eBooru/app/models/help_page.rb

# frozen_string_literal: true

class HelpPage < ApplicationRecord
  validates :wiki_page, :name, uniqueness: true
  validates :wiki_page, :name, presence: true
  normalizes :name, with: ->(name) { name.downcase.strip.tr(" ", "_") }
  validate :wiki_page_exists
  after_create :log_create
  after_update :log_update
  after_destroy :invalidate_cache
  after_destroy :log_destroy
  after_save :invalidate_cache
  belongs_to :wiki, class_name: "WikiPage", foreign_key: "wiki_page", primary_key: "title"

  def invalidate_cache
    Cache.delete("help_index")
    true
  end

  def wiki_page_exists
    errors.add(:wiki_page, "must exist") if wiki.blank?
  end

  def pretty_title
    title.presence || name.titleize
  end

  def related_array
    related.split(",").map(&:strip)
  end

  def self.pretty_related_title(related, help_pages)
    related_help_page = help_pages.find { |help_page| help_page.name == related }

    return related_help_page.pretty_title if related_help_page

    related.titleize
  end

  def self.help_index
    Cache.fetch("help_index", expires_in: 12.hours) { HelpPage.all.sort_by(&:pretty_title) }
  end

  module LogMethods
    def log_create
      ModAction.log(:help_create, { name: name, wiki_page: wiki_page })
    end

    def log_update
      ModAction.log(:help_update, { name: name, wiki_page: wiki_page })
    end

    def log_destroy
      ModAction.log(:help_delete, { name: name, wiki_page: wiki_page })
    end
  end

  include LogMethods
end