class FollowService < BaseService # Follow a remote user, notify remote user about the follow # @param [Account] source_account From which to follow # @param [String] uri User URI to follow in the form of username@domain def call(source_account, uri) target_account = follow_remote_account_service.call(uri) return nil if target_account.nil? || target_account.id == source_account.id follow = source_account.follow!(target_account) if target_account.local? NotificationMailer.follow(target_account, source_account).deliver_later unless target_account.blocking?(source_account) else subscribe_service.call(target_account) NotificationWorker.perform_async(follow.stream_entry.id, target_account.id) end merge_into_timeline(target_account, source_account) HubPingWorker.perform_async(source_account.id) follow end private def merge_into_timeline(from_account, into_account) timeline_key = FeedManager.instance.key(:home, into_account.id) from_account.statuses.find_each do |status| redis.zadd(timeline_key, status.id, status.id) end FeedManager.instance.trim(:home, into_account.id) FeedManager.instance.broadcast(into_account.id, type: 'merge') end def redis $redis end def follow_remote_account_service @follow_remote_account_service ||= FollowRemoteAccountService.new end def subscribe_service @subscribe_service ||= SubscribeService.new end end