Set and store report URIs (#10303)

Fixes #10271

app/lib/activitypub/activity/flag.rb

@@ -14,7 +14,8 @@ class ActivityPub::Activity::Flag < ActivityPub::Activity
         @account,
         target_account,
         status_ids: target_statuses.nil? ? [] : target_statuses.map(&:id),
-        comment: @json['content'] || ''
+        comment: @json['content'] || '',
+        uri: report_uri
       )
     end
   end
@@ -28,4 +29,8 @@ class ActivityPub::Activity::Flag < ActivityPub::Activity
   def object_uris
     @object_uris ||= Array(@object.is_a?(Array) ? @object.map { |item| value_or_id(item) } : value_or_id(@object))
   end
+
+  def report_uri
+    @json['id'] unless @json['id'].nil? || invalid_origin?(@json['id'])
+  end
 end

app/models/report.rb

@@ -13,6 +13,7 @@
 #  action_taken_by_account_id :bigint(8)
 #  target_account_id          :bigint(8)        not null
 #  assigned_account_id        :bigint(8)
+#  uri                        :string
 #
 
 class Report < ApplicationRecord
@@ -28,6 +29,12 @@ class Report < ApplicationRecord
 
   validates :comment, length: { maximum: 1000 }
 
+  def local?
+    false # Force uri_for to use uri attribute
+  end
+
+  before_validation :set_uri, only: :create
+
   def object_type
     :flag
   end
@@ -89,4 +96,8 @@ class Report < ApplicationRecord
 
     Admin::ActionLog.from("(#{sql}) AS admin_action_logs")
   end
+
+  def set_uri
+    self.uri = ActivityPub::TagManager.instance.generate_uri_for(self) if uri.nil? && account.local?
+  end
 end

app/serializers/activitypub/flag_serializer.rb

@@ -5,7 +5,6 @@ class ActivityPub::FlagSerializer < ActiveModel::Serializer
   attribute :virtual_object, key: :object
 
   def id
-    # This is nil for now
     ActivityPub::TagManager.instance.uri_for(object)
   end
 

app/services/report_service.rb

@@ -21,7 +21,8 @@ class ReportService < BaseService
     @report = @source_account.reports.create!(
       target_account: @target_account,
       status_ids: @status_ids,
-      comment: @comment
+      comment: @comment,
+      uri: @options[:uri]
     )
   end