class Byebug::Setting

def [](name)
  settings[name].value
end

def []=(name, value)
  settings[name].value = value
end

def boolean?
  [true, false].include?(value)
end

def find(shortcut)
  abbr = shortcut =~ /^no/ ? shortcut[2..-1] : shortcut
  matches = settings.select do |key, value|
    value.boolean? ? key =~ /#{abbr}/ : key =~ /#{shortcut}/
  end
  matches.size == 1 ? matches.values.first : nil
end

def help
  "\n  #{banner}.\n\n"
end

def help(cmd, subcmd)
  unless subcmd
    command = Byebug.const_get("#{cmd.capitalize}Command")
    return command.description + help_all
  end
  setting = find(subcmd)
  prettify <<-EOS
    #{cmd} #{setting.to_sym} <value>
    #{setting.banner}.
  EOS
end

def help_all
  output = "  List of settings supported in byebug:\n  --\n"
  width = settings.keys.max_by(&:size).size
  settings.values.each do |sett|
    output << format("  %-#{width}s -- %s\n", sett.to_sym, sett.banner)
  end
  output + "\n"
end

def initialize
  @value = self.class::DEFAULT
end

def integer?
  Integer(value) ? true : false
rescue ArgumentError
  false
end

def settings
  @settings ||= {}
end

def to_s
  "#{to_sym} is #{value ? 'on' : 'off'}\n"
end

def to_sym
  name = self.class.name.gsub(/^Byebug::/, '').gsub(/Setting$/, '')
  name.gsub(/(.)([A-Z])/, '\1_\2').downcase.to_sym
end