discourse/lib/user_name_suggester.rb

44 lines
1.0 KiB
Ruby

module UserNameSuggester
def self.suggest(name)
return unless name.present?
name = parse_name_from_email(name)
find_available_username_based_on(name)
end
private
def self.parse_name_from_email(name)
if name =~ User::EMAIL
# When 'walter@white.com' take 'walter'
name = Regexp.last_match[1]
# When 'me@eviltrout.com' take 'eviltrout'
name = Regexp.last_match[2] if ['i', 'me'].include?(name)
end
name
end
def self.find_available_username_based_on(name)
sanitize_username!(name)
name = rightsize_username(name)
i = 1
attempt = name
until User.username_available?(attempt)
suffix = i.to_s
max_length = User.username_length.end - suffix.length - 1
attempt = "#{name[0..max_length]}#{suffix}"
i += 1
end
attempt
end
def self.sanitize_username!(name)
name.gsub!(/^[^[:alnum:]]+|\W+$/, "")
name.gsub!(/\W+/, "_")
end
def self.rightsize_username(name)
name.ljust(User.username_length.begin, '1')[0, User.username_length.end]
end
end