const express = require("express");
const cors = require("cors");
const cookieParser = require("cookie-parser");
const { Server } = require("socket.io");
const { createServer } = require("http");
const userRoute = require("./Routes/user.routes.js");
const { checkAuthenticated } = require("./Middlewares/authentication.js");
const dotenv = require("dotenv");

dotenv.config({
  path: "./.env",
});

const app = express();

const corsOptions = {
  origin: process.env.FRONTEND_URI,
  methods: "GET,HEAD,PUT,PATCH,POST,DELETE",
  credentials: true,
};

const server = createServer(app);

const io = new Server(server, {
  cors: {
    origin: process.env.FRONTEND_URI,
    methods: ["GET", "PUT", "POST", "PATCH", "DELETE"],
    credentials: true,
  },
});

app.use(cors(corsOptions));
app.use(express.json({ limit: "16kb" }));
app.use(express.urlencoded({ extended: true, limit: "16kb" }));
app.use(express.static("public"));
app.use(cookieParser());

app.get("/", (req, res) => {
  return res.send("Hiddskpkpk...");
});

app.use("/api/v1", userRoute);

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("message", ({ message, room }) => {
    // console.log(message);
    // console.log("Message is : ", message, "Room is : ", room);
    //for sending the message all the users that are connected < --- > io.emit("receive-message", message);
    //for sending the message for all the user except us  <----> socket.broadcast.emit("receive-message", message);
    socket.join(room);
    io.to(room).emit("receive-message", message); // For sending the message for perticular room or user
  });

  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 });
  });
});

module.exports = server;