Sample express app which uses Google GData API

examples/express-gdata/server.js

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+
+var express = require('express'),
+	 OAuth = require('oauth').OAuth,
+	 querystring = require('querystring');
+
+// Setup the Express.js server
+var app = express.createServer();
+app.use(express.logger());
+app.use(express.bodyDecoder());
+app.use(express.cookieDecoder());
+app.use(express.session({
+	secret: "skjghskdjfhbqigohqdiouk"
+}));
+
+// Home Page
+app.get('/', function(req, res){
+	if(!req.session.oauth_access_token) {
+		res.redirect("/google_login");
+	}
+	else {
+		res.redirect("/google_contacts");
+	}
+});
+
+// Request an OAuth Request Token, and redirects the user to authorize it
+app.get('/google_login', function(req, res) {
+	
+	var getRequestTokenUrl = "https://www.google.com/accounts/OAuthGetRequestToken";
+	
+	// GData specifid: scopes that wa want access to
+	var gdataScopes = [
+		querystring.escape("https://www.google.com/m8/feeds/"),
+		querystring.escape("https://www.google.com/calendar/feeds/")
+	];
+	
+	var oa = new OAuth(getRequestTokenUrl+"?scope="+gdataScopes.join('+'),
+	                  "https://www.google.com/accounts/OAuthGetAccessToken",
+	                  "anonymous",
+	                  "anonymous",
+	                  "1.0",
+	                  "http://localhost:3000/google_cb"+( req.param('action') && req.param('action') != "" ? "?action="+querystring.escape(req.param('action')) : "" ),
+	                  "HMAC-SHA1");
+
+	oa.getOAuthRequestToken(function(error, oauth_token, oauth_token_secret, results){
+	  if(error) {
+			console.log('error');
+	 		console.log(error);
+		}
+	  else { 
+			// store the tokens in the session
+			req.session.oa = oa;
+			req.session.oauth_token = oauth_token;
+			req.session.oauth_token_secret = oauth_token_secret;
+		
+			// redirect the user to authorize the token
+	   	res.redirect("https://www.google.com/accounts/OAuthAuthorizeToken?oauth_token="+oauth_token);
+	  }
+	})
+
+});
+
+// Callback for the authorization page
+app.get('/google_cb', function(req, res) {
+		
+	// get the OAuth access token with the 'oauth_verifier' that we received
+	req.session.oa.getOAuthAccessToken(
+		req.session.oauth_token, 
+		req.session.oauth_token_secret, 
+		req.param('oauth_verifier'), 
+		function(error, oauth_access_token, oauth_access_token_secret, results2) {
+			
+			if(error) {
+				console.log('error');
+				console.log(error);
+	 		}
+	 		else {
+		
+				// store the access token in the session
+				req.session.oauth_access_token = oauth_access_token;
+				req.session.oauth_access_token_secret = oauth_access_token_secret;
+
+	    		res.redirect((req.param('action') && req.param('action') != "") ? req.param('action') : "/google_contacts");
+	 		}
+
+	});
+	
+});
+
+
+function require_google_login(req, res, next) {
+	if(!req.session.oauth_access_token) {
+		res.redirect("/google_login?action="+querystring.escape(req.originalUrl));
+		return;
+	}
+	next();
+};
+
+app.get('/google_contacts', require_google_login, function(req, res) {
+
+	// Example using GData API v3
+	// GData Specific Header
+	req.session.oa._headers['GData-Version'] = '3.0'; 
+	
+	req.session.oa.getProtectedResource(
+		"https://www.google.com/m8/feeds/contacts/default/full?alt=json", 
+		"GET", 
+		req.session.oauth_access_token, 
+		req.session.oauth_access_token_secret,
+		function (error, data, response) {
+			
+			var feed = JSON.parse(data);
+			
+			res.render('google_contacts.ejs', {
+				locals: { feed: feed }
+			});
+	});
+	
+});
+
+app.get('/google_calendars', require_google_login, function(req, res) {
+	
+	// Example using GData API v2
+	// GData Specific Header
+	req.session.oa._headers['GData-Version'] = '2'; 
+	
+	req.session.oa.getProtectedResource(
+		"https://www.google.com/calendar/feeds/default/allcalendars/full?alt=jsonc", 
+		"GET", 
+		req.session.oauth_access_token, 
+		req.session.oauth_access_token_secret,
+		function (error, data, response) {
+			
+			var feed = JSON.parse(data);
+			
+			res.render('google_calendars.ejs', {
+				locals: { feed: feed }
+			});
+	});
+	
+});
+
+app.listen(3000);
+console.log("listening on http://localhost:3000");

examples/express-gdata/views/google_calendars.ejs

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+
+<p><a href="/google_contacts">Check google_contacts</a></p>
+
+<h1>Google Calendars</h1>
+
+<% for(var i = 0 ; i < feed.data.items.length ; i++ ) { 
+  
+  var calendar = feed.data.items[i]; %>
+<div>
+  
+  <h2 style="color:white;background-color:<%= calendar["color"] %>"><%= calendar["title"] %></h2>
+  
+  <p>canEdit: <%= calendar["canEdit"] %></p>
+  <p>accessLevel: <%= calendar["accessLevel"] %></p>
+  <p>timeZone: <%= calendar["timeZone"] %></p>
+  <p>kind: <%= calendar["kind"] %></p>
+  <p>updated: <%= calendar["updated"] %></p>
+  <p>created: <%= calendar["created"] %></p>
+  
+</div>
+<% } %>

examples/express-gdata/views/google_contacts.ejs

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+
+<p><a href="/google_calendars">Check google_calendars</a></p>
+
+<h1>Google Contacts</h1>
+
+<% for(var i = 0 ; i < feed.feed.entry.length ; i++ ) { 
+  
+  var contact = feed.feed.entry[i]; %>
+
+<div>
+  <!-- you can access much more ! Just a sample: -->
+  <%= contact["title"]["$t"] %>
+  <% emails = contact["gd$email"] %>
+  
+  <ul>
+    <% for(var j = 0 ; j < emails.length ; j++) { %>
+      <li><%= emails[j]["address" ]%></li>
+    <% } %>
+  </ul>
+  
+</div>
+
+
+<% } %>

examples/express-gdata/views/layout.ejs

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+<html>
+<head>
+</head>
+<body>
+  
+<%- body %>  
+  
+</body>
+</html>