require 'spec_helper'
require 'grit'
require 'fileutils'

describe Hillary::Repo do
  shared_context 'specific time' do
    around(:each) do |example|
      Timecop.freeze(Time.at(0)) do
        example.call
      end
    end
  end

  describe '.rc_tag_name' do
    include_context 'specific time'

    it 'generates an RC tag name' do
      expect(described_class.rc_tag_name).to eq('RC1969_12_31_19_00_00')
    end

    it 'matches the RC tag format' do
      expect(described_class.rc_tag_name).to match(described_class::RC_TAG_REGEX)
    end
  end

  describe '.production_tag_name' do
    include_context 'specific time'

    it 'generates an production tag name' do
      expect(described_class.production_tag_name).to eq('1969_12_31_19_00_00')
    end

    it 'matches the production tag format' do
      expect(described_class.production_tag_name).to match(described_class::PRODUCTION_TAG_REGEX)
    end
  end

  describe '#checkout' do
    include_context 'git repository'

    context 'when called with a branch that exists' do
      before(:each) do
        local_repo.git.branch({}, 'dev')
        remote_repo.git.branch({}, 'dev')
        add_file_to_remote('chicken.txt', 'chicken', 'dev')
        repo.checkout('dev')
      end

      it 'checks out the specified branch' do
        expect(local_repo.head.name).to eq('dev')
      end

      it 'updates the local branch from remote' do
        expect(File.exist?('chicken.txt')).to eq(true)
      end

      it 'displays information about what is happening' do
        expect(out.string).to eq("Checking out dev and updating from origin\n")
      end
    end

    context 'when called with a branch that does not exist' do
      it 'raises MissingHeadError' do
        expect{repo.checkout('dev')}.to raise_error(Hillary::Repo::MissingHeadError)
      end

      it 'displays information about what is happening' do
        repo.checkout('dev') rescue nil

        expect(out.string).to eq("Checking out dev and updating from origin\n")
      end
    end

    context 'when called on a repository that is dirty' do
      before(:each) do
        FileUtils.touch('blah')
        local_repo.add('blah')
      end

      it 'raises DirtyProjectError' do
        expect{repo.checkout('dev')}.to raise_error(Hillary::Repo::DirtyProjectError)
      end
    end
  end

  describe '#create_rc_tag' do
    include_context 'git repository'

    before(:each){repo.create_rc_tag('master', 'RC1969_12_31_19_00_00')}
    let(:local_master){local_repo.get_head('master')}
    let(:local_tag){local_repo.tags.first}
    let(:remote_tag){remote_repo.tags.first}

    it 'creates a tag pointing to the same commit as master' do
      expect(local_tag.commit.sha).to eq(local_master.commit.sha)
    end

    it 'pushes the tag to origin' do
      expect(remote_tag.commit.sha).to eq(local_master.commit.sha)
    end

    it 'displays information about what is happening' do
      expect(out.string).to match(
        %r{Tagging origin/master \([\da-f]+\) as RC1969_12_31_19_00_00\nPushing RC1969_12_31_19_00_00 to origin\n}
      )
    end
  end

  describe '#create_production_tag' do
    include_context 'git repository'

    before(:each) do
      repo.create_rc_tag('master', 'RC1969_12_31_19_00_00')
      repo.create_production_tag('2001_11_11_11_11_11')
    end

    let(:local_rc_tag){local_repo.tags.find{|tag| tag.name == 'RC1969_12_31_19_00_00'}}
    let(:local_production_tag){local_repo.tags.find{|tag| tag.name == '2001_11_11_11_11_11'}}
    let(:remote_production_tag){remote_repo.tags.find{|tag| tag.name == '2001_11_11_11_11_11'}}

    it 'creates a tag pointing to the last RC' do
      expect(local_production_tag.commit.sha).to eq(local_rc_tag.commit.sha)
    end

    it 'pushes the tag to origin' do
      expect(remote_production_tag.commit.sha).to eq(local_rc_tag.commit.sha)
    end

    it 'displays information about what is happening' do
      expect(out.string).to match(
        %r{Tagging origin/master \([\da-f]+\) as RC1969_12_31_19_00_00\nPushing RC1969_12_31_19_00_00 to origin\nTagging RC1969_12_31_19_00_00 \([\da-f]+\) as 2001_11_11_11_11_11\nPushing 2001_11_11_11_11_11 to origin\n}
      )
    end
  end
end