require 'active_support'
module Forcast
  module Application
      module Meta

        extend ActiveSupport::Concern

        included do
             
        
        end

        class MetaRelation    
          attr_accessor :class_name
          attr_accessor :belongs_to
          attr_accessor :has_many

          def initialize(e)
            self.class_name = e.to_s
            self.belongs_to = e.reflect_on_all_associations(:belongs_to).map { |e| e.name.to_s }
            self.has_many = e.reflect_on_all_associations(:has_many).map { |e| e.name.to_s }
            #e.includes(self.belongs_to + self.has_many)
          end

          def has_relation(model)
            rel = Hash.new
            rel[:has_relation] = {}
            rel[:has_relation][:belongs_to] = []
            rel[:has_relation][:has_many] = []
            self.belongs_to.each do |relation|
              object = model.send(relation)
              unless object.blank?
                sender = [object].map {|e| e}
                #object.is_a?(Array) ? sender = object.map {|e| e.as_json["id"]} : sender = [object].map {|e| e.as_json["id"]}
                rel[:has_relation][:belongs_to].push({related_to: relation.to_s.pluralize, label: relation.to_s.pluralize.capitalize, ids: sender})
              end
            end
            self.has_many.each do |relation|
              object = model.send(relation)
              ##Return 'Array' Coleection Proxy
              unless object.blank?
                sender = object.map {|e| e}
                #object.is_a?(Array) ? sender = object.map {|e| e.as_json["id"]} : sender = [object].map {|e| e.as_json["id"]}
                rel[:has_relation][:has_many].push({related_to: relation.to_s.pluralize, label: relation.to_s.pluralize.capitalize, ids: sender})
              end
            end
            return rel
          end

          def egear_load(model)
            model.includes(self.belongs_to + self.has_many)
          end   

          # def meta_child(model)
          #   {hasChild:  [{ relatedTo: "plants", childResource: "edificio"}]}
          # end   

        end
      end
  end
end