Filter abuse reports by user

In admin area, add a user filter to abuse reports page.
It will allow admin to find a report for specific user.
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/assets/javascripts/pages/admin/abuse_reports/index.js

+/* eslint-disable no-new */
 import AbuseReports from './abuse_reports';
+import UsersSelect from '~/users_select';
 
-document.addEventListener('DOMContentLoaded', () => new AbuseReports());
+document.addEventListener('DOMContentLoaded', () => {
+  new AbuseReports();
+  new UsersSelect();
+});

app/controllers/admin/abuse_reports_controller.rb

 # frozen_string_literal: true
 
 class Admin::AbuseReportsController < Admin::ApplicationController
-  # rubocop: disable CodeReuse/ActiveRecord
   def index
-    @abuse_reports = AbuseReport.order(id: :desc).page(params[:page])
-    @abuse_reports = @abuse_reports.includes(:user, :reporter)
+    @abuse_reports = AbuseReportsFinder.new(params).execute
   end
-  # rubocop: enable CodeReuse/ActiveRecord
 
   def destroy
     abuse_report = AbuseReport.find(params[:id])

app/finders/abuse_reports_finder.rb

+# frozen_string_literal: true
+
+class AbuseReportsFinder
+  attr_reader :params
+
+  def initialize(params = {})
+    @params = params
+  end
+
+  def execute
+    reports = AbuseReport.all
+    reports = reports.by_user(params[:user_id]) if params[:user_id].present?
+
+    reports.with_order_id_desc
+      .with_users
+      .page(params[:page])
+  end
+end

app/models/abuse_report.rb

@@ -2,6 +2,7 @@
 
 class AbuseReport < ApplicationRecord
   include CacheMarkdownField
+  include Sortable
 
   cache_markdown_field :message, pipeline: :single_line
 
@@ -13,6 +14,9 @@ class AbuseReport < ApplicationRecord
   validates :message, presence: true
   validates :user_id, uniqueness: { message: 'has already been reported' }
 
+  scope :by_user, -> (user) { where(user_id: user) }
+  scope :with_users, -> { includes(:reporter, :user) }
+
   # For CacheMarkdownField
   alias_method :author, :reporter
 

app/views/admin/abuse_reports/index.html.haml

-- page_title 'Abuse Reports'
-%h3.page-title Abuse Reports
-%hr
+- page_title _('Abuse Reports')
+
+%h3.page-title= _('Abuse Reports')
+
+.row-content-block.second-block
+  = form_tag admin_abuse_reports_path, method: :get, class: 'filter-form' do
+    .filter-categories.flex-fill
+      .filter-item.inline
+        = dropdown_tag(user_dropdown_label(params[:user_id], 'User'),
+          options: { toggle_class: 'js-filter-submit js-user-search',
+          title: _('Filter by user'), filter: true, filterInput: 'input#user-search',
+          dropdown_class: 'dropdown-menu-selectable dropdown-menu-user js-filter-submit',
+          placeholder: _('Search users'),
+          data: { current_user: true, field_name: 'user_id' }})
+
 .abuse-reports
   - if @abuse_reports.present?
     .table-holder

changelogs/unreleased/dz-abuse-reports-filter.yml

+---
+title: Add user filtering to abuse reports page
+merge_request: 19365
+author:
+type: changed

locale/gitlab.pot

@@ -7407,6 +7407,9 @@ msgstr ""
 msgid "Filter by two-factor authentication"
 msgstr ""
 
+msgid "Filter by user"
+msgstr ""
+
 msgid "Filter projects"
 msgstr ""
 

spec/features/admin/admin_abuse_reports_spec.rb

@@ -51,5 +51,29 @@ describe "Admin::AbuseReports", :js do
         end
       end
     end
+
+    describe 'filtering by user' do
+      let!(:user2) { create(:user) }
+      let!(:abuse_report)   { create(:abuse_report, user: user) }
+      let!(:abuse_report_2) { create(:abuse_report, user: user2) }
+
+      it 'shows only single user report' do
+        visit admin_abuse_reports_path
+
+        page.within '.filter-form' do
+          click_button 'User'
+          wait_for_requests
+
+          page.within '.dropdown-menu-user' do
+            click_link user2.name
+          end
+
+          wait_for_requests
+        end
+
+        expect(page).to have_content(user2.name)
+        expect(page).not_to have_content(user.name)
+      end
+    end
   end
 end

spec/finders/abuse_reports_finder_spec.rb

+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe AbuseReportsFinder, '#execute' do
+  let(:params) { {} }
+  let!(:user1) { create(:user) }
+  let!(:user2) { create(:user) }
+  let!(:abuse_report_1) { create(:abuse_report, user: user1) }
+  let!(:abuse_report_2) { create(:abuse_report, user: user2) }
+
+  subject { described_class.new(params).execute }
+
+  context 'empty params' do
+    it 'returns all abuse reports' do
+      expect(subject).to match_array([abuse_report_1, abuse_report_2])
+    end
+  end
+
+  context 'params[:user_id] is present' do
+    let(:params) { { user_id: user2 } }
+
+    it 'returns abuse reports for the specified user' do
+      expect(subject).to match_array([abuse_report_2])
+    end
+  end
+end