# frozen_string_literal: true

require 'spec_helper'

RSpec.describe ContainerRegistry::Blob do
  let(:group) { create(:group, name: 'group') }
  let(:project) { create(:project, path: 'test', group: group) }

  let(:repository) do
    create(:container_repository, name: 'image', tags: %w[latest rc1], project: project)
  end

  let(:config) do
    { 'digest' => 'sha256:0123456789012345',
      'mediaType' => 'binary',
      'size' => 1000 }
  end

  let(:blob) { described_class.new(repository, config) }

  before do
    stub_container_registry_config(enabled: true, api_url: 'http://registry.gitlab', host_port: 'registry.gitlab')
  end

  it { expect(blob).to respond_to(:repository) }
  it { expect(blob).to delegate_method(:registry).to(:repository) }
  it { expect(blob).to delegate_method(:client).to(:repository) }

  describe '#path' do
    it 'returns a valid path to the blob' do
      expect(blob.path).to eq('group/test/image@sha256:0123456789012345')
    end
  end

  describe '#digest' do
    it 'return correct digest value' do
      expect(blob.digest).to eq 'sha256:0123456789012345'
    end
  end

  describe '#type' do
    it 'returns a correct type' do
      expect(blob.type).to eq 'binary'
    end
  end

  describe '#revision' do
    it 'returns a correct blob SHA' do
      expect(blob.revision).to eq '0123456789012345'
    end
  end

  describe '#short_revision' do
    it 'return a short SHA' do
      expect(blob.short_revision).to eq '012345678'
    end
  end

  describe '#delete' do
    before do
      stub_request(:delete, 'http://registry.gitlab/v2/group/test/image/blobs/sha256:0123456789012345')
        .to_return(status: 200)
    end

    it 'returns true when blob has been successfully deleted' do
      expect(blob.delete).to be_truthy
    end
  end

  describe '#data' do
    context 'when locally stored' do
      before do
        stub_request(:get, 'http://registry.gitlab/v2/group/test/image/blobs/sha256:0123456789012345')
          .to_return(
            status: 200,
            headers: { 'Content-Type' => 'application/json' },
            body: '{"key":"value"}')
      end

      it 'returns a correct blob data' do
        expect(blob.data).to eq '{"key":"value"}'
      end
    end

    context 'when externally stored' do
      let(:location) { 'http://external.com/blob/file' }

      before do
        stub_request(:get, 'http://registry.gitlab/v2/group/test/image/blobs/sha256:0123456789012345')
          .with(headers: { 'Authorization' => 'bearer token' })
          .to_return(
            status: 307,
            headers: { 'Location' => location })
      end

      context 'for a valid address' do
        before do
          stub_request(:get, location)
            .with { |request| request.headers.exclude?('Authorization') }
            .to_return(
              status: 200,
              headers: { 'Content-Type' => 'application/json' },
              body: '{"key":"value"}')
        end

        it 'returns correct data' do
          expect(blob.data).to eq '{"key":"value"}'
        end
      end

      context 'for a relative address' do
        before do
          stub_request(:get, 'http://registry.gitlab/relative')
            .with { |request| request.headers.exclude?('Authorization') }
            .to_return(
              status: 200,
              headers: { 'Content-Type' => 'application/json' },
              body: '{"key":"value"}')
        end

        let(:location) { '/relative' }

        it 'returns correct data' do
          expect(blob.data).to eq '{"key":"value"}'
        end
      end

      context 'for invalid file' do
        let(:location) { 'file:///etc/passwd' }

        it 'raises an error' do
          expect { blob.data }.to raise_error(ArgumentError, 'Invalid scheme for file:///etc/passwd')
        end
      end
    end
  end
end
