SwiftyAlex

import CoreData

@propertyWrapper
class Fetched<Object: NSManagedObject>: NSObject, NSFetchedResultsControllerDelegate {
    private var _fetchedResultsController: NSFetchedResultsController<Object>?
    var wrappedValue: [Object] = []
    
    init(context: NSManagedObjectContext = CoreDataService.context, sortDescriptiors: [NSSortDescriptor] = [], predicate: NSPredicate? = nil) {
        super.init()
        // Setup a fetch request

SwiftyAlex

import CoreData

@propertyWrapper
class Fetched<Object: NSManagedObject>: NSObject, NSFetchedResultsControllerDelegate {
    private var _fetchedResultsController: NSFetchedResultsController<Object>?
    var wrappedValue: [Object] = []
    
    init(context: NSManagedObjectContext = CoreDataService.context, sortDescriptiors: [NSSortDescriptor] = [], predicate: NSPredicate? = nil) {
        super.init()
        // Setup a fetch request

SwiftyAlex

TodoService().getTodo(todo: Todo.placeholder(id: 1))
.sink(receiveCompletion: {
  (completion) in
  print(completion)
}) { (todo) in
  print(todo)
}

SwiftyAlex

public class Router {
    static var baseUrl = APIConfig.baseURL
    
    @available(iOS 13.0, *)
    public static func performRequest<R: Route>(_ route: R) -> AnyPublisher<R.ResponseType, Error> {
        return URLSession.shared.dataTaskPublisher(for: route.toRequest())
                   .mapError { NetworkError(from: $0) }
                   .map(\.data)
                   .decode(type: R.ResponseType.self, decoder: JSONDecoder())
                   .mapError { _ in NetworkError.decodingFailed }

SwiftyAlex

import Foundation
import Combine

public class TodoService {       
    public func getTodo(todo: Todo) -> AnyPublisher<Todo, Error> {
        return Router.performRequest(GetTodoRoute(todo: todo))
                .receive(on: DispatchQueue.main)
                .eraseToAnyPublisher()
    }
}

SwiftyAlex

/// A route that gets a single `Todo`.
public struct GetTodoRoute: Route {
    public typealias RequestType = Empty
    public typealias ResponseType = Todo
    
    public static let method = HTTPMethod.get
    public static let path = "todos"
    public static let requiresAuth = false
    
    public var requestObject: Empty?

SwiftyAlex

extension Route {
    /// Default parameters so routes do not need to declare these
    var queryParameters: [URLQueryItem] {
        return []
    }
    var pathParameters: [String] {
        return []
    }
    /// The basic implementation of `Route` `toRequest` adds parameters and builds the path.
    public func toRequest() -> URLRequest {

SwiftyAlex

public protocol Route {
    /// Request & ResponseType are forced, but `Empty` allows you to skip encoding/decoding
    associatedtype RequestType: Encodable
    associatedtype ResponseType: Decodable
    static var method: HTTPMethod { get }
    static var path: String { get }
    static var requiresAuth: Bool { get }
    
    /// Optional instance of `RequestType` that gets encoded if present
    var requestObject: RequestType? { get set }

SwiftyAlex

public protocol Route {
    /// Request & ResponseType are forced, but `EmptyRequest` allows you to skip encoding/decoding
    associatedtype RequestType: Encodable
    associatedtype ResponseType: Decodable
    static var method: HTTPMethod { get }
    static var path: String { get }
    
    /// Optional instance of `RequestType` that gets encoded if present
    var requestObject: RequestType? { get set }