67 lines
2.0 KiB
Ruby
67 lines
2.0 KiB
Ruby
module UserNameSuggester
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GENERIC_NAMES = ['i', 'me', 'info', 'support', 'admin', 'webmaster', 'hello', 'mail', 'office', 'contact', 'team']
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def self.suggest(name, allow_username = nil)
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return unless name.present?
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name = parse_name_from_email(name)
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find_available_username_based_on(name, allow_username)
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end
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def self.parse_name_from_email(name)
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if name =~ User::EMAIL
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# When 'walter@white.com' take 'walter'
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name = Regexp.last_match[1]
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# When 'me@eviltrout.com' take 'eviltrout'
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name = Regexp.last_match[2] if GENERIC_NAMES.include?(name)
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end
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name
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end
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def self.find_available_username_based_on(name, allow_username = nil)
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name = fix_username(name)
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i = 1
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attempt = name
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until attempt == allow_username || User.username_available?(attempt) || i > 100
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suffix = i.to_s
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max_length = User.username_length.end - suffix.length - 1
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attempt = "#{name[0..max_length]}#{suffix}"
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i += 1
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end
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until attempt == allow_username || User.username_available?(attempt) || i > 200
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attempt = SecureRandom.hex[1..SiteSetting.max_username_length]
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i += 1
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end
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attempt
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end
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def self.fix_username(name)
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rightsize_username(sanitize_username(name))
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end
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def self.sanitize_username(name)
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name = ActiveSupport::Inflector.transliterate(name)
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# 1. replace characters that aren't allowed with '_'
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name.gsub!(UsernameValidator::CONFUSING_EXTENSIONS, "_")
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name.gsub!(/[^\w.-]/, "_")
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# 2. removes unallowed leading characters
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name.gsub!(/^\W+/, "")
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# 3. removes unallowed trailing characters
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name = remove_unallowed_trailing_characters(name)
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# 4. unify special characters
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name.gsub!(/[-_.]{2,}/, "_")
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name
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end
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def self.remove_unallowed_trailing_characters(name)
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name.gsub!(/[^A-Za-z0-9]+$/, "")
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name
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end
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def self.rightsize_username(name)
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name = name[0, User.username_length.end]
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name = remove_unallowed_trailing_characters(name)
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name.ljust(User.username_length.begin, '1')
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end
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end
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