class RBS::Repository::GemRBS

def empty?
  versions.empty?
end

def find_best_version(version)
  best_version = Repository.find_best_version(version, version_names)
  versions[best_version]
end

def initialize(name:)
  @name = name
  @paths = []
  @versions = nil
end

def latest_version
  latest = version_names.last or raise
  versions[latest] or raise
end

def load!
  @versions = {}
  versions = @versions or raise
  paths.each do |gem_path|
    gem_path.each_child(false) do |child|
      next unless Gem::Version.correct?(child.to_s)
      if version = Gem::Version.create(child.to_s)
        unless version.prerelease?
          path = gem_path + child
          if prev = versions[version]
            RBS.logger.info { "Overwriting gem RBS in repository: gem=#{name}, prev_path=#{prev.path}, new_path=#{path}" }
          end
          versions[version] = VersionPath.new(gem: self, version: version, path: path)
        end
      end
    end
  end
end

def oldest_version
  oldest = version_names.first or raise
  versions[oldest] or raise
end

def version_names
  versions.keys.sort_by(&:version)
end

def versions
  load! unless @versions
  @versions or raise
end