Add initial support for ingesting and verifying remote quote posts (#34370)

app/models/concerns/status/snapshot_concern.rb

@@ -25,6 +25,7 @@ module Status::SnapshotConcern
       poll_options: preloadable_poll&.options&.dup,
       account_id: account_id || self.account_id,
       created_at: at_time || edited_at,
+      quote_id: quote&.id,
       rate_limit: rate_limit
     )
   end

app/models/quote.rb

@@ -0,0 +1,67 @@
+# frozen_string_literal: true
+
+# == Schema Information
+#
+# Table name: quotes
+#
+#  id                :bigint(8)        not null, primary key
+#  activity_uri      :string
+#  approval_uri      :string
+#  state             :integer          default("pending"), not null
+#  created_at        :datetime         not null
+#  updated_at        :datetime         not null
+#  account_id        :bigint(8)        not null
+#  quoted_account_id :bigint(8)
+#  quoted_status_id  :bigint(8)
+#  status_id         :bigint(8)        not null
+#
+class Quote < ApplicationRecord
+  BACKGROUND_REFRESH_INTERVAL = 1.week.freeze
+  REFRESH_DEADLINE = 6.hours
+
+  enum :state,
+       { pending: 0, accepted: 1, rejected: 2, revoked: 3 },
+       validate: true
+
+  belongs_to :status
+  belongs_to :quoted_status, class_name: 'Status', optional: true
+
+  belongs_to :account
+  belongs_to :quoted_account, class_name: 'Account', optional: true
+
+  before_validation :set_accounts
+
+  validates :activity_uri, presence: true, if: -> { account.local? && quoted_account&.remote? }
+  validate :validate_visibility
+
+  def accept!
+    update!(state: :accepted)
+  end
+
+  def reject!
+    if accepted?
+      update!(state: :revoked)
+    elsif !revoked?
+      update!(state: :rejected)
+    end
+  end
+
+  def schedule_refresh_if_stale!
+    return unless quoted_status_id.present? && approval_uri.present? && updated_at <= BACKGROUND_REFRESH_INTERVAL.ago
+
+    ActivityPub::QuoteRefreshWorker.perform_in(rand(REFRESH_DEADLINE), id)
+  end
+
+  private
+
+  def set_accounts
+    self.account = status.account
+    self.quoted_account = quoted_status&.account
+  end
+
+  def validate_visibility
+    return if account_id == quoted_account_id || quoted_status.nil? || quoted_status.distributable?
+
+    errors.add(:quoted_status_id, :visibility_mismatch)
+  end
+end

app/models/status.rb

@@ -93,6 +93,7 @@ class Status < ApplicationRecord
   has_one :status_stat, inverse_of: :status, dependent: nil
   has_one :poll, inverse_of: :status, dependent: :destroy
   has_one :trend, class_name: 'StatusTrend', inverse_of: :status, dependent: nil
+  has_one :quote, inverse_of: :status, dependent: :destroy
 
   validates :uri, uniqueness: true, presence: true, unless: :local?
   validates :text, presence: true, unless: -> { with_media? || reblog? }
@@ -154,16 +155,18 @@ class Status < ApplicationRecord
                    :status_stat,
                    :tags,
                    :preloadable_poll,
+                   quote: { status: { account: [:account_stat, user: :role] } },
                    preview_cards_status: { preview_card: { author_account: [:account_stat, user: :role] } },
                    account: [:account_stat, user: :role],
                    active_mentions: :account,
                    reblog: [
                      :application,
-                     :tags,
                      :media_attachments,
                      :conversation,
                      :status_stat,
+                     :tags,
                      :preloadable_poll,
+                     quote: { status: { account: [:account_stat, user: :role] } },
                      preview_cards_status: { preview_card: { author_account: [:account_stat, user: :role] } },
                      account: [:account_stat, user: :role],
                      active_mentions: :account,

app/models/status_edit.rb

@@ -15,6 +15,7 @@
 #  media_descriptions           :text             is an Array
 #  poll_options                 :string           is an Array
 #  sensitive                    :boolean
+#  quote_id                     :bigint(8)
 #
 
 class StatusEdit < ApplicationRecord