# frozen_string_literal: true

require 'spec_helper'

RSpec.describe Projects::AfterImportService do
  include GitHelpers

  subject { described_class.new(project) }

  let(:project) { create(:project, :repository) }
  let(:repository) { project.repository }
  let(:sha) { project.commit.sha }
  let(:housekeeping_service) { double(:housekeeping_service) }

  describe '#execute' do
    before do
      allow(Projects::HousekeepingService)
        .to receive(:new).with(project).and_return(housekeeping_service)

      allow(housekeeping_service)
        .to receive(:execute).and_yield

      allow(housekeeping_service).to receive(:increment!)
    end

    it 'performs housekeeping' do
      subject.execute

      expect(housekeeping_service).to have_received(:execute)
    end

    context 'with some refs in refs/pull/**/*' do
      before do
        repository.write_ref('refs/pull/1/head', sha)
        repository.write_ref('refs/pull/1/merge', sha)

        subject.execute
      end

      it 'removes refs/pull/**/*' do
        expect(rugged.references.map(&:name))
          .not_to include(%r{\Arefs/pull/})
      end
    end

    Repository::RESERVED_REFS_NAMES.each do |name|
      context "with a ref in refs/#{name}/tmp" do
        before do
          repository.write_ref("refs/#{name}/tmp", sha)

          subject.execute
        end

        it "does not remove refs/#{name}/tmp" do
          expect(rugged.references.map(&:name))
            .to include("refs/#{name}/tmp")
        end
      end
    end

    context 'when after import action throw non-retriable exception' do
      let(:exception) { StandardError.new('after import error') }

      before do
        allow(repository)
          .to receive(:delete_all_refs_except)
          .and_raise(exception)
      end

      it 'throws after import error' do
        expect { subject.execute }.to raise_exception('after import error')
      end
    end

    context 'when after import action throw retriable exception one time' do
      let(:exception) { GRPC::DeadlineExceeded.new }

      before do
        expect(repository)
          .to receive(:delete_all_refs_except)
          .and_raise(exception)
        expect(repository)
          .to receive(:delete_all_refs_except)
          .and_call_original

        subject.execute
      end

      it 'removes refs/pull/**/*' do
        expect(rugged.references.map(&:name))
          .not_to include(%r{\Arefs/pull/})
      end

      it 'records the failures in the database', :aggregate_failures do
        import_failure = ImportFailure.last

        expect(import_failure.source).to eq('delete_all_refs')
        expect(import_failure.project_id).to eq(project.id)
        expect(import_failure.relation_key).to be_nil
        expect(import_failure.relation_index).to be_nil
        expect(import_failure.exception_class).to eq('GRPC::DeadlineExceeded')
        expect(import_failure.exception_message).to be_present
        expect(import_failure.correlation_id_value).not_to be_empty
      end
    end

    def rugged
      rugged_repo(repository)
    end
  end
end