Class: UrlShortly::Generator

Inherits:
Object
  • Object
show all
Defined in:
lib/url_shortly/generator.rb

Constant Summary collapse

BASE_URL = 
"http://short.ly/"

Class Method Summary collapse

Class Method Details

.shorten(url) ⇒ Object

Raises:



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# File 'lib/url_shortly/generator.rb', line 7

def self.shorten(url)
  raise Error, "URL cannot be empty" if url.to_s.empty?
  raise Error, "Invalid URL format" if !valid_url?(url)
  
  id = Base62.encode(url.hash.abs)
  "#{BASE_URL}#{id}"
end

.valid_url?(url) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/url_shortly/generator.rb', line 15

def self.valid_url?(url)
  uri = URI.parse(url)
  uri.is_a?(URI::HTTP) || uri.is_a?(URI::HTTPS)
rescue URI::InvalidURIError
  false
end