#--
# Copyright 2007 by Stefan Rusterholz.
# All rights reserved.
# See LICENSE.txt for permissions.
#++



require 'ruby/file/write'



class Butler
	IsGem = true # REPLACE: IsGem = false

	# This Class provides services to botcontrol
	# For gems, this class uses the Gem module to get information on the where-
	# abouts of data. If installed using rake from tarball, it is hard-coded.
	class Control
		attr_reader :dialog
		attr_reader :config
		attr_reader :path

		def initialize
			@path = OpenStruct.new({
				:template => Gem.datadir("butler")+'/config_template.yaml', # DELETE
				:config   => Gem.datadir("butler")+'/config.yaml',          # REPLACE: :config   => %CONFIG_DIR%+'/config.yaml',
				:dialogs  => Gem.datadir("butler")+'/dialogs',              # REPLACE: :dialogs  => %DIALOGS_DIR%,
				:plugins  => Gem.datadir("butler")+'/plugins',              # REPLACE: :plugins  => %PLUGINS_DIR%,
				:services => Gem.datadir("butler")+'/services',             # REPLACE: :services => %SERVICES_DIR%,
				:strings  => Gem.datadir("butler")+'/strings',              # REPLACE: :strings  => %STRINGS_DIR%,
				:man      => Gem.datadir("butler")+'/man1',                 # DELETE
			})
			File.write(@path.config, File.read(@path.template)) unless File.exist?(@path.config)
			@config = OpenStruct.new(YAML.load_file(@path.config))
			@dialog = DialogLine.new(@path.dialogs, @config.language)
		end

		def user(name=nil)
			# use Etc.getlogin?
			name || ENV['SUDO_USER'] || ENV['USER'] || @dialog.discuss("username", false)[:username]
		end

		def configured?(user=nil)
			path = @config.users[user(user)]
			path && File.exist?(path)
		end

		def configure_user(user=nil)
			raise Errno::EACCES unless File.writable?(@path.config)
			user      ||= user()
			installer   = Installer.new("butler")
			user_config = @dialog.discuss(:botcontrol, false,
				:installer  => installer,
				:user       => user,
				:path       => path
			)
			path = @config.users[user] = user_config.delete(:config)+"/config.yaml"
			user_config[:language] = "en" # FIXME multilingualize
			update_config
			FileUtils.mkdir_p(File.dirname(path))
			#FileUtils.chown(user, nil, File.dirname(path))
			File.write(path, user_config.to_yaml)
			#FileUtils.chown(user, nil, path)
			OpenStruct.new(@config.users[user])
		end

		def update_config
			File.write(@path.config, @config.to_hash.to_yaml)
		end

		def user_config(user=nil)
			path        = @config.users[user(user)]
			user_config = OpenStruct.new(YAML.load_file(path))
			user_config.plugin_repository  = @path.plugins
			user_config.service_repository = @path.services
			user_config
		end

		def butler_path(user=nil)
			path        = @config.users[user(user)]
			user_config = OpenStruct.new(YAML.load_file(path))
			user_config.plugin_repository  = @path.plugins
			user_config.service_repository = @path.services
			user_config
		end

		def discuss(dir, lang=nil, variables={}, &block)
			@dialog.discuss(dir, lang, variables.merge(:botcontrol => self), &block)
		end

		def language
			"en"
		end
	end
end