- # frozen_string_literal: true
-
- class ActivityPub::FetchRemoteStatusService < BaseService
- include JsonLdHelper
-
- # Should be called when uri has already been checked for locality
- def call(uri, id: true, prefetched_body: nil, on_behalf_of: nil)
- @json = begin
- if prefetched_body.nil?
- fetch_resource(uri, id, on_behalf_of)
- else
- body_to_json(prefetched_body, compare_id: id ? uri : nil)
- end
- end
-
- return if !(supported_context? && expected_type?) || actor_id.nil? || !trustworthy_attribution?(@json['id'], actor_id)
-
- actor = ActivityPub::TagManager.instance.uri_to_resource(actor_id, Account)
- actor = ActivityPub::FetchRemoteAccountService.new.call(actor_id, id: true) if actor.nil? || needs_update?(actor)
-
- return if actor.nil? || actor.suspended?
-
- ActivityPub::Activity.factory(activity_json, actor).perform
- end
-
- private
-
- def activity_json
- { 'type' => 'Create', 'actor' => actor_id, 'object' => @json }
- end
-
- def actor_id
- value_or_id(first_of_value(@json['attributedTo']))
- end
-
- def trustworthy_attribution?(uri, attributed_to)
- return false if uri.nil? || attributed_to.nil?
- Addressable::URI.parse(uri).normalized_host.casecmp(Addressable::URI.parse(attributed_to).normalized_host).zero?
- end
-
- def supported_context?
- super(@json)
- end
-
- def expected_type?
- equals_or_includes_any?(@json['type'], ActivityPub::Activity::Create::SUPPORTED_TYPES + ActivityPub::Activity::Create::CONVERTED_TYPES)
- end
-
- def needs_update?(actor)
- actor.possibly_stale?
- end
- end
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