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

app/serializers/rest/base_quote_serializer.rb

@@ -0,0 +1,25 @@
+# frozen_string_literal: true
+
+class REST::BaseQuoteSerializer < ActiveModel::Serializer
+  attributes :state
+
+  def state
+    return object.state unless object.accepted?
+
+    # Extra states when a status is unavailable
+    return 'deleted' if object.quoted_status.nil?
+    return 'unauthorized' if status_filter.filtered?
+
+    object.state
+  end
+
+  def quoted_status
+    object.quoted_status if object.accepted? && object.quoted_status.present? && !status_filter.filtered?
+  end
+
+  private
+
+  def status_filter
+    @status_filter ||= StatusFilter.new(object.quoted_status, current_user&.account, instance_options[:relationships] || {})
+  end
+end

app/serializers/rest/quote_serializer.rb

@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+
+class REST::QuoteSerializer < REST::BaseQuoteSerializer
+  has_one :quoted_status, serializer: REST::ShallowStatusSerializer
+end

app/serializers/rest/shallow_quote_serializer.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class REST::ShallowQuoteSerializer < REST::BaseQuoteSerializer
+  attribute :quoted_status_id
+
+  def quoted_status_id
+    quoted_status&.id&.to_s
+  end
+end

app/serializers/rest/shallow_status_serializer.rb

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+class REST::ShallowStatusSerializer < REST::StatusSerializer
+  has_one :quote, key: :quote, serializer: REST::ShallowQuoteSerializer
+
+  # It looks like redefining one `has_one` requires redefining all inherited ones
+  has_one :preview_card, key: :card, serializer: REST::PreviewCardSerializer
+  has_one :preloadable_poll, key: :poll, serializer: REST::PollSerializer
+end

app/serializers/rest/status_edit_serializer.rb

@@ -10,6 +10,8 @@ class REST::StatusEditSerializer < ActiveModel::Serializer
   has_many :ordered_media_attachments, key: :media_attachments, serializer: REST::MediaAttachmentSerializer
   has_many :emojis, serializer: REST::CustomEmojiSerializer
 
+  has_one :quote, serializer: REST::QuoteSerializer, if: -> { object.quote_id.present? }
+
   attribute :poll, if: -> { object.poll_options.present? }
 
   def content
@@ -19,4 +21,8 @@ class REST::StatusEditSerializer < ActiveModel::Serializer
   def poll
     { options: object.poll_options.map { |title| { title: title } } }
   end
+
+  def quote
+    object.quote_id == status.quote&.id ? status.quote : Quote.new(state: :pending)
+  end
 end

app/serializers/rest/status_serializer.rb

@@ -29,6 +29,7 @@ class REST::StatusSerializer < ActiveModel::Serializer
   has_many :tags
   has_many :emojis, serializer: REST::CustomEmojiSerializer
 
+  has_one :quote, key: :quote, serializer: REST::QuoteSerializer
   has_one :preview_card, key: :card, serializer: REST::PreviewCardSerializer
   has_one :preloadable_poll, key: :poll, serializer: REST::PollSerializer