module OrbitApp
    module Module
      module WidgetUtility
          Version = "0.2"

          module ClassMethods
            @@widgets = {}

          def add(name,default_widget,customize_widget)
            @@widgets[name] =  {:default_widget=>default_widget,:customize_widget=>customize_widget}
            Hash[@@widgets.sort]
          end

          def all
            return @@widgets
          end
        end
      
        extend ClassMethods
        def self.included( other )
          other.extend( ClassMethods )
        end

        class WidgetSet
          attr_reader :widgets,:categories_query,:tags_query
          def initialize(name,key,&block)
            @widgets = []
            @default_widget = nil
            @widget_title_enabled = true
            @column_title_enabled = false
            @categories_query = ''
            @tags_query = ''
            block.arity < 1 ? instance_eval(&block) : block.call(self) if block_given?
            OrbitApp::Module::WidgetUtility.add(key,@default_widget,@widgets)
          end

          %w{categories_query tags_query}.each  do |field|
              define_method(field){|var| instance_variable_set( "@" + field, var)}
          end

          # def data_count(var)
          #   @data_count = var
          # end

          def find_by_path(path)
            @widgets.each do |widget|
              return widget if widget.name == path
            end
          end

          def get_categories
             eval(@categories_query) rescue nil
          end

          def get_tags
            eval(@tags_query) rescue nil
          end

          def default_widget_setting
            @default_widget
          end

          def default_widget(&block)
            @default_widget  = DefaultWidget.new(&block)
            # OrbitApp::Module::FrontendUtility.add()
          end

          def customize_widget(name,&block)
            @widgets << Widget.new(name,&block)
          end 

          # def customize_widget(name,label,options ={})
          #   @widgets << Widget.new(name,label,options)
          # end

          # def customize_widget_options_fields_i18n(settings)
          #   @customize_widget_options_fields_i18n = settings
          # end

          def to_module_app_format
            hash = {}
            @widgets.collect{|t|  hash[t.name] = t.to_hash}
            hash["default_widget"]= DefaultWidget.get_interface_args unless @default_widget.blank?
            hash
          end

          def get_fields
            get_default_widget.get_fields
          end

          def get_link_methods
            get_default_widget.get_link_methods
          end

          def get_default_widget
            return @default_widget
          end
        end

        class DefaultWidget
          include DefaultWidgetTagHelper
          STYLE = ["typeA","typeB_style2","typeB_style3","typeB_style4","typeC"]

          def  initialize(&block)
            @query = nil
            @widget_title_enabled = true
            @column_title_enabled = false
            @image = nil
            @more_link = {}
            @fields = []
            @enabled_styles = STYLE
             block.arity < 1 ? instance_eval(&block) : block.call(self) if block_given?
          end

          def enable(args)
            @enabled_styles = args
          end

          def link_to_more(*args)
            @more_link[:label_i18n] = (args[1] ?  args[1][:title_i18n] : 'default_widget.default_link_to_more' )
            @more_link[:path_method] = args[0]
          end

          def self.get_interface_args
            {:name=>"default_widget",:field=>@fields,:style=>@enabled_styles,:i18n=>'default_widget.default_widget'}
          end

          def to_module_app_format
            {"query"=>@query,"image"=>@image,"more_link"=>@more_link,"enabled_styles"=>@enabled_styles,"widget_title_enabled"=>@widget_title_enabled, "column_title_enabled"=>@column_title_enabled} rescue nil
          end

          def link_field(field_name,setting)
            @fields << [field_name,setting,:link]
          end

          def field(field_name)
            @fields << [field_name,nil,:field]
          end

          def get_fields
            @fields
          end

          def get_link_methods
            return flatten_hashes(@fields.select{|t| t[2]==:link}.map{|t| Hash[t[0].to_sym,t[1]] })
          end

          def query(var)
            @query = var
          end

          def widget_title_enabled(var)
            @widget_title_enabled = var
          end

          def column_title_enabled(var)
            @column_title_enabled = var
          end

          def image(var)
            @image = var
          end

          def flatten_hashes(ary)
            Hash[*ary.map(&:to_a).flatten]
          end

        end

        class Widget
          attr_reader :name,:default_template,:fields

          def initialize(name,&block)
            @name = name
            @options  = {}
            block.arity < 1 ? instance_eval(&block) : block.call(self) if block_given?
            
            # @fields = options[:fields] 
            # @label = label
            # @style= options[:style]
          end
          
          def widget_i18n(str) # "gallery.widget.widget1"
            @widget_i18n = str
          end          

          def style(ary)# []
            @style = ary
          end
          
          def get_options
            @options
          end

          def options(opt_name,*options) # "vertical",
            option = options[0]
            @options[opt_name] = {:label_i18n=>option[:i18n] , :opts=>option[:options_item]}
            # options =>   :i18n => "gallery.widget_option.vertical",:options_item=>[1, 2]
            #                        :i18n =>"gallery.album",:options_item => {"query"=>"GalleryAlbum.all", "value"=>:id, "label"=>:name}
          end


          def to_hash
              {:name => @name,:fields=>@fields,:style=>@style,:i18n=>@widget_i18n}
          end

          protected
          
        end# of widget
    end # of WidgetRegisition
  end # of Module
end # of OrbitApp