tabletop-companion/app/models/character_sheet_feature.rb

# frozen_string_literal: true

class CharacterSheetFeature < ApplicationRecord
  belongs_to :character_sheet_section
  belongs_to :featurable, polymorphic: true

  validates :order_index, presence: true,
                    numericality: { only_integer: true, greater_than: 0 },
                    uniqueness: { scope: :character_sheet_section_id }

  validates :slug, presence: true,
    length: { maximum: 100 },
    uniqueness: { scope: :character_sheet_section_id }

  before_validation :set_slug
  before_validation :set_order_index

  def move(to:)
    return if to == order_index

    unless character_sheet_section.character_sheet_features.exists?(order_index: to)
      update!(order_index: to)
      return
    end

    if to < order_index
      character_sheet_section.character_sheet_features.where(order_index: to...order_index)
        .update_all("order_index = order_index + 1")
    else
      character_sheet_section.character_sheet_features.where(order_index: (order_index+1)..to)
        .update_all("order_index = order_index - 1")
    end

    update!(order_index: to)
  end

  private

    def set_order_index
      return if order_index.present?

      if character_sheet_section.character_sheet_features.any?
        self.order_index = character_sheet_section.character_sheet_features.order(:order_index).last.order_index + 1
      else
        self.order_index = 1
      end
    end

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

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

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

      self.slug = slug
    end
end