discourse/lib/user_name_suggester.rb

49 lines
1.3 KiB
Ruby

module UserNameSuggester
def self.suggest(name, allow_username = nil)
return unless name.present?
name = parse_name_from_email(name)
find_available_username_based_on(name, allow_username)
end
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, allow_username = nil)
name = fix_username(name)
i = 1
attempt = name
until attempt == allow_username || 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.fix_username(name)
rightsize_username(sanitize_username(name))
end
def self.sanitize_username(name)
name = ActiveSupport::Inflector.transliterate(name)
name = name.gsub(/^[^[:alnum:]]+|\W+$/, "")
.gsub(/\W+/, "_")
.gsub(/^\_+/, '')
name
end
def self.rightsize_username(name)
name.ljust(User.username_length.begin, '1')[0, User.username_length.end]
end
end