Disable the "Report abuse" button if a user has already been reported

app/helpers/user_helper.rb

+module UserHelper
+
+  def abuse_report_button_title(user)
+    if user.abuse_report
+      "#{user.username} has already been reported for abuse."
+    else
+      "Report #{user.username} for abuse."
+    end
+  end
+
+end

app/models/user.rb

@@ -97,7 +97,9 @@ class User < ActiveRecord::Base
   # Namespace for personal projects
   has_one :namespace, -> { where type: nil }, dependent: :destroy, foreign_key: :owner_id, class_name: "Namespace"
 
+
   # Profile
+  has_one  :abuse_report, dependent: :destroy
   has_many :keys, dependent: :destroy
   has_many :emails, dependent: :destroy
   has_many :identities, dependent: :destroy, autosave: true

app/views/users/show.html.haml

@@ -19,14 +19,18 @@
               = icon('user')
               Profile settings
         - elsif current_user
-          .pull-right
+          #report_abuse.pull-right
             %span.dropdown
-              %a.light.dropdown-toggle.btn.btn-sm{href: '#', "data-toggle" => "dropdown"}
-                = icon('exclamation-circle')
-              %ul.dropdown-menu.dropdown-menu-right
-                %li
-                  = link_to new_abuse_report_path(user_id: @user.id) do
-                    Report abuse
+              - if @user.abuse_report
+                %span.light.dropdown-toggle.btn.btn-sm.btn-close{title: abuse_report_button_title(@user)}
+                  = icon('exclamation-circle')
+              - else
+                %a.light.dropdown-toggle.btn.btn-sm{href: '#', "data-toggle" => "dropdown"}
+                  = icon('exclamation-circle')
+                %ul.dropdown-menu.dropdown-menu-right
+                  %li
+                    = link_to new_abuse_report_path(user_id: @user.id), title: abuse_report_button_title(@user) do
+                      Report abuse
 
       .username
         @#{@user.username}

features/abuse_report.feature

@@ -8,3 +8,10 @@ Feature: Abuse reports
     And I click "Report abuse" button
     When I fill and submit abuse form
     Then I should see success message
+
+  Scenario: Report abuse available only once
+    Given I visit "Mike" user page
+    And I click "Report abuse" button
+    When I fill and submit abuse form
+    And I visit "Mike" user page
+    Then I should not see the "Remove abuse" dropdown / button

features/steps/abuse_reports.rb

@@ -22,6 +22,11 @@ class Spinach::Features::AbuseReports < Spinach::FeatureSteps
     user_mike
   end
 
+  step 'I should not see the "Remove abuse" dropdown / button' do
+    expect(find(:css, '#report_abuse')).not_to have_selector(:css, 'ul.dropdown-menu')
+    expect(find(:css, '#report_abuse')).to have_selector(:css, '.btn-close')
+  end
+
   def user_mike
     @user_mike ||= create(:user, name: 'Mike')
   end

spec/features/users_spec.rb

 require 'spec_helper'
 
 feature 'Users', feature: true do
+  let(:user)  { create(:user, username: 'user1', name: 'User 1', email: 'user1@gitlab.com') }
+  let(:user2) { create(:user, username: 'user2', name: 'User 2', email: 'user2@gitlab.com') }
+
   scenario 'GET /users/sign_in creates a new user account' do
     visit new_user_session_path
     fill_in 'user_name', with: 'Name Surname'
@@ -11,7 +14,6 @@ feature 'Users', feature: true do
   end
 
   scenario 'Successful user signin invalidates password reset token' do
-    user = create(:user)
     expect(user.reset_password_token).to be_nil
 
     visit new_user_password_path
@@ -28,7 +30,6 @@ feature 'Users', feature: true do
     expect(user.reset_password_token).to be_nil
   end
 
-  let!(:user) { create(:user, username: 'user1', name: 'User 1', email: 'user1@gitlab.com') }
   scenario 'Should show one error if email is already taken' do
     visit new_user_session_path
     fill_in 'user_name', with: 'Another user name'
@@ -48,4 +49,37 @@ feature 'Users', feature: true do
     page.find('#error_explanation').find('ul').all('li').count
   end
 
+  context 'With a logged-in user' do
+    before do
+      login_as(user)
+    end
+
+    describe 'Abuse report button' do
+      context 'User has never been reported for abuse' do
+        it 'enables the "Report abuse" button / dropdown' do
+          visit user_path(user2)
+
+          expect(page.find('#report_abuse').find('ul.dropdown-menu').all('li').count).to be(1)
+          expect(page.find('#report_abuse').all('.btn-close').count).to be(0)
+        end
+      end
+
+      context 'User has already been reported for abuse' do
+        before do
+          @abuse_report = AbuseReport.new(user: user2, message: 'Foo bar')
+          @abuse_report.reporter = user
+          @abuse_report.save!
+        end
+
+        it 'disables the "Report abuse" button' do
+          visit user_path(user2)
+
+          expect(page.find('#report_abuse').all('ul.dropdown-menu').count).to be(0)
+          expect(page.find('#report_abuse').all('.btn-close').count).to be(1)
+        end
+      end
+    end
+
+  end
+
 end

spec/models/user_spec.rb

@@ -73,6 +73,7 @@ describe User do
 
   describe 'associations' do
     it { is_expected.to have_one(:namespace) }
+    it { is_expected.to have_one(:abuse_report) }
     it { is_expected.to have_many(:snippets).class_name('Snippet').dependent(:destroy) }
     it { is_expected.to have_many(:project_members).dependent(:destroy) }
     it { is_expected.to have_many(:groups) }