Initial project structure and beta backend, with half finished frontend

This commit is contained in:
Annie 2025-03-09 20:02:58 +03:00
parent acacaece0f
commit 29fa54ce71
10 changed files with 1069 additions and 0 deletions

66
index.js Normal file
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const express = require('express');
const { createServer } = require('http');
const WebSocket = require('ws');
const path = require('path');
const MessageRouter = require('./lib/messageRouter');
const ConnectionManager = require('./lib/connectionManager');
const app = express();
app.use(express.static(path.join(__dirname, 'public')));
const server = createServer(app);
const wss = new WebSocket.Server({ server });
const connectionManager = new ConnectionManager();
const messageRouter = new MessageRouter(connectionManager);
wss.on('connection', (ws, req) => {
const query = req.url?.split('?')[1];
const urlParams = new URLSearchParams(query);
const username = urlParams.get('u');
if (!username) {
ws.send(JSON.stringify({
error: true,
message: "Use /?u=... to set a username"
}));
ws.close();
return;
}
if (!connectionManager.addUser(username, ws)) {
ws.send(JSON.stringify({
error: true,
message: "This user is currently online, pick another username"
}));
ws.close();
return;
}
console.log(`[Connection] User connected: ${username}`);
ws.on('message', (data) => {
try {
const parsedData = JSON.parse(data.toString());
messageRouter.routeMessage(username, parsedData);
} catch (err) {
const errorMsg = {
error: true,
message: `Invalid JSON format: ${err.message}`
};
ws.send(JSON.stringify(errorMsg));
}
});
ws.on('close', () => {
connectionManager.removeUser(username);
console.log(`[Connection] User disconnected: ${username}`);
});
ws.send(JSON.stringify({ error: false, message: `Connected as ${username}` }));
});
server.listen(65010, 'localhost', () => {
console.log(`[callback] started`);
});

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lib/connectionManager.js Normal file
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class ConnectionManager {
constructor() {
this.users = new Map();
}
/**
* Adds a new user to the active connections.
* Returns false if the user already exists.
*/
addUser(username, ws) {
if (this.users.has(username)) {
return false;
}
this.users.set(username, ws);
return true;
}
/**
* Remove a user by username.
*/
removeUser(username) {
this.users.delete(username);
}
/**
* Get the socket connection for a given username.
*/
getUserSocket(username) {
return this.users.get(username);
}
/**
* Broadcasts a message to all connected users except the supplied username.
*/
broadcast(message, excludeUser = null) {
for (const [username, ws] of this.users.entries()) {
if (username !== excludeUser && ws.readyState === ws.OPEN) {
ws.send(JSON.stringify(message));
}
}
}
}
module.exports = ConnectionManager;

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lib/messageRouter.js Normal file
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class MessageRouter {
/**
* @param {ConnectionManager} connectionManager An instance of ConnectionManager.
*/
constructor(connectionManager) {
this.connectionManager = connectionManager;
}
/**
* Routes the incoming message based on its content.
*
* The expected JSON structure:
* {
* type: "private" | "broadcast" | "other",
* payload: {
* u: "recipient username", // for private messages
* body: "...", // message body
* // additional fields for other types can be added too
* }
* }
*
* If 'type' is omitted, it defaults to "private".
*/
routeMessage(fromUser, data) {
const type = data.type || 'private';
switch (type) {
case 'private':
this.handlePrivateMessage(fromUser, data.payload);
break;
case 'broadcast':
this.handleBroadcastMessage(fromUser, data.payload);
break;
default:
this.sendError(fromUser, `Unknown message type: ${type}`);
}
}
handlePrivateMessage(fromUser, payload) {
if (!payload || !payload.u || !payload.body) {
return this.sendError(fromUser, "Invalid payload for a private message. Required: { u, body }");
}
const recipientSocket = this.connectionManager.getUserSocket(payload.u);
if (recipientSocket && recipientSocket.readyState === recipientSocket.OPEN) {
recipientSocket.send(JSON.stringify({
error: false,
message: {
from: fromUser,
body: payload.body
}
}));
} else {
this.sendError(fromUser, `User ${payload.u} is not online`);
}
}
handleBroadcastMessage(fromUser, payload) {
if (!payload || !payload.body) {
return this.sendError(fromUser, "Invalid payload for broadcast message. Required: { body }");
}
const msg = {
error: false,
message: {
from: fromUser,
body: payload.body
}
};
this.connectionManager.broadcast(msg, fromUser);
}
sendError(toUser, errorMessage) {
const ws = this.connectionManager.getUserSocket(toUser);
if (ws && ws.readyState === ws.OPEN) {
ws.send(JSON.stringify({ error: true, message: errorMessage }));
}
}
}
module.exports = MessageRouter;

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package.json Normal file
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{
"dependencies": {
"express": "^4.21.2",
"ws": "^8.18.1"
}
}

602
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utf-8-validate: '>=5.0.2'
peerDependenciesMeta:
bufferutil:
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utf-8-validate:
optional: true
snapshots:
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dependencies:
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cookie: 0.7.1
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debug: 2.6.9
depd: 2.0.0
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nr.defineComponent({
name: "login",
template: `
<div style="height: 100vh; width: 100vw;" class="d-flex justify-content-center align-items-center">
<div id="login" class="card" style="max-width: 30rem; flex: 1 1 auto;">
<div class="header w-100 d-flex justify-content-center">
<img src="/favicon.png" style="width: 3rem;">
</div>
<div class="header">Welcome to <code>callback</code>.</div>
<div class="body">
<div class="fill-error alert m-0 m-top-2" style="display: none;">
error
</div>
<div class="textfield m-0 m-bottom-2 m-top-2">
<span class="label">Username</span>
<input type="text" placeholder="">
</div>
<div class="fill-primary linear-progress indeterminate m-bottom-2" style="display: none;"><div></div></div>
<button class="small w-100 fill-primary btn" type="submit">Login</button>
</div>
</div>
</div>
`,
beforeCreate: () => {
return { useShadowRoot: false }
},
afterCreate: (shadowRoot, config = {}, env) => {
const compName = nr.components[nr.mountedComponents[env.mountingTo]].name;
const ctx = nr.findComponentById(env.cid);
const form = {
loginButton: ctx.querySelector('button'),
progressBar: ctx.querySelector('.linear-progress'),
usernameField: ctx.querySelector('.textfield input'),
errorContainer: ctx.querySelector('.alert')
}
if (localStorage.getItem('username')) {
form.usernameField.value = localStorage.getItem('username');
handleLogin();
}
form.loginButton.addEventListener('click', handleLogin);
function showError(error) {
form.progressBar.style.display = 'none';
form.loginButton.disabled = false;
form.usernameField.disabled = false;
form.errorContainer.style.display = 'block';
form.errorContainer.textContent = error;
form.usernameField.focus();
}
function handleLogin() {
try {
form.errorContainer.style.display = 'none';
form.progressBar.style.display = 'block';
form.loginButton.disabled = true;
form.usernameField.disabled = true;
const username = form.usernameField.value;
if (!username) throw new Error('Username cannot be empty');
console.log(`[${compName}] Trying to connect as ${username}`);
let protocol
switch (window.location.protocol) {
case 'http:':
protocol = 'ws:';
break;
case 'https:':
protocol = 'wss:';
break;
default:
throw new Error('Unknown page protocol');
}
window.callback = {
socket: new WebSocket(`${protocol}//${window.location.host}?u=${encodeURIComponent(username)}`)
}
function handleWSLogin(message) {
try {
const res = JSON.parse(message.data);
if (res.error) throw new Error(res.message);
localStorage.setItem('username', username);
console.log(`[${compName}] Logged in as ${username}`)
nr.unmount(env.mountingTo);
nr.mount(config?.appComponent || 'callback', env.mountingTo)
} catch (e) {
showError(e.message);
console.error(e);
}
}
window.callback.socket.addEventListener('open', console.log(`[${compName}] Connected to websocket`));
window.callback.socket.addEventListener('message', handleWSLogin);
} catch (e) {
showError(e.message);
console.error(e);
}
}
}
});
nr.defineComponent({
name: 'callback',
template: `
<div class="d-flex">
<div class="d-flex" style="height: 100vh; width: 100vw; position: fixed; left: -100%; transition: left 0.25s ease-out; z-index: 1000" id="sidebar">
<div class="navdrawer modal" id="sidebarbody">
<div style="all: unset;">
<div class="d-flex w-100 justify-content-space-between align-items-center">
<img src="/favicon.png" style="width: 1.5rem" alt="Logo" class="m-right-3">
<div class="w-100 d-flex align-items-center">
<span class="text-bold" style="margin-right: auto;">Chats</span>
<button class="small fill-primary btn w-50">New</button>
</div>
</div>
</div>
<div id="chats">
<div class="active">
<span class="label">Label</span>
</div>
<div>
<span class="label">Label</span>
</div>
</div>
</div>
</div>
<div class="d-flex flex-column w-100" style="height: 100vh;">
<div style="background-color: var(--md-sys-color-surface-container)" class="d-flex align-items-center w-100 p-3 gap-3">
<span class="material-symbols-outlined" id="menutoggle">menu</span>
<span>Person</span>
</div>
<div style="height: 100%;">
CHATDIV
</div>
<div style="background-color: var(--md-sys-color-surface-container)" class="d-flex align-items-center w-100">
<div class="textfield m-0 w-100 m-left-3">
<span class="label">Message</span>
<input type="text" placeholder="">
</div>
<button type="submit" class="material-symbols-outlined fill-primary btn m-right-3" disabled>send</button>
</div>
</div>
</div>
`,
beforeCreate: () => {
return { useShadowRoot: false }
},
afterCreate: () => {
const sidebar = document.querySelector('#sidebar');
const sidebarBody = document.querySelector('#sidebarbody');
const menutoggle = document.querySelector('#menutoggle');
menutoggle.addEventListener('click', () => {
sidebar.style.left = "0";
});
sidebar.addEventListener('click', (event) => {
if (!sidebarBody.contains(event.target)) {
sidebar.style.left = "-100%";
}
});
const resizeObserver = new ResizeObserver(entries => {
for (let entry of entries) {
const rootFontSize = parseFloat(getComputedStyle(document.documentElement).fontSize);
const fortyRemInPixels = 65 * rootFontSize;
if (entry.contentRect.width > fortyRemInPixels) {
sidebar.style.position = 'static';
sidebarBody.classList.remove('modal');
sidebarBody.classList.add('standart');
menutoggle.style.display = 'none';
} else {
sidebar.style.position = 'fixed';
sidebarBody.classList.remove('standart');
sidebarBody.classList.add('modal');
menutoggle.style.display = 'block';
}
}
});
resizeObserver.observe(document.body);
}
})

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>callback</title>
<meta name="color-scheme" content="dark">
<meta property="og:title" content="callback">
<meta property="og:description" content="Callback is a messanger made by @true1ann">
<meta property="og:image" content="https://callback.true1ann.me/favicon.png">
<meta property="og:url" content="https://callback.true1ann.me/">
<meta property="og:type" content="website">
<meta name="twitter:card" content="summary_large_image">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/true1ann/mmdy.scss@latest/css/styles.css">
<link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/true1ann/mmdy.scss@latest/css/roboto.css">
<link rel="stylesheet" href="https://ann.is-a.dev/mmdy.scss/roboto.css">
<link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@20..48,100..700,0..1,-50..200">
<link rel="stylesheet" href="/mmdy-theme.css">
</head>
<body style="height: 100vh; width: 100vw;">
<script src="https://cdn.jsdelivr.net/npm/markdown-it/dist/markdown-it.min.js"></script>
<script src="https://cdn.jsdelivr.net/gh/true1ann/neorender@latest/dist/bundle.js"></script>
<script src="/components.js"></script>
<div id="app"></div>
<script>nr.mount('login', '#app');</script>
</body>
</html>

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:root {
--md-sys-color-primary: rgb(219 198 110);
--md-sys-color-surface-tint: rgb(219 198 110);
--md-sys-color-on-primary: rgb(58 48 0);
--md-sys-color-primary-container: rgb(83 70 0);
--md-sys-color-on-primary-container: rgb(248 226 135);
--md-sys-color-secondary: rgb(209 198 161);
--md-sys-color-on-secondary: rgb(54 48 22);
--md-sys-color-secondary-container: rgb(78 71 42);
--md-sys-color-on-secondary-container: rgb(238 226 188);
--md-sys-color-tertiary: rgb(157 212 158);
--md-sys-color-on-tertiary: rgb(1 57 19);
--md-sys-color-tertiary-container: rgb(30 81 40);
--md-sys-color-on-tertiary-container: rgb(184 241 185);
--md-sys-color-error: rgb(255 180 171);
--md-sys-color-on-error: rgb(105 0 5);
--md-sys-color-error-container: rgb(147 0 10);
--md-sys-color-on-error-container: rgb(255 218 214);
--md-sys-color-background: rgb(21 19 11);
--md-sys-color-on-background: rgb(232 226 212);
--md-sys-color-surface: rgb(21 19 11);
--md-sys-color-on-surface: rgb(232 226 212);
--md-sys-color-surface-variant: rgb(75 71 57);
--md-sys-color-on-surface-variant: rgb(205 198 180);
--md-sys-color-outline: rgb(150 144 128);
--md-sys-color-outline-variant: rgb(75 71 57);
--md-sys-color-shadow: rgb(0 0 0);
--md-sys-color-scrim: rgb(0 0 0);
--md-sys-color-inverse-surface: rgb(232 226 212);
--md-sys-color-inverse-on-surface: rgb(51 48 39);
--md-sys-color-inverse-primary: rgb(109 94 15);
--md-sys-color-primary-fixed: rgb(248 226 135);
--md-sys-color-on-primary-fixed: rgb(34 27 0);
--md-sys-color-primary-fixed-dim: rgb(219 198 110);
--md-sys-color-on-primary-fixed-variant: rgb(83 70 0);
--md-sys-color-secondary-fixed: rgb(238 226 188);
--md-sys-color-on-secondary-fixed: rgb(33 27 4);
--md-sys-color-secondary-fixed-dim: rgb(209 198 161);
--md-sys-color-on-secondary-fixed-variant: rgb(78 71 42);
--md-sys-color-tertiary-fixed: rgb(184 241 185);
--md-sys-color-on-tertiary-fixed: rgb(0 33 8);
--md-sys-color-tertiary-fixed-dim: rgb(157 212 158);
--md-sys-color-on-tertiary-fixed-variant: rgb(30 81 40);
--md-sys-color-surface-dim: rgb(21 19 11);
--md-sys-color-surface-bright: rgb(60 57 48);
--md-sys-color-surface-container-lowest: rgb(16 14 7);
--md-sys-color-surface-container-low: rgb(30 27 19);
--md-sys-color-surface-container: rgb(34 32 23);
--md-sys-color-surface-container-high: rgb(45 42 33);
--md-sys-color-surface-container-highest: rgb(56 53 43);
}
#sidebar:has(.navdrawer.standart) {
width: 40% !important;
}
.navdrawer.standart {
width: 100% !important;
}