# frozen_string_literal: true

require "active_support/concern"

module Revertable
  extend ActiveSupport::Concern

  def revert!
    undo_all

    import.reverted!
  rescue => e
    import.result_message = "Exception: #{e.message}"
    Rails.logger.error "Importo exception: #{e.message} backtrace #{e.backtrace.join(";")}"
    import.failure!
  end

  private

  def undo_all
    revertable_results = import.results.select { |result| result["state"] == "success" }

    revertable_results.each do |revertable_result|
      next unless revertable_result["state"] == "success"

      begin
        undo(revertable_result["class"], revertable_result["id"], cells_from_row(revertable_result["row"]))
        revertable_result["state"] = "reverted"
        revertable_result.delete("message")
        revertable_result.delete("errors")
      rescue => e
        result["message"] = "Not reverted: #{e.message}"
      end
    end
  end

  def undo_row(klass, id, _row)
    klass.constantize.find(id).destroy
  end
end