app.js

const express = require('express');
const bodyParser = require('body-parser');
const feedRoutes = require('./routes/feed');
const authRoutes = require('./routes/auth');
const keys = require('./config/keys');
const mongoose = require('mongoose');
const multer = require('multer');
const path = require('path');

const app = express();

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

const fileFilter = (req, file, cb) => {
    if (
        file.mimetype === 'image/png' ||
        file.mimetype === 'image/jpg' ||
        file.mimetype === 'image/jpeg'
    ) {
        cb(null, true);
    } else {
        cb(null, false);
    }
};

// app.use(bodyParser.urlencoded()); // x-www-form-urlencoded <form>
app.use(bodyParser.json()); // application/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('/feed', feedRoutes);
app.use('/auth', authRoutes);


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(keys.MONGO_URI, {useNewUrlParser: true})
.then( result => {
  const server = app.listen(8080);
  const io = require('./socket').init(server); // sets up socket io
  // executes for every client that connects to server
  io.on('connection', socket => {
    console.log('Client connected');
  });
})
.catch(err => console.log(err));