index.js

const express = require("express");
const mongoose = require("mongoose");
const bodyParser = require("body-parser");
const path = require("path");
var passport = require("passport");
var authenticate = require("./authenticate");
require("dotenv").config();

// Loading routers
const productRouter = require("./routes/api/productRouter");
const userRouter = require("./routes/api/userRouter");
const bidRouter = require("./routes/api/bidRouter");
var favoriteRouter = require("./routes/api/favoriteRouter");
const shop = require("./routes/api/shop");
const canteen = require("./routes/api/canteen");
const ask = require("./routes/api/ask");

(DEFAULT_BODY_SIZE_LIMIT = 1024 * 1024 * 10), (DEFAULT_PARAMETER_LIMIT = 10000);

const bodyParserJsonConfig = () => ({
  parameterLimit: DEFAULT_PARAMETER_LIMIT,
  limit: DEFAULT_BODY_SIZE_LIMIT
});

const app = express();

app.use(bodyParser.json(bodyParserJsonConfig()));

// Bodyparser Middleware
app.use(bodyParser.json());

// DB config
const mongoURI = require("./config/keys").mongoURI;

// Connect to mongo
mongoose
  .connect(mongoURI, {
    useNewUrlParser: true,
    useCreateIndex: true,
    useFindAndModify: false
  })
  .then(() => {
    console.log("MongoDB Connected");
  })
  .catch(err => console.log(err));
app.use(function(req, res, next) {
  res.header("Access-Control-Allow-Origin", "*");
  res.header("Access-Control-Allow-Methods", "GET, PUT, POST");
  res.header(
    "Access-Control-Allow-Headers",
    "Origin, X-Requested-With, Content-Type, Accept"
  );
  next();
});

app.use(passport.initialize());

// Use routes
app.use("/api/products", productRouter);
app.use("/api/users", userRouter);
app.use("/api/bids", bidRouter);
app.use("/api/favorites", favoriteRouter);
app.use("/api/ask", ask);
app.use("/api/shop", shop);
app.use("/api/canteen", canteen);
// app.use("/api/", ask);

// Serve static assets if 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 || 5000;

app.listen(port, "0.0.0.0", () =>
  console.log(`Server started running on port ${port}`)
);