Comment POST request

final class Comment: Codable {
    var id:String?
    var post_id:String?
    var username:String?
    var user_picture:String?
    var user_id:String?
    var text:String?
    var parent_id:String?
    
    init(post_id:String, username:String, user_picture:String, user_id:String, text:String, parent_id: String) {
        self.post_id = post_id
        self.username = username
        self.user_picture = user_picture
        self.user_id = user_id
        self.text = text
        self.parent_id = parent_id
    }
}

struct CommentPostRequest {
    let resourceURL:URL
    
    init(endpoint:String) {
        let resourceString = "http://localhost:8000/\(endpoint)"
        guard let resourceURL = URL(string: resourceString) else {fatalError()}
        
        self.resourceURL = resourceURL
        
    }
    
    func save(_ commentToSave: Comment, completion: @escaping(Result<Comment, APIError>) -> Void) {
        do {
        var urlRequest = URLRequest(url:resourceURL)
        urlRequest.httpMethod = "POST"
        urlRequest.addValue("application/json", forHTTPHeaderField: "Content_Type")
        urlRequest.httpBody = try JSONEncoder().encode(commentToSave)
        
        let dataTask = URLSession.shared.dataTask(with: urlRequest) { data, response, _ in
          guard let httpResponse = response as? HTTPURLResponse, httpResponse.statusCode == 200,
          let jsonData = data else {
            completion(.failure(.responseProblem))
            return
        }
            
            do {
                let commentData = try JSONDecoder().decode(Comment.self, from: jsonData)
                completion(.success(commentData))
            } catch {
                completion(.failure(.decodingProblem))
            }
        
        }
            dataTask.resume()
        } catch  {
            completion(.failure(.encodingProblem))
        }
    }
}

Making My Request

func performActionSend() {
        if let text = textField.text,
        let username = username,
        let user_picture = profile?.picture,
        let user_id = profile?.sub {
            print("got info")
            let comment = Comment(post_id: "", username: username, user_picture: user_picture.absoluteString, user_id: user_id, text: text, parent_id: "")
            
            let postRequest = CommentPostRequest(endpoint: "comment")
            postRequest.save(comment) { (result) in
                switch result {
                case .success(let comment):
                    print("the following comment has been sent: \(comment)")
                case .failure(let error):
                    print("An error occurred: \(error)")
                }
            }
        } 

   }