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# frozen_string_literal: true
require 'singleton'
class ActivityPub::TagManager
include Singleton
include RoutingHelper
CONTEXT = 'https://www.w3.org/ns/activitystreams'
COLLECTIONS = {
public: 'https://www.w3.org/ns/activitystreams#Public',
}.freeze
def url_for(target)
return target.url if target.respond_to?(:local?) && !target.local?
return unless target.respond_to?(:object_type)
case target.object_type
when :person
target.instance_actor? ? about_more_url(instance_actor: true) : short_account_url(target)
when :note, :comment, :activity
return activity_account_status_url(target.account, target) if target.reblog?
short_account_status_url(target.account, target)
end
end
def uri_for(target)
return target.uri if target.respond_to?(:local?) && !target.local?
case target.object_type
when :person
target.instance_actor? ? instance_actor_url : account_url(target)
when :note, :comment, :activity
return activity_account_status_url(target.account, target) if target.reblog?
account_status_url(target.account, target)
when :emoji
emoji_url(target)
end
end
def uri_for_username(username)
account_url(username: username)
end
def generate_uri_for(_target)
URI.join(root_url, 'payloads', SecureRandom.uuid)
end
def activity_uri_for(target)
raise ArgumentError, 'target must be a local activity' unless %i(note comment activity).include?(target.object_type) && target.local?
activity_account_status_url(target.account, target)
end
def replies_uri_for(target, page_params = nil)
raise ArgumentError, 'target must be a local activity' unless %i(note comment activity).include?(target.object_type) && target.local?
account_status_replies_url(target.account, target, page_params)
end
# Primary audience of a status
# Public statuses go out to primarily the public collection
# Unlisted and private statuses go out primarily to the followers collection
# Others go out only to the people they mention
def to(status, domain)
visibility = status.visibility_for_domain(domain)
case visibility
when 'public', 'unlisted'
[status.tags.present? ? COLLECTIONS[:public] : account_followers_url(status.account)]
else
account_ids = status.active_mentions.pluck(:account_id)
account_ids |= status.account.follower_ids if visibility == 'private'
accounts = status.account.silenced? ? status.account.followers.where(id: account_ids) : Account.where(id: account_ids)
accounts = accounts.where(domain: domain) if domain.present?
accounts.each_with_object([]) do |account, result|
result << uri_for(account)
result << account_followers_url(account) if account.group?
end
end
end
# Secondary audience of a status
# Public statuses go out to followers as well
# Unlisted statuses go to the public as well
# Both of those and private statuses also go to the people mentioned in them
# Direct ones don't have a secondary audience
def cc(status, domain)
cc = []
cc << uri_for(status.reblog.account) if status.reblog?
visibility = status.visibility_for_domain(domain)
case visibility
when 'public', 'unlisted'
cc << (status.tags.present? ? account_followers_url(status.account) : COLLECTIONS[:public])
account_ids = status.active_mentions.pluck(:account_id)
when 'private', 'limited'
# Work around Mastodon visibility heuritic bug by addressing instance actor.
cc << instance_actor_url
account_ids = status.silent_mentions.pluck(:account_id)
else
account_ids = []
end
if account_ids.present?
accounts = status.account.silenced? ? status.account.followers.where(id: account_ids) : Account.where(id: account_ids)
accounts = accounts.where(domain: domain) if domain.present?
cc.concat(accounts.each_with_object([]) do |account, result|
result << uri_for(account)
result << account_followers_url(account) if account.group?
end)
end
cc
end
def local_uri?(uri)
return false if uri.nil?
uri = Addressable::URI.parse(uri)
host = uri.normalized_host
host = "#{host}:#{uri.port}" if uri.port
!host.nil? && (::TagManager.instance.local_domain?(host) || ::TagManager.instance.web_domain?(host))
end
def uri_to_local_id(uri, param = :id)
path_params = Rails.application.routes.recognize_path(uri)
path_params[:username] = Rails.configuration.x.local_domain if path_params[:controller] == 'instance_actors'
path_params[param]
end
def uri_to_resource(uri, klass)
return if uri.nil?
if local_uri?(uri)
case klass.name
when 'Account'
klass.find_local(uri_to_local_id(uri, :username))
else
StatusFinder.new(uri).status
end
elsif OStatus::TagManager.instance.local_id?(uri)
klass.find_by(id: OStatus::TagManager.instance.unique_tag_to_local_id(uri, klass.to_s))
else
klass.find_by(uri: uri.split('#').first)
end
rescue ActiveRecord::RecordNotFound
nil
end
end
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