# frozen_string_literal: true

require 'spec_helper'

RSpec.describe 'Group Dependency Proxy for containers', :js do
  include DependencyProxyHelpers

  include_context 'file upload requests helpers'

  let_it_be(:user) { create(:user) }
  let_it_be(:group) { create(:group) }
  let_it_be(:sha) { 'a3ed95caeb02ffe68cdd9fd84406680ae93d633cb16422d00e8a7c22955b46d4' }
  let_it_be(:content) { fixture_file_upload("spec/fixtures/dependency_proxy/#{sha}.gz").read }

  let(:image) { 'alpine' }
  let(:url) { capybara_url("/v2/#{group.full_path}/dependency_proxy/containers/#{image}/blobs/sha256:#{sha}") }
  let(:token) { 'token' }
  let(:headers) { { 'Authorization' => "Bearer #{build_jwt(user).encoded}" } }

  subject do
    HTTParty.get(url, headers: headers)
  end

  def run_server(handler)
    default_server = Capybara.server

    Capybara.server = Capybara.servers[:puma]
    server = Capybara::Server.new(handler)
    server.boot
    server
  ensure
    Capybara.server = default_server
  end

  let_it_be(:external_server) do
    handler = lambda do |env|
      if env['REQUEST_PATH'] == '/token'
        [200, {}, [{ token: 'token' }.to_json]]
      else
        [200, {}, [content]]
      end
    end

    run_server(handler)
  end

  before do
    stub_application_setting(allow_local_requests_from_web_hooks_and_services: true)
    stub_config(dependency_proxy: { enabled: true })
    group.add_developer(user)

    stub_const("DependencyProxy::Registry::AUTH_URL", external_server.base_url)
    stub_const("DependencyProxy::Registry::LIBRARY_URL", external_server.base_url)
  end

  shared_examples 'responds with the file' do
    it 'sends file' do
      expect(subject.code).to eq(200)
      expect(subject.body).to eq(content)
      expect(subject.headers.to_h).to include(
        "content-type" => ["application/gzip"],
        "content-disposition" => ["attachment; filename=\"#{sha}.gz\"; filename*=UTF-8''#{sha}.gz"],
        "content-length" => ["32"]
      )
    end
  end

  shared_examples 'caches the file' do
    it 'caches the file' do
      expect { subject }.to change {
        group.dependency_proxy_blobs.count
      }.from(0).to(1)

      expect(subject.code).to eq(200)
      expect(group.dependency_proxy_blobs.first.file.read).to eq(content)
    end
  end

  context 'fetching a blob' do
    context 'when the blob is cached for the group' do
      let!(:dependency_proxy_blob) { create(:dependency_proxy_blob, group: group) }

      it_behaves_like 'responds with the file'

      context 'dependency_proxy_workhorse feature flag disabled' do
        before do
          stub_feature_flags({ dependency_proxy_workhorse: false })
        end

        it_behaves_like 'responds with the file'
      end
    end
  end

  context 'when the blob must be downloaded' do
    it_behaves_like 'responds with the file'
    it_behaves_like 'caches the file'

    context 'dependency_proxy_workhorse feature flag disabled' do
      before do
        stub_feature_flags({ dependency_proxy_workhorse: false })
      end

      it_behaves_like 'responds with the file'
      it_behaves_like 'caches the file'
    end
  end
end