app.js

const express = require("express");
const cors = require("cors");
const { config } = require("./config");
// Initiliseing server application with express
const app = express();

app.use(
  cors({
    origin: [config.PROD_URL, config.LOCAL_URL],
    credentials: true,
  })
);
// middleware for getting data from body in json format
app.use(express.json());
// middleware for getting data as a search queries
app.use(express.urlencoded({ extended: true }));

// mongoose connection
require("./config/db").connect();

// for reading cookies and handling
const cookieParser = require("cookie-parser");
app.use(cookieParser());

// handaling file uploading
const fileUpload = require("express-fileupload");
app.use(
  fileUpload({
    useTempFiles: true,
    tempFileDir: "tmp",
  })
);

// morgan middleware to check response time when we hit an api route
const morgan = require("morgan");
morgan(":method :url :status :res[content-length] - :response-time ms");
app.use(require("morgan")("tiny"));

//swagger api docs
const Yaml = require("yamljs");
const swaggerUi = require("swagger-ui-express");
const swaggerDocument = Yaml.load("./swagger.yaml");
app.use("/api-docs", swaggerUi.serve, swaggerUi.setup(swaggerDocument));

//import all routes
const home = require("./routes/home");
const user = require("./routes/user");
const product = require("./routes/product");
const payment = require("./routes/payment");
const order = require("./routes/order");

app.get("/ping", (req, res) => {
  res.status(200).json({
    message: "pong...",
  });
});

// router middleware
app.use("/api/v1/", home);
app.use("/api/v1/", user);
app.use("/api/v1/", product);
app.use("/api/v1/", payment);
app.use("/api/v1/", order);

// removeing a directory
const fse = require("fs-extra");

setInterval(() => {
  fse.pathExists("./tmp", (err, exists) => {
    if (exists) {
      setTimeout(() => {
        fse
          .remove("./tmp")
          .then(() => console.log("Done"))
          .catch((e) => console.log(e));
      }, Date.now() + 1 * 60 * 60 * 1000);
    }
  });
}, 1000 * 10);

// exporting the app
module.exports = app;