class BaseExportJob < BackgroundJobWithProgress
  START_PROGRESS = 5
  END_PROGRESS = 100
  
  @queue = :backgroud_export

  def perform
    start_export
    data = export_data
    file_url = create_and_upload_file(data)
    end_export

    completed('file_url' => file_url)
  end

  def start_export
    initialize_data
    initialize_steps

    @progress = START_PROGRESS
    set_progress_status
  end

  def end_export
    @progress = END_PROGRESS
    set_progress_status
  end

  def initialize_data
    @organization = Organization.find(options['organization'])

    initialize_additional_data if defined?(initialize_additional_data)

    @items_to_export = get_items_to_export
  end

  def initialize_steps
    total = @items_to_export.count

    if total == 0
      @progress_per_item = 0
    else
      @progress_per_item = (END_PROGRESS - START_PROGRESS) / total
    end
  end

  def export_data
    items = []

    @items_to_export.each do |item|
      items << item.export
      indicate_progress
      set_progress_status
    end

    data = items.compact.to_json
    set_progress_status

    data
  end

  def create_and_upload_file(data)
    json_file = create_file('json', get_file_name, data)

    # upload the pdf file to S3
    upload_file(json_file)
  end

  def upload_file(file)
    uploader = OrganizationFileUploader.new("#{file}", @organization)
    upload_result = uploader.upload

    upload_result[:file_url]
  end
end