Class: DynamicLinks::ShorteningStrategies::SHA256Strategy

Inherits:
BaseStrategy
  • Object
show all
Defined in:
lib/dynamic_links/shortening_strategies/sha256_strategy.rb

Constant Summary

Constants inherited from BaseStrategy

BaseStrategy::BASE62_CHARS, BaseStrategy::MIN_LENGTH

Instance Method Summary collapse

Instance Method Details

#shorten(url, min_length: MIN_LENGTH) ⇒ Object

we use this parameter to increase the length of the short URL in order to avoid collisions

Parameters:

  • url (String) —

    The URL to shorten

  • min_length (Integer) (defaults to: MIN_LENGTH) —

    The minimum length of the short URL



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# File 'lib/dynamic_links/shortening_strategies/sha256_strategy.rb', line 8

def shorten(url, min_length: MIN_LENGTH)
  # Create a hash of the URL
  hashed_url = Digest::SHA256.hexdigest(url)

  # Convert the first few characters of the hash into a Base62 string
  short_url = base62_encode(hashed_url[0...10].to_i(16))

  # Ensure the short URL is at least #{min_length} characters
  short_url.ljust(min_length, '0')
end