# frozen_string_literal: true
# == Schema Information
#
# Table name: post_locations
#
#  id             :bigint           not null, primary key
#  id_at_location :integer
#  location       :string
#  created_at     :datetime         not null
#  updated_at     :datetime         not null
#  post_id        :bigint
#
# Indexes
#
#  index_post_locations_on_post_id  (post_id)
#
class Post::Location < ApplicationRecord
  # map of valid location names to their URL prefixes
  #noinspection RubyStringKeysInHashInspection
  LOCATIONS = {
      'derpibooru' => 'https://derpibooru.org/images/',
      'ponybooru' => 'https://ponybooru.org/images/',
      'rainbooru' => 'https://rainbooru.org/img/',
      'ponerpics' => 'https://ponerpics.org/images/',
      'foalcon' => 'https://booru.foalcon.com/post/',
      'lyrabooru' => 'https://lyrabooru.org/post/view/',
      'manebooru' => 'https://manebooru.art/images/'
  }

  # map of other sites' domain names to their location names
  INVERSE_LOCATIONS = {
      'derpibooru.org' => 'derpibooru',
      'trixiebooru.org' => 'derpibooru',

      'ponybooru.org' => 'ponybooru',
      'rainbooru.org' => 'rainbooru',
      'ponerpics.org' => 'ponerpics',
      'booru.foalcon.com' => 'foalcon',
      'lyrabooru.org' => 'lyrabooru',
      'manebooru.art' => 'manebooru'
  }

  belongs_to :post, inverse_of: :locations

  validates :location, inclusion: LOCATIONS.keys
  validates :id_at_location, numericality: true
  validates_uniqueness_of :location, scope: :post_id

  def url_at_location
    LOCATIONS[location] + id_at_location.to_s
  end

  def as_json(*)
    { location: location, id_at_location: id_at_location, url_at_location: url_at_location }
  end
end