testing EventEmitter
This commit is contained in:
Raven Scott
parent
20aa777270
commit
9e6c803347
203
app.js
203
app.js
@ -1,3 +1,4 @@
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import { EventEmitter } from 'events';
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import Hyperswarm from 'hyperswarm';
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import crypto from 'hypercore-crypto';
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import b4a from 'b4a';
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@ -12,16 +13,20 @@ const drive = new Hyperdrive(store);
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await drive.ready();
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let swarm;
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let userName = 'Anonymous';
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let userAvatar = '';
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let registeredUsers = JSON.parse(localStorage.getItem('registeredUsers')) || {};
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let peerCount = 0;
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let currentRoom = null;
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class ChatHandler extends EventEmitter {
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constructor() {
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super();
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this.userName = 'Anonymous';
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this.userAvatar = '';
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this.registeredUsers = JSON.parse(localStorage.getItem('registeredUsers')) || {};
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this.peerCount = 0;
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this.currentRoom = null;
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this.swarm = new Hyperswarm();
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async function initialize() {
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swarm = new Hyperswarm();
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this.initialize();
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}
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async initialize() {
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const servePort = 1337;
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const serve = new ServeDrive({ port: servePort, get: ({ key, filename, version }) => drive });
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await serve.ready();
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@ -36,7 +41,7 @@ async function initialize() {
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const removeRoomBtn = document.querySelector('#remove-room-btn');
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if (registerForm) {
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registerForm.addEventListener('submit', registerUser);
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registerForm.addEventListener('submit', (e) => this.registerUser(e));
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}
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if (selectAvatarButton) {
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selectAvatarButton.addEventListener('click', () => {
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@ -44,19 +49,19 @@ async function initialize() {
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});
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}
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if (createChatRoomButton) {
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createChatRoomButton.addEventListener('click', createChatRoom);
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createChatRoomButton.addEventListener('click', () => this.createChatRoom());
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}
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if (joinChatRoomButton) {
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joinChatRoomButton.addEventListener('click', joinChatRoom);
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joinChatRoomButton.addEventListener('click', (e) => this.joinChatRoom(e));
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}
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if (messageForm) {
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messageForm.addEventListener('submit', sendMessage);
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messageForm.addEventListener('submit', (e) => this.sendMessage(e));
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}
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if (toggleSetupBtn) {
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toggleSetupBtn.addEventListener('click', toggleSetupView);
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toggleSetupBtn.addEventListener('click', () => this.toggleSetupView());
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}
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if (removeRoomBtn) {
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removeRoomBtn.addEventListener('click', leaveRoom);
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removeRoomBtn.addEventListener('click', () => this.leaveRoom());
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}
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const registerDiv = document.querySelector('#register');
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@ -64,52 +69,43 @@ async function initialize() {
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registerDiv.classList.remove('hidden');
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}
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swarm.on('connection', async (connection, info) => {
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peerCount++;
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updatePeerCount();
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this.swarm.on('connection', async (connection, info) => {
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this.peerCount++;
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this.updatePeerCount();
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const iconBuffer = await drive.get(`/icons/${userName}.png`);
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const iconBuffer = await drive.get(`/icons/${this.userName}.png`);
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if (iconBuffer) {
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const iconMessage = JSON.stringify({
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type: 'icon',
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username: userName,
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username: this.userName,
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avatar: iconBuffer.toString('base64'),
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});
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connection.write(iconMessage);
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}
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connection.on('data', async (data) => {
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const messageObj = JSON.parse(data.toString());
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if (messageObj.type === 'icon') {
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const username = messageObj.username;
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const avatarBuffer = Buffer.from(messageObj.avatar, 'base64');
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await drive.put(`/icons/${username}.png`, avatarBuffer);
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updateIcon(username, avatarBuffer);
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} else {
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onMessageAdded(messageObj.name, messageObj.message, messageObj.avatar);
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}
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});
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connection.on('data', (data) => this.emit('onMessage', data, connection));
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connection.on('close', () => {
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peerCount--;
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updatePeerCount();
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this.peerCount--;
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this.updatePeerCount();
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});
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});
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swarm.on('error', (err) => {
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this.swarm.on('error', (err) => {
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console.error('Swarm error:', err);
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});
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swarm.on('close', () => {
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this.swarm.on('close', () => {
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console.log('Swarm closed');
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});
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}
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function registerUser(e) {
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this.on('onMessage', async (data, connection) => this.handleMessage(data, connection));
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}
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async registerUser(e) {
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e.preventDefault();
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const regUsername = document.querySelector('#reg-username').value;
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if (registeredUsers[regUsername]) {
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if (this.registeredUsers[regUsername]) {
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alert('Username already taken. Please choose another.');
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return;
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}
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@ -120,18 +116,18 @@ function registerUser(e) {
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reader.onload = (event) => {
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const buffer = new Uint8Array(event.target.result);
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drive.put(`/icons/${regUsername}.png`, buffer);
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userAvatar = URL.createObjectURL(new Blob([buffer]));
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registeredUsers[regUsername] = userAvatar;
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localStorage.setItem('registeredUsers', JSON.stringify(registeredUsers));
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continueRegistration(regUsername);
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this.userAvatar = URL.createObjectURL(new Blob([buffer]));
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this.registeredUsers[regUsername] = this.userAvatar;
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localStorage.setItem('registeredUsers', JSON.stringify(this.registeredUsers));
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this.continueRegistration(regUsername);
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};
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reader.readAsArrayBuffer(avatarFile);
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} else {
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continueRegistration(regUsername);
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this.continueRegistration(regUsername);
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}
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}
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}
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async function continueRegistration(regUsername) {
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async continueRegistration(regUsername) {
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const loadingDiv = document.querySelector('#loading');
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const setupDiv = document.querySelector('#setup');
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@ -140,39 +136,39 @@ async function continueRegistration(regUsername) {
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return;
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}
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userName = regUsername;
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this.userName = regUsername;
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setupDiv.classList.remove('hidden');
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document.querySelector('#register').classList.add('hidden');
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loadingDiv.classList.add('hidden');
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const randomTopic = crypto.randomBytes(32);
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document.querySelector('#chat-room-topic').innerText = truncateHash(b4a.toString(randomTopic, 'hex'));
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}
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document.querySelector('#chat-room-topic').innerText = this.truncateHash(b4a.toString(randomTopic, 'hex'));
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}
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async function createChatRoom() {
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async createChatRoom() {
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const topicBuffer = crypto.randomBytes(32);
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const topic = b4a.toString(topicBuffer, 'hex');
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addRoomToList(topic);
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joinSwarm(topicBuffer);
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}
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this.addRoomToList(topic);
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this.joinSwarm(topicBuffer);
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}
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async function joinChatRoom(e) {
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async joinChatRoom(e) {
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e.preventDefault();
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const topicStr = document.querySelector('#join-chat-room-topic').value;
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const topicBuffer = b4a.from(topicStr, 'hex');
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addRoomToList(topicStr);
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joinSwarm(topicBuffer);
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}
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this.addRoomToList(topicStr);
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this.joinSwarm(topicBuffer);
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}
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async function joinSwarm(topicBuffer) {
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if (currentRoom) {
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currentRoom.destroy();
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async joinSwarm(topicBuffer) {
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if (this.currentRoom) {
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this.currentRoom.destroy();
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}
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document.querySelector('#setup').classList.add('hidden');
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document.querySelector('#loading').classList.remove('hidden');
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const discovery = swarm.join(topicBuffer, { client: true, server: true });
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const discovery = this.swarm.join(topicBuffer, { client: true, server: true });
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await discovery.flushed();
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const topic = b4a.toString(topicBuffer, 'hex');
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@ -180,65 +176,77 @@ async function joinSwarm(topicBuffer) {
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document.querySelector('#loading').classList.add('hidden');
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document.querySelector('#chat').classList.remove('hidden');
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currentRoom = discovery;
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clearMessages();
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}
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this.currentRoom = discovery;
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this.clearMessages();
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}
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function addRoomToList(topic) {
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addRoomToList(topic) {
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const roomList = document.querySelector('#room-list');
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const roomItem = document.createElement('li');
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roomItem.textContent = truncateHash(topic);
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roomItem.textContent = this.truncateHash(topic);
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roomItem.dataset.topic = topic;
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roomItem.addEventListener('click', () => switchRoom(topic));
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roomItem.addEventListener('click', () => this.switchRoom(topic));
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roomList.appendChild(roomItem);
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}
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}
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function switchRoom(topic) {
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switchRoom(topic) {
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const topicBuffer = b4a.from(topic, 'hex');
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joinSwarm(topicBuffer);
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}
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this.joinSwarm(topicBuffer);
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}
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function leaveRoom() {
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if (currentRoom) {
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const topic = b4a.toString(currentRoom.topic, 'hex');
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leaveRoom() {
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if (this.currentRoom) {
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const topic = b4a.toString(this.currentRoom.topic, 'hex');
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const roomItem = document.querySelector(`li[data-topic="${topic}"]`);
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if (roomItem) {
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roomItem.remove();
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}
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currentRoom.destroy();
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currentRoom = null;
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this.currentRoom.destroy();
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this.currentRoom = null;
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}
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document.querySelector('#chat').classList.add('hidden');
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document.querySelector('#setup').classList.remove('hidden');
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}
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}
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function sendMessage(e) {
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sendMessage(e) {
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e.preventDefault();
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const message = document.querySelector('#message').value;
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document.querySelector('#message').value = '';
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onMessageAdded(userName, message, userAvatar);
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this.onMessageAdded(this.userName, message, this.userAvatar);
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const messageObj = JSON.stringify({
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type: 'message',
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name: userName,
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name: this.userName,
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message,
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avatar: userAvatar,
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avatar: this.userAvatar,
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timestamp: Date.now(),
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});
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const peers = [...swarm.connections];
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const peers = [...this.swarm.connections];
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for (const peer of peers) {
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peer.write(messageObj);
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}
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}
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}
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function scrollToBottom() {
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async handleMessage(data, connection) {
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const messageObj = JSON.parse(data.toString());
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if (messageObj.type === 'icon') {
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const username = messageObj.username;
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const avatarBuffer = Buffer.from(messageObj.avatar, 'base64');
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await drive.put(`/icons/${username}.png`, avatarBuffer);
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this.updateIcon(username, avatarBuffer);
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} else {
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this.onMessageAdded(messageObj.name, messageObj.message, messageObj.avatar);
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}
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}
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scrollToBottom() {
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var container = document.getElementById("messages-container");
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container.scrollTop = container.scrollHeight;
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}
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}
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function onMessageAdded(from, message, avatar) {
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onMessageAdded(from, message, avatar) {
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const $div = document.createElement('div');
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$div.classList.add('message');
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@ -265,30 +273,35 @@ function onMessageAdded(from, message, avatar) {
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$div.appendChild($content);
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document.querySelector('#messages').appendChild($div);
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scrollToBottom();
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}
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this.scrollToBottom();
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}
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function truncateHash(hash) {
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truncateHash(hash) {
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return `${hash.slice(0, 6)}...${hash.slice(-6)}`;
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}
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}
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async function updateIcon(username, avatarBuffer) {
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async updateIcon(username, avatarBuffer) {
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const userIcon = document.querySelector(`img[src*="${username}.png"]`);
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if (userIcon) {
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userIcon.src = URL.createObjectURL(new Blob([avatarBuffer]));
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}
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}
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}
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function clearMessages() {
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clearMessages() {
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const messagesContainer = document.querySelector('#messages');
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while (messagesContainer.firstChild) {
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messagesContainer.removeChild(messagesContainer.firstChild);
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}
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}
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}
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function toggleSetupView() {
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toggleSetupView() {
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const setupDiv = document.querySelector('#setup');
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setupDiv.classList.toggle('hidden');
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}
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updatePeerCount() {
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// Implement this method based on your needs to update the peer count in the UI
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}
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}
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initialize();
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new ChatHandler();
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