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server.js
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server.js
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const express = require("express");
const app = express();
const http = require("http");
const path = require("path");
const { Server } = require("socket.io");
const ACTIONS = require("./src/Actions");
const server = http.createServer(app);
const io = new Server(server);
//Deployment
app.use(express.static("build"));
app.use((req, res, next) => {
res.sendFile(path.join(__dirname, "build", "index.html"))
})
const userSocketMap = {};
const getAllConnectedClients = (roomId) => {
return Array.from(io.sockets.adapter.rooms.get(roomId) || []).map((socketId) => {
return {
socketId,
username: userSocketMap[socketId],
}
})
}
io.on("connection", (socket) => {
console.log("socket connected", socket.id);
socket.on(ACTIONS.JOIN, ({ roomId, username }) => {
userSocketMap[socket.id] = username;
socket.join(roomId);
const clients = getAllConnectedClients(roomId);
clients.forEach(({ socketId }) => {
io.to(socketId).emit(ACTIONS.JOINED, {
clients,
username,
socketId: socket.id
})
})
});
socket.on(ACTIONS.CODE_CHANGE, ({ roomId, code }) => {
socket.in(roomId).emit(ACTIONS.CODE_CHANGE, { code })
})
socket.on(ACTIONS.SYNC_CODE, ({ socketId, code }) => {
io.to(socketId).emit(ACTIONS.CODE_CHANGE, { code })
})
socket.on("disconnecting", () => {
const rooms = [...socket.rooms];
rooms.forEach((roomId) => {
socket.in(roomId).emit(ACTIONS.DISCONNECTED, {
socketId: socket.id,
username: userSocketMap[socket.id],
});
})
delete userSocketMap[socket.id];
socket.leave();
console.log("socket disconnected", socket.id);
})
})
const PORT = process.env.PORT || 5000;
server.listen(PORT, () => {
console.log(`Server is running on http://localhost:${PORT}`);
})