class Samovar::Nested

def initialize(name, commands, key: :command)
	@name = name
	@commands = commands
	@key = key
end

def parse(input)
	if command = @commands[input.first]
		input.shift
		
		# puts "Instantiating #{command} with #{input}"
		command.new(input)
	end
end

def to_a
	[@name, "One of #{@commands.keys.join(', ')}."]
end

def to_s
	@name
end

def usage(rows)
	rows << self
	
	@commands.each do |key, klass|
		klass.usage(rows, key)
	end
end