server.js

//Imports.
const express = require("express");
const morgan = require("morgan");
const path = require("path");
const mongoose = require("mongoose");
const bodyParser = require("body-parser");
const passport = require("passport");
const users = require("./routes/api/users");
const posts = require("./routes/api/posts");
const comments = require("./routes/api/comments");


const PORT = process.env.PORT || 3001;

const app = express();

// Bodyparser middleware
app.use(
    bodyParser.urlencoded({
      extended: false
    })
  );
  app.use(bodyParser.json());

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

//Server logger set to dev for consice and colored responses.
app.use(morgan("dev"));

//Connect to the mongo database.
mongoose.connect(
    process.env.MONGODB_URI || "mongodb://localhost/rateadate",
    {
        //Required options to remove mongoose deprication errors.
        useNewUrlParser: true,
        useUnifiedTopology: true,
        useCreateIndex: true,
        useFindAndModify: false
    }
).then(() => console.log("MongoDB successfully connected"));

// Passport middleware
app.use(passport.initialize());
// Passport config
require("./config/passport")(passport);
// Routes
app.use("/api/users", users);
app.use("/api/posts", posts);
app.use("/api/comments", comments);

// Send every request to the React app
// Define any API routes before this runs
app.get("*", function(req, res) {
    res.sendFile(path.join(__dirname, "./client/build/index.html"));
});

//Start the server.
app.listen(PORT, function() {
    console.log(`🌎 ==> API server now on port ${PORT}!`);
});