Add authentication via GitHub

.gitignore

@@ -19,3 +19,6 @@
 /coverage
 # Ignore encrypted secrets key file.
 config/secrets.yml.key
+
+# Ignore master key for decrypting credentials and more.
+/config/master.key

app/controllers/users/omniauth_callbacks_controller.rb

@@ -11,4 +11,8 @@ class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController
   def developer
     sign_in_with "Developer"
   end
+
+  def github
+    sign_in_with "GitHub"
+  end
 end

app/views/layouts/_header.html.erb

@@ -21,7 +21,11 @@
               </b></span>
               <%= link_to(t('application.sign_out'), destroy_user_session_path, method: :delete) %>
             <% else %>
+              <% if Rails.env.development? %>
                 <%= link_to(t('application.sign_in'), user_developer_omniauth_authorize_path) %>
+              <% else %>
+                <%= link_to(t('application.sign_in'), user_github_omniauth_authorize_path) %>
+              <% end %>
             <% end %>
         <% end %>
     <% end %>

config/credentials.yml.enc

@@ -0,0 +1 @@
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--zgHjFhqIX9PMSptP--a4kSt219OHlMrnkVTQFQVA==

config/initializers/devise.rb

@@ -233,8 +233,15 @@ Devise.setup do |config|
   # Add a new OmniAuth provider. Check the wiki for more information on setting
   # up on your models and hooks.
   # config.omniauth :github, 'APP_ID', 'APP_SECRET', scope: 'user,public_repo'
-  config.omniauth :developer, fields: [:name], uid_field: :name
-
+  if Rails.env.development?
+    config.omniauth :developer, fields: [:name], uid_field: :name
+  end
+  if Rails.env.production?
+    config.omniauth :github, Rails.application.credentials.github[:client_id], Rails.application.credentials.github[:client_secret], scope: ''
+  end
+  if Rails.env.test?
+    config.omniauth :github, '', '', scope: ''
+  end
   # ==> Warden configuration
   # If you want to use other strategies, that are not supported by Devise, or
   # change the failure app, you can configure them inside the config.warden block.

config/secrets.yml.enc

@@ -1 +0,0 @@
-aXUUhT76Uhw5fnfkwOwNP1EWppHhl8QB/N0VNzb0BNcZ+S2xsq9biPVY9OakzXj24If4KV9hYw5LJkN1xmQcwxQMJ2lqdow6fkdwFuHnjPMNZyzr7G3aaLylpamkBUaY7paUfRVjJAWJge0l2cv/fZcKuRS2B2CmjqjdTfcvxHb9R/UXM1Vv10Cp88dPKlQ11SYd3g0m6W87TZL+Hut6hweKuvA6DJlnGpNH/B+yaVYPzVfkpCN7mtNv7HEtkfATMzeoPmeW10EgwfljntfPZ33l5+eOJvOidrme1vDzVKO7Ag==--7sKcvkcMXbiQWQdA--aIz51lRbRz/t/xnkvY8WTQ==

test/integration/translator_flow_test.rb

@@ -0,0 +1,19 @@
+require 'test_helper'
+
+class TranslatorFlowTest < ActionDispatch::IntegrationTest
+  test "can view a problem" do
+    get '/problems/1'
+    assert_response :success
+    assert_select "h1", "First title Problem 1"
+  end
+
+  test "can login via github" do
+    get '/users/auth/github'
+    assert_response :redirect
+    follow_redirect!
+    follow_redirect!
+    assert_response :success
+    assert controller.user_signed_in?
+    assert_equal "translator", controller.current_user.name
+  end
+end

test/test_helper.rb

@@ -20,3 +20,13 @@ class ActiveSupport::TestCase
     sign_in translator
   end
 end
+
+
+class ActionDispatch::IntegrationTest
+  OmniAuth.config.test_mode = true
+  OmniAuth.config.mock_auth[:github] = OmniAuth::AuthHash.new({
+      provider: :github,
+      uid: 'translator',
+      name: 'translator'
+  })
+end