Sinatra starter kit

app.rb

require 'bundler'
Bundler.require

### Settings

enable :logging
enable :sessions

use OmniAuth::Builder do
  provider :twitter, ENV['TWITTER_CONSUMER_KEY'],
                     ENV['TWITTER_CONSUMER_SECRET']
end

### Helpers and utils

helpers do
  def logged_in?
    !!session[:uid]
  end
end

def auth
  request.env['omniauth.auth']
end

def twitter
  Twitter::Client.new(
    consumer_key: ENV['TWITTER_CONSUMER_KEY'],
    consumer_secret: ENV['TWITTER_CONSUMER_SECRET'],
    oauth_token: session[:oauth_token],
    oauth_token_secret: session[:oauth_secret],
  )
end

### Actions

get '/' do
  slim :index
end

get '/auth/twitter/callback' do
  session[:uid] = auth.uid
  session[:nickname] = auth.info.nickname
  session[:oauth_token] = auth.credentials.token
  session[:oauth_secret] = auth.credentials.secret
  redirect '/'
end

get '/logout' do
  session[:uid] = nil
  session[:nickname] = nil
  session[:oauth_token] = nil
  session[:oauth_secret] = nil
  redirect '/'
end

config.ru

require './app.rb'
run Sinatra::Application

Gemfile

source :rubygems

gem 'thin'
gem 'sinatra'
gem 'sinatra-flash', require: 'sinatra/flash'
gem 'slim'
gem 'twitter'
gem 'omniauth'
gem 'omniauth-twitter'

group :development do
  gem 'watchr'
end

watchr.rb

def files
  Regexp.union(
    %r{app\.rb},
    %r{config\.ru},
    %r{views/.*\.slim},
  )
end

watch(files) { system('touch tmp/restart.txt') }