class CmAdmin::BulkActionProcessor

def initialize(current_action, model, params)
  @invalid_records = []
  @current_action = current_action
  @model = model
  @params = params
end

def perform_bulk_action
  @params[:selected_ids].split(',').each do |id|
    ar_object = @model.ar_model.find(id)
    column_name = @model.available_fields[:index].first.field_name
    begin
      @current_action.code_block.call(id)
      @error_message = nil
    rescue NoMethodError, NameError => e
      @error_message = "#{e.message.slice(0..(e.message.index(' for')))} at #{ar_object.send(column_name)}"
    rescue ActiveRecord::RecordInvalid => e
      @error_message = "#{e.message} at #{ar_object.send(column_name)}"
    rescue StandardError => e
      @error_message = "#{ar_object.send(column_name)} - #{e.message}"
    end
    @invalid_records << OpenStruct.new({ row_identifier: ar_object.send(column_name), error_message: @error_message }) if @error_message
  end
  self
end