JesusMurF/User.js

## authentication_instagram.js
const passport = require('passport');
const InstagramStrategy = require('passport-instagram').Strategy;
const User = require('../models/User');

const instaConfig = {
  clientID: process.env.CLIENT_ID,
  clientSecret: process.env.CLIENT_SECRET,
  callbackURL: process.env.CALLBACK_URL
};

const instagramInit = function(accessToken, refreshToken, profile, callback) {
  User.findOne({ 'instagram.id': profile.id }, function(err, user) {
    if (err) return callback(err);

    if (user) {
      return callback(null, user); // Check if user already exists
    }

    const {
      id,
      full_name,
      username,
      profile_picture,
      bio,
      website,
      counts: { media, follows, followed_by }
    } = profile._json.data;

    const new_user = new User({
      instagram: {
        id,
        accessToken,
        full_name,
        username,
        profile_picture,
        bio,
        website,
        counts: {
          media,
          follows,
          followed_by
        }
      }
    });

    new_user.save(function(err, user) {
      if (err) {
        throw err;
      }
      return callback(null, user);
    });
  });
};

passport.use(new InstagramStrategy(instaConfig, instagramInit));

passport.serializeUser(function(user, done) {
  done(null, user);
});

passport.deserializeUser(function(obj, done) {
  done(null, obj);
});

function ensureAuthenticated(request, response, next) {
  if (request.isAuthenticated()) {
    return next();
  }
  response.redirect('/');
}

module.exports = ensureAuthenticated;

## db.js
const mongoose = require('mongoose');
mongoose.connect('mongodb://localhost:27017/mydatabase');

## home.handlebars
<h1 class="title">Inicia sesión con Instagram
  <i class="fab fa-instagram"></i>
</h1>

<a class="button is-primary" href="/auth/instagram">
  <span class="icon is-small">
    <i class="fab fa-instagram"></i>
  </span>
  <span>Inicia sesión con Instagram</span>
</a>
<a class="button is-default" href="/profile">Ir al perfil</a>

## main.handlebars
<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bulma/0.6.2/css/bulma.min.css">
  <script defer src="https://use.fontawesome.com/releases/v5.0.6/js/all.js"></script>
  <title>Instagram login app</title>
</head>

<body>

  {{{body}}}

</body>

</html>

## profile.handlebars
<ul>
  <li>{{user.full_name}}</li>
  <li>{{user.username}}</li>
  <li>
    <img src="{{user.profile_picture}}" alt="">
  </li>
  <li>{{user.bio}}</li>
  <li>
    <a href="{{user.website}}">{{user.website}}</a>
  </li>
  <li>media {{user.counts.media}} follows {{user.counts.follows}} followers {{user.counts.followed_by}}</li>
</ul>
<a href="/logout" class="button is-danger">Cerrar sesión</a>

## server.js
const express = require('express');
const session = require('express-session');
const passport = require('passport');
const exphbs = require('express-handlebars');
const bodyParser = require('body-parser');
require('./config/db');

const app = express();

app.engine('handlebars', exphbs({ defaultLayout: 'main' }));
app.set('view engine', 'handlebars');

const ensureAuthenticated = require('./controllers/authentication_instagram');

app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json());
app.use(
  session({
    saveUninitialized: true,
    resave: true,
    secret: 'secret'
  })
);
app.use(passport.initialize());
app.use(passport.session());

app.get('/', (request, response) => {
  response.render('home');
});

app.get('/profile', ensureAuthenticated, (request, response) => {
  const { instagram } = request.user;
  response.render('profile', { user: instagram });
});

app.get('/logout', function(req, res) {
  req.logout();
  res.redirect('/');
});

app.get('/auth/instagram', passport.authenticate('instagram'));

app.get(
  '/auth/instagram/callback',
  passport.authenticate('instagram', {
    successRedirect: '/profile',
    failureRedirect: '/login'
  })
);

const port = 9000;

app.listen(port);

## User.js
const { Schema } = require('mongoose');
const mongoose = require('mongoose');

const User = new Schema({
  instagram: {
    id: String,
    accessToken: String,
    full_name: String,
    username: String,
    profile_picture: String,
    bio: String,
    website: String,
    counts: {
      media: Number,
      follows: Number,
      followed_by: Number
    }
  }
});

module.exports = mongoose.model('User', User);
	const passport = require('passport');
	const InstagramStrategy = require('passport-instagram').Strategy;
	const User = require('../models/User');

	const instaConfig = {
	clientID: process.env.CLIENT_ID,
	clientSecret: process.env.CLIENT_SECRET,
	callbackURL: process.env.CALLBACK_URL
	};

	const instagramInit = function(accessToken, refreshToken, profile, callback) {
	User.findOne({ 'instagram.id': profile.id }, function(err, user) {
	if (err) return callback(err);

	if (user) {
	return callback(null, user); // Check if user already exists
	}

	const {
	id,
	full_name,
	username,
	profile_picture,
	bio,
	website,
	counts: { media, follows, followed_by }
	} = profile._json.data;

	const new_user = new User({
	instagram: {
	id,
	accessToken,
	full_name,
	username,
	profile_picture,
	bio,
	website,
	counts: {
	media,
	follows,
	followed_by
	}
	}
	});

	new_user.save(function(err, user) {
	if (err) {
	throw err;
	}
	return callback(null, user);
	});
	});
	};

	passport.use(new InstagramStrategy(instaConfig, instagramInit));

	passport.serializeUser(function(user, done) {
	done(null, user);
	});

	passport.deserializeUser(function(obj, done) {
	done(null, obj);
	});

	function ensureAuthenticated(request, response, next) {
	if (request.isAuthenticated()) {
	return next();
	}
	response.redirect('/');
	}

	module.exports = ensureAuthenticated;
	const mongoose = require('mongoose');
	mongoose.connect('mongodb://localhost:27017/mydatabase');
	<h1 class="title">Inicia sesión con Instagram
	<i class="fab fa-instagram"></i>
	</h1>

	<a class="button is-primary" href="/auth/instagram">
	<span class="icon is-small">
	<i class="fab fa-instagram"></i>
	</span>
	<span>Inicia sesión con Instagram</span>
	</a>
	<a class="button is-default" href="/profile">Ir al perfil</a>
	<!DOCTYPE html>
	<html>

	<head>
	<meta charset="utf-8">
	<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/bulma/0.6.2/css/bulma.min.css">
	<script defer src="https://use.fontawesome.com/releases/v5.0.6/js/all.js"></script>
	<title>Instagram login app</title>
	</head>

	<body>

	{{{body}}}

	</body>

	</html>
	<ul>
	<li>{{user.full_name}}</li>
	<li>{{user.username}}</li>
	<li>
	<img src="{{user.profile_picture}}" alt="">
	</li>
	<li>{{user.bio}}</li>
	<li>
	<a href="{{user.website}}">{{user.website}}</a>
	</li>
	<li>media {{user.counts.media}} follows {{user.counts.follows}} followers {{user.counts.followed_by}}</li>
	</ul>
	<a href="/logout" class="button is-danger">Cerrar sesión</a>
	const express = require('express');
	const session = require('express-session');
	const passport = require('passport');
	const exphbs = require('express-handlebars');
	const bodyParser = require('body-parser');
	require('./config/db');

	const app = express();

	app.engine('handlebars', exphbs({ defaultLayout: 'main' }));
	app.set('view engine', 'handlebars');

	const ensureAuthenticated = require('./controllers/authentication_instagram');

	app.use(bodyParser.urlencoded({ extended: true }));
	app.use(bodyParser.json());
	app.use(
	session({
	saveUninitialized: true,
	resave: true,
	secret: 'secret'
	})
	);
	app.use(passport.initialize());
	app.use(passport.session());

	app.get('/', (request, response) => {
	response.render('home');
	});

	app.get('/profile', ensureAuthenticated, (request, response) => {
	const { instagram } = request.user;
	response.render('profile', { user: instagram });
	});

	app.get('/logout', function(req, res) {
	req.logout();
	res.redirect('/');
	});

	app.get('/auth/instagram', passport.authenticate('instagram'));

	app.get(
	'/auth/instagram/callback',
	passport.authenticate('instagram', {
	successRedirect: '/profile',
	failureRedirect: '/login'
	})
	);

	const port = 9000;

	app.listen(port);
	const { Schema } = require('mongoose');
	const mongoose = require('mongoose');

	const User = new Schema({
	instagram: {
	id: String,
	accessToken: String,
	full_name: String,
	username: String,
	profile_picture: String,
	bio: String,
	website: String,
	counts: {
	media: Number,
	follows: Number,
	followed_by: Number
	}
	}
	});

	module.exports = mongoose.model('User', User);