mastodon/app/services/clear_domain_media_service.rb

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# frozen_string_literal: true
class ClearDomainMediaService < BaseService
attr_reader :domain_block
def call(domain_block)
@domain_block = domain_block
clear_media! if domain_block.reject_media?
end
private
def invalidate_association_caches!(status_ids)
# Normally, associated models of a status are immutable (except for accounts)
# so they are aggressively cached. After updating the media attachments to no
# longer point to a local file, we need to clear the cache to make those
# changes appear in the API and UI
Rails.cache.delete_multi(status_ids.map { |id| "statuses/#{id}" })
end
def clear_media!
clear_account_images!
clear_account_attachments!
clear_emojos!
end
def clear_account_images!
blocked_domain_accounts.reorder(nil).find_each do |account|
account.avatar.destroy if account.avatar&.exists?
account.header.destroy if account.header&.exists?
account.save
end
end
def clear_account_attachments!
media_from_blocked_domain.reorder(nil).find_in_batches do |attachments|
affected_status_ids = []
attachments.each do |attachment|
affected_status_ids << attachment.status_id if attachment.status_id.present?
attachment.file.destroy if attachment.file&.exists?
attachment.type = :unknown
attachment.save
end
invalidate_association_caches!(affected_status_ids) unless affected_status_ids.empty?
end
end
def clear_emojos!
emojis_from_blocked_domains.destroy_all
end
def blocked_domain
domain_block.domain
end
def blocked_domain_accounts
Account.by_domain_and_subdomains(blocked_domain)
end
def media_from_blocked_domain
MediaAttachment.joins(:account).merge(blocked_domain_accounts).reorder(nil)
end
def emojis_from_blocked_domains
CustomEmoji.by_domain_and_subdomains(blocked_domain)
end
end