skeleton for twitter integration via passport

config.default.js

@@ -13,6 +13,10 @@ var config = {
 		options: {
 			
 		}
+	},
+	"twitter": {
+		"key": '',
+		"secret": ''
 	}
 }
 

package.json

@@ -20,6 +20,7 @@
       "crypto": "0.0.3",
       "passport": "0.1.16",
       "passport-local": "0.1.6",
+      "passport-twitter": "0.1.4",
       "less-middleware": "0.1.11"
     },
   "devDependencies": {},

public/templates/footer.tpl

@@ -45,6 +45,7 @@
 		});
 		socket.emit('api:user.get', { fields: ['username', 'picture'] });
 		socket.on('api:user.get', function(data) {
+			console.log(data);
 			if (data.uid > 0) {
 				var	gravatar = document.createElement('img'),
 					name = document.createElement('span')

src/user.js

@@ -32,6 +32,7 @@ var	config = require('../config.js'),
 				
 				if (returnData.picture !== undefined) {
 					var	md5sum = crypto.createHash('md5');
+					if (!returnData.email) returnData.email = '';
 					md5sum.update(returnData.email.toLowerCase());
 					returnData.picture = 'http://www.gravatar.com/avatar/' + md5sum.digest('hex') + '?s=24';
 					if (removeEmail) delete returnData.email;
@@ -123,6 +124,31 @@ var	config = require('../config.js'),
 		}
 	}
 
+	User.loginViaTwitter = function(twid, handle, callback) {
+		User.get_uid_by_twitter_id(twid, function(uid) {
+			if (uid !== null) {
+				// Existing User
+				callback(null, {
+					uid: uid
+				});
+			} else {
+				// New User
+				User.create(handle, null, null, function(err, uid) {
+					if (err !== null) {
+						callback(err);
+					} else {
+						// Save twitter-specific information to the user
+						RDB.set('uid:' + uid + ':twid', twid);
+						RDB.set('twid:' + twid + ':uid', uid);
+						callback(null, {
+							uid: uid
+						});
+					}
+				});
+			}
+		})
+	}
+
 	User.logout = function(sessionID, callback) {
 		User.get_uid_by_session(sessionID, function(uid) {
 			if (uid) {
@@ -142,9 +168,11 @@ var	config = require('../config.js'),
 			RDB.incr('global:next_user_id', function(uid) {
 				RDB.set('username:' + username + ':uid', uid);
 				RDB.set('uid:' + uid + ':username', username);
-				RDB.set('uid:' + uid + ':password', password);
-				RDB.set('uid:' + uid + ':email', email);
-				RDB.set('email:' + email, uid);
+				if (password) RDB.set('uid:' + uid + ':password', password);
+				if (email) {
+					RDB.set('uid:' + uid + ':email', email);
+					RDB.set('email:' + email, uid);
+				}
 				
 				RDB.incr('user:count', function(count) {
 					io.sockets.emit('user.count', {count: count});
@@ -190,6 +218,12 @@ var	config = require('../config.js'),
 		RDB.get('sess:' + session + ':uid', callback);
 	};
 
+	User.get_uid_by_twitter_id = function(twid, callback) {
+		RDB.get('twid:' + twid + ':uid', function(uid) {
+			callback(uid);
+		});
+	}
+
 	User.session_ping = function(sessionID, uid) {
 		// Start, replace, or extend a session
 		RDB.get('sess:' + sessionID, function(session) {

src/webserver.js

@@ -7,7 +7,8 @@ var express = require('express'),
     redis = require('redis'),
 	redisServer = redis.createClient(config.redis.port, config.redis.host, config.redis.options),
 	passport = require('passport'),
-	passportLocal = require('passport-local').Strategy;
+	passportLocal = require('passport-local').Strategy,
+	passportTwitter = require('passport-twitter').Strategy;
 
 passport.use(new passportLocal(function(user, password, next) {
 	global.modules.user.loginViaLocal(user, password, function(login) {
@@ -16,6 +17,17 @@ passport.use(new passportLocal(function(user, password, next) {
 	});
 }));
 
+passport.use(new passportTwitter({
+	consumerKey: config.twitter.key,
+	consumerSecret: config.twitter.secret,
+	callbackURL: config.url + "auth/twitter/callback"
+}, function(token, tokenSecret, profile, done) {
+	global.modules.user.loginViaTwitter(profile.id, profile.username, function(err, user) {
+		if (err) { return done(err); }
+		done(null, user);
+	});
+}));
+
 passport.serializeUser(function(user, done) {
 	done(null, user.uid);
 });
@@ -62,23 +74,6 @@ passport.deserializeUser(function(uid, done) {
 			global.modules.user.session_ping(req.sessionID, req.user.uid);
 		}
 
-		// if (req.session.uid === undefined) {
-		// 	console.log('info: [Auth] First load, retrieving uid...');
-			
-		// 	global.modules.user.get_uid_by_session(req.sessionID, function(uid) {
-		// 		if (uid !== null) {
-		// 			req.session.uid = uid;
-		// 			console.log('info: [Auth] uid ' + req.session.uid + ' found. Welcome back.');
-		// 		} else {
-		// 			req.session.uid = 0;
-		// 			console.log('info: [Auth] No login session found.');
-		// 		}
-		// 	});
-		// } else {
-		// 	// console.log('SESSION: ' + req.sessionID);
-		// 	// console.log('info: [Auth] Ping from uid ' + req.session.uid);
-		// }
-
 		// (Re-)register the session as active
 		global.modules.user.active.register(req.sessionID);
 
@@ -152,6 +147,13 @@ passport.deserializeUser(function(uid, done) {
 		});
 	});
 
+	app.get('/auth/twitter', passport.authenticate('twitter'));
+
+	app.get('/auth/twitter/callback', passport.authenticate('twitter', {
+		successRedirect: '/',
+		failureRedirect: '/login'
+	}));
+
 	app.get('/reset/:code', function(req, res) {
 		res.send(templates['header'] + templates['reset_code'].parse({ reset_code: req.params.code }) + templates['footer']);
 	});