Interacting with a RESTful posts service using HTTParty

posts_service.rb

class PostsService
  include HTTParty

  base_uri "https://api.example.com"
  read_timeout 5 # always have timeouts!
  # debug_output $stdout # for quick access during debugging

  attr_reader :auth, :headers

  def initialize(user)
    @auth = {
      username: ENV["API_USERNAME"],
      password: ENV["API_PASSWORD"],
    }

    @headers = {
      "Content-Type" => "application/json",
      "X-User-ID" => user.tracking_id,
      "X-Tags" => "Name:#{user.full_name}",
      "Authorisation" => "Bearer:#{user.oauth_token}",
    }
  end

  def index
    get("posts")
  end

  def show(post_id)
    get("posts/#{post_id}")
  end

  def create(attributes)
    self.class.post(
      endpoint("posts"),
      default_options.merge(body: attributes.to_json)
    )
  end

  def update(post_id, attributes)
    self.class.patch(
      endpoint("posts/#{post_id}"),
      default_options.merge(body: attributes.to_json)
    )
  end

  def destroy(post_id)
    self.class.delete(
      endpoint("posts/#{post_id}"),
      default_options
    )
  end

  protected

  def default_options
    {
      headers: headers,
      digest_auth: auth,
    }
  end

  def endpoint(uri)
    "/v2/#{uri}"
  end

  def get(uri)
    self.class.get(
      endpoint(uri),
      default_options
    )
  end
end