moonleerecords/moonlee-website

class ExternalLink < ApplicationRecord
  default_scope { order('position ASC') }

  ALLOWED_URL_TYPES = {
    website: 1,
    facebook: 2,
    twitter: 3,
    instagram: 4,
    bandcamp: 5,
    spotify: 6,
    deezer: 20,
    google_music: 8,
    soundcloud: 9,
    lastfm: 10,
    discogs: 11,
    apple_music: 12,
    tidal: 21,
    youtube_music: 22
  }.stringify_keys.freeze

  belongs_to :linkable, polymorphic: true

  validates :url, presence: true
  validates :url_type, inclusion: { in: ALLOWED_URL_TYPES.keys }, presence: true

  before_save :assign_position

  def self.allowed_url_types
    ALLOWED_URL_TYPES.sort_by { |k, v| v }.to_h.keys
  end

  private

  def assign_position
    self.position = ALLOWED_URL_TYPES[url_type]
  end
end