class Ferrum::Browser::Command

def self.build(options, user_data_dir)
  defaults = case options.browser_name
             when :firefox
               Options::Firefox.options
             when :chrome, :opera, :edge, nil
               Options::Chrome.options
             else
               raise NotImplementedError, "not supported browser"
             end
  new(defaults, options, user_data_dir)
end

def headless_new?
  @flags["headless"] == "new"
end

def initialize(defaults, options, user_data_dir)
  @flags = {}
  @defaults = defaults
  @options = options
  @user_data_dir = user_data_dir
  @path = options.browser_path || ENV.fetch("BROWSER_PATH", nil) || defaults.detect_path
  raise BinaryNotFoundError, NOT_FOUND unless @path
  merge_options
end

def merge_options
  @flags = defaults.merge_required(@flags, options, @user_data_dir)
  @flags = defaults.merge_default(@flags, options) unless options.ignore_default_browser_options
  @flags.merge!(options.browser_options)
end

def to_a
  [path] + @flags.map { |k, v| v.nil? ? "--#{k}" : "--#{k}=#{v}" }
end

def to_s
  to_a.join(" \\ \n  ")
end

def xvfb?
  !!options.xvfb
end