server.js

const express = require("express");
const mongoose = require("mongoose");
const config = require("config");
const cors = require("cors");
const http = require("http");
const bodyParser = require("body-parser");
const socketIo = require("socket.io");

mongoose.connect(
    "mongodb+srv://x4lva:dimonchak@cluster0.lyxpu.mongodb.net/myFirstDatabase?retryWrites=true&w=majority",
    {
        useUnifiedTopology: true,
        useNewUrlParser: true,
    }
);

mongoose.set("useFindAndModify", false);

const PORT = config.get("port") || "5000";
const app = express();

app.use(bodyParser.json());
app.use(cors());
app.use(
    bodyParser.urlencoded({
        extended: false,
    })
);
const server = http.createServer(app);

const io = socketIo(server);

server.listen(PORT, () => {
    console.log("Server is running on port: " + PORT);
});

io.on("connection", (socket) => {
    // socket.on("mouse-scroll", (res) => {
    //     socket.broadcast.emit("scrolled", { x: res.x, y: res.y });
    // });

    socket.on("board-connect", (res) => {
        socket.join(res);
    });

    socket.on("board-update", (res) => {
        socket.in(res.boardId).emit("board-updated", res.userName);
    });
    socket.on("board-update-todos", (res) => {
        socket.in(res.boardId).emit("board-updated-todos", res.userName);
    });

    socket.on("board-message", (res) => {
        socket.in(res.boardId).emit("board-send-message", res.message);
    });

    socket.on("board-user", (res) => {
        socket.in(res).emit("board-updated-user");
    });

    socket.on("board-disconnect", (res) => {
        socket.leave(res);
    });
});

app.use("/board", require("./routes/Board"));
app.use("/user", require("./routes/User"));
app.use("/todo", require("./routes/Todo"));
app.use("/todoitem", require("./routes/TodoItem"));
app.use("/message", require("./routes/BoardMessage"));