LinkUp-P2P-Chat/chatBot/includes/Client.js

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import Hyperswarm from 'hyperswarm';
import EventEmitter from 'node:events';
import b4a from "b4a";
import TextMessage from "./TextMessage.js";
import FileMessage from "./FileMessage.js";
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class Client extends EventEmitter {
constructor(botName) {
super();
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if (!botName) return console.error("Bot Name is not defined!");
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this.botName = botName;
this.swarm = new Hyperswarm();
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this.joinedRooms = new Set(); // Track the rooms the bot has joined
this.currentTopic = null; // Track the current topic
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this.setupSwarm();
process.on('exit', () => {
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console.log('EXIT signal received. Shutting down HyperSwarm...');
this.destroy();
});
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process.on('SIGTERM', () => {
console.log('SIGTERM signal received. Shutting down HyperSwarm...');
this.destroy().then(() => {
console.log('HyperSwarm was shut down. Exiting the process with exit code 0.');
process.exit(0);
});
});
process.on('SIGINT', () => {
console.log('SIGINT signal received. Shutting down HyperSwarm...');
this.destroy().then(() => {
console.log('HyperSwarm was shut down. Exiting the process with exit code 0.');
process.exit(0);
});
});
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}
setupSwarm() {
this.swarm.on('connection', (peer) => {
peer.on('data', message => {
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const messageObj = JSON.parse(message.toString());
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if (this.joinedRooms.has(messageObj.topic)) { // Process message only if it is from a joined room
this.currentTopic = messageObj.topic; // Set the current topic from the incoming message
if (messageObj.type === "message")
this.emit('onMessage', peer, new TextMessage(messageObj.name, messageObj.avatar, messageObj.topic, messageObj.message, messageObj.timestamp));
if (messageObj.type === "file")
this.emit('onFile', peer, new FileMessage(messageObj.name, messageObj.fileName, messageObj.fileUrl, messageObj.fileType, messageObj.avatar, messageObj.topic, messageObj.timestamp));
if (messageObj.type === "icon")
this.emit('onIcon', peer, messageObj);
}
});
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peer.on('error', e => {
this.emit('onError', e);
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console.error(`Connection error: ${e}`)
});
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});
this.swarm.on('update', () => {
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console.log(`Connections count: ${this.swarm.connections.size} / Peers count: ${this.swarm.peers.size}`);
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});
}
joinChatRoom(chatRoomID) {
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if (!chatRoomID || typeof chatRoomID !== 'string') {
return console.error("Invalid chat room ID!");
}
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this.joinedRooms.add(chatRoomID); // Add the room to the list of joined rooms
this.currentTopic = chatRoomID; // Store the current topic
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this.discovery = this.swarm.join(Buffer.from(chatRoomID, 'hex'), { client: true, server: true });
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this.discovery.flushed().then(() => {
console.log(`Bot ${this.botName} joined the chat room.`);
this.emit('onBotJoinRoom');
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});
}
sendTextMessage(message) {
this.sendMessage(TextMessage.new(this, message));
}
sendMessage(message) {
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console.log('Bot name:', this.botName);
const data = message.toJsonString();
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const peers = [...this.swarm.connections];
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for (const peer of peers) peer.write(data);
}
destroy() {
this.swarm.destroy();
console.log(`Bot ${this.botName} disconnected.`);
}
}
export default Client;