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# frozen_string_literal: true
class UnfollowService < BaseService
# Unfollow and notify the remote user
# @param [Account] source_account Where to unfollow from
# @param [Account] target_account Which to unfollow
def call(source_account, target_account)
@source_account = source_account
@target_account = target_account
unfollow! || undo_follow_request!
end
private
def unfollow!
follow = Follow.find_by(account: @source_account, target_account: @target_account)
return unless follow
follow.destroy!
create_notification(follow) unless @target_account.local?
create_reject_notification(follow) if @target_account.local? && !@source_account.local?
UnmergeWorker.perform_async(@target_account.id, @source_account.id)
follow
end
def undo_follow_request!
follow_request = FollowRequest.find_by(account: @source_account, target_account: @target_account)
return unless follow_request
follow_request.destroy!
create_notification(follow_request) unless @target_account.local?
follow_request
end
def create_notification(follow)
if follow.target_account.ostatus?
NotificationWorker.perform_async(build_xml(follow), follow.account_id, follow.target_account_id)
elsif follow.target_account.activitypub?
ActivityPub::DeliveryWorker.perform_async(build_json(follow), follow.account_id, follow.target_account.inbox_url)
end
end
def create_reject_notification(follow)
# Rejecting an already-existing follow request
return unless follow.account.activitypub?
ActivityPub::DeliveryWorker.perform_async(build_reject_json(follow), follow.target_account_id, follow.account.inbox_url)
end
def build_json(follow)
ActiveModelSerializers::SerializableResource.new(
follow,
serializer: ActivityPub::UndoFollowSerializer,
adapter: ActivityPub::Adapter
).to_json
end
def build_reject_json(follow)
ActiveModelSerializers::SerializableResource.new(
follow,
serializer: ActivityPub::RejectFollowSerializer,
adapter: ActivityPub::Adapter
).to_json
end
def build_xml(follow)
OStatus::AtomSerializer.render(OStatus::AtomSerializer.new.unfollow_salmon(follow))
end
end
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