youchan / hyalite

  module Logger

    ERROR_LEVELS = %i(error warn info debug)

    def self.log_level=(level)

      @log_level_index = ERROR_LEVELS.index(level)

    end

    def self.log_level

      @log_level_index ||= ERROR_LEVELS.index(:warn)

      ERROR_LEVELS[@log_level_index]

    end

    def self.error(obj)

      if self.log_level == :error

        output(:error, obj)

      end

    end

    def self.warn(obj)

      if @log_level_index <=  ERROR_LEVELS.index(:warn)

        output(:warn, obj)

      end

    end

    def self.info(obj)

      if @log_level_index <=  ERROR_LEVELS.index(:info)

        output(:info, obj)

      end

    end

    def self.output(level, obj)

      case obj

      when String

        puts "#{level.upcase}: #{obj}"

      else

        puts "#{level.upcase}: #{obj.inspect}"

      end

    end

  end

end