fairmondo/fairmondo

#   Copyright (c) 2012-2017, Fairmondo eG.  This file is
#   licensed under the GNU Affero General Public License version 3 or later.
#   See the COPYRIGHT file for details.

class Article < ApplicationRecord
  extend Enumerize
  extend FriendlyId
  extend Sanitization

  # Article module concerns
  include ArticleConcerns::Validations
  include ArticleConcerns::ActiveRecordOverwrites
  include ArticleConcerns::Associations
  include ArticleConcerns::Commendation
  include ArticleConcerns::FeesAndDonations
  include ArticleConcerns::Images
  include ArticleConcerns::ExtendedAttributes
  include ArticleConcerns::State
  include ArticleConcerns::Scopes
  include ArticleConcerns::Checks
  include ArticleConcerns::Delegates
  include ArticleConcerns::Commentable

  ############### Friendly_id for beautiful links
  def slug_candidates
    [
      :title,
      [:title, :seller_nickname],
      [:title, :seller_nickname, :created_at]
    ]
  end

  friendly_id :slug_candidates, use: [:slugged, :finders]

  def should_generate_new_friendly_id?
    super && slug == nil && should_get_a_slug?
  end

  ###############################################

  # ATTENTION DO NOT CALL THIS WITHOUT A TRANSACTION (See Cart#buy)
  def buy! value
    self.quantity_available -= value
    if self.quantity_available < 1
      self.remove_from_libraries
      self.buy_out!
    end
    self.save! # validation is performed on the attribute
  end

  def self.edit_as_new article
    new_article = article.amoeba_dup
    new_article.state = 'preview'
    new_article
  end

  amoeba do
    enable
    include_association :fair_trust_questionnaire
    include_association :social_producer_questionnaire
    customize lambda { |original_article, new_article|
      new_article.categories = original_article.categories
      # move images to new article
      original_article.images.each do |image|
        image = new_article.images.build(
          image: image.image,
          is_title: image.is_title,
          external_url: image.external_url) rescue nil
        image.save
      end
      new_article.quantity_available = nil
      # unset slug on templates
      if original_article.is_template? || original_article.save_as_template? # cloned because of template handling
        new_article.slug = nil
      else # cloned because of edit_as_new
        new_article.original_id = original_article.id # will be used in after_create; see observer
      end
    }
  end
end