require 'digest/sha1'

module SimpleCaptcha #:nodoc
  module Utils #:nodoc
    # Execute command with params and return output if exit status equal expected_outcodes
    def self.run(cmd, params = "", expected_outcodes = 0)
      command = %Q[#{cmd} #{params}].gsub(/\s+/, " ")
      command = "#{command} 2>&1"

      unless (image_magick_path = SimpleCaptcha.image_magick_path).blank?
        command = File.join(image_magick_path, command)
      end

      output = `#{command}`

      unless [expected_outcodes].flatten.include?($?.exitstatus)
        raise ::StandardError, "Error while running #{cmd}: #{output}"
      end

      output
    end

    def self.simple_captcha_value(key) #:nodoc
      SimpleCaptchaData.get_data(key).value rescue nil
    end

    def self.simple_captcha_passed!(key) #:nodoc
      SimpleCaptchaData.remove_data(key)
    end

    def self.generate_key(*args)
      args << (Time.now.to_f * 1_000_000_000).to_s
      Digest::SHA1.hexdigest(args.join)
    end
  end
end