + if (ws !== exclude) { + send(ws, message); + } + } +} + +function sendRoomList(ws: WebSocket): void { + const rooms = store.getAllRooms().map((r) => ({ id: r.id, name: r.name })); + + send(ws, { type: 'roomList', payload: { rooms } }); +} + +function sendError(ws: WebSocket, message: string): void { + send(ws, { type: 'error', payload: { message } }); +} + +export function handleConnection(ws: WebSocket): void { + store.addClient(ws); + sendRoomList(ws); +} + +export function handleDisconnect(ws: WebSocket): void { + const client = store.getClient(ws); + const roomId = store.removeClient(ws); + + if (roomId && client?.username) { + broadcast(roomId, { + type: 'userLeft', + payload: { username: client.username }, + }); + } +} + +export function handleMessage(ws: WebSocket, data: string): void { + let parsed; + + try { + parsed = JSON.parse(data); + } catch { + sendError(ws, 'Invalid JSON'); + + return; + } + + const result = clientMessageSchema.safeParse(parsed); + + if (!result.success) { + sendError(ws, 'Invalid message format'); + + return; + } + + const { type, payload } = result.data; + const client = store.getClient(ws); + + if (!client) { + return; + } + + switch (type) { + case 'login': + handleLogin(ws, payload); + break; + case 'createRoom': + handleCreateRoom(ws, payload); + break; + case 'joinRoom': + handleJoinRoom(ws, payload); + break; + case 'leaveRoom': + handleLeaveRoom(ws); + break; + case 'renameRoom': + handleRenameRoom(ws, payload); + break; + case 'deleteRoom': + handleDeleteRoom(ws, payload); + break; + case 'message': + handleChatMessage(ws, payload); + break; + } +} + +function handleLogin(ws: WebSocket, payload: unknown): void { + const result = loginSchema.safeParse(payload); + + if (!result.success) { + sendError(ws, 'Invalid username'); + + return; + } + + store.setClientUsername(ws, result.data.username); + send(ws, { type: 'loginOk', payload: { username: result.data.username } }); +} + +function handleCreateRoom(ws: WebSocket, payload: unknown): void { + const client = store.getClient(ws); + + if (!client?.username) { + sendError(ws, 'Not logged in'); + + return; + } + + const result = createRoomSchema.safeParse(payload); + + if (!result.success) { + sendError(ws, 'Invalid room name'); + + return; + } + + const room = store.createRoom(result.data.name); + + broadcastAll({ + type: 'roomCreated', + payload: { roomId: room.id, name: room.name }, + }); +} + +function handleJoinRoom(ws: WebSocket, payload: unknown): void { + const client = store.getClient(ws); + + if (!client?.username) { + sendError(ws, 'Not logged in'); + + return; + } + + const result = joinRoomSchema.safeParse(payload); + + if (!result.success) { + sendError(ws, 'Invalid room ID'); + + return; + } + + const room = store.getRoom(result.data.roomId); + + if (!room) { + sendError(ws, 'Room not found'); + + return; + } + + // Leave current room if in one + if (client.roomId) { + broadcast( + client.roomId, + { + type: 'userLeft', + payload: { username: client.username }, + }, + ws, + ); + } + + store.setClientRoom(ws, room.id); + + send(ws, { + type: 'joined', + payload: { roomId: room.id, name: room.name, messages: room.messages }, + }); + + broadcast( + room.id, + { + type: 'userJoined', + payload: { username: client.username }, + }, + ws, + ); +} + +function handleLeaveRoom(ws: WebSocket): void { + const client = store.getClient(ws); + + if (!client?.username || !client.roomId) { + return; + } + + const roomId = client.roomId; + + store.setClientRoom(ws, null); + + broadcast(roomId, { + type: 'userLeft', + payload: { username: client.username }, + }); + sendRoomList(ws); +} + +function handleRenameRoom(ws: WebSocket, payload: unknown): void { + const client = store.getClient(ws); + + if (!client?.username) { + sendError(ws, 'Not logged in'); + + return; + } + + const result = renameRoomSchema.safeParse(payload); + + if (!result.success) { + sendError(ws, 'Invalid rename data'); + + return; + } + + const success = store.renameRoom(result.data.roomId, result.data.name); + + if (!success) { + sendError(ws, 'Room not found'); + + return; + } + + broadcastAll({ + type: 'roomRenamed', + payload: { roomId: result.data.roomId, name: result.data.name }, + }); +} + +function handleDeleteRoom(ws: WebSocket, payload: unknown): void { + const client = store.getClient(ws); + + if (!client?.username) { + sendError(ws, 'Not logged in'); + + return; + } + + const result = deleteRoomSchema.safeParse(payload); + + if (!result.success) { + sendError(ws, 'Invalid room ID'); + + return; + } + + const roomId = result.data.roomId; + + if (roomId === 'general') { + sendError(ws, 'Cannot delete default room'); + + return; + } + + const usersInRoom = store.getClientsInRoom(roomId); + + if (usersInRoom.length > 0) { + sendError(ws, 'Cannot delete room with users in it'); + + return; + } + + const success = store.deleteRoom(roomId); + + if (!success) { + sendError(ws, 'Room not found'); + + return; + } + + broadcastAll({ type: 'roomDeleted', payload: { roomId } }); +} + +function handleChatMessage(ws: WebSocket, payload: unknown): void { + const client = store.getClient(ws); + + if (!client?.username) { + sendError(ws, 'Not logged in'); + + return; + } + + if (!client.roomId) { + sendError(ws, 'Not in a room'); + + return; + } + + const result = messageSchema.safeParse(payload); + + if (!result.success) { + sendError(ws, 'Invalid message'); + + return; + } + + const message: Message = { + author: client.username, + time: new Date().toISOString(), + text: result.data.text, + }; + + store.addMessage(client.roomId, message); + broadcast(client.roomId, { type: 'message', payload: message }); +} diff --git a/tsconfig.json b/tsconfig.json new file mode 100644 index 000000000..446c45a38 --- /dev/null +++ b/tsconfig.json @@ -0,0 +1,15 @@ +{ + "compilerOptions": { + "target": "ES2022", + "module": "NodeNext", + "moduleResolution": "NodeNext", + "outDir": "./dist", + "rootDir": "./src", + "strict": true, + "esModuleInterop": true, + "skipLibCheck": true, + "forceConsistentCasingInFileNames": true + }, + "include": ["src/**/*"], + "exclude": ["node_modules", "dist"] +}