miki2826/express_passport_link_compatible.js

## express_passport_link_compatible.js
app.get('/auth/facebook', (req, res, next) => {
    passport.authenticate('facebook', {
        callbackURL: 'http://localhost:3000/auth/facebook/callback?' +
          (req.query.redirect_uri ? '&redirect_uri=' + req.query.redirect_uri : '') +
          (req.query.account_linking_token ? '&account_linking_token=' + req.query.account_linking_token : ''),
        scope: ['public_profile', 'email', 'user_friends', 'user_likes']
    })(req, res, next);
});

app.get('/auth/callback/facebook', (req, res, next) => {
    passport.authenticate('facebook', {
        callbackURL: 'http://localhost:3000/auth/facebook/callback?' +
          (req.query.redirect_uri ? '&redirect_uri=' + req.query.redirect_uri : '') +
          (req.query.account_linking_token ? '&account_linking_token=' + req.query.account_linking_token : ''),
        scope: ['public_profile', 'email', 'user_friends', 'user_likes']
    })(req, res, next);
  }, (req, res) => {
    // Successful authentication - link the accounts and redirect.
    botly.getPSID(req.query.account_linking_token, (err, body) => {
        //You should handle errors
        var PSID = body.recipient;
        req.user.update({PSID: req.user}, (err, data) => {
            //link done, let's redirect
            res.redirect(req.query.redirect_uri + '&authorization_code=' + req.user.id);
        });
    });
});
	app.get('/auth/facebook', (req, res, next) => {
	passport.authenticate('facebook', {
	callbackURL: 'http://localhost:3000/auth/facebook/callback?' +
	(req.query.redirect_uri ? '&redirect_uri=' + req.query.redirect_uri : '') +
	(req.query.account_linking_token ? '&account_linking_token=' + req.query.account_linking_token : ''),
	scope: ['public_profile', 'email', 'user_friends', 'user_likes']
	})(req, res, next);
	});

	app.get('/auth/callback/facebook', (req, res, next) => {
	passport.authenticate('facebook', {
	callbackURL: 'http://localhost:3000/auth/facebook/callback?' +
	(req.query.redirect_uri ? '&redirect_uri=' + req.query.redirect_uri : '') +
	(req.query.account_linking_token ? '&account_linking_token=' + req.query.account_linking_token : ''),
	scope: ['public_profile', 'email', 'user_friends', 'user_likes']
	})(req, res, next);
	}, (req, res) => {
	// Successful authentication - link the accounts and redirect.
	botly.getPSID(req.query.account_linking_token, (err, body) => {
	//You should handle errors
	var PSID = body.recipient;
	req.user.update({PSID: req.user}, (err, data) => {
	//link done, let's redirect
	res.redirect(req.query.redirect_uri + '&authorization_code=' + req.user.id);
	});
	});
	});