server.js

const express = require("express");
const app = express();
const connectDB = require("./config/db");
const cors = require("cors");
const bodyParser = require("body-parser");
const path = require("path");

const PORT = process.env.PORT || 5000;

//Connect the database
connectDB();

// This is handle the cors requests error
app.use(cors());

// init Middleware
app.use(express.json());
app.use(bodyParser.json());

// Define routes

app.use("/api/users", require("./route/api/users"));
app.use("/api/auth", require("./route/api/auth"));
app.use("/api/profile", require("./route/api/profile"));
app.use("/api/posts", require("./route/api/posts"));

// Server static assets in production

if (process.env.NODE_ENV === "production") {
  app.use(express.static("client/build"));
  app.get("*", (req, res) => {
    res.sendFile(path.resolve(__dirname, "client", "build", "index.html"));
  });
}

app.listen(PORT, () => console.log(`Server is started on port ${PORT}`));