server.js

const express = require("express");
const helmet = require("helmet");
const mongoose = require("mongoose");
const cors = require("cors");
const apiRouter = require("./routes");
const app = express();
const port = process.env.PORT || 5000;

app.use(cors());
app.use(helmet());
app.use(express.json({ limit: "50mb" }));
// app.use(upload.array());
app.use("/api", apiRouter);

const connectMongoDb = async () => {
  try {
    mongoose.connect(process.env.MONGO_URI, {
      useNewUrlParser: true,
      useUnifiedTopology: true,
    });
    console.log("Connected to database");
  } catch (err) {
    throw new Error(err);
  }
};
connectMongoDb();

// for ping ;)

app.get("/ping", (req, res) => {
  res.send("success!");
});

// global error handeler
app.use((err, req, res, next) => {
  if (err.message) {
    return res.status(err.statusCode || 500).json({
      error: err.message,
    });
  } else {
    return res.status(500).json({
      error: "Something Went Wrong",
    });
  }
});

app.listen(port, () => {
  console.log(`Example app listening at http://localhost:${port}`);
});