tvOS Bootcamp Network Manager 3

NetworkManager3.swift

private func executeRequest<T: Codable>(request: URLRequest, completion: ((T?, Error?) -> Void)?) {
    let session = URLSession(configuration: .default)
    let dataTask = session.dataTask(with: request) { (data, response, error) in
        guard let data = data else {
            completion?(nil, error)
            return
        }
        if let decodedResponse = try? JSONDecoder().decode(T.self, from: data) {
            DispatchQueue.main.async {
                completion?(decodedResponse, nil)
            }
        } else {
            completion?(nil, NetworkError.invalidData)
        }
    }
    dataTask.resume()
}