server.js

const express = require("express");
const path = require("path");
const bodyParser= require("body-parser");
const mongoose = require("mongoose");
const PORT = process.env.PORT || 3001;
const app = express();


app.use(express.urlencoded({extended: true}));
app.use(bodyParser.json());
app.use(express.json());

// Serve up static assets (usually on heroku)
if (process.env.NODE_ENV === "production") {
    app.use(express.static("client/build"));
  }

  //require routes
require("./routes/api")(app);

// If deployed, use the deployed database. Otherwise use the local database
mongoose.connect(process.env.MONGODB_URI || "mongodb://localhost/googlebooksdb", { useNewUrlParser: true, useUnifiedTopology: true });

app.use((req, res, next) => {
    res.send("Welcome to Express");
});

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


app.listen(PORT, function(){
    console.log(`API Server now listening on PORT ${PORT}!`)
});

  module.exports= app;