module Gitlab
  class UrlSanitizer
    def self.sanitize(content)
      regexp = URI::Parser.new.make_regexp(%w(http https ssh git))

      content.gsub(regexp) { |url| new(url).masked_url }
    rescue Addressable::URI::InvalidURIError
      content.gsub(regexp, '')
    end

    def self.valid?(url)
      return false unless url.present?

      Addressable::URI.parse(url.strip)

      true
    rescue Addressable::URI::InvalidURIError
      false
    end

    def initialize(url, credentials: nil)
      @url = Addressable::URI.parse(url.to_s.strip)

      %i[user password].each do |symbol|
        credentials[symbol] = credentials[symbol].presence if credentials&.key?(symbol)
      end

      @credentials = credentials
    end

    def sanitized_url
      @sanitized_url ||= safe_url.to_s
    end

    def masked_url
      url = @url.dup
      url.password = "*****" if url.password.present?
      url.user = "*****" if url.user.present?
      url.to_s
    end

    def credentials
      @credentials ||= { user: @url.user.presence, password: @url.password.presence }
    end

    def full_url
      @full_url ||= generate_full_url.to_s
    end

    private

    def generate_full_url
      return @url unless valid_credentials?
      @full_url = @url.dup

      @full_url.password = credentials[:password]
      @full_url.user = credentials[:user]

      @full_url
    end

    def safe_url
      safe_url = @url.dup
      safe_url.password = nil
      safe_url.user = nil
      safe_url
    end

    def valid_credentials?
      credentials && credentials.is_a?(Hash) && credentials.any?
    end
  end
end