basestylo/Tweakphoeus

# frozen_string_literal: true

module Tweakphoeus
  # User agent data generator
  class UserAgent
    OS_DATA = {
      types: %i[win linux mac],
      linux_distro: ['Ubuntu', 'Debian', 'Fedora', 'gNewSense', 'Linux Mint', 'OpenSUSE', 'Mandriva'],
      arch: %w[x86 x86_64],
      win_arch: ['Win64; x64', 'WOW64']
    }.freeze

    class << self
      def random(systems: OS_DATA[:types])
        user_agent = "Mozilla/5.0 (#{os[systems.sample]}) #{browser}"
        firefox_version = user_agent.match(%r{Firefox/([0-9.]+)})
        user_agent.gsub(')', "; rv:#{firefox_version[1]})") if firefox_version.is_a?(MatchData)
      end

      private

      def os
        {
          win: "Windows NT #{"#{%w[5 6 7 8 10].sample}.#{%w[0 1].sample}"}",
          linux: "X11; #{['', "#{OS_DATA[:linux_distro].sample}; "].sample}Linux #{OS_DATA[:arch].sample}",
          mac: "Macintosh; Intel Mac OS X 10_#{Random.rand(11..13)}_#{Random.rand(0..3)}"
        }
      end

      def browser
        chrome_version = "Chrome/#{Random.rand(90..92)}.0.#{Random.rand(1000..4000)}.#{Random.rand(100..900)}"
        webkit603 = "603.#{Random.rand(0..9)}.#{Random.rand(0..9)}"
        ["Gecko/20100101 Firefox/#{Random.rand(82..90)}.0",
         "AppleWebKit/537.36 (KHTML, like Gecko) #{chrome_version} Safari/537.36",
         "AppleWebKit/#{webkit603} (KHTML, like Gecko) Version/10.1 #{chrome_version} Safari/#{webkit603}"].sample
      end
    end
  end
end