# -----------------------------------------------------------------------
#  Copyright © 2012 ShepHertz Technologies Pvt Ltd. All rights reserved.
# -----------------------------------------------------------------------

require 'json/pure'
require 'App42ResponseBuilder.rb'
require 'shopping/Catalogue.rb'

module App42
  module Shopping

    #
    #
    # CatalogueResponseBuilder class converts the JSON response retrieved from the
    # server to the value object i.e Catalogue
    #
    #
    class CatalogueResponseBuilder < App42ResponseBuilder

      #
      # Converts the response in JSON format to the value object i.e Catalogue
      #
      # @param json
      #      - response in JSON format
      #
      # @return Catalogue object filled with json data
      #
      #
      def buildResponse(json)
        puts "testing #{json}"
        cataloguesJSONObject = getServiceJSONObject("catalogues", json);

        catalogueJSONObject = cataloguesJSONObject.fetch("catalogue")
        catalogue = buildCatalogueObject(catalogueJSONObject);

        catalogue.strResponse=json
        catalogue.isResponseSuccess = isResponseSuccess(json)

        return catalogue
      end

      #
      # Converts the response in JSON format to the list of value objects i.e
      # Catalogue
      #
      # @param response
      #      - response in JSON format
      #
      # @return List of Catalogue object filled with json data
      #
      #

      def buildArrayResponse(json)
        cataloguesJSONObject = getServiceJSONObject("catalogues", json);
        catalogueList = Array.new

        if cataloguesJSONObject["catalogue"].instance_of?(Array)
          catalogueJSONArray = cataloguesJSONObject.fetch("catalogue");
          catalogueJSONArray.length.times do |i|
            catalogueJSONObj = catalogueJSONArray[i]
            #          catalogue = Catalogue.new
            catalogue = buildCatalogueObject(catalogueJSONObj);
            catalogue.strResponse=json
            catalogue.isResponseSuccess = isResponseSuccess(json)
            catalogueList.push(catalogue)
          end
        else
          catalogueJSONObj = cataloguesJSONObject["catalogue"]
          catalogue = buildCatalogueObject(catalogueJSONObj);
          catalogue.strResponse=json
          catalogue.isResponseSuccess = isResponseSuccess(json)
          catalogueList.push(catalogue)
        end
        return catalogueList
      end

      #
      # Converts the User JSON object to the value object i.e Catalogue
      #
      # @param catalogueJSONObj
      #      - Catalogue data as JSONObject
      #
      # @return Catalogue object filled with json data
      #

      def buildCatalogueObject(catalogueJSONObj)
        catalogue = Catalogue.new();
        categoryList = Array.new
        catalogue.categoryList = categoryList
        buildObjectFromJSONTree(catalogue, catalogueJSONObj);

        if catalogueJSONObj.key?("categories") && catalogueJSONObj.fetch("categories").key?("category")
          #Fetch Category

          if catalogueJSONObj.fetch("categories").fetch("category").instance_of?(Hash)
            #Single Category

            categoryJSONObj = catalogueJSONObj.fetch("categories").fetch("category");
            catalogueCategory = App42::Shopping::Category.new(catalogue)
            itemList = Array.new
            catalogueCategory.itemList=(itemList)
            buildObjectFromJSONTree(catalogueCategory, categoryJSONObj);

            #Check for Items Now
            if(categoryJSONObj.key?("items") && categoryJSONObj.fetch("items").key?("item"))

              if categoryJSONObj.fetch("items").fetch("item").instance_of?(Hash)

                #Single Item
                itemJSONObj = categoryJSONObj.fetch("items").fetch("item");
                item = App42::Shopping::Item.new(catalogueCategory)
                buildObjectFromJSONTree(item, itemJSONObj);

              else

                # Multiple Items
                categoryJSONArray = categoryJSONObj.fetch("items").fetch("item");

                categoryJSONArray.length.times do |j|
                  itemJSONObj = categoryJSONArray[j]
                  item = App42::Shopping::Item.new(catalogueCategory)
                  buildObjectFromJSONTree(item, itemJSONObj);
                end
              end
            end

          else
            #Multiple Categories

            itemJSONArray = catalogueJSONObj.fetch("categories").fetch("category");

            itemJSONArray.length.times do |j|
              categoryJSONObj = itemJSONArray(j)
              catalogueCategory = App42::Shopping::Category.new(catalogue)
              buildObjectFromJSONTree(catalogueCategory, categoryJSONObj);

              # Check for Items Now
              if categoryJSONObj.key?("items") && categoryJSONObj.fetch("items").key?("item")

                if categoryJSONObj.fetch("items").fetch("item").instance_of?(Hash)

                  #Single Item
                  itemJSONObj = categoryJSONObj.fetch("items").fetch("item");
                  item = App42::Shopping::Item.new(catalogueCategory)
                  itemList = Array.new
                  catalogueCategory.itemList=(itemList)
                  buildObjectFromJSONTree(item, itemJSONObj);

                else

                  #Multiple Items
                  categoryJSONArray = categoryJSONObj.fetch("items").fetch("item");
                  categoryJSONArray.length.times do |j|
                    itemJSONObj = categoryJSONArray(j)
                    item = App42::Shopping::Item.new(catalogueCategory)
                    buildObjectFromJSONTree(item, itemJSONObj);
                  end

                end
              end
            end
          end
        end

        return catalogue;
      end

    end
  end
end