server.js

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

//connect db
connectDB();

app.use(bodyParser.json());

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

//Serve static assests in production
if (process.env.NODE_ENV === "production") {
  // Set static folder
  app.use(express.static("client/build"));

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

const PORT = process.env.PORT || 7000;
app.listen(PORT, () => console.log(`Server started on port ${PORT}`));