faragorn/giphy_api_ruby

require 'uri'
require 'net/http'

module GiphyAPI
  class Connection
    SITE = URI.parse('http://api.giphy.com').freeze

    def initialize
      @http = Net::HTTP.new SITE.host, SITE.port
    end

    def get path, **options
      request(:get, complete_path_with_query(path, options))
    end

    private

    attr_reader :http

    def request method, path, *arguments
      result = http.send method, path, *arguments
      handle_response(result)
    end

    def handle_response response
      case response.code.to_i
      when 200
        response
      when 400
        raise BadRequest.new(response)
      when 401
        raise UnauthorizedAccess.new(response)
      when 403
        raise ForbiddenAccess.new(response)
      when 404
        raise NotFound.new(response)
      when 429
        raise TooManyRequests.new(response)
      when 500..600
        raise ServerError.new(response)
      else
        raise ConnectionError.new(response)
      end
    end

    def configuration
      GiphyAPI.configuration
    end

    def complete_options **options
      options.merge(api_key: configuration.api_key)
    end

    def complete_path path
      "/#{configuration.api_prefix}#{path}"
    end

    def complete_path_with_query path, **query_options
      encoded_options = URI.encode_www_form complete_options(query_options)
      "#{complete_path(path)}?#{encoded_options}"
    end
  end
end