express/coffeescript

app.coffee

# load libraries
require 'coffee-script'
mongoose = require 'mongoose'
express = require 'express'
step = require "step"

# about oauth
OAuth = require('oauth').OAuth
oauth = new OAuth(
  'https://api.twitter.com/oauth/request_token',
  'https://api.twitter.com/oauth/access_token',
  '<consumer key>',
  '<consumer key secret>',
  '1.0',
  'http://localhost/oauth_verify',
  'HMAC-SHA1')

# about mongoose
mongoose.connect 'mongodb://localhost/test'

User = mongoose.model 'o-users', new mongoose.Schema
  id : Number
  name : String
  twitter:
    token: String
    token_secret: String

Post = mongoose.model 'post', new mongoose.Schema
  id : Number
  name : String
  content : String
  created_at : Date

# about express
app = express.createServer()
app.configure ()->
  # for session ! write before app.router
  app.use express.cookieParser()
  app.use express.session { secret: 'mytestsessionkey' }

  app.set 'views', __dirname + '/templates'
  app.use express.methodOverride()
  app.use express.bodyParser()
  app.use app.router
  app.use express.static(__dirname + '/static')
  app.set 'view options', { layout: true }
  app.set 'view engine', 'ejs'

app.configure 'development', ()->
  app.use express.errorHandler({ dumpExceptions: true, showStack: true })

# ====== API ========

app.get '/oauth_verify',(req, res)->
  oauth_token = req.query.oauth_token
  oauth_verifier = req.query.oauth_verifier

  if oauth_token and oauth_verifier and req.session.oauth
    step ()->
      oauth.getOAuthAccessToken oauth_token, null, oauth_verifier,@
      return
    , (e, @access_token, @access_token_secret, @results) ->
      req.session.regenerate @
      return
    , ()->
      req.session.name = @results.screen_name
      req.session.twitter_id = @results.user_id
      User.findOne { id:@results.user_id } ,@
      return
    , (e,user)->
      console.log user
      if not user
        item = new User()
        item.name = @results.screen_name
        item.id = @results.user_id
        item.twitter =
          token: @access_token
          token_secret: @access_token_secret
        item.save (e)-> console.log 'add new user:'+JSON.stringify(item)
        console.log "[login] #{@results.screen_name}" if user
        res.redirect '/'
        return
      else
        console.log "[login] #{@results.screen_name}" if user
        res.redirect '/'
        return
  else
    oauth.getOAuthRequestToken (error, oauth_token, oauth_token_secret, results)->
      req.session.oauth =
        oauth_token: oauth_token
        oauth_token_secret: oauth_token_secret
        request_token_results: results
      res.redirect 'https://api.twitter.com/oauth/authorize?oauth_token=' + oauth_token
# logout
app.get '/logout', (req, res)->
  req.session.destroy ()->
    res.redirect '/'

"""
 add post
 needed : login
 param : content
"""
app.get '/add_post', (req, res)->
  if not req.session.twitter_id or not req.query.content
    res.send "not enough post data"
    return
  item = new Post()
  item.name = req.session.name
  item.id = parseInt(req.session.twitter_id)
  item.content = req.query.content
  item.created_at = new Date

  item.save (err) ->
    console.log 'add new post:'+JSON.stringify(item) unless err
  res.redirect("/");

# ====== URL Map ========

# index
app.get '/', (req, res)->
  login_name = ""
  items = []
  login_name = req.session.name if req.session.name
  if login_name
    Post.find { id:req.session.twitter_id }, (err,posts)->
      res.render "index.ejs"
        items: posts.reverse()
        login_name: login_name
        layout: true
  else
    User.find {},(err,users) ->
      res.render "index.ejs"
        items: []
        login_name: login_name
        layout: true

# Bind Application
port = 3000
app.listen port
console.log "run server. port #{port}."

index.ejs

<h1>Object List</h1>


<% if(login_name) { %>
<p> you logged in as <%= login_name %> : <a href="/logout"> logout </a></p>


<form method="GET" action="/add_post">
  update:<input type="text" name="content" id="content" />
  <input type="submit" />
</form>
<% } else {%>
<a href="/oauth_verify"> oauth </a>
<% }  %>


<% if (items.length) { %>
<ul>
  <% items.forEach(function(i){ %>
  <li><%= i.name %>:<%= i.content %> </li>
  <% }) %>
</ul>

<% } %>

layout.ejs

<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <title>TEST</title>
</head>
<body>
  <%- body %>
</body>
</html>`