module Helpers

  class CI
    DEFAULT_BUILD_NO = '1'

    def self.tagged_build?(travis_tag='')
      travis_tag = !travis_tag.empty? ? travis_tag : ENV['TRAVIS_TAG'] || ''
      !travis_tag.empty? && !(travis_tag == 'EMPTY') #magic default value used by legacy build scripts
    end

    def self.build_no
      ENV["TRAVIS_BUILD_NUMBER"] || ENV["CIRCLE_BUILD_NUM"] || DEFAULT_BUILD_NO
    end

    def self.branch
      ENV['TRAVIS_BRANCH'] || ENV['CIRCLE_BRANCH']
    end

    def self.repo
      ENV['TRAVIS_REPO_SLUG'] || ENV['CIRCLE_PROJECT_REPONAME']
    end

    def self.version_suffix
      ENV['VERSION_SUFFIX'] || ''
    end

    def self.commit
      ENV['TRAVIS_COMMIT'] || ENV['CIRCLE_SHA1']
    end
  end
end