module Kook
	class View
		attr_reader :name, :path, :commands
		attr_accessor :description
		VIEW_NAME_MIN_SIZE = 4
		VIEW_NAME_MAX_SIZE = 12

		def initialize name, path=nil
			self.class.validate_name name
			@name = name
			@path = path
			@commands = []
		end

		def self.validate_name name
			raise "TooShortViewIdentifier" if name.size < View::VIEW_NAME_MIN_SIZE
			raise "TooLongViewIdentifier" if name.size > View::VIEW_NAME_MAX_SIZE
			if not name =~ /^[\w-]+$/ then
				raise "BadViewIdentifier #{name}" 
			end
			return true
		end

		def to_hash
			return { 
				'view' => @name,
				'path' => @path,
				'commands' => @commands
			}
		end

		def add_command command
			@commands << command
		end

		def rm_command command_index
			@command.delete command_index
		end

		def self.from_hash view_hash
			view = View.new view_hash['view'], view_hash['path']
			view_hash['commands'].each do |c|
				view.add_command c
			end
			return view
		end
	end
end