Application prefs section (#2758)

* Add code for creating/managing apps to settings section

* Add specs for app changes

* Fix controller spec

* Fix view file I pasted over by mistake

* Add locale strings. Add 'my apps' to nav

* Add Client ID/Secret to App page. Add some visual separation

* Fix rubocop warnings

* Fix embarrassing typo

I lost an `end` statement while fixing a merge conflict.

* Add code for creating/managing apps to settings section

- Add specs for app changes
- Add locale strings. Add 'my apps' to nav
- Add Client ID/Secret to App page. Add some visual separation
- Fix some bugs/warnings

* Update to match code standards

* Trigger notification

* Add warning about not sharing API secrets

* Tweak spec a bit

* Cleanup fixture creation by using let!

* Remove unused key

* Add foreign key for application<->user

spec/controllers/settings/applications_controller_spec.rb

@@ -0,0 +1,166 @@
+require 'rails_helper'
+
+describe Settings::ApplicationsController do
+  render_views
+  
+  let!(:user) { Fabricate(:user) }
+  let!(:app) { Fabricate(:application, owner: user) }
+  
+  before do
+    sign_in user, scope: :user
+  end
+
+  describe 'GET #index' do
+    let!(:other_app) { Fabricate(:application) }
+
+    it 'shows apps' do
+      get :index
+      expect(response).to have_http_status(:success)
+      expect(assigns(:applications)).to include(app)
+      expect(assigns(:applications)).to_not include(other_app)
+    end
+  end
+
+  
+  describe 'GET #show' do
+    it 'returns http success' do
+      get :show, params: { id: app.id }
+      expect(response).to have_http_status(:success)
+      expect(assigns[:application]).to eql(app)
+    end
+
+    it 'returns 404 if you dont own app' do
+      app.update!(owner: nil)
+
+      get :show, params: { id: app.id }
+      expect(response.status).to eq 404
+    end
+  end
+
+  describe 'GET #new' do
+    it 'works' do
+      get :new
+      expect(response).to have_http_status(:success)
+    end
+  end
+
+  describe 'POST #create' do
+    context 'success' do
+      def call_create
+        post :create, params: {
+               doorkeeper_application: {
+                 name: 'My New App',
+                 redirect_uri: 'urn:ietf:wg:oauth:2.0:oob',
+                 website: 'http://google.com',
+                 scopes: 'read write follow'
+               }
+             }
+        response
+      end
+
+      it 'creates an entry in the database' do
+        expect { call_create }.to change(Doorkeeper::Application, :count)
+      end
+      
+      it 'redirects back to applications page' do
+        expect(call_create).to redirect_to(settings_applications_path)
+      end
+    end
+
+    context 'failure' do
+      before do
+        post :create, params: {
+               doorkeeper_application: {
+                 name: '',
+                 redirect_uri: '',
+                 website: '',
+                 scopes: ''
+               }
+             }
+      end
+
+      it 'returns http success' do
+        expect(response).to have_http_status(:success)
+      end
+
+      it 'renders form again' do
+        expect(response).to render_template(:new)
+      end
+    end
+  end
+  
+  describe 'PATCH #update' do
+    context 'success' do
+      let(:opts) {
+        {
+          website: 'https://foo.bar/'
+        }
+      }
+
+      def call_update
+        patch :update, params: {
+                id: app.id,
+                doorkeeper_application: opts
+              }
+        response
+      end
+
+      it 'updates existing application' do
+        call_update
+        expect(app.reload.website).to eql(opts[:website])
+      end
+      
+      it 'redirects back to applications page' do
+        expect(call_update).to redirect_to(settings_applications_path)
+      end
+    end
+
+    context 'failure' do
+      before do
+        patch :update, params: {
+                id: app.id,
+                doorkeeper_application: {
+                  name: '',
+                  redirect_uri: '',
+                  website: '',
+                  scopes: ''
+                }
+              }
+      end
+
+      it 'returns http success' do
+        expect(response).to have_http_status(:success)
+      end
+
+      it 'renders form again' do
+        expect(response).to render_template(:show)
+      end
+    end
+  end
+
+  describe 'destroy' do
+    before do
+      post :destroy, params: { id: app.id }
+    end
+
+    it 'redirects back to applications page' do
+      expect(response).to redirect_to(settings_applications_path)
+    end
+
+    it 'removes the app' do
+      expect(Doorkeeper::Application.find_by(id: app.id)).to be_nil
+    end
+  end
+
+  describe 'regenerate' do
+    let(:token) { user.token_for_app(app) }
+    before do
+      expect(token).to_not be_nil
+      put :regenerate, params: { application_id: app.id }
+    end
+
+    it 'should create new token' do
+      expect(user.token_for_app(app)).to_not eql(token)
+    end
+  end
+end