# frozen_string_literal: true

require 'rake_helper'

RSpec.describe 'gitlab:cleanup rake tasks' do
  before do
    Rake.application.rake_require 'tasks/gitlab/cleanup'
  end

  # A single integration test that is redundant with one part of the
  # Gitlab::Cleanup::ProjectUploads spec.
  #
  # Additionally, this tests DRY_RUN env var values, and the extra line of
  # output that says you can disable DRY_RUN if it's enabled.
  describe 'cleanup:project_uploads' do
    let!(:logger) { double(:logger) }

    before do
      expect(main_object).to receive(:logger).and_return(logger).at_least(:once)

      allow(logger).to receive(:info).at_least(:once)
      allow(logger).to receive(:debug).at_least(:once)
    end

    context 'with a fixable orphaned project upload file' do
      let(:orphaned) { create(:upload, :issuable_upload, :with_file, model: build(:project, :legacy_storage)) }
      let(:new_path) { orphaned.absolute_path }
      let(:path) { File.join(FileUploader.root, 'some', 'wrong', 'location', orphaned.path) }

      before do
        FileUtils.mkdir_p(File.dirname(path))
        FileUtils.mv(new_path, path)
      end

      context 'with DRY_RUN disabled' do
        before do
          stub_env('DRY_RUN', 'false')
        end

        it 'moves the file to its proper location' do
          run_rake_task('gitlab:cleanup:project_uploads')

          expect(File.exist?(path)).to be_falsey
          expect(File.exist?(new_path)).to be_truthy
        end

        it 'logs action as done' do
          expect(logger).to receive(:info).with("Looking for orphaned project uploads to clean up...")
          expect(logger).to receive(:info).with("Did fix #{path} -> #{new_path}")

          run_rake_task('gitlab:cleanup:project_uploads')
        end
      end

      shared_examples_for 'does not move the file' do
        it 'does not move the file' do
          run_rake_task('gitlab:cleanup:project_uploads')

          expect(File.exist?(path)).to be_truthy
          expect(File.exist?(new_path)).to be_falsey
        end

        it 'logs action as able to be done' do
          expect(logger).to receive(:info).with("Looking for orphaned project uploads to clean up. Dry run...")
          expect(logger).to receive(:info).with("Can fix #{path} -> #{new_path}")
          expect(logger).to receive(:info).with(/To clean up these files run this command with DRY_RUN=false/)

          run_rake_task('gitlab:cleanup:project_uploads')
        end
      end

      context 'with DRY_RUN explicitly enabled' do
        before do
          stub_env('DRY_RUN', 'true')
        end

        it_behaves_like 'does not move the file'
      end

      context 'with DRY_RUN set to an unknown value' do
        before do
          stub_env('DRY_RUN', 'foo')
        end

        it_behaves_like 'does not move the file'
      end

      context 'with DRY_RUN unset' do
        it_behaves_like 'does not move the file'
      end
    end
  end

  describe 'gitlab:cleanup:orphan_job_artifact_files' do
    subject(:rake_task) { run_rake_task('gitlab:cleanup:orphan_job_artifact_files') }

    it 'runs the task without errors' do
      expect(Gitlab::Cleanup::OrphanJobArtifactFiles)
        .to receive(:new).and_call_original

      expect { rake_task }.not_to raise_error
    end

    context 'with DRY_RUN set to false' do
      before do
        stub_env('DRY_RUN', 'false')
      end

      it 'passes dry_run correctly' do
        expect(Gitlab::Cleanup::OrphanJobArtifactFiles)
          .to receive(:new)
          .with(limit: anything,
                dry_run: false,
                niceness: anything,
                logger: anything)
          .and_call_original

        rake_task
      end
    end
  end

  describe 'gitlab:cleanup:orphan_lfs_file_references' do
    subject(:rake_task) { run_rake_task('gitlab:cleanup:orphan_lfs_file_references') }

    let(:project) { create(:project, :repository) }

    before do
      stub_env('PROJECT_ID', project.id)
    end

    it 'runs the task without errors' do
      expect(Gitlab::Cleanup::OrphanLfsFileReferences)
        .to receive(:new).and_call_original

      expect { rake_task }.not_to raise_error
    end

    context 'with DRY_RUN set to false' do
      before do
        stub_env('DRY_RUN', 'false')
      end

      it 'passes dry_run correctly' do
        expect(Gitlab::Cleanup::OrphanLfsFileReferences)
          .to receive(:new)
          .with(project,
                limit: anything,
                dry_run: false,
                logger: anything)
          .and_call_original

        rake_task
      end
    end

    context 'with LIMIT set to 100' do
      before do
        stub_env('LIMIT', '100')
      end

      it 'passes limit as integer' do
        expect(Gitlab::Cleanup::OrphanLfsFileReferences)
          .to receive(:new)
          .with(project,
                limit: 100,
                dry_run: true,
                logger: anything)
          .and_call_original

        rake_task
      end
    end
  end

  describe 'gitlab:cleanup:orphan_lfs_files' do
    subject(:rake_task) { run_rake_task('gitlab:cleanup:orphan_lfs_files') }

    it 'runs RemoveUnreferencedLfsObjectsWorker' do
      expect_any_instance_of(RemoveUnreferencedLfsObjectsWorker)
        .to receive(:perform)
        .and_call_original

      rake_task
    end
  end

  context 'sessions' do
    describe 'gitlab:cleanup:sessions:active_sessions_lookup_keys', :clean_gitlab_redis_shared_state do
      subject(:rake_task) { run_rake_task('gitlab:cleanup:sessions:active_sessions_lookup_keys') }

      let!(:user) { create(:user) }
      let(:existing_session_id) { '5' }

      before do
        Gitlab::Redis::SharedState.with do |redis|
          redis.set("session:user:gitlab:#{user.id}:#{existing_session_id}",
                    Marshal.dump(true))
          redis.sadd("session:lookup:user:gitlab:#{user.id}", (1..10).to_a)
        end
      end

      it 'runs the task without errors' do
        expect { rake_task }.not_to raise_error
      end

      it 'removes expired active session lookup keys' do
        Gitlab::Redis::SharedState.with do |redis|
          lookup_key = "session:lookup:user:gitlab:#{user.id}"
          expect { subject }.to change { redis.scard(lookup_key) }.from(10).to(1)
          expect(redis.smembers("session:lookup:user:gitlab:#{user.id}")).to(
            eql([existing_session_id]))
        end
      end
    end
  end
end