app.js

const express = require("express");
const mongoose = require("mongoose");
const path = require("path");
const multer = require("multer");
const swaggerJsDoc = require("swagger-jsdoc");
const swaggerUi = require("swagger-ui-express");
const swaggerDocument = require("./swagger-output.json");

const feedRoutes = require("./routes/feed.js");
const authRoutes = require("./routes/auth.js");

const bodyParser = require("body-parser");

const MONGODB_URI = `mongodb+srv://${process.env.MONGO_USER}:${process.env.MONGO_PASSWORD}@cluster6.kzpmnit.mongodb.net/?retryWrites=true&w=majority&appName=Cluster6`;

const app = express();

const fileStorage = multer.diskStorage({
  destination: (req, file, cb) => {
    cb(null, "images");
  },
  filename: (req, file, cb) => {
    cb(
      null,
      new Date().toISOString().replace(/:/g, "-") + "-" + file.originalname
    );
  },
});

const fileFilter = (req, file, cb) => {
  if (
    file.mimetype === "image/jpg" ||
    file.mimetype === "image/jpeg" ||
    file.mimetype === "image/png"
  ) {
    cb(null, true);
  }
  cb(null, false);
};
//application/json parse
app.use(bodyParser.json());
app.use(
  multer({ storage: fileStorage, fileFilter: fileFilter }).single("image")
);
app.use("/images", express.static(path.join(__dirname, "images")));

app.use((req, res, next) => {
  res.setHeader("Access-Control-Allow-Origin", "*");
  res.setHeader("Access-Control-Allow-Methods", "GET,POST,PUT,PATCH,DELETE");
  res.setHeader("Access-Control-Allow-Headers", "Content-Type,Authorization");
  next();
});

app.use(feedRoutes);
app.use(authRoutes);
app.use("/api-docs", swaggerUi.serve, swaggerUi.setup(swaggerDocument));

app.use((error, req, res, next) => {
  console.log(error);
  const status = error.statusCode || 500;
  const message = error.message;
  const data = error.data;
  res.status(status).json({ message: message, data: data });
});

mongoose
  .connect(MONGODB_URI)
  .then((result) => {
    app.listen(process.env.PORT || 3000);
  })
  .catch((err) => {
    console.log(err);
  });