require 'spec_helper'
require 'fileutils'

describe Hillary::Slug do
  let(:version) do
    double(
      Hillary::Repo::Version,
      sluggable?: true,
      branch: 'dev',
      name: 'b26206aaf36207304d4fa583ce9837d0bdb48966',
      sha: 'b26206aaf36207304d4fa583ce9837d0bdb48966',
      dev?: true,
      master?: false,
      production?: false
    )
  end
  let(:out){StringIO.new}
  let(:logger) do
    Logger.new(out).tap do |logger|
    end
  end
  let(:bucket){double(Hillary::Slug::Bucket, write: nil, copy: nil, name: 'gz-slugbucket')}
  let(:path){File.expand_path('../../tmp/g3', __FILE__)}

  describe '.build' do
    context 'when the version is not sluggable' do
      before(:each){allow(version).to receive(:sluggable?){false}}

      it 'returns nil' do
        slug = described_class.build(path, version, logger: logger, bucket: bucket)
        expect(slug).to be_nil
      end
    end

    context 'when the version is sluggable' do
      let(:slug){double(Hillary::Slug)}

      it 'returns a slug' do
        expect(Hillary::Slug).to receive(:new).with(path, version, logger: logger, bucket: bucket){slug}
        expect(slug).to receive(:build)

        described_class.build(path, version, logger: logger, bucket: bucket)
      end
    end
  end

  describe '#build' do
    context 'when branch is dev' do
      subject(:slug){described_class.new(path, version, logger: logger, bucket: bucket)}
      let(:slug_name){'g3_slug_b26206aaf36207304d4fa583ce9837d0bdb48966.tar.gz'}
      let(:slug_path){Pathname.new(path).join('..', slug_name).expand_path}

      describe 'when everything is successful' do
        before(:each) do
          FileUtils.mkdir_p(path)
          allow(bucket).to receive(:write)
        end

        after(:each) do
          FileUtils.rm_rf(slug_path)
          FileUtils.rm_rf(path)
        end

        it 'creates the slug' do
          slug.build

          expect(File.exist?(slug_path)).to eq(true)
        end

        it 'writes the slug to the bucket' do
          expect(bucket).to receive(:write).with('dev/' + slug_name, slug_path)

          slug.build
        end

        it 'logs information about what is happening' do
          slug.build

          expect(out.string).to eq(
            "Creating slug g3_slug_b26206aaf36207304d4fa583ce9837d0bdb48966.tar.gz\n"\
            'Uploading g3_slug_b26206aaf36207304d4fa583ce9837d0bdb48966.tar.gz '\
            "to gz-slugbucket:/dev/g3_slug_b26206aaf36207304d4fa583ce9837d0bdb48966.tar.gz\n"
          )
        end
      end

      describe 'when archiving fails' do
        it 'raises an error' do
          expect{slug.build}.to raise_error(Hillary::Shellable::ExecutionError)
        end
      end
    end

    context 'when branch is master, but not production build' do
      let(:version) do
        double(
          Hillary::Repo::Version,
          sluggable?: true,
          branch: 'master',
          name: 'RC2014_01_01_01_01_01',
          sha: 'b26206aaf36207304d4fa583ce9837d0bdb48966',
          dev?: false,
          master?: true,
          production?: false
        )
      end

      subject(:slug){described_class.new(path, version, logger: logger, bucket: bucket)}

      it 'copies the canonical slug to rc slug name' do
        expect(bucket).to receive(:copy).with('dev/g3_slug_b26206aaf36207304d4fa583ce9837d0bdb48966.tar.gz', 'rc/g3_slug_RC2014_01_01_01_01_01.tar.gz')

        slug.build
      end

      it 'logs information about what is happening' do
        slug.build

        expect(out.string).to eq('Copying gz-slugbucket:/dev/g3_slug_b26206aaf36207304d4fa583ce9837d0bdb48966.tar.gz '\
          "to gz-slugbucket:/rc/g3_slug_RC2014_01_01_01_01_01.tar.gz\n"
        )
      end
    end

    context 'when branch is master and is a production build' do
      let(:version) do
        double(
          Hillary::Repo::Version,
          sluggable?: true,
          branch: 'master',
          name: '2014_01_01_01_01_01',
          sha: 'b26206aaf36207304d4fa583ce9837d0bdb48966',
          dev?: false,
          master?: true,
          production?: true
        )
      end

      subject(:slug){described_class.new(path, version, logger: logger, bucket: bucket)}

      it 'copies the canonical slug to production slug name' do
        expect(bucket).to receive(:copy).with(
          'dev/g3_slug_b26206aaf36207304d4fa583ce9837d0bdb48966.tar.gz',
          'production/g3_slug_2014_01_01_01_01_01.tar.gz'
        )

        slug.build
      end

      it 'logs information about what is happening' do
        slug.build

        expect(out.string).to eq(
          'Copying gz-slugbucket:/dev/g3_slug_b26206aaf36207304d4fa583ce9837d0bdb48966.tar.gz '\
          "to gz-slugbucket:/production/g3_slug_2014_01_01_01_01_01.tar.gz\n"
        )
      end
    end
  end
end