require 'rake_helper'

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

  describe 'cleanup namespaces and repos' do
    let(:gitlab_shell) { Gitlab::Shell.new }
    let(:storage) { storages.keys.first }
    let(:storages) do
      {
        'default' => Gitlab::GitalyClient::StorageSettings.new(@default_storage_hash.merge('path' => 'tmp/tests/default_storage'))
      }
    end

    before(:all) do
      @default_storage_hash = Gitlab.config.repositories.storages.default.to_h
    end

    before do
      allow(Gitlab.config.repositories).to receive(:storages).and_return(storages)
    end

    after do
      Gitlab::GitalyClient::StorageService.new(storage).delete_all_repositories
    end

    describe 'cleanup:repos' do
      before do
        gitlab_shell.add_namespace(storage, 'broken/project.git')
        gitlab_shell.add_namespace(storage, '@hashed/12/34/5678.git')
      end

      it 'moves it to an orphaned path' do
        now = Time.now

        Timecop.freeze(now) do
          run_rake_task('gitlab:cleanup:repos')
          repo_list = Gitlab::GitalyClient::StorageService.new(storage).list_directories(depth: 0)

          expect(repo_list.last).to include("broken+orphaned+#{now.to_i}")
        end
      end

      it 'ignores @hashed repos' do
        run_rake_task('gitlab:cleanup:repos')

        expect(gitlab_shell.exists?(storage, '@hashed/12/34/5678.git')).to be(true)
      end
    end

    describe 'cleanup:dirs' do
      it 'removes missing namespaces' do
        gitlab_shell.add_namespace(storage, "namespace_1/project.git")
        gitlab_shell.add_namespace(storage, "namespace_2/project.git")
        allow(Namespace).to receive(:pluck).and_return(['namespace_1'])

        stub_env('REMOVE', 'true')
        run_rake_task('gitlab:cleanup:dirs')

        expect(gitlab_shell.exists?(storage, 'namespace_1')).to be(true)
        expect(gitlab_shell.exists?(storage, 'namespace_2')).to be(false)
      end

      it 'ignores @hashed directory' do
        gitlab_shell.add_namespace(storage, '@hashed/12/34/5678.git')

        run_rake_task('gitlab:cleanup:dirs')

        expect(gitlab_shell.exists?(storage, '@hashed/12/34/5678.git')).to be(true)
      end
    end
  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(1).times

      allow(logger).to receive(:info).at_least(1).times
      allow(logger).to receive(:debug).at_least(1).times
    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

  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