# frozen_string_literal: true

require 'spec_helper'

RSpec.describe Projects::OpenIssuesCountService, :use_clean_rails_memory_store_caching, feature_category: :team_planning do
  let(:project) { create(:project) }

  subject { described_class.new(project) }

  it_behaves_like 'a counter caching service'

  describe '#count' do
    context 'when user is nil' do
      it 'does not include confidential issues in the issue count' do
        create(:issue, :opened, project: project)
        create(:issue, :opened, confidential: true, project: project)

        expect(described_class.new(project).count).to eq(1)
      end
    end

    context 'when user is provided' do
      let(:user) { create(:user) }

      context 'when user can read confidential issues' do
        before do
          project.add_planner(user)
        end

        it 'returns the right count with confidential issues' do
          create(:issue, :opened, project: project)
          create(:issue, :opened, confidential: true, project: project)

          expect(described_class.new(project, user).count).to eq(2)
        end

        it 'uses total_open_issues_count cache key' do
          expect(described_class.new(project, user).cache_key_name).to eq('total_open_issues_count')
        end
      end

      context 'when user cannot read confidential issues' do
        before do
          project.add_guest(user)
        end

        it 'does not include confidential issues' do
          create(:issue, :opened, project: project)
          create(:issue, :opened, confidential: true, project: project)

          expect(described_class.new(project, user).count).to eq(1)
        end

        it 'uses public_open_issues_count cache key' do
          expect(described_class.new(project, user).cache_key_name).to eq('public_open_issues_count')
        end
      end

      context 'when there are hidden issues' do
        let(:banned_user) { create(:user, :banned) }

        it 'does not include hidden issues in the count' do
          create(:issue, :opened, project: project)
          create(:issue, :opened, project: project, author: banned_user)

          expect(described_class.new(project, user).count).to eq(1)
        end
      end
    end

    describe '#refresh_cache' do
      before do
        create(:issue, :opened, project: project)
        create(:issue, :opened, project: project)
        create(:issue, :opened, confidential: true, project: project)
      end

      context 'when cache is empty' do
        it 'refreshes cache keys correctly' do
          subject.refresh_cache

          expect(Rails.cache.read(subject.cache_key(described_class::PUBLIC_COUNT_KEY))).to eq(2)
          expect(Rails.cache.read(subject.cache_key(described_class::TOTAL_COUNT_KEY))).to eq(3)
        end
      end

      context 'when cache is outdated' do
        before do
          subject.refresh_cache
        end

        it 'refreshes cache keys correctly' do
          create(:issue, :opened, project: project)
          create(:issue, :opened, confidential: true, project: project)

          subject.refresh_cache

          expect(Rails.cache.read(subject.cache_key(described_class::PUBLIC_COUNT_KEY))).to eq(3)
          expect(Rails.cache.read(subject.cache_key(described_class::TOTAL_COUNT_KEY))).to eq(5)
        end
      end
    end

    describe "#delete_cache" do
      before do
        create(:issue, :opened, project: project)
        create(:issue, :opened, project: project)
        create(:issue, :opened, confidential: true, project: project)
        subject.refresh_cache # we use this method to add the counts in the cache
      end

      it "clears the cache" do
        expect { subject.delete_cache }
        .to change { Rails.cache.read(subject.public_count_cache_key) }.from(2).to(nil)
        .and change { Rails.cache.read(subject.total_count_cache_key) }.from(3).to(nil)
      end
    end
  end
end
