86 lines
2.6 KiB
Ruby
86 lines
2.6 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_or_email, allowed_username = nil)
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return unless name_or_email.present?
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name = parse_name_from_email(name_or_email)
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find_available_username_based_on(name, allowed_username)
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end
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def self.parse_name_from_email(name_or_email)
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return name_or_email if name_or_email !~ 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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name
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end
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def self.find_available_username_based_on(name, allowed_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 == allowed_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
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attempt = "#{truncate(name, max_length)}#{suffix}"
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i += 1
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end
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until attempt == allowed_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 = name.to_s
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if SiteSetting.unicode_usernames
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name.unicode_normalize!
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else
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name = ActiveSupport::Inflector.transliterate(name)
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end
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name.gsub!(UsernameValidator.invalid_char_pattern, '_')
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name.chars.map! { |c| UsernameValidator.whitelisted_char?(c) ? c : '_' } if UsernameValidator.char_whitelist_exists?
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name.gsub!(UsernameValidator::INVALID_LEADING_CHAR_PATTERN, '')
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name.gsub!(UsernameValidator::CONFUSING_EXTENSIONS, "_")
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name.gsub!(UsernameValidator::INVALID_TRAILING_CHAR_PATTERN, '')
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name.gsub!(UsernameValidator::REPEATED_SPECIAL_CHAR_PATTERN, '_')
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name
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end
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def self.rightsize_username(name)
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name = truncate(name, User.username_length.end)
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name.gsub!(UsernameValidator::INVALID_TRAILING_CHAR_PATTERN, '')
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missing_char_count = User.username_length.begin - name.grapheme_clusters.size
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name << '1' * missing_char_count if missing_char_count > 0
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name
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end
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def self.truncate(name, max_grapheme_clusters)
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clusters = name.grapheme_clusters
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if clusters.size > max_grapheme_clusters
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clusters = clusters[0..max_grapheme_clusters - 1]
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name = clusters.join
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end
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while name.length > UsernameValidator::MAX_CHARS
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clusters.pop
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name = clusters.join
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end
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name
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end
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end
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