class Run < ApplicationRecord
  belongs_to :game
  belongs_to :user
  has_many :checkpoints, dependent: :destroy

  validates :title, presence: true

  after_create :checkout_to_creator

  def checked_in?
    checkpoints.where.not(kind: :comment).last.checkin?
  end

  def checked_out_user
    last_checkpoint = checkpoints.where.not(kind: :comment).last
    last_checkpoint.checkout? ? last_checkpoint.user : nil
  end

  def last_save_file
    checkpoints.except(save_file: nil).last&.save_file
  end

private

  def checkout_to_creator
    checkpoints.create(user:, kind: :checkout)
  end
end