app.js

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


const MONGODB_URI = 'mongodb://localhost:27017/posts';

mongoose.Promise = global.Promise;
mongoose.connect(MONGODB_URI, {useNewUrlParser: true}).then((db) => {
    console.log('MONGO connectes');

}).catch(error => console.log(error));

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/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', 'OPTIONS, 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;
    const message = error.message;
    const data = error.data;
    res.status(status).json({message: message, data: data});
}));

const port = process.env.PORT || 8080;

const server = app.listen(port, () => {

    const io = require('./socket').init(server);
    io.on('connection', socket => {
        console.log('client connected');
    });

});