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# frozen_string_literal: true
class ActivityPub::FetchRemoteStatusService < BaseService
include JsonLdHelper
# Should be called when uri has already been checked for locality
def call(uri, prefetched_json = nil)
@json = body_to_json(prefetched_json) || fetch_resource(uri)
return unless supported_context?
activity = activity_json
actor_id = value_or_id(activity['actor'])
return unless expected_type?(activity) && trustworthy_attribution?(uri, actor_id)
actor = ActivityPub::TagManager.instance.uri_to_resource(actor_id, Account)
actor = ActivityPub::FetchRemoteAccountService.new.call(actor_id) if actor.nil?
return if actor.suspended?
ActivityPub::Activity.factory(activity, actor).perform
end
private
def activity_json
if %w(Note Article).include? @json['type']
{
'type' => 'Create',
'actor' => first_of_value(@json['attributedTo']),
'object' => @json,
}
else
@json
end
end
def trustworthy_attribution?(uri, attributed_to)
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?(json)
%w(Create Announce).include? json['type']
end
end
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