Client and Wrapper examples

omdb_client.rb

class OMDBClient
  HOST_URL = 'www.omdbapi.com'

  # http://www.omdbapi.com/
  def get_movie(args = {})
    uri = URI::HTTP.build(
      host: HOST_URL,
      query: {
        apikey: ENV.fetch('OMDB_API_KEY')
      }.merge(args).to_query
    )
    HTTParty.get(uri)
  end
end

# OMDBClient.new.get_movie(t: 'The Rock') =>
# {"Title"=>"The Rock", "Year"=>"1996", "Rated"=>"R", "Released"=>"07 Jun 1996", "Runtime"=>"136 min", "Genre"=>"Action, Adventure, Thriller", "Director"=>"Michael Bay", "Writer"=>"David Weisberg (story), Douglas Cook (story), David Weisberg (screenplay), Douglas Cook (screenplay), Mark Rosner (screenplay)", "Actors"=>"Sean Connery, Nicolas Cage, Ed Harris, John Spencer", "Plot"=>"A mild-mannered chemist and an ex-con must lead the counterstrike when a rogue group of military men, led by a renegade general, threaten a nerve gas attack from Alcatraz against San Francisco.", "Language"=>"English", "Country"=>"USA", "Awards"=>"Nominated for 1 Oscar. Another 9 wins & 8 nominations.", "Poster"=>"https://images-na.ssl-images-amazon.com/images/M/MV5BZDJjOTE0N2EtMmRlZS00NzU0LWE0ZWQtM2Q3MWMxNjcwZjBhXkEyXkFqcGdeQXVyNDk3NzU2MTQ@._V1_SX300.jpg", "Ratings"=>[{"Source"=>"Internet Movie Database", "Value"=>"7.4/10"}, {"Source"=>"Rotten Tomatoes", "Value"=>"66%"}, {"Source"=>"Metacritic", "Value"=>"58/100"}], "Metascore"=>"58", "imdbRating"=>"7.4", "imdbVotes"=>"279,143", "imdbID"=>"tt0117500", "Type"=>"movie", "DVD"=>"02 Dec 1997", "BoxOffice"=>"N/A", "Production"=>"Disney", "Website"=>"N/A", "Response"=>"True"}

omdb_wrapper.rb

class OMDBWrapper
  include Singleton

  class << self
    delegate :get_movie_by_title, to: :instance
  end

  def initialize
    @omdb_client = OMDBClient.new
  end

  def get_movie_by_title(title)
    movie_attributes = omdb_client.
      get_movie(t: title).
      deep_transform_keys(&:underscore)
    Movie.new(movie_attributes)
  end

  private

  attr_reader :omdb_client
end

class OMDBWrapper::Movie
  include Virtus.model

  attribute :title, String
  attribute :year, Integer
  attribute :runtime, Integer
end

# OMDBWrapper.get_movie_by_title('The Rock') # =>
# <OMDBWrapper::Movie:0x00007fc6f5b7b290 @runtime="136 min", @title="The Rock", @year=1996>