# frozen_string_literal: true

require "spec_helper"

RSpec.describe RedisTracking do
  let(:user) { create(:user) }

  controller(ApplicationController) do
    include RedisTracking

    skip_before_action :authenticate_user!, only: :show
    track_redis_hll_event :index, :show, name: 'g_compliance_approval_rules',
      if: [:custom_condition_one?, :custom_condition_two?]

    def index
      render html: 'index'
    end

    def new
      render html: 'new'
    end

    def show
      render html: 'show'
    end

    private

    def custom_condition_one?
      true
    end

    def custom_condition_two?
      true
    end
  end

  def expect_tracking
    expect(Gitlab::UsageDataCounters::HLLRedisCounter).to receive(:track_event)
      .with('g_compliance_approval_rules', values: instance_of(String))
  end

  def expect_no_tracking
    expect(Gitlab::UsageDataCounters::HLLRedisCounter).not_to receive(:track_event)
  end

  context 'when user is logged in' do
    before do
      sign_in(user)
    end

    it 'tracks the event' do
      expect_tracking

      get :index
    end

    it 'tracks the event if DNT is not enabled' do
      request.headers['DNT'] = '0'

      expect_tracking

      get :index
    end

    it 'does not track the event if DNT is enabled' do
      request.headers['DNT'] = '1'

      expect_no_tracking

      get :index
    end

    it 'does not track the event if the format is not HTML' do
      expect_no_tracking

      get :index, format: :json
    end

    it 'does not track the event if a custom condition returns false' do
      expect(controller).to receive(:custom_condition_two?).and_return(false)

      expect_no_tracking

      get :index
    end

    it 'does not track the event for untracked actions' do
      expect_no_tracking

      get :new
    end
  end

  context 'when user is not logged in and there is a visitor_id' do
    let(:visitor_id) { SecureRandom.uuid }

    before do
      routes.draw { get 'show' => 'anonymous#show' }
    end

    it 'tracks the event' do
      cookies[:visitor_id] = { value: visitor_id, expires: 24.months }

      expect_tracking

      get :show
    end
  end

  context 'when user is not logged in and there is no visitor_id' do
    it 'does not track the event' do
      expect_no_tracking

      get :index
    end
  end
end