Create and integrate omniauth 🆒

Gemfile

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+source 'https://rubygems.org'
+gem 'thin'
+gem 'sinatra', :require => 'sinatra/base'
+gem 'omniauth'
+gem 'omniauth-github'
+gem 'slim'
+gem 'mongoid'

Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    activemodel (3.2.2)
+      activesupport (= 3.2.2)
+      builder (~> 3.0.0)
+    activesupport (3.2.2)
+      i18n (~> 0.6)
+      multi_json (~> 1.0)
+    addressable (2.2.7)
+    bson (1.6.1)
+    builder (3.0.0)
+    daemons (1.1.8)
+    eventmachine (0.12.10)
+    faraday (0.7.6)
+      addressable (~> 2.2)
+      multipart-post (~> 1.1)
+      rack (~> 1.1)
+    hashie (1.2.0)
+    i18n (0.6.0)
+    mongo (1.6.1)
+      bson (~> 1.6.1)
+    mongoid (2.4.7)
+      activemodel (~> 3.1)
+      mongo (~> 1.3)
+      tzinfo (~> 0.3.22)
+    multi_json (1.1.0)
+    multipart-post (1.1.5)
+    oauth2 (0.5.2)
+      faraday (~> 0.7)
+      multi_json (~> 1.0)
+    omniauth (1.0.3)
+      hashie (~> 1.2)
+      rack
+    omniauth-github (1.0.1)
+      omniauth (~> 1.0)
+      omniauth-oauth2 (~> 1.0)
+    omniauth-oauth2 (1.0.0)
+      oauth2 (~> 0.5.0)
+      omniauth (~> 1.0)
+    rack (1.4.1)
+    rack-protection (1.1.4)
+      rack
+    sinatra (1.3.1)
+      rack (~> 1.3, >= 1.3.4)
+      rack-protection (~> 1.1, >= 1.1.2)
+      tilt (~> 1.3, >= 1.3.3)
+    slim (1.1.1)
+      temple (~> 0.4.0)
+      tilt (~> 1.3.2)
+    temple (0.4.0)
+    thin (1.3.1)
+      daemons (>= 1.0.9)
+      eventmachine (>= 0.12.6)
+      rack (>= 1.0.0)
+    tilt (1.3.3)
+    tzinfo (0.3.32)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  mongoid
+  omniauth
+  omniauth-github
+  sinatra
+  slim
+  thin

app/models/hacker.rb

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+class Hacker
+  include Mongoid::Document
+
+  field :uid, type: String
+  field :name, type: String  
+  field :email, type: String
+
+end

app/views/home.slim

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+h1 "You bro, #{Hacker.last.try(:name)}"
+a href='/auth/github'
+  | Sign in with github
+
+h2 Bros => 
+- Hacker.all.each do |hack|
+  img src="#{gravatar(hack.try(:email))}"

config.ru

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+require 'rubygems'
+require 'bundler'
+require 'yaml'
+require 'digest'
+
+Bundler.require
+
+require './core'
+require './app/models/hacker'
+require './app/models/target'
+run Core

config/mongoid.yml

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+development:
+  host: localhost
+  database: bro_development
+

core.rb

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+class Core < Sinatra::Base
+  GITHUB = YAML.load_file(File.join(settings.root, 'config/github_key.yml'))
+  Mongoid.load!(File.join(settings.root, 'config/mongoid.yml'))
+
+  set :views, settings.root + '/app/views'
+  set :slim, :pretty => true
+
+  use Rack::Session::Cookie
+  use OmniAuth::Builder do
+    provider :github, GITHUB['id'], GITHUB['secret'] 
+  end
+
+  helpers do
+    def gravatar email
+      "http://www.gravatar.com/avatar/#{Digest::MD5.hexdigest(email)}" if email
+    end
+  end
+
+  get '/' do
+    slim :home
+  end
+
+  get '/auth/failure' do
+    "Not cool, bro"
+  end
+
+  get '/auth/github/callback' do
+    Hacker.find_or_create_by(uid: request.env['omniauth.auth']['uid'],
+                             name: request.env['omniauth.auth']['info']['nickname'],
+                             email: request.env['omniauth.auth']['info']['email'])
+    redirect '/'
+  end
+
+end