gistfile1.js

var util = require('util-ext'),
  	oauth = require('oauth');

module.exports.link  = function(req, res) {
	var url = util.format("https://api.singly.com/oauth/authenticate?client_id=%s&redirect_uri=%s&scope=%s&service=%s",
												process.env.SINGLY_APP_ID,
												process.env.MURALLY_HOST + "/connect/success",
												"https://www.google.com/m8/feeds",
												req.params.service);

	if(req.cookies['s.t'])
		url += util.format("&access_token=%s", req.cookies['s.t']);

	res.redirect(url);
};

module.exports.success  = function(req, res) {
	var closeScript = "<script>var a = {completed: true}; window.opener.window.postMessage(a, '*'); window.close();</script>";

	if(req.cookies['s.t']) {
		return res.send(closeScript);
	}

	var oauth2 = new oauth.OAuth2(process.env.SINGLY_APP_ID, process.env.SINGLY_APP_SECRET, 'https://api.singly.com');

	oauth2.getOAuthAccessToken(req.query.code, {}, function(err, access_token) {
		res.cookie("s.t", access_token);
		res.send(closeScript);
	});
};