server.js

const express = require("express");
const cors = require("cors");
require("dotenv").config();
require("./db/conn");
const userRouter = require("./routes/userRoutes");
const doctorRouter = require("./routes/doctorRoutes");
const appointRouter = require("./routes/appointRoutes");
const path = require("path");
const notificationRouter = require("./routes/notificationRouter");
const { Server } = require("socket.io");

const app = express();
const port = process.env.PORT || 5000;

app.use(cors());
app.use(express.json());
app.use("/api/user", userRouter);
app.use("/api/doctor", doctorRouter);
app.use("/api/appointment", appointRouter);
app.use("/api/notification", notificationRouter);
app.use(express.static(path.join(__dirname, "./client/build")));

app.get("*", (req, res) => {
  res.sendFile(path.join(__dirname, "./client/build/index.html"));
});

const io = new Server(8000, {
  cors: true,
});

const emailToSocketIdMap = new Map();
const socketidToEmailMap = new Map();

io.on("connection", (socket) => {
  // console.log(`Socket Connected`, socket.id);
  socket.on("room:join", (data) => {
    const { email, room } = data;
    emailToSocketIdMap.set(email, socket.id);
    socketidToEmailMap.set(socket.id, email);
    io.to(room).emit("user:joined", { email, id: socket.id });
    socket.join(room);
    io.to(socket.id).emit("room:join", data);
  });

  socket.on("user:call", ({ to, offer }) => {
    io.to(to).emit("incomming:call", { from: socket.id, offer });
  });

  socket.on("call:accepted", ({ to, ans }) => {
    io.to(to).emit("call:accepted", { from: socket.id, ans });
  });

  socket.on("peer:nego:needed", ({ to, offer }) => {
    // console.log("peer:nego:needed", offer);
    io.to(to).emit("peer:nego:needed", { from: socket.id, offer });
  });

  socket.on("peer:nego:done", ({ to, ans }) => {
    // console.log("peer:nego:done", ans);
    io.to(to).emit("peer:nego:final", { from: socket.id, ans });
  });
});


app.listen(port, () => {});