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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, :media_attachments, :tags, active_mentions: :account, reblog: [:account, :application, :media_attachments, :tags, active_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 :browserable, ->(exclude_types = []) {
  36. types = TYPE_CLASS_MAP.values - activity_types_from_types(exclude_types + [:follow_request])
  37. where(activity_type: types)
  38. }
  39. cache_associated :from_account, status: STATUS_INCLUDES, mention: [status: STATUS_INCLUDES], favourite: [:account, status: STATUS_INCLUDES], follow: :account
  40. def type
  41. @type ||= TYPE_CLASS_MAP.invert[activity_type].to_sym
  42. end
  43. def target_status
  44. case type
  45. when :reblog
  46. status&.reblog
  47. when :favourite
  48. favourite&.status
  49. when :mention
  50. mention&.status
  51. end
  52. end
  53. def browserable?
  54. type != :follow_request
  55. end
  56. class << self
  57. def cache_ids
  58. select(:id, :updated_at, :activity_type, :activity_id)
  59. end
  60. def reload_stale_associations!(cached_items)
  61. account_ids = (cached_items.map(&:from_account_id) + cached_items.map { |item| item.target_status&.account_id }.compact).uniq
  62. return if account_ids.empty?
  63. accounts = Account.where(id: account_ids).map { |a| [a.id, a] }.to_h
  64. cached_items.each do |item|
  65. item.from_account = accounts[item.from_account_id]
  66. item.target_status.account = accounts[item.target_status.account_id] if item.target_status
  67. end
  68. end
  69. def activity_types_from_types(types)
  70. types.map { |type| TYPE_CLASS_MAP[type.to_sym] }.compact
  71. end
  72. end
  73. after_initialize :set_from_account
  74. before_validation :set_from_account
  75. private
  76. def set_from_account
  77. return unless new_record?
  78. case activity_type
  79. when 'Status', 'Follow', 'Favourite', 'FollowRequest'
  80. self.from_account_id = activity&.account_id
  81. when 'Mention'
  82. self.from_account_id = activity&.status&.account_id
  83. end
  84. end
  85. end