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|
# frozen_string_literal: true
class DeleteAccountService < BaseService
include Payloadable
ASSOCIATIONS_ON_SUSPEND = %w(
account_pins
active_relationships
block_relationships
blocked_by_relationships
conversation_mutes
conversations
custom_filters
domain_blocks
favourites
follow_requests
list_accounts
mute_relationships
muted_by_relationships
notifications
owned_lists
passive_relationships
report_notes
scheduled_statuses
status_pins
).freeze
ASSOCIATIONS_ON_DESTROY = %w(
reports
targeted_moderation_notes
targeted_reports
).freeze
# Suspend or remove an account and remove as much of its data
# as possible. If it's a local account and it has not been confirmed
# or never been approved, then side effects are skipped and both
# the user and account records are removed fully. Otherwise,
# it is controlled by options.
# @param [Account]
# @param [Hash] options
# @option [Boolean] :reserve_email Keep user record. Only applicable for local accounts
# @option [Boolean] :reserve_username Keep account record
# @option [Boolean] :skip_side_effects Side effects are ActivityPub and streaming API payloads
# @option [Boolean] :skip_activitypub Skip sending ActivityPub payloads. Implied by :skip_side_effects
# @option [Time] :suspended_at Only applicable when :reserve_username is true
def call(account, **options)
@account = account
@options = { reserve_username: true, reserve_email: true }.merge(options)
if @account.local? && @account.user_unconfirmed_or_pending?
@options[:reserve_email] = false
@options[:reserve_username] = false
@options[:skip_side_effects] = true
end
@options[:skip_activitypub] = true if @options[:skip_side_effects]
reject_follows!
undo_follows!
purge_user!
purge_profile!
purge_content!
fulfill_deletion_request!
end
private
def reject_follows!
return if @account.local? || !@account.activitypub? || @options[:skip_activitypub]
# When deleting a remote account, the account obviously doesn't
# actually become deleted on its origin server, i.e. unlike a
# locally deleted account it continues to have access to its home
# feed and other content. To prevent it from being able to continue
# to access toots it would receive because it follows local accounts,
# we have to force it to unfollow them.
ActivityPub::DeliveryWorker.push_bulk(Follow.where(account: @account)) do |follow|
[Oj.dump(serialize_payload(follow, ActivityPub::RejectFollowSerializer)), follow.target_account_id, @account.inbox_url]
end
end
def undo_follows!
return if @account.local? || !@account.activitypub? || @options[:skip_activitypub]
# When deleting a remote account, the account obviously doesn't
# actually become deleted on its origin server, but following relationships
# are severed on our end. Therefore, make the remote server aware that the
# follow relationships are severed to avoid confusion and potential issues
# if the remote account gets un-suspended.
ActivityPub::DeliveryWorker.push_bulk(Follow.where(target_account: @account)) do |follow|
[Oj.dump(serialize_payload(follow, ActivityPub::UndoFollowSerializer)), follow.account_id, @account.inbox_url]
end
end
def purge_user!
return if !@account.local? || @account.user.nil?
if @options[:reserve_email]
@account.user.disable!
@account.user.invites.where(uses: 0).destroy_all
else
@account.user.destroy
end
end
def purge_content!
distribute_delete_actor! if @account.local? && !@options[:skip_side_effects]
@account.statuses.reorder(nil).find_in_batches do |statuses|
statuses.reject! { |status| reported_status_ids.include?(status.id) } if @options[:reserve_username]
BatchedRemoveStatusService.new.call(statuses, skip_side_effects: @options[:skip_side_effects])
end
@account.media_attachments.reorder(nil).find_each do |media_attachment|
next if @options[:reserve_username] && reported_status_ids.include?(media_attachment.status_id)
media_attachment.destroy
end
@account.polls.reorder(nil).find_each do |poll|
next if @options[:reserve_username] && reported_status_ids.include?(poll.status_id)
# We can safely delete the poll rather than destroy it, as any non-reported
# status should have been deleted already
poll.delete
end
associations_for_destruction.each do |association_name|
destroy_all(@account.public_send(association_name))
end
@account.destroy unless @options[:reserve_username]
end
def purge_profile!
# If the account is going to be destroyed
# there is no point wasting time updating
# its values first
return unless @options[:reserve_username]
@account.silenced_at = nil
@account.suspended_at = @options[:suspended_at] || Time.now.utc
@account.suspension_origin = :local
@account.locked = false
@account.memorial = false
@account.discoverable = false
@account.display_name = ''
@account.note = ''
@account.fields = []
@account.statuses_count = 0
@account.followers_count = 0
@account.following_count = 0
@account.moved_to_account = nil
@account.trust_level = :untrusted
@account.avatar.destroy
@account.header.destroy
@account.save!
end
def fulfill_deletion_request!
@account.deletion_request&.destroy
end
def destroy_all(association)
association.in_batches.destroy_all
end
def distribute_delete_actor!
ActivityPub::DeliveryWorker.push_bulk(delivery_inboxes) do |inbox_url|
[delete_actor_json, @account.id, inbox_url]
end
ActivityPub::LowPriorityDeliveryWorker.push_bulk(low_priority_delivery_inboxes) do |inbox_url|
[delete_actor_json, @account.id, inbox_url]
end
end
def delete_actor_json
@delete_actor_json ||= Oj.dump(serialize_payload(@account, ActivityPub::DeleteActorSerializer, signer: @account))
end
def delivery_inboxes
@delivery_inboxes ||= @account.followers.inboxes + Relay.enabled.pluck(:inbox_url)
end
def low_priority_delivery_inboxes
Account.inboxes - delivery_inboxes
end
def reported_status_ids
@reported_status_ids ||= Report.where(target_account: @account).unresolved.pluck(:status_ids).flatten.uniq
end
def associations_for_destruction
if @options[:reserve_username]
ASSOCIATIONS_ON_SUSPEND
else
ASSOCIATIONS_ON_SUSPEND + ASSOCIATIONS_ON_DESTROY
end
end
end
|
