Metaprogrammed API Class

gistfile1.rb

class ApiName
  include HTTParty
  base_uri 'api_uri'

  # List of endpoints to instantiate instance methods for
  # format example: {users: :get, comments: [:get, :post, :delete]} 
  ENDPOINTS = {users: :get}
  
  def initialize(api_key = nil, api_secret = nil, options = {})
    @options = options.merge!({api_key: api_key, api_secret: api_secret})
    
    # Metaprogramming that instantiates the methods needed to perform calls to
    # the endpoints specified in the ENDPOINTS class constant hash. 
    # method sigatures follow the pattern of ex: get_users(options)
    ENDPOINTS.each do |key, value|
      value = [value] unless value.kind_of?  Array
      value.each do |request_type|
        self.class.send(:define_method, "#{request_type}_#{key}".to_sym) do |options = {}|
          @options.merge!(options)
          return self.class.send(request_type, "/#{key.to_s.split('_').join}", @options).to_hash
        end
      end
    end
  end
end