class Shortnr - shortnr-0.1.1 Documentation

Public Class Methods

new(store:) click to toggle source

# File lib/shortnr.rb, line 6
def initialize(store:)
  validate_store!(store)
  @store = store
end

Public Instance Methods

find(shortened) click to toggle source

Finds params for a shortened URL

@param shortend [String] Shortened param @returns [Hash] Returns a Hash or nil

# File lib/shortnr.rb, line 28
def find(shortened)
  raise ArgumentError.new("Expected shortened to be a string") unless shortened.is_a?(String)

  maybe_result = @store.get(key_for(shortened))
  if maybe_result && maybe_result.length > 0
    JSON.parse(maybe_result, symbolize_names: true)
  else
    nil
  end
end

shorten(params) click to toggle source

Shortens a set of params to a md5 hash and stores it in the store

@param params [Hash] Params to be shortened @returns [String] Shortened string

# File lib/shortnr.rb, line 16
def shorten(params)
  raise ArgumentError.new("Expected params to be a hash or array") unless params.is_a?(Hash) or params.is_a?(Array)

  shortened = Digest::MD5.hexdigest(params.to_json)
  @store.set(key_for(shortened), params.to_json)
  shortened
end

Private Instance Methods

key_for(shortened) click to toggle source

# File lib/shortnr.rb, line 46
def key_for(shortened)
  "shortnr:#{shortened}"
end

validate_store!(store) click to toggle source

# File lib/shortnr.rb, line 41
def validate_store!(store)
  raise ArgumentError.new("Store should respond to #set") unless store.respond_to?(:set)
  raise ArgumentError.new("Store should respond to #get") unless store.respond_to?(:get)
end