#This is a core class of Orbit Kernel. This class will register a module and set the properties defined in the module's initializer 
#file.
module OrbitApp
	module Module
		module Registration
			module ClassMethods
				
				@@registrations = []

				def new(name,&block)
					@@registrations << RegisteredModule.new(name,&block)
				end

				def find_by_key(key)
					@@registrations.each{|t|
						return t if t.key.eql?(key)
					}
					return nil
				end

				def all
					return @@registrations
				end
			end

			extend ClassMethods
			def  self.included(other)
			    other.extend( ClassMethods )
			end

			class RegisteredModule
				attr_reader :name,:key,:module_label,:widget_methods

				def initialize(name,&block)
					@name = name
					@key = @name.underscore.singularize
					@side_bar = nil
					@module_label = @name
					@widget_methods = [] 
					block.arity < 1 ? instance_eval(&block) : block.call(self) if block_given?
					setup_module_app
				end

				def get_module_app
					ModuleApp.find_by(key: @key, title: name) rescue nil
				end

				def setup_module_app
           			module_app = get_module_app
            		module_app = ModuleApp.new(:key=>@key,:title=>name) if module_app.nil?
            		module_app.save(:validate=>false)
          		end

          		%w{data_count module_label category base_url version organization author intro update_info}.each  do |field|
             	 define_method(field){|var| instance_variable_set( "@" + field, var)}
          		end

          		def module_label(name = @name)
					@module_label = name
				end

          		def widget_methods(widgets)
          			@widget_methods = widgets
          		end

          		def get_widget_methods
          			@widget_methods
          		end

          		def get_icon_class
            		@side_bar.get_icon_class
          		end

          		def side_bar(&block) #setter for side_bar from init
            		@side_bar = SideBarRegistration::SideBar.new(@name,@key,method(:get_module_app), &block)
          		end
          		def get_side_bar
          			@side_bar
          		end

          		def icon_class
          			@side_bar.get_icon_class
          		end

			end
		end
	end
end