fab-manager/app/models/product.rb

# frozen_string_literal: true

# Product is a model for the merchandise.
# It holds data of products in the store
class Product < ApplicationRecord
  extend FriendlyId
  friendly_id :name, use: :slugged

  belongs_to :product_category

  has_many :machines_products, dependent: :delete_all
  has_many :machines, through: :machines_products

  has_many :product_files, as: :viewable, dependent: :destroy
  accepts_nested_attributes_for :product_files, allow_destroy: true, reject_if: :all_blank

  has_many :product_images, as: :viewable, dependent: :destroy
  accepts_nested_attributes_for :product_images, allow_destroy: true, reject_if: ->(i) { i[:attachment].blank? && i[:id].blank? }

  has_many :product_stock_movements, dependent: :destroy
  accepts_nested_attributes_for :product_stock_movements, allow_destroy: true, reject_if: :all_blank

  validates :name, :slug, presence: true
  validates :slug, uniqueness: { message: I18n.t('.errors.messages.slug_already_used') }
  validates :amount, numericality: { greater_than_or_equal_to: 0, allow_nil: true }
  validates :amount, exclusion: { in: [nil], message: I18n.t('.errors.messages.undefined_in_store') }, if: -> { is_active }

  scope :active, -> { where(is_active: true) }

  def main_image
    product_images.find_by(is_main: true)
  end
end