halogenandtoast/timelord

module Timelord
  class MatcherLoader
    def load_all
      matchers = files.map { |file| get_class(file) }
      sort_matchers(matchers) + [NoMatcher]
    end

    private

    def files
      Dir.glob(File.join(File.dirname(__FILE__), "matchers", "**"))
    end

    def get_class(file)
      require file
      Timelord.const_get(get_class_name(file))
    end

    def get_class_name(file)
      File.basename(file, ".rb").
        gsub(/(_[a-z])/) { |a| a[1..-1].upcase }.
        gsub(/^[a-z]/) { |a| a.upcase }
    end

    def sort_matchers(matchers)
      matchers.sort { |a, b| b::REGEX.to_s.length <=> a::REGEX.to_s.length }
    end
  end
end