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  1. # frozen_string_literal: true
  2. # == Schema Information
  3. #
  4. # Table name: notifications
  5. #
  6. # id :bigint(8) not null, primary key
  7. # activity_id :bigint(8) not null
  8. # activity_type :string not null
  9. # created_at :datetime not null
  10. # updated_at :datetime not null
  11. # account_id :bigint(8) not null
  12. # from_account_id :bigint(8) not null
  13. #
  14. class Notification < ApplicationRecord
  15. include Paginable
  16. include Cacheable
  17. TYPE_CLASS_MAP = {
  18. mention: 'Mention',
  19. reblog: 'Status',
  20. follow: 'Follow',
  21. follow_request: 'FollowRequest',
  22. favourite: 'Favourite',
  23. }.freeze
  24. STATUS_INCLUDES = [:account, :application, :stream_entry, :media_attachments, :tags, mentions: :account, reblog: [:stream_entry, :account, :application, :media_attachments, :tags, mentions: :account]].freeze
  25. belongs_to :account, optional: true
  26. belongs_to :from_account, class_name: 'Account', optional: true
  27. belongs_to :activity, polymorphic: true, optional: true
  28. belongs_to :mention, foreign_type: 'Mention', foreign_key: 'activity_id', optional: true
  29. belongs_to :status, foreign_type: 'Status', foreign_key: 'activity_id', optional: true
  30. belongs_to :follow, foreign_type: 'Follow', foreign_key: 'activity_id', optional: true
  31. belongs_to :follow_request, foreign_type: 'FollowRequest', foreign_key: 'activity_id', optional: true
  32. belongs_to :favourite, foreign_type: 'Favourite', foreign_key: 'activity_id', optional: true
  33. validates :account_id, uniqueness: { scope: [:activity_type, :activity_id] }
  34. validates :activity_type, inclusion: { in: TYPE_CLASS_MAP.values }
  35. scope :cache_ids, -> { select(:id, :updated_at, :activity_type, :activity_id) }
  36. scope :browserable, ->(exclude_types = []) {
  37. types = TYPE_CLASS_MAP.values - activity_types_from_types(exclude_types + [:follow_request])
  38. where(activity_type: types)
  39. }
  40. cache_associated :from_account, status: STATUS_INCLUDES, mention: [status: STATUS_INCLUDES], favourite: [:account, status: STATUS_INCLUDES], follow: :account
  41. def type
  42. @type ||= TYPE_CLASS_MAP.invert[activity_type].to_sym
  43. end
  44. def target_status
  45. case type
  46. when :reblog
  47. status&.reblog
  48. when :favourite
  49. favourite&.status
  50. when :mention
  51. mention&.status
  52. end
  53. end
  54. def browserable?
  55. type != :follow_request
  56. end
  57. class << self
  58. def reload_stale_associations!(cached_items)
  59. account_ids = (cached_items.map(&:from_account_id) + cached_items.map { |item| item.target_status&.account_id }.compact).uniq
  60. return if account_ids.empty?
  61. accounts = Account.where(id: account_ids).map { |a| [a.id, a] }.to_h
  62. cached_items.each do |item|
  63. item.from_account = accounts[item.from_account_id]
  64. item.target_status.account = accounts[item.target_status.account_id] if item.target_status
  65. end
  66. end
  67. def activity_types_from_types(types)
  68. types.map { |type| TYPE_CLASS_MAP[type.to_sym] }.compact
  69. end
  70. end
  71. after_initialize :set_from_account
  72. before_validation :set_from_account
  73. private
  74. def set_from_account
  75. return unless new_record?
  76. case activity_type
  77. when 'Status', 'Follow', 'Favourite', 'FollowRequest'
  78. self.from_account_id = activity&.account_id
  79. when 'Mention'
  80. self.from_account_id = activity&.status&.account_id
  81. end
  82. end
  83. end