tabletop-companion/app/models/stat.rb

# frozen_string_literal: true

class Stat < ApplicationRecord
  belongs_to :character_sheet_section

  validates :name, presence: true,
                   length: { maximum: 100 },
                   uniqueness: { scope: :character_sheet_section_id }
  validates :slug, presence: true,
                   length: { maximum: 100 },
                   uniqueness: true
  validates :value, presence: true,
                    numericality: true
  validate :validate_roll_command

  before_validation :set_slug

  def roll
    DiceRoller.new(roll_command, stat: self).roll
  end

  private

    def validate_roll_command
      return if roll_command.blank?

      DiceRoller.new(roll_command).valid?
    end

    def set_slug
      return if slug.present? || name.blank?

      slug = if character_sheet_section.parent_section.present?
        [
          character_sheet_section.parent_section.name.parameterize,
          name.parameterize,
        ].join("-")
      else
        slug = name.parameterize
      end

      suffix = 2
      while Stat.exists?(slug:)
        slug = "#{slug}-#{suffix}"
        suffix += 1
      end

      self.slug = slug
    end
end