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server.js
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server.js
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require("dotenv").config();
const express = require("express");
const http = require("http");
const app = express();
const server = http.createServer(app);
const socket = require("socket.io");
const io = socket(server, {
cors: {
origin: "*",
},
});
const cors = require("cors");
const mongoose = require("mongoose");
const authRoute = require("./routes/route_auth");
const emailRoute = require("./routes/route_email");
const bodyParser = require("body-parser");
const users = {};
const socketToRoom = {};
io.on("connection", (socket) => {
socket.on("join room", (roomID) => {
if (users[roomID]) {
const length = users[roomID].length;
if (length === 4) {
socket.emit("room full");
return;
}
users[roomID].push(socket.id);
} else {
users[roomID] = [socket.id];
}
socketToRoom[socket.id] = roomID;
const usersInThisRoom = users[roomID].filter((id) => id !== socket.id);
socket.emit("all users", usersInThisRoom);
});
socket.on("sending signal", (payload) => {
io.to(payload.userToSignal).emit("user joined", {
signal: payload.signal,
callerID: payload.callerID,
});
});
socket.on("returning signal", (payload) => {
io.to(payload.callerID).emit("receiving returned signal", {
signal: payload.signal,
id: socket.id,
});
});
socket.on("disconnect", () => {
const roomID = socketToRoom[socket.id];
let room = users[roomID];
if (room) {
room = room.filter((id) => id !== socket.id);
users[roomID] = room;
}
socket.broadcast.emit("user left", socket.id);
});
});
const PORT = process.env.PORT || 3000;
app.use(bodyParser.json());
//connecting with database
db = process.env.DATABASE_URI;
mongoose
.connect(db, {
useNewUrlParser: true,
useUnifiedTopology: true,
useCreateIndex: true,
useFindAndModify: false,
})
.then(() => {
console.log("Connection is successfull");
})
.catch((err) => {
console.log(err);
});
// middlewares
app.use(cors());
app.use("/api", authRoute);
app.use("/api", emailRoute);
server.listen(PORT, () => {
console.log(`The app is running at ${PORT}`);
});