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class FetchRemoteAccountService < BaseService
def call(url)
atom_url, body = FetchAtomService.new.call(url)
return nil if atom_url.nil?
return process_atom(atom_url, body)
end
private
def process_atom(url, body)
xml = Nokogiri::XML(body)
url_parts = Addressable::URI.parse(url)
username = xml.at_xpath('//xmlns:author/xmlns:name').try(:content)
domain = url_parts.host
return nil if username.nil?
Rails.logger.debug "Going to webfinger #{username}@#{domain}"
return FollowRemoteAccountService.new.call("#{username}@#{domain}")
rescue TypeError => e
Rails.logger.debug "Unparseable URL given: #{url}"
nil
rescue Nokogiri::XML::XPath::SyntaxError
Rails.logger.debug "Invalid XML or missing namespace"
nil
end
end
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