auth_service.rb

module Airbnb
  class AuthService
    class << self
      def authorize(username, password)
        proxy = next_proxy
        
        res = HTTParty.post(AIRBNB_AUTHORIZE_USER, http_proxyaddr: proxy[0], http_proxyport: proxy[1],
          body: {client_id: CLIENT_ID,
            username: username,
            password: password,
            grant_type: 'password'},

          headers: HEADERS)


        if res.code.to_i == 200 || res.code.to_i == 420
          response = JSON.parse(res.body)
          return response['access_token']
        end

        raise RequestError.new("Cannot Authorize the user #{username}. #{res}")
      end

      private

      def params(username, password)
        {
          username: username,
          password: password,
          client_id: CLIENT_ID
        }
      end

      def next_proxy
        token = 'e5c18eb290a5c25e2613d70d5b2df58b616bb223a7a69694a09a0e6bfec809b5'
        uri = "https://api.proxicity.io/v2/#{token}/proxy/?httpsSupport=true&isAnonymous=true"
        res = HTTParty.get(uri).parsed_response
        [res['ipAddress'], res['port']]
      end
    end
  end
end