class UserAgent::Browsers::Vivaldi

def self.extend?(agent)
  agent.detect { |useragent| useragent.product == 'Vivaldi' }
end

def application
  self.reject { |agent| agent.comment.nil? || agent.comment.empty? }.first
end

def browser
  'Vivaldi'
end

def build
  webkit.version
end

def localization
  return unless application
  application.comment[3]
end

def os
  return unless application
  if application.comment[0] =~ /Windows NT/
    OperatingSystems.normalize_os(application.comment[0])
  elsif application.comment[2].nil?
    OperatingSystems.normalize_os(application.comment[1])
  elsif application.comment[1] =~ /Android/
    OperatingSystems.normalize_os(application.comment[1])
  else
    OperatingSystems.normalize_os(application.comment[2])
  end
end

def platform
  return unless application
  if application.comment[0] =~ /Windows/
    'Windows'
  elsif application.comment.any? { |c| c =~ /CrOS/ }
    'ChromeOS'
  elsif application.comment.any? { |c| c =~ /Android/ }
    'Android'
  else
    application.comment[0]
  end
end

def version
  last.version
end

def webkit
  detect_product("AppleWebKit")
end