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

require 'json/pure'
require 'App42_Ruby_API/App42ResponseBuilder'
require 'storage/Storage'
require 'storage/Query'
require 'storage/OrderByType'

module App42
  module Storage
    #
    #
    # StorageResponseBuilder class converts the JSON response retrieved from the
    # server to the value object i.e Storage
    #
    #
    class StorageResponseBuilder < App42ResponseBuilder
      #
      # Converts the response in JSON format to the value object i.e Storage
      #
      # @param json
      #      - response in JSON format
      #
      # @return Storage object filled with json data
      #
      #
      def buildResponse(json)
        storageObj = Storage.new
        jsonDocList = Array.new
        storageObj.jsonDocList = (jsonDocList)
        storageObj.strResponse = (json)
        jsonObj = JSON.parse(json)
        jsonObjApp42 = jsonObj["app42"]
        jsonObjResponse = jsonObjApp42["response"]
        storageObj.isResponseSuccess=(jsonObjResponse.fetch("success"))
        jsonObjStorage = jsonObjResponse.fetch("storage");
        buildObjectFromJSONTree(storageObj, jsonObjStorage);

        if jsonObjStorage.key?("jsonDoc") == false
          return storageObj;
        end

        if jsonObjStorage.fetch("jsonDoc").instance_of?(Hash)
          # Only One attribute is there

          jsonObjDoc = jsonObjStorage.fetch("jsonDoc");
          document = App42::Storage::JSONDocument.new(storageObj)

          buildJsonDocument(document, jsonObjDoc);
        else
          # There is an Array of attribute

          jsonObjDocArray = jsonObjStorage.fetch("jsonDoc")
          jsonObjDocArray.length.times do |i|
            # Get Individual Attribute Node and set it into Object
            jsonObjDoc = jsonObjDocArray[i]
            document = App42::Storage::JSONDocument.new(storageObj)
            buildJsonDocument(document, jsonObjDoc);
          end
        end
        return storageObj
      end

      #
      # Builds the Json Document for the storage w.r.t their docId
      #
      # @param document
      #      - document for storage
      # @param jsonObjDoc
      #      - jsonDoc object for storage
      #

      def buildJsonDocument(document,jsonObjDoc)
        if jsonObjDoc.fetch("_id").instance_of?(Hash)
          idObj = jsonObjDoc.fetch("_id");
          oIdObj = idObj.fetch("$oid")
          document.docId = oIdObj
          jsonObjDoc.delete("_id")
          document.jsonDoc = jsonObjDoc.to_s
        end
      end
    end
  end
end