https://stackoverflow.com/q/58772276/1271826

Example.swift

struct Cost: Codable {
    let id: String
    let label: String
    let value: String
}

let cost = Cost(id: "something", label: "something", value: "something")
let jsonData = try! JSONEncoder().encode(cost)                           // this works fine

let object = try! JSONSerialization.jsonObject(with: jsonData)           // this works fine

hi again my friend, I'm have issue with my network layer, would you please help me???

Go ahead an add your question here. Worst case scenario, if it’s too complicated, I might suggest that you post it as a proper question on StackOverflow, as I’m buried right now.

I really don't know about it complication, I will ask and you take decision that its complicated or not.

I have APIClient in my project and this is the code:

protocol APIClientType {
    func request<M: Codable>(_ endpoint: URLRequestConvertible) -> Single<M>
}

final class NewAPIClient: NSObject, URLSessionDelegate, APIClientType {
    
    var session: URLSession!
    
    override init() {
        super.init()
        
        let urlsession = URLSession(configuration: .default, delegate: self, delegateQueue: OperationQueue.main)
        urlsession.configuration.allowsCellularAccess = true
        urlsession.configuration.timeoutIntervalForRequest = TimeInterval(10.0)
        
        self.session = urlsession
    }
    
    func request<M: Codable>(_ endpoint: URLRequestConvertible) -> Single<M> {
        return Single<M>.create { [unowned self] single in

            let request = endpoint.request()

            #if DEBUG
            print("REQUEST: \(debugPrint(request))")
            #endif
            
            let task = self.session.dataTask(with: request) { (data, response, error) in
                if let responseError = error {
                    single(.error(responseError))
                }
                
                #if DEBUG
                print("RESPONSE: \(debugPrint(response ?? "NULL"))")
                #endif
                
                if let httpResponse = response as? HTTPURLResponse {
                    switch httpResponse.statusCode {
                    case 200, 201:
                        guard let data = data else {
                            break
                        }
                        
                        do {
                            let model = try JSONDecoder().decode(M.self, from: data)
                            single(.success(model))
                        } catch let myJSONError {
                            single(.error(myJSONError))
                        }
                        
                    case 404:
                        single(.error(APIError.NotFound))
                        
                    default:
                        break
                    }
                }
            }
            
            task.resume()
            
            return Disposables.create {
                task.cancel()
            }
        }
    }
}

in 2 case of web services the response is simple text not a json, something like "the task done", my issue is when I intent to get this responses the " request " function returns myJSONError, how can I modify this class to return a simple string response?