# frozen_string_literal: true

require 'spec_helper'

RSpec.describe ObjectStorage::CDN, feature_category: :build_artifacts do
  let(:uploader_class) do
    Class.new(GitlabUploader) do
      include ObjectStorage::Concern
      include ObjectStorage::CDN::Concern

      private

      # user/:id
      def dynamic_segment
        File.join(model.class.underscore, model.id.to_s)
      end
    end
  end

  let(:object) { build_stubbed(:user) }
  let(:public_ip) { '18.245.0.1' }
  let(:query_params) { { foo: :bar } }

  let_it_be(:project) { build(:project) }

  subject { uploader_class.new(object, :file) }

  context 'with CDN config' do
    let(:cdn_options) do
      {
        'object_store' => {
          'cdn' => {
            'provider' => cdn_provider,
            'url' => 'https://gitlab.example.com',
            'key_name' => 'test-key',
            'key' => Base64.urlsafe_encode64('12345')
          }
        }
      }.freeze
    end

    before do
      stub_artifacts_object_storage(enabled: true)
      options = Gitlab.config.uploads.deep_merge(cdn_options)
      allow(uploader_class).to receive(:options).and_return(options)
    end

    context 'with a known CDN provider' do
      let(:cdn_provider) { 'google' }

      describe '#cdn_enabled_url' do
        it 'calls #cdn_signed_url' do
          expect(subject).not_to receive(:url)
          expect(subject).to receive(:cdn_signed_url).with(query_params).and_call_original

          result = subject.cdn_enabled_url(public_ip, query_params)

          expect(result.used_cdn).to be true
        end
      end

      describe '#use_cdn?' do
        it 'returns true' do
          expect(subject.use_cdn?(public_ip)).to be true
        end
      end

      describe '#cdn_signed_url' do
        it 'returns a URL' do
          expect_next_instance_of(ObjectStorage::CDN::GoogleCDN) do |cdn|
            expect(cdn).to receive(:signed_url).and_return("https://cdn.example.com/path")
          end

          expect(subject.cdn_signed_url).to eq("https://cdn.example.com/path")
        end
      end
    end

    context 'with an unknown CDN provider' do
      let(:cdn_provider) { 'amazon' }

      it 'raises an error' do
        expect { subject.use_cdn?(public_ip) }.to raise_error("Unknown CDN provider: amazon")
      end
    end
  end

  context 'without CDN config' do
    describe '#cdn_enabled_url' do
      it 'calls #url' do
        expect(subject).not_to receive(:cdn_signed_url)
        expect(subject).to receive(:url).with(query: query_params).and_call_original

        result = subject.cdn_enabled_url(public_ip, query_params)

        expect(result.used_cdn).to be false
      end
    end

    describe '#use_cdn?' do
      it 'returns false' do
        expect(subject.use_cdn?(public_ip)).to be false
      end
    end
  end
end