discourse/app/services/user_destroyer.rb

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require_dependency 'ip_addr'
# Responsible for destroying a User record
class UserDestroyer
class PostsExistError < RuntimeError; end
def initialize(actor)
@actor = actor
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raise Discourse::InvalidParameters.new('acting user is nil') unless @actor && @actor.is_a?(User)
@guardian = Guardian.new(actor)
end
# Returns false if the user failed to be deleted.
# Returns a frozen instance of the User if the delete succeeded.
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def destroy(user, opts = {})
raise Discourse::InvalidParameters.new('user is nil') unless user && user.is_a?(User)
raise PostsExistError if !opts[:delete_posts] && user.posts.count != 0
@guardian.ensure_can_delete_user!(user)
User.transaction do
Draft.where(user_id: user.id).delete_all
QueuedPost.where(user_id: user.id).delete_all
if opts[:delete_posts]
user.posts.each do |post|
# agree with flags
PostAction.agree_flags!(post, @actor) if opts[:delete_as_spammer]
# block all external urls
if opts[:block_urls]
post.topic_links.each do |link|
next if link.internal
next if Oneboxer.engine(link.url) != Onebox::Engine::WhitelistedGenericOnebox
ScreenedUrl.watch(link.url, link.domain, ip_address: user.ip_address)&.record_match!
end
end
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PostDestroyer.new(@actor.staff? ? @actor : Discourse.system_user, post).destroy
if post.topic && post.is_first_post?
Topic.unscoped.where(id: post.topic_id).update_all(user_id: nil)
end
end
end
user.post_actions.each do |post_action|
post_action.remove_act!(Discourse.system_user)
end
# keep track of emails used
user_emails = user.user_emails.pluck(:email)
user.destroy.tap do |u|
if u
if opts[:block_email]
user_emails.each do |email|
ScreenedEmail.block(email, ip_address: u.ip_address)&.record_match!
end
end
if opts[:block_ip] && u.ip_address
ScreenedIpAddress.watch(u.ip_address)&.record_match!
if u.registration_ip_address && u.ip_address != u.registration_ip_address
ScreenedIpAddress.watch(u.registration_ip_address)&.record_match!
end
end
Post.unscoped.where(user_id: u.id).update_all(user_id: nil)
# If this user created categories, fix those up:
Category.where(user_id: u.id).each do |c|
c.user_id = Discourse::SYSTEM_USER_ID
c.save!
if topic = Topic.unscoped.find_by(id: c.topic_id)
topic.recover!
topic.user_id = Discourse::SYSTEM_USER_ID
topic.save!
end
end
StaffActionLogger.new(@actor == user ? Discourse.system_user : @actor).log_user_deletion(user, opts.slice(:context))
MessageBus.publish "/file-change", ["refresh"], user_ids: [u.id]
end
end
end
end
end