# frozen_string_literal: true

require 'spec_helper'

RSpec.describe Ci::JobArtifacts::DestroyBatchService do
  let(:artifacts) { Ci::JobArtifact.where(id: [artifact_with_file.id, artifact_without_file.id, trace_artifact.id]) }
  let(:skip_projects_on_refresh) { false }
  let(:service) do
    described_class.new(
      artifacts,
      pick_up_at: Time.current,
      skip_projects_on_refresh: skip_projects_on_refresh
    )
  end

  let_it_be(:artifact_with_file, refind: true) do
    create(:ci_job_artifact, :zip)
  end

  let_it_be(:artifact_without_file, refind: true) do
    create(:ci_job_artifact)
  end

  let_it_be(:undeleted_artifact, refind: true) do
    create(:ci_job_artifact)
  end

  let_it_be(:trace_artifact, refind: true) do
    create(:ci_job_artifact, :trace, :expired)
  end

  describe '.execute' do
    subject(:execute) { service.execute }

    it 'creates a deleted object for artifact with attached file' do
      expect { subject }.to change { Ci::DeletedObject.count }.by(1)
    end

    it 'does not remove the attached file' do
      expect { execute }.not_to change { artifact_with_file.file.exists? }
    end

    it 'deletes the artifact records' do
      expect { subject }.to change { Ci::JobArtifact.count }.by(-2)
    end

    it 'reports metrics for destroyed artifacts' do
      expect_next_instance_of(Gitlab::Ci::Artifacts::Metrics) do |metrics|
        expect(metrics).to receive(:increment_destroyed_artifacts_count).with(2).and_call_original
        expect(metrics).to receive(:increment_destroyed_artifacts_bytes).with(107464).and_call_original
      end

      execute
    end

    it 'preserves trace artifacts and removes any timestamp' do
      expect { subject }
        .to change { trace_artifact.reload.expire_at }.from(trace_artifact.expire_at).to(nil)
        .and not_change { Ci::JobArtifact.exists?(trace_artifact.id) }
    end

    context 'when artifact belongs to a project that is undergoing stats refresh' do
      let!(:artifact_under_refresh_1) do
        create(:ci_job_artifact, :zip)
      end

      let!(:artifact_under_refresh_2) do
        create(:ci_job_artifact, :zip)
      end

      let!(:artifact_under_refresh_3) do
        create(:ci_job_artifact, :zip, project: artifact_under_refresh_2.project)
      end

      let(:artifacts) do
        Ci::JobArtifact.where(id: [artifact_with_file.id, artifact_under_refresh_1.id, artifact_under_refresh_2.id,
                                   artifact_under_refresh_3.id])
      end

      before do
        create(:project_build_artifacts_size_refresh, :created, project: artifact_with_file.project)
        create(:project_build_artifacts_size_refresh, :pending, project: artifact_under_refresh_1.project)
        create(:project_build_artifacts_size_refresh, :running, project: artifact_under_refresh_2.project)
      end

      shared_examples 'avoiding N+1 queries' do
        let!(:control_artifact_on_refresh) do
          create(:ci_job_artifact, :zip)
        end

        let!(:control_artifact_non_refresh) do
          create(:ci_job_artifact, :zip)
        end

        let!(:other_artifact_on_refresh) do
          create(:ci_job_artifact, :zip)
        end

        let!(:other_artifact_on_refresh_2) do
          create(:ci_job_artifact, :zip)
        end

        let!(:other_artifact_non_refresh) do
          create(:ci_job_artifact, :zip)
        end

        let!(:control_artifacts) do
          Ci::JobArtifact.where(
            id: [
              control_artifact_on_refresh.id,
              control_artifact_non_refresh.id
            ]
          )
        end

        let!(:artifacts) do
          Ci::JobArtifact.where(
            id: [
              other_artifact_on_refresh.id,
              other_artifact_on_refresh_2.id,
              other_artifact_non_refresh.id
            ]
          )
        end

        let(:control_service) do
          described_class.new(
            control_artifacts,
            pick_up_at: Time.current,
            skip_projects_on_refresh: skip_projects_on_refresh
          )
        end

        before do
          create(:project_build_artifacts_size_refresh, :pending, project: control_artifact_on_refresh.project)
          create(:project_build_artifacts_size_refresh, :pending, project: other_artifact_on_refresh.project)
          create(:project_build_artifacts_size_refresh, :pending, project: other_artifact_on_refresh_2.project)
        end

        it 'does not make multiple queries when fetching multiple project refresh records' do
          control = ActiveRecord::QueryRecorder.new { control_service.execute }

          expect { subject }.not_to exceed_query_limit(control)
        end
      end

      context 'and skip_projects_on_refresh is set to false (default)' do
        it 'logs the projects undergoing refresh and continues with the delete', :aggregate_failures do
          expect(Gitlab::ProjectStatsRefreshConflictsLogger).to receive(:warn_artifact_deletion_during_stats_refresh).with(
            method: 'Ci::JobArtifacts::DestroyBatchService#execute',
            project_id: artifact_under_refresh_1.project.id
          ).once

          expect(Gitlab::ProjectStatsRefreshConflictsLogger).to receive(:warn_artifact_deletion_during_stats_refresh).with(
            method: 'Ci::JobArtifacts::DestroyBatchService#execute',
            project_id: artifact_under_refresh_2.project.id
          ).once

          expect { subject }.to change { Ci::JobArtifact.count }.by(-4)
        end

        it_behaves_like 'avoiding N+1 queries'
      end

      context 'and skip_projects_on_refresh is set to true' do
        let(:skip_projects_on_refresh) { true }

        it 'logs the projects undergoing refresh and excludes the artifacts from deletion', :aggregate_failures do
          expect(Gitlab::ProjectStatsRefreshConflictsLogger).to receive(:warn_skipped_artifact_deletion_during_stats_refresh).with(
            method: 'Ci::JobArtifacts::DestroyBatchService#execute',
            project_ids: match_array([artifact_under_refresh_1.project.id, artifact_under_refresh_2.project.id])
          )

          expect { subject }.to change { Ci::JobArtifact.count }.by(-1)
          expect(Ci::JobArtifact.where(id: artifact_under_refresh_1.id)).to exist
          expect(Ci::JobArtifact.where(id: artifact_under_refresh_2.id)).to exist
          expect(Ci::JobArtifact.where(id: artifact_under_refresh_3.id)).to exist
        end

        it_behaves_like 'avoiding N+1 queries'
      end
    end

    context 'ProjectStatistics' do
      it 'resets project statistics' do
        expect(ProjectStatistics).to receive(:increment_statistic).once
          .with(artifact_with_file.project, :build_artifacts_size, -artifact_with_file.file.size)
          .and_call_original
        expect(ProjectStatistics).to receive(:increment_statistic).once
          .with(artifact_without_file.project, :build_artifacts_size, 0)
          .and_call_original

        execute
      end

      context 'with update_stats: false' do
        it 'does not update project statistics' do
          expect(ProjectStatistics).not_to receive(:increment_statistic)

          service.execute(update_stats: false)
        end

        it 'returns size statistics' do
          expected_updates = {
            statistics_updates: {
              artifact_with_file.project => -artifact_with_file.file.size,
              artifact_without_file.project => 0
            }
          }

          expect(service.execute(update_stats: false)).to match(
            a_hash_including(expected_updates))
        end
      end
    end

    context 'when failed to destroy artifact' do
      context 'when the import fails' do
        before do
          expect(Ci::DeletedObject)
            .to receive(:bulk_import)
            .once
            .and_raise(ActiveRecord::RecordNotDestroyed)
        end

        it 'raises an exception and stop destroying' do
          expect { execute }.to raise_error(ActiveRecord::RecordNotDestroyed)
                            .and not_change { Ci::JobArtifact.count }
        end
      end
    end

    context 'when there are no artifacts' do
      let(:artifacts) { Ci::JobArtifact.none }

      it 'does not raise error' do
        expect { execute }.not_to raise_error
      end

      it 'reports the number of destroyed artifacts' do
        is_expected.to eq(destroyed_artifacts_count: 0, statistics_updates: {}, status: :success)
      end
    end

    context 'with artifacts that has backfilled expire_at' do
      let!(:created_on_00_30_45_minutes_on_21_22_23) do
        [
          create(:ci_job_artifact, expire_at: Time.zone.parse('2022-01-21 00:00:00.000')),
          create(:ci_job_artifact, expire_at: Time.zone.parse('2022-01-21 01:30:00.000')),
          create(:ci_job_artifact, expire_at: Time.zone.parse('2022-01-22 12:00:00.000')),
          create(:ci_job_artifact, expire_at: Time.zone.parse('2022-01-22 12:30:00.000')),
          create(:ci_job_artifact, expire_at: Time.zone.parse('2022-01-23 23:00:00.000')),
          create(:ci_job_artifact, expire_at: Time.zone.parse('2022-01-23 23:30:00.000')),
          create(:ci_job_artifact, expire_at: Time.zone.parse('2022-01-23 06:45:00.000'))
        ]
      end

      let!(:created_close_to_00_or_30_minutes) do
        [
          create(:ci_job_artifact, expire_at: Time.zone.parse('2022-01-21 00:00:00.001')),
          create(:ci_job_artifact, expire_at: Time.zone.parse('2022-01-21 00:30:00.999'))
        ]
      end

      let!(:created_on_00_or_30_minutes_on_other_dates) do
        [
          create(:ci_job_artifact, expire_at: Time.zone.parse('2022-01-01 00:00:00.000')),
          create(:ci_job_artifact, expire_at: Time.zone.parse('2022-01-19 12:00:00.000')),
          create(:ci_job_artifact, expire_at: Time.zone.parse('2022-01-24 23:30:00.000'))
        ]
      end

      let!(:created_at_other_times) do
        [
          create(:ci_job_artifact, expire_at: Time.zone.parse('2022-01-19 00:00:00.000')),
          create(:ci_job_artifact, expire_at: Time.zone.parse('2022-01-19 00:30:00.000')),
          create(:ci_job_artifact, expire_at: Time.zone.parse('2022-01-24 00:00:00.000')),
          create(:ci_job_artifact, expire_at: Time.zone.parse('2022-01-24 00:30:00.000'))
        ]
      end

      let(:artifacts_to_keep) { created_on_00_30_45_minutes_on_21_22_23 }
      let(:artifacts_to_delete) { created_close_to_00_or_30_minutes + created_on_00_or_30_minutes_on_other_dates + created_at_other_times }
      let(:all_artifacts) { artifacts_to_keep + artifacts_to_delete }

      let(:artifacts) { Ci::JobArtifact.where(id: all_artifacts.map(&:id)) }

      it 'deletes job artifacts that do not have expire_at on 00, 30 or 45 minute of 21, 22, 23 of the month' do
        expect { subject }.to change { Ci::JobArtifact.count }.by(artifacts_to_delete.size * -1)
      end

      it 'keeps job artifacts that have expire_at on 00, 30 or 45 minute of 21, 22, 23 of the month' do
        expect { subject }.not_to change { Ci::JobArtifact.where(id: artifacts_to_keep.map(&:id)).count }
      end

      it 'removes expire_at on job artifacts that have expire_at on 00, 30 or 45 minute of 21, 22, 23 of the month' do
        subject

        expect(artifacts_to_keep.all? { |artifact| artifact.reload.expire_at.nil? }).to be(true)
      end

      context 'when feature flag is disabled' do
        before do
          stub_feature_flags(ci_detect_wrongly_expired_artifacts: false)
        end

        it 'deletes all job artifacts' do
          expect { subject }.to change { Ci::JobArtifact.count }.by(all_artifacts.size * -1)
        end
      end

      context 'when fix_expire_at is false' do
        let(:service) { described_class.new(artifacts, pick_up_at: Time.current, fix_expire_at: false) }

        it 'deletes all job artifacts' do
          expect { subject }.to change { Ci::JobArtifact.count }.by(all_artifacts.size * -1)
        end
      end
    end
  end
end