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# frozen_string_literal: true
class Account::Field < ActiveModelSerializers::Model
MAX_CHARACTERS_LOCAL = 255
MAX_CHARACTERS_COMPAT = 2_047
ACCEPTED_SCHEMES = %w(https).freeze
attributes :name, :value, :verified_at, :account
def initialize(account, attributes)
# Keeping this as reference allows us to update the field on the account
# from methods in this class, so that changes can be saved.
@original_field = attributes
@account = account
super(
name: sanitize(attributes['name']),
value: sanitize(attributes['value']),
verified_at: attributes['verified_at']&.to_datetime,
)
end
def verified?
verified_at.present?
end
def value_for_verification
@value_for_verification ||= if account.local?
value
else
extract_url_from_html
end
end
def verifiable?
return false if value_for_verification.blank?
# This is slower than checking through a regular expression, but we
# need to confirm that it's not an IDN domain.
parsed_url = Addressable::URI.parse(value_for_verification)
ACCEPTED_SCHEMES.include?(parsed_url.scheme) &&
parsed_url.user.nil? &&
parsed_url.password.nil? &&
parsed_url.host.present? &&
parsed_url.normalized_host == parsed_url.host &&
(parsed_url.path.empty? || parsed_url.path == parsed_url.normalized_path)
rescue Addressable::URI::InvalidURIError, IDN::Idna::IdnaError
false
end
def requires_verification?
!verified? && verifiable?
end
def mark_verified!
@original_field['verified_at'] = self.verified_at = Time.now.utc
end
def to_h
{ name: name, value: value, verified_at: verified_at }
end
private
def sanitize(str)
str.strip[0, character_limit]
end
def character_limit
account.local? ? MAX_CHARACTERS_LOCAL : MAX_CHARACTERS_COMPAT
end
def extract_url_from_html
doc = Nokogiri::HTML(value).at_xpath('//body')
return if doc.nil?
return if doc.children.size > 1
element = doc.children.first
return if element.name != 'a' || element['href'] != element.text
element['href']
end
end
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